IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:35

12 July 2010
IAU Electronic Telegram No.2365


SUPERNOVA 2010gb IN UGC 9947

T. Boles, Coddenham, England, reports the discovery of an apparent
supernova (mag 16.5) on unfiltered CCD images taken on June 11.005 and 11.925
UT with a 0.35-m reflector. The new object is located at R.A. = 15h38m39s.79,
Decl. = +41o00'19".9 (equinox 2000.0), which is approximately 8".0 west and
1".8 north of the center of UGC 9947. Nothing is present at this position on
Boles' images from 2010 Feb. 19 and Apr. 21 (limiting mag 19.5) or on
Digitized Sky Survey plates from 1993 Apr. 17 (limiting red mag 20.5) and
1990 Mar. 31 (limiting blue mag 21.0).
After posting on the Central Bureau's unconfirmed-objects webpage, F.
Ciabattari, S. Donati, E. Mazzoni, and M. Rossi, Borgo a Mozzano, Italy,
report their independent discovery of 2010gb on unfiltered CCD images obtained
on July 10.89 (limiting mag 18.5) and July 11.87-11.90 UT (limiting mag 18.7)
with a 0.5-m Newtonian reflector, noting mag 15.8 on July 10.89 and mag 16.2
on July 11; they measured position end figures 39s.80, 20".1, and add that
nothing is visible at this position on DSS plates from the Palomar Sky Survey
on 1993 Apr. 17 (F plate, limiting mag 20.3) and 1990 Mar. 31 (J plate,
limiting mag 20.3).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 12 (CBET 2365) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:35

13 July 2010
IAU Electronic Telegram No.2366


SUPERNOVA 2010gb IN UGC 9947

[NOTE: this replaces the text on CBET 2365 (Boles' discovery
observations were in July, not June)]
T. Boles, Coddenham, England, reports the discovery of an apparent
supernova (mag 16.5) on unfiltered CCD images taken on July 11.005 and 11.925
UT with a 0.35-m reflector. The new object is located at R.A. = 15h38m39s.79,
Decl. = +41o00'19".9 (equinox 2000.0), which is approximately 8".0 west and
1".8 north of the center of UGC 9947. Nothing is present at this position on
Boles' images from 2010 Feb. 19 and Apr. 21 (limiting mag 19.5) or on
Digitized Sky Survey plates from 1993 Apr. 17 (limiting red mag 20.5) and
1990 Mar. 31 (limiting blue mag 21.0).
After posting on the Central Bureau's unconfirmed-objects webpage, F.
Ciabattari, S. Donati, E. Mazzoni, and M. Rossi, Borgo a Mozzano, Italy,
report their independent discovery of 2010gb on unfiltered CCD images obtained
on July 10.89 (limiting mag 18.5) and July 11.87-11.90 UT (limiting mag 18.7)
with a 0.5-m Newtonian reflector, noting mag 15.8 on July 10.89 and mag 16.2
on July 11; they measured position end figures 39s.80, 20".1, and add that
nothing is visible at this position on DSS plates from the Palomar Sky Survey
on 1993 Apr. 17 (F plate, limiting mag 20.3) and 1990 Mar. 31 (J plate,
limiting mag 20.3).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 13 (CBET 2366) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:36

13 July 2010
IAU Electronic Telegram No.2367


SUPERNOVA 2010gc

G. Pignata and M. Cifuentes, Universidad Andres Bello; J. Maza, M. Hamuy,
R. Antezana, L. Gonzalez, P. Gonzalez, S. Silva, G. Folatelli, R. Cartier, F.
Forster, and S. Marchi, Universidad de Chile; B. Conuel, Wesleyan University;
and D. Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina at Chapel Hill, on behalf of
the CHASE project, report the discovery of an apparent supernova (mag
approximately 16.8) on unfiltered images taken on July 12.08 and 12.98 UT with
the 0.41-m 'PROMPT 1' telescope located at Cerro Tololo. The new object is
located at R.A. = 13h23m06s.30 +/- 0".1, Decl. = -13o00'18".1 +/- 0".1 (equinox
2000.0), which is about 3".4 east and 4".0 south of center of the presumed host
galaxy. Nothing is visible at this position on archival images taken on June
12.07 (limiting mag 18.0) and May 1.13 (limiting mag 18.5).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 13 (CBET 2367) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:36

