Astronomy:NGC 7004
From HandWiki
| NGC 7004 | |
|---|---|
 NGC 7004 (bottom) and NGC 7002 (top) with legacy survey | |
| Observation data (J2000 epoch) | |
| Constellation | Indus |
| Right ascension | 21h 04m 02.2s[1] |
| Declination | −49° 06′ 51″[1] |
| Redshift | 0.025284 |
| Helio radial velocity | 7580 km/s[1] |
| Distance | 330 Mly (101 Mpc)[1] |
| Apparent magnitude (V) | 13.8[1] |
| Absolute magnitude (B) | -21.87 ± 0.09 [1] |
| Characteristics | |
| Type | (R')SAB0/a?(s)[1] |
| Size | ~139,500 ly (42.78 kpc) (estimated) |
| Apparent size (V) | 1.31× 0.44[1] |
| Other designations | |
| ESO 235-46, FAIR 938, PGC 66019[1] | |
NGC 7004 is a lenticular galaxy[1] and a type 2 Seyfert galaxy[2] around 330 million light-years away from Earth in the constellation Indus.[3][1] NGC 7004 has an estimated diameter of 140,000 light-years.[1] NGC 7004 was discovered by astronomer John Herschel on October 2, 1834.[4] NGC 7004 is a member of a group of galaxies[5] known as [T2015] nest 200093.[6] The group contains 12 member galaxies including NGC 7002, has a velocity dispersion of 440 km/s and an estimated mass of 1.28 × 1014 M☉.[5] NGC 7004 is also host to a supermassive black hole with an estimated mass of 8.1 × 108 M☉.[7]
See also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 "NED results for object NGC 7004". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=Ngc+7004&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ "NGC 7004". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+7004.
- ↑ Rojas, Sebastián García. "Galaxy NGC 7004 Deep Sky Objects Browser" (in en). https://dso-browser.com/deep-sky/8191/ngc-7004/galaxy.
- ↑ "New General Catalog Objects: NGC 7000 - 7049" (in en-US). http://cseligman.com/text/atlas/ngc70.htm.
- ↑ 5.0 5.1 Tully, R. Brent (2015-05-01). "Galaxy Groups: A 2MASS Catalog". The Astronomical Journal 149 (5): 171. doi:10.1088/0004-6256/149/5/171. ISSN 0004-6256. Bibcode: 2015AJ....149..171T. https://ui.adsabs.harvard.edu/abs/2015AJ....149..171T.
- ↑ "[T2015 nest 200093"]. https://simbad.cds.unistra.fr/simbad/sim-id?Ident=@11275076&Name=%5BT2015%5D%20nest%20200093&submit=submit.
- ↑ Arzoumanian, Zaven; Baker, Paul T.; Brazier, Adam; Brook, Paul R.; Burke-Spolaor, Sarah; Becsy, Bence; Charisi, Maria; Chatterjee, Shami et al. (2021-06-01). "The NANOGrav 11 yr Data Set: Limits on Supermassive Black Hole Binaries in Galaxies within 500 Mpc". The Astrophysical Journal 914 (2): 121. doi:10.3847/1538-4357/abfcd3. ISSN 0004-637X. Bibcode: 2021ApJ...914..121A.
External links
- NGC 7004 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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