Astronomy:NGC 664
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| NGC 664 | |
|---|---|
 Spiral galaxy NGC 664 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Pisces |
| Right ascension | 01h 43m 45.7857s[1] |
| Declination | +04° 13′ 22.486″[1] |
| Redshift | 0.018113 [1] |
| Helio radial velocity | 5430 ± 3 km/s[1] |
| Distance | 247.1 ± 17.3 Mly (75.77 ± 5.31 Mpc)[1] |
| Group or cluster | NGC 664 Group |
| Apparent magnitude (V) | 12.8[1] |
| Characteristics | |
| Type | Sb?[1] |
| Size | ~114,600 ly (35.14 kpc) (estimated)[1] |
| Apparent size (V) | 1.1′ × 0.9′[1] |
| Other designations | |
| IRAS 01411+0358, UGC 1210, MCG+01-05-029, PGC 6359[1] | |
NGC 664 is a spiral galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 5137 ± 21 km/s, which corresponds to a Hubble distance of 247.1 ± 17.3 Mly (75.77 ± 5.31 Mpc).[1] In addition, six non redshift measurements give a closer distance of 218.91 ± 3.66 Mly (67.117 ± 1.123 Mpc).[2] It was discovered by British astronomer John Herschel on 24 September 1830.[3]
Supernovae
Three supernovae have been observed in NGC 664:
- SN 1996bw (Type II, mag. 17.5) was discovered by the BAO Supernova Survey on 30 November 1996.[4][5]
- SN 1997W (Type II, mag. 18) was discovered by the Harvard–Smithsonian Center for Astrophysics on 1 February 1997.[6][7]
- SN 1999eb (Type IIn, mag. 16.2) was discovered by the Lick Observatory Supernova Search (LOSS) on 2 October 1999.[8][9]
NGC 664 Group
NGC 664 is the namesake of the four member NGC 664 group. The other three galaxies are: IC 150, UGC 1204, and UGC 1240.[10]
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 "Results for object NGC 664". NASA and Caltech. http://ned.ipac.caltech.edu/byname?objname=NGC+664.
- ↑ "Distance Results for NGC 664". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+664.
- ↑ Seligman, Courtney. "NGC 664". https://cseligman.com/text/atlas/ngc6a.htm#664.
- ↑ Li, W.; Qiao, Q.; Qiu, Y.; Hu, J.; Wei, J.; Xiu, D. (1996). "Supernova 1996bw in NGC 664". International Astronomical Union Circular (6512): 1. Bibcode: 1996IAUC.6512....1L. http://www.cbat.eps.harvard.edu/iauc/06500/06512.html#Item1.
- ↑ "SN 1996bw". IAU. https://www.wis-tns.org/object/1996bw.
- ↑ Berlind, P.; Garnavich, P.; Hergenrother, C. (1997). "Supernovae 1997W and 1996bw in NGC 664". International Astronomical Union Circular (6551): 1. Bibcode: 1997IAUC.6551....1B. http://www.cbat.eps.harvard.edu/iauc/06500/06551.html#Item1.
- ↑ "SN 1997W". IAU. https://www.wis-tns.org/object/1997W.
- ↑ Modjaz, M.; Li, W. D.; Garnavich, P.; Jha, S.; Challis, P.; Kirshner, R.; Berlind, P. (1999). "Supernova 1999eb in NGC 664". International Astronomical Union Circular (7268): 1. Bibcode: 1999IAUC.7268....1M. http://www.cbat.eps.harvard.edu/iauc/07200/07268.html#Item1.
- ↑ "SN 1999eb". IAU. https://www.wis-tns.org/object/1999eb.
- ↑ Zabludoff, Ann I.; Mulchaey, John S. (1998). "The Properties of Poor Groups of Galaxies. I. Spectroscopic Survey and Results". The Astrophysical Journal 496 (1): 39–72. doi:10.1086/305355. Bibcode: 1998ApJ...496...39Z.
External links
- NGC 664 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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