13 July 2010
IAU Electronic Telegram No.2368


SUPERNOVA 2010gd IN UGC 11064

Further to CBET 2351, C. Griffith, S. B. Cenko, W. Li, and A. V.
Filippenko, University of California, report the LOSS discovery of an apparent
supernova on unfiltered KAIT images:

SN 2010 UT R.A. (2000.0) Decl. Mag. Offset
2010gd July 8.34 17 57 40.98 +27 49 48.1 19.9 0".2 W, 18".9 S

Additional KAIT magnitudes for 2010gd: a co-added image from Mar.-June,
[21.2; July 12.39, 18.5. Supernovae 2000cn and 2005ds also occurred in this
galaxy.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 13 (CBET 2368) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:37

13 July 2010
IAU Electronic Telegram No.2369


SUPERNOVA 2010ge

Further to CBET 2339, A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J.
Graham, and R. Williams, California Institute of Technology; J. L. Prieto,
Carnegie Observatories; M. Catelan, Pontificia Universidad Catolica de Chile;
E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of
Arizona; and E. Christensen, Gemini Observatory, report the CRTS discovery of
an apparent supernova in unfiltered Catalina Sky Survey (CSS) images:

SN 2010 UT R.A. (2000.0) Decl. Mag. Offset
2010ge June 10.26 15 43 43.91 - 9 28 34.0 17.7 7".7 E, 3".4 S

Further CSS magnitudes for 2010ge: May 4.40 UT, [19.5; May 31.25, 17.5; June
19.26, 18.3; July 6.21, 18.4.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 13 (CBET 2369) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:37

14 July 2010
IAU Electronic Telegram No.2370


SUPERNOVA 2010gf IN UGC 633

Further to CBET 2368, C. Griffith, S. B. Cenko, W. Li, and A. V.
Filippenko, University of California, report the LOSS discovery of an
apparent supernova on unfiltered KAIT images:

SN 2010 UT R.A. (2000.0) Decl. Mag. Offset
2010gf July 11.45 1 01 21.14 +31 30 46.4 18.9 2".0 W, 18".2 N

Additional KAIT magnitudes for 2010gf: a co-added image from Nov. 2009 to
Jan. 2010, [20.2; 2010 July 13.50, 18.8. SN 2006O also occurred in
the galaxy UGC 633.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 14 (CBET 2370) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:37

14 July 2010
IAU Electronic Telegram No.2371


SUPERNOVA 2010gg IN ESO 602-25

J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, S. Silva, G.
Folatelli, R. Cartier, F. Forster, and S. Marchi, Universidad de Chile; G.
Pignata and M. Cifuentes, Universidad Andres Bello; B. Conuel, Wesleyan
University; and D. Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster,
M. Nysewander, and A. LaCluyze, University of North Carolina at Chapel Hill,
on behalf of the CHASE project, report the discovery of an apparent supernova
(mag approximately 17.7) on an unfiltered image taken on July 12.31 UT with
the 0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object,
which is also present at mag approximately 17.5 in an image taken on July
13.30, is located at R.A. = 22h31m25s.47 +/- 0".1, Decl. = -19o01'54".8 +/-
0".1 (equinox 2000.0), which is about 0".1 east and 9".5 north of the center
of the galaxy ESO 602-25. Nothing is visible at this position on archival
images taken on June 22.24 (limiting mag 17.0) and in a stack of twenty-three
40-s images taken between 2009 Apr. 13.39 and 2010 May 7.36 (limiting mag
20.5).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 14 (CBET 2371) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:38

14 July 2010
IAU Electronic Telegram No.2372


SUPERNOVA 2010gh IN IC 4523

G. Pignata and M. Cifuentes, Universidad Andres Bello; J. Maza, M. Hamuy,
R. Antezana, L. Gonzalez, P. Gonzalez, S. Silva, G. Folatelli, R. Cartier, F.
Forster, and S. Marchi, Universidad de Chile; B. Conuel, Wesleyan University;
and D. Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina at Chapel Hill, on behalf of
the CHASE project, report the discovery of an apparent supernova (mag
approximately 16.9) on unfiltered images taken on July 13.03 and 14.09 UT with
the 0.41-m 'PROMPT 1' telescope located at Cerro Tololo. The new object is
located at R.A. = 15h05m13s.46 +/- 0".1, Decl. = -43o30'59".6 +/- 0".1
(equinox 2000.0), which is about 31".9 east and 25".8 south of the center of
the galaxy IC 4523. Nothing is visible at this position on archival images
taken on June 28.07 (limiting mag 18.0) and June 1.14 (limiting mag 18.5).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 14 (CBET 2372) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:38

