Astronomy:NGC 6261
| NGC 6261 | |
|---|---|
 NGC 6261 imaged by Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Hercules |
| Right ascension | 16h 56m 30.526s[1] |
| Declination | +27° 58′ 39.24″[1] |
| Redshift | 0.035184 |
| Helio radial velocity | 10,601 km/s |
| Distance | 471.4 Mly (144.53 Mpc) |
| Apparent magnitude (V) | 14.5 |
| Characteristics | |
| Type | S0/a |
| Size | 200,000 ly |
| Other designations | |
| PGC 59286, UGC 10617, MCG +05-40-006, CGCG 169-013, 2MASX J16563054+2758392, SDSS J165630.51+275839.0, UZC J165630.6+275839, NSA 070084, NVSS J165630+275838, LEDA 59286 | |
NGC 6261 is a lenticular galaxy in the constellation of Hercules.[2][3] It is located 470 million light-years away from the Solar System and has an approximate diameter of 200,000 light-years.[4]
NGC 6261 was discovered on July 13, 1880, by French astronomer Edouard Stephan.[5] The galaxy is described as LINER according to SIMBAD database[1] and presents emission spectrum in its nucleus which is categorized by broad lines of weak ionized atoms.
Supernovae
Two supernovae have been discovered in NGC 6261: SN 2007hu and SN 2008dt.
SN 2007hu
SN 2007hu[6] was discovered on September 9, 2007, by astronomers Ernesto Guido, A. Sehgal and Tim Puckett.[7] It had a magnitude of 17.7 and was located 1".3 west and 1".4 north of the nucleus. The supernova was Type la.[6]
SN 2008dt
SN 2008dt[8] was discovered on 30 June, 2008,[9] by astronomers D. Madison, W. Li and A.V. Filippenko at the University of California, Berkeley.[10] It had a magnitude of 17.2 and was located 1".0 east and 5.5" south of the nucleus.[11] The supernova was Type la.[8]
See also
References
- ↑ 1.0 1.1 1.2 "NGC 6261". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+6261.
- ↑ Astronomy, Go. "NGC 6261 | galaxy in Hercules | NGC List | GO ASTRONOMY" (in en-US). https://www.go-astronomy.com/ngc.php?ID=6686.
- ↑ "NGC 6261 - Lenticular Galaxy in Hercules | TheSkyLive.com". https://theskylive.com/sky/deepsky/ngc6261-object.
- ↑ "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=44034&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 6261". https://cseligman.com/text/atlas/ngc62a.htm#6261.
- ↑ 6.0 6.1 "SN 2007hu | Transient Name Server". https://www.wis-tns.org/object/2007hu.
- ↑ "Bright Supernovae - 2007.". https://www.rochesterastronomy.org/sn2007/index.html#2007hu.
- ↑ 8.0 8.1 "SN 2008dt | Transient Name Server". https://www.wis-tns.org/object/2008dt.
- ↑ "SN 2008dt - Home". http://www.astrosurf.com/snweb2/2008/08dt/08dtHome.htm.
- ↑ Madison, D.; Li, W.; Filippenko, A. V. (2008-07-01). "Supernovae 2008dt and 2008du". Central Bureau Electronic Telegrams (1423): 1. Bibcode: 2008CBET.1423....1M. https://ui.adsabs.harvard.edu/abs/2008CBET.1423....1M.
- ↑ "Bright Supernovae - 2008.". https://www.rochesterastronomy.org/sn2008/index.html.
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