Astronomy:NGC 5490
| NGC 5490 | |
|---|---|
| File:250px SDSS image of NGC 5490 | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 09m 57.330s[1] |
| Declination | +17° 32′ 43.53″[1] |
| Redshift | 0.016693[2] |
| Helio radial velocity | 4838 ± 14 km/s[3] |
| Distance | 225.63 ± 0.29 Mly (69.18 ± 0.09 Mpc)[4] |
| Group or cluster | NGC 5490 Group (LGG 376) |
| Apparent magnitude (V) | 12.9[3] |
| Characteristics | |
| Type | E[3] |
| Size | ~188,400 ly (57.75 kpc) (estimated)[3] |
| Apparent size (V) | 1.443′ × 1.126′[1] |
| Notable features | See also Gra 1408+17 |
| Other designations | |
| 2MASX J14095733+1732435, 4C 17.57, CGCG 103.095, GC 3798, H III-32, h 1752, LEDA 50558, LGG 376-001, MITG J1409+1732, MCG+03-36-065, MRC 1407+177, OHIO Q 112, PGC 50558, PKS 1407+17, UGC 9058, UT 1407+178, UZC J140957.3+173244, VRO 17.14.01, Z 103-95, Z 1407.6+1747 | |
NGC 5490 is a large elliptical galaxy located in the constellation of Boötes. Its velocity relative to the cosmic microwave background is 5,075 ± 22 km/s, which corresponds to a Hubble distance of 244.1 ± 17.1 Mly (74.85 ± 5.25 Mpc).[3] In addition, 13 non-redshift measurements gives a distance of 269.98 ± 15.01 Mly (82.777 ± 4.603 Mpc).[5] NGC 5490 was discovered by the German-British astronomer William Herschel on 14 March 1784.[6]
Supernovae
Two supernovae have been observed in NGC 5490:
- SN 1997cn (Type Ia, mag. 15.8) was discovered by the BAO Supernova Survey on 14 May 1997.[7][8]
- SN 2015bo (Type Ia, mag. 18.4) was discovered by the Catalina Real-time Transient Survey on 14 February 2015.[9]
Supermassive Black Hole
According to a study published in 2009 and based on the internal velocity of the galaxy measured by the Hubble Space Telescope, the mass of the supermassive black hole at the center of NGC 5490 is between 260 million and 1.9 billion M☉.[10]
GRA B1408+17
According to the SIMBAD database, NGC 5490 is a radio galaxy.[11] GRA B1408+17 is a radio-source in NGC 5490 located at the coordinates RA 14h 10m 24s, DEC +17° 32′ 00″.[12]
NGC 5490 Group
According to A.M. Garcia, NGC 5490 is the main galaxy in a group that bears its name. The NGC 5490 group (also known as LGG 376) has three other members: IC 982, IC 984, and UGC 9078.[13]
References
- ↑ 1.0 1.1 1.2 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S.
- ↑ Kochanek, C. S. et al. (October 2001), "The K-Band Galaxy Luminosity Function", The Astrophysical Journal 560 (2): 566–579, doi:10.1086/322488, Bibcode: 2001ApJ...560..566K.
- ↑ 3.0 3.1 3.2 3.3 3.4 "NED results for object NGC 5490", NASA/IPAC Extragalactic Database, https://ned.ipac.caltech.edu/byname?objname=NGC+5490, retrieved 2015-10-29.
- ↑ Tully, R. Brent et al. (October 2013), "Cosmicflows-2: The Data", The Astronomical Journal 146 (4): 25, doi:10.1088/0004-6256/146/4/86, 86, Bibcode: 2013AJ....146...86T.
- ↑ "Distance Results for NGC 5490". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+5490.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5490". https://cseligman.com/text/atlas/ngc54a.htm#5490.
- ↑ Li, W. -D.; Qiu, Y. -L.; Qiao, Q. -Y.; Zhang, Y.; Zhou, W.; Hu, J. -Y. (1997). "Supernova 1997cn in NGC 5490". International Astronomical Union Circular (6661): 1. Bibcode: 1997IAUC.6661....1L. http://www.cbat.eps.harvard.edu/iauc/06600/06661.html#Item1.
- ↑ "SN 1997cn". IAU. https://www.wis-tns.org/object/1997cn.
- ↑ "SN 2015bo". IAU. https://www.wis-tns.org/object/2015bo.
- ↑ Beifiori, A.; Sarzi, M.; Corsini, E. M.; Bontà, E. Dalla; Pizzella, A.; Coccato, L.; Bertola, F. (2009). "UPPER LIMITS ON THE MASSES OF 105 SUPERMASSIVE BLACK HOLES FROM HUBBLE SPACE TELESCOPE /SPACE TELESCOPE IMAGING SPECTROGRAPH ARCHIVAL DATA". The Astrophysical Journal 692 (1): 856–868. doi:10.1088/0004-637X/692/1/856. Bibcode: 2009ApJ...692..856B.
- ↑ "NGC 5490". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5490.
- ↑ "GRA B1408+17". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GRA+B1408%2B17.
- ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100: 47. Bibcode: 1993A&AS..100...47G.
External links
Template:NGC objects:5000-5499
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