15 July 2010
IAU Electronic Telegram No.2373


SUPERNOVA 2010gd IN UGC 11064

G. H. Marion, Harvard-Smithsonian Center for Astrophysics and University
of Texas; J. Vinko, University of Szeged; and J. C. Wheeler, University of
Texas, report that a spectrum (range 430-1000 nm) of 2010gd (cf. CBET 2368),
obtained on July 14.3 UT with the 9.2-m Hobby-Eberly Telescope (+ Marcario
Low-Resolution Spectrograph) by S. C. Odewahn, shows prominent features of
Mg II 448.1-nm, the "W"-shaped Fe II feature around 500 nm, Na D, Si II
635.5-nm, O I 777.4-nm, and the strong Ca II near-infrared triplet,
characteristic of a type-Ic supernova near maximum brightness. No obvious
He I, C II, or C I features could be identified. SNID (Blondin and Tonry 2007,
Ap.J. 666, 1024) shows a good match for templates from the normal type-Ic
supernova 1994I at, or a few days before, maximum light. SNID also identifies
possible fits to templates from type-Ia supernovae at about one week post-
maximum, but photometry from CBET 2368 shows that 2010gd was still brightening
on July 12. The redshift, estimated from a narrow H-alpha emission feature
(due to imperfect host-galaxy subtraction) is 0.023, in agreement with that of
the host galaxy, UGC 11064 (z = 0.0235; de Vaucouleurs et al. 1991, Third
Reference Catalogue of Bright Galaxies, ver. 3.9). The expansion velocity,
estimated from the Si II 635.5-nm feature, is 6100 km/s. This relatively low
velocity also supports the type-Ic classification (e.g., Hunter et al. 2009,
A.Ap. 508, 371).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 15 (CBET 2373) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:38

18 July 2010
IAU Electronic Telegram No.2374


APPARENT NOVA IN M33: M31N 2010-07a

Koichi Nishiyama, Kurume, Japan; and Fujio Kabashima, Miyaki, Japan,
report the discovery of an apparent nova (mag 17.2) in the galaxy M33 on
seven 40-s unfiltered CCD frames (limiting magnitude 19.1) taken around July
17.798 UT using a Meade 200R 0.40-m f/9.8 reflector (+ SBIG STL1001E camera).
The new object, which was confirmed at mag 17.1 on two 40-s unfiltered CCD
frames (limiting mag 18.4) taken around July 18.783, is located at R.A. =
1h33m36s.86, Decl. = +30d46'22".2 (equinox 2000.0; reference catalogue
USNO-B1.0), which is 181" west and 405" north of the center of M33.
Nothing is visible at this position on their past frames taken on Mar. 16.438
and 18.442 (limiting magnitude 18.4) or on a Digitized Sky Survey image
from 1991 Oct. 5 (limiting red mag 18.7). M31N 2010-07a was confirmed at
mag 16.5 by T. Yusa, who remotely obtained three 180-s unfiltered CCD
exposures (limiting mag 19.0) with a 0.25-m f/3.4 refrector located at the
RAS Observatory near Mayhill, NM, U.S.A. on July 18.358, from which he
measured position end figures 36s.83, 22".2. Yusa has posted one of his
images at URL http://space.geocities.jp/yusastar/PNinM33_100718.htm, with
M31N 2010-07a marked by two lines.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 18 (CBET 2374) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:39

