NGC 5490
| NGC 5490 | |
|---|---|
 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] |
| Heliocentric 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
[edit]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
[edit]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
[edit]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
[edit]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
[edit]- ^ a b c Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
- ^ Kochanek, C. S.; et al. (October 2001), "The K-Band Galaxy Luminosity Function", The Astrophysical Journal, 560 (2): 566–579, arXiv:astro-ph/0011456, Bibcode:2001ApJ...560..566K, doi:10.1086/322488, S2CID 119420446.
- ^ a b c d e "NED results for object NGC 5490", NASA/IPAC Extragalactic Database, retrieved 2015-10-29.
- ^ Tully, R. Brent; et al. (October 2013), "Cosmicflows-2: The Data", The Astronomical Journal, 146 (4): 25, arXiv:1307.7213, Bibcode:2013AJ....146...86T, doi:10.1088/0004-6256/146/4/86, S2CID 118494842, 86.
- ^ "Distance Results for NGC 5490". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 11 December 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5490". Celestial Atlas. Retrieved 11 December 2024.
- ^ 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.
- ^ "SN 1997cn". Transient Name Server. IAU. Retrieved 11 December 2024.
- ^ "SN 2015bo". Transient Name Server. IAU. Retrieved 11 December 2024.
- ^ 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. arXiv:0809.5103. Bibcode:2009ApJ...692..856B. doi:10.1088/0004-637X/692/1/856.
- ^ "NGC 5490". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 December 2024.
- ^ "GRA B1408+17". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 December 2024.
- ^ 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
[edit]Media related to NGC 5490 at Wikimedia Commons
- Distance Archived 2011-06-07 at the Wayback Machine
- Image NGC 5490
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