19 July 2010
IAU Electronic Telegram No.2375


APPARENT NOVA IN M33: M33N 2010-07a

[NOTE: this replaces CBET 2374 (designation is M33N, not M31N)]
Koichi Nishiyama, Kurume, Japan; and Fujio Kabashima, Miyaki, Japan,
report the discovery of an apparent nova (mag 17.2) in the galaxy M33 on
seven 40-s unfiltered CCD frames (limiting magnitude 19.1) taken around July
17.798 UT using a Meade 200R 0.40-m f/9.8 reflector (+ SBIG STL1001E camera).
The new object, which was confirmed at mag 17.1 on two 40-s unfiltered CCD
frames (limiting mag 18.4) taken around July 18.783, is located at R.A. =
1h33m36s.86, Decl. = +30d46'22".2 (equinox 2000.0; reference catalogue
USNO-B1.0), which is 181" west and 405" north of the center of M33.
Nothing is visible at this position on their past frames taken on Mar. 16.438
and 18.442 (limiting magnitude 18.4) or on a Digitized Sky Survey image
from 1991 Oct. 5 (limiting red mag 18.7). M33N 2010-07a was confirmed at
mag 16.5 by T. Yusa, who remotely obtained three 180-s unfiltered CCD
exposures (limiting mag 19.0) with a 0.25-m f/3.4 refrector located at the
RAS Observatory near Mayhill, NM, U.S.A. on July 18.358, from which he
measured position end figures 36s.83, 22".2. Yusa has posted one of his
images at URL http://space.geocities.jp/yusastar/PNinM33_100718.htm, with
M33N 2010-07a marked by two lines.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2375) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:39

19 July 2010
IAU Electronic Telegram No.2376


SUPERNOVA 2010gi IN IC 4660

S. Nakano, Sumoto, Japan, reports the discovery by Masaki Tsuboi
(Kuchita-minami, Asakita-ku, Hiroshima) of an apparent supernova (mag 15.3)
on unfiltered CCD frames (limiting mag 18.2) taken on July 18.514 UT using a
0.30-m f/5.3 reflector (+ ST-2000XM camera); the new object was measured by
Tsuboi to be located at R.A. = 17h21m46s.1, Decl. = +75d50'45".4 (equinox
2000.0), which is 3".2 east and 10".6 south of the center of IC 4660.
Nothing is visible at this position on Tsuboi's past frames taken on May 13
and 30 UT or on a red Digitized Sky Survey photograph. Nakano measures mag
14.9 and position end figures 46s.0, 44".3 (offset 1".8 east, 6".4 south of
the center of IC 4660) from an image (limiting magnitude 17.8) taken by
Tsuboi on July 18.658.
After posting on the Central Bureau's unconfirmed-objects webpage,
Toru Yusa (Osaki, Japan) reports that he confirmed 2010gi at mag 15.0 on
two 120-s unfiltered CCD exposures (limiting mag 18.0) taken on July 19.153
UT remotely using a 0.25-m f/3.4 reflector (+ SBIG ST-10XME camera) at the
RAS Observatory near Mayhill, NM, U.S.A., yielding position end figures
46s.06, 44".5 (USNO-B1.0 catalogue) and offset 2".9 east, 9".8 south; he has
posted his image at http://space.geocities.jp/yusastar/PSNi ... 100719.htm.
Also, D. D. Balam, Dominion Astrophysical Observatory, writes that imaging
using the 1.82-m Plaskett telescope of the National Research Council of
Canada shows the new source to be at magnitude R = 15.8 on July 19.23 with
offset 3".7 east, 9".4 south of the core of IC 4660.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2376) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:40

19 July 2010
IAU Electronic Telegram No.2377


SUPERNOVA 2010gj IN PGC 190539

Filip Novoselnik, on behalf of La Sagra Sky Survey Supernova Search Team
(including also Denis Vida, Ivica Skokic, Robert Gregic, Salvador Sanchez,
Jaime Nomen, Reiner Stoss, Bill Yeung, Juan Rodriguez, and Miguel Hurtado),
reports the discovery of an apparent supernova (mag 17.0) on three CCD images
(limiting magnitude about 20.0) taken on July 20.101, 20.116, and 20.132 UT
with a 0.45-m telescope. The new object, which was also found at V = 18.0
in six stacked 90-s images taken at La Sagra with a 0.40-m telescope on July
16.091, is located at R.A. = 21h50m54s.34, Decl. = -17d46'09".4 (equinox
2000.0), which is 6" west and 5" north of the nucleus of the galaxy PGC
190539. Nothing is present on a Digitized Sky Survey image from 1995 June 5
(limiting red mag 22). A stacked image has been posted at the following
website URL: http://img801.imageshack.us/img801/4003 ... 39cand.png.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2377) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:40

19 July 2010
IAU Electronic Telegram No.2378


SUPERNOVAE 2010gb, 2010gf, 2010gg

Jose L. Prieto, Carnegie Observatories, reports that optical spectra
(range 370-930 nm; resolution 0.7 nm) of 2010gb (cf. CBET 2366), 2010gf (cf.
CBET 2370), and 2010gg (cf. CBET 2371) were obtained with the APO 3.5-m
telescope (+ DIS) on July 18 UT. After cross-correlation with a library of
supernova spectra using SNID (Blondin and Tonry 2007, Ap.J. 666, 1024), the
following spectral classes were determined: 2010gb is a normal type-Ia
supernova whose best spectral template is that of SN 2003cg at 11 days after
maximum light; 2010gf is a type-II supernova a few weeks after explosion,
with the best-fit spectral template being that of SN 1999em at 20 days after
explosion; and 2010gg is an old type-II supernova. After correcting for the
recession velocity of the host galaxy of SN 2010gb (UGC 9947, v = 6748 km/s;
Schneider et al. 1992, Ap.J. Suppl. 81, 5), a blueshift of the Si II (rest
635.5 nm) line is measured to be 11000 km/s. A blueshifted velocity of the
H-alpha P-Cyg profile for SN 2010gf is measured to be 4600 km/s after
correcting for the recession velocity of its host galaxy, UGC 633 (v = 5574
km/s; de Vaucouleurs et al. 1991, Third Reference Catalogue of Bright
Galaxies, via NED).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2378) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:40

19 July 2010
IAU Electronic Telegram No.2379


APPARENT NOVA IN M32

Kamil Hornoch, Astronomical Institute, Ondrejov, reports his discovery
of a possible nova in the galaxy M32 on a co-added 900-s R-band CCD frame
taken on July 9.066 UT with the 0.65-m telescope at Ondrejov. The new object
is marginally visible on single images used for the co-added frame and is
visible also on a pre-discovery co-added R-band CCD frame taken by Hornoch
and P. Hornochova with the same instrumentation on June 26.043, but it is
not present on numerous archive images taken at Ondrejov and other
observatories. The new object, designated M32N 2010-07a, is located at R.A.
= 0h42m32s.43, Decl. = +40o53'36".5 (equinox 2000.0), which is 107" west and
99" north of the center of M32. Available R-band magnitudes for M32N 2010-07a,
as measured by Hornoch: 2001 Nov. 22.321, [22.3 (A. Crotts, 8.2-m Subaru
telescope at Mauna Kea); 2006 Jan. 6.084, [21.5 (J. Gallagher and P. Garnavich,
0.91-m telescope at Kitt Peak); 25.086, [21.4 (Gallagher and Garnavich);
2009 Aug. 30.932, [21.2 (Hornoch, 0.65-m telescope at Ondrejov); 2010 June
26.043, 19.2 +/- 0.25 (Hornoch and Hornochova, 0.65-m telescope at Ondrejov);
July 9.066, 19.3 +/- 0.2 (Hornoch); 16.954, 19.5 +/- 0.15 (Hornoch and
Hornochova).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2379) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:41

19 July 2010
IAU Electronic Telegram No.2380


SUPERNOVA 2010gj IN PGC 190539

[NOTE: this replaces the text on CBET 2377 (discovery date)]
Filip Novoselnik, on behalf of La Sagra Sky Survey Supernova Search Team
(including also Denis Vida, Ivica Skokic, Robert Gregic, Salvador Sanchez,
Jaime Nomen, Reiner Stoss, Bill Yeung, Juan Rodriguez, and Miguel Hurtado),
reports the discovery of an apparent supernova (mag 17.0) on three CCD images
(limiting magnitude about 10.0) taken on July 10.101, 10.116, and 10.132 UT
with a 0.45-m telescope. The new object, which was also found at V = 18.0
in six stacked 90-s images taken at La Sagra with a 0.40-m telescope on July
16.091, is located at R.A. = 21h50m54s.34, Decl. = -17d46'09".4 (equinox
2000.0), which is 6" west and 5" north of the nucleus of the galaxy PGC
190539. Nothing is present on a Digitized Sky Survey image from 1995 June 5
(limiting red mag 22). A stacked image has been posted at the following
website URL: http://img801.imageshack.us/img801/4003 ... 39cand.png.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2380) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:41

19 July 2010
IAU Electronic Telegram No.2381


SUPERNOVA 2010gj IN PGC 190539

[NOTE: this replaces the text on CBET 2380 (limiting mag)]
Filip Novoselnik, on behalf of La Sagra Sky Survey Supernova Search Team
(including also Denis Vida, Ivica Skokic, Robert Gregic, Salvador Sanchez,
Jaime Nomen, Reiner Stoss, Bill Yeung, Juan Rodriguez, and Miguel Hurtado),
reports the discovery of an apparent supernova (mag 17.0) on three CCD images
(limiting magnitude about 20.0) taken on July 10.101, 10.116, and 10.132 UT
with a 0.45-m telescope. The new object, which was also found at V = 18.0
in six stacked 90-s images taken at La Sagra with a 0.40-m telescope on July
16.091, is located at R.A. = 21h50m54s.34, Decl. = -17d46'09".4 (equinox
2000.0), which is 6" west and 5" north of the nucleus of the galaxy PGC
190539. Nothing is present on a Digitized Sky Survey image from 1995 June 5
(limiting red mag 22). A stacked image has been posted at the following
website URL: http://img801.imageshack.us/img801/4003 ... 39cand.png.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2381) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:42

19 July 2010
IAU Electronic Telegram No.2382


SUPERNOVAE 2010gk AND 2010gl

Further to CBET 2368, I. Nayak, S. B. Cenko, W. Li, and A. V. Filippenko,
University of California, report the LOSS discovery of two apparent supernovae
on unfiltered KAIT images:

SN 2010 UT R.A. (2000.0) Decl. Mag. Offset
2010gk July 17.21 14 02 35.94 +32 30 30.7 19.0 1".9 W, 6".3 S
2010gl July 18.29 16 31 38.62 +59 37 26.2 18.8 16".7 W, 10".3 S

Additional KAIT magnitudes for 2010gk in NGC 5433: a co-added image from
Apr.-June, [20.1; July 18.19, 18.9. Additional KAIT magnitudes for 2010gl in
NGC 6189: a co-added image from Apr.-June, [20.2; July 19.26, 18.5.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 19 (CBET 2382) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:42

20 July 2010
IAU Electronic Telegram No.2383


SUPERNOVA 2010gm IN MCG +07-36-25

T. Boles, Coddenham, England, reports the discovery of an apparent
supernova (mag 17.9) on unfiltered CCD images taken on July 19.015 UT with a
0.35-m reflector. The new object is located at R.A. = 17h33m20s.87, Decl. =
+44o06'16".4 (equinox 2000.0), which is approximately 2".0 west and 5".8
south of the center of MCG +07-36-25. J. Brimacombe, Cairns, Australia,
using a remotely operated 50-cm reflector (+ STL6K camera + clear filter) at
New Mexico Skies observatory near Mayhill, NM, U.S.A., obtained a confirmation
image on July 20.147 (limiting mag 20.5); position end figures, measured by
Boles, are 20s.85 and 16".1. Nothing is present at this position on Boles'
images from 2010 Mar. 7 and May 10 (limiting mag 19.5) or on Digitized Sky
Survey plates from 1992 June 1 (limiting red mag 20.5) and 1990 Apr. 2
(limiting blue mag 21.0).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 20 (CBET 2383) Daniel W. E. Green
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Re: IAU Circulars (IAUCs) - циркуляры МАС - 07/2010

Сообщение Tikhon » 07 дек 2010, 10:42

20 July 2010
IAU Electronic Telegram No.2384


SUPERNOVA 2010gi IN IC 4660

M. Yamanaka, Hiroshima University; A. Arai, Kyoto Sangyo University;
and K. Sakimoto, T. Okushima, K. S. Kawabata, Hiroshima University, report
that they obtained low-resolution optical spectra of 2010gi (cf. CBET 2376)
on July 19.7 UT at Higashi-Hiroshima Observatory (resolution, R, of 400),
Hiroshima University, and at Koyama Astronomical Observatory (R = 500), Kyoto
Sangyo University. The spectra have broad absorption features at 540-580 and
590-620 nm, showing some resemblance to that of the type-IIb supernova 1993J
at a week before maximum light. If it is assumed that the features are He I
587.9-nm and H-alpha, the blue-shifts of their line centers correspond to
about -14000 km/s and -23000 km/s, respectively.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

2010 July 20 (CBET 2384) Daniel W. E. Green
Модератор Астрономического Форума ASTROTALK
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