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NGC 5084
View on Wikipedia| NGC 5084 | |
|---|---|
 NGC 5084 by 32 in Schulman Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 13h 20m 16.8346s[1][2] |
| Declination | −21° 49′ 38.416″[1][2] |
| Redshift | 0.005741±0.000010[2] |
| Heliocentric radial velocity | 1,721±3 km/s[2] |
| Galactocentric velocity | 1,599±6 km/s[2] |
| Distance | 81.87 ± 5.871 Mly (25.1 ± 1.8 Mpc)h−1 0.6774 (Comoving)[2] 97 Mly (29.74 Mpc)h−1 0.6774 (Light-travel)[2] |
| Group or cluster | NGC 5084 Group |
| Apparent magnitude (V) | 12.21[3] |
| Apparent magnitude (B) | 11.15[4] |
| magnitude (J) | 8.014±0.018[5][6] |
| magnitude (H) | 7.256±0.020[5][6] |
| magnitude (K) | 7.058±0.027[5][6] |
| Characteristics | |
| Type | S0[2] |
| Mass | (6–10)×1012[7] M☉ |
| Size | 769,500 ly × 115,430 ly (235.93 kpc × 35.39 kpc) (diameter; 90% total B-band light)[2][a] 189,760 ly × 72,048 ly (58.18 kpc × 22.09 kpc) (diameter; "total" magnitude)[2][a] |
| Apparent size (V) | 12.02′ × 2.75′[8][6] |
| Notable features | Supermassive disk galaxy |
| Other designations | |
| ESO 576- G 033, MCG -04-32-004, PGC 46525[2] | |
NGC 5084 is a Seyfert 2[6] lenticular galaxy in the constellation of Virgo. It is located at a distance of about 25.1 megaparsecs (81.9 million light-years) from Earth, which, given its apparent dimensions using the 90% total light definition, means that NGC 5084 is 236 kiloparsecs (770,000 light-years) across. It is one of the largest and most massive galaxies in the Virgo Supercluster. William Herschel discovered it on March 10, 1785. It is a member of the NGC 5084 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[9] The galaxy is seen nearly edge-on, with inclination 86°, and features a warped disk and large quantities of HI gas extending along the disk, probably accumulated after multiple accretions of smaller galaxies.[10] NGC 5084 also possess an active galactic nucleus.[6]
Mass and size estimates
[edit]NGC 5084 is a very massive system, with a high rotational speed of about 328 km/s.[10] It is categorised as a supermassive disk galaxy.[11] Gottesen (1986) estimated based on the rotational speed that the mass of NGC 5084 is 8.5×1011 M☉ and its radius to be 34 kpc for an estimated distance of 15.5 Mpc.[10] Gottesman et al. (2002) using the same method adopted as distance the 30 Mpc and calculated the mass of NGC 5084 to be 1.7×1012 M☉.[12] Koribalski et al. (2004) measured the rotational speed of NGC 5084 to be 334 km/s and calculated its mass to be 1.3×1012 M☉ and its radius was estimated at 50 kpc.[13] Carrignan et al. (1997) measured the velocity differences and projected separations of nine galaxies they identified as satellites of NGC 5084 and using different equations they estimated the mass of NGC 5084 to be between 6×1012 M☉ and 1×1013 M☉, which was at that time the highest mass ever derived for a disk galaxy. They estimated the optical diameter of NGC 5084 to be 74 kpc.[7]
An estimation of NGC 5084's size using the 90% total light definition yields a very substantial apparent diameter of 1,949.84 arcseconds, which corresponds to a diameter of 235.93 kiloparsecs (770,000 light-years) assuming the currently accepted distance to the galaxy.[2][a] This would make it one of the largest known lenticular and supermassive disk galaxies.
Nearby galaxies
[edit]NGC 5084 is the largest galaxy in the NGC 5084 group, which also includes NGC 5087 and NGC 5134 and some smaller galaxies. The galaxy group is compact, showing little redshift dispersion. NGC 5068 is a foreground galaxy.[14] Other nearby galaxy groups include the NGC 5078 group, which includes NGC 5078, NGC 5061, and NGC 5101, and NGC 4965 group.[15] NGC 5084 is located at end of Virgo II groups, a filament of galaxy groups that extends southwards from the Virgo Cluster,[16][17] and is part of the Virgo Supercluster.[17][18]
See also
[edit]Gallery
[edit]-
NGC 5084 (SDSS DR14) -
NGC 5084 by Hubble Space Telescope -
Pan-STARRS image of NGC 5084 -
NGC 5084 by 2MASS
Notes
[edit]- ^ a b c The quick-look major axis physical diameters given by NED of 422.55 by 63.38 kiloparsecs (1,380,000 by 207,000 light-years) and 104.11 by 39.56 kiloparsecs (340,000 by 129,000 light-years) were based on a distance estimate of 44.700 ± 42.360 megaparsecs (145.8 ± 138.2 million light-years). The quoted diameters in this infobox were based on NED's provided scale "Virgo + GA + Shapley" of 121 pc/arcsec multiplied by the given angular diameters.
References
[edit]- ^ a b Irwin, Judith; Dyer, Jacqueline; Drake, Leonardo; Wang, Q. Daniel; Stil, Jeroen; Stein, Yelena; English, Jayanne; Wiegert, Theresa (2022). "CHANG-ES - XXVII. A radio/X-ray catalogue of compact sources in and around edge-on galaxies". Monthly Notices of the Royal Astronomical Society. 512 (4): 5755. arXiv:2202.13225. Bibcode:2022MNRAS.512.5755I. doi:10.1093/mnras/stac659.
- ^ a b c d e f g h i j k l NGC 5084 on NASA/IPAC Extragalactic Database
- ^ Véron-Cetty, M. -P.; Véron, P. (2010). "A catalogue of quasars and active nuclei: 13th edition". Astronomy and Astrophysics. 518: A10. Bibcode:2010A&A...518A..10V. doi:10.1051/0004-6361/201014188.
- ^ Lauberts, Andris; Valentijn, Edwin A. (1989). "The surface photometry catalogue of the ESO-Uppsala galaxies". Garching: European Southern Observatory. Bibcode:1989spce.book.....L.
- ^ a b c Skrutskie, M. F.; et al. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
- ^ a b c d e f {{{label}}}
- ^ a b Carignan, Claude; Cote, Stephanie; Freeman, Kenneth C.; Quinn, Peter J. (May 1997). "NGC 5084: A Massive Disk Galaxy Accreting its Satellites?". The Astronomical Journal. 113: 1585. arXiv:astro-ph/9704032. Bibcode:1997AJ....113.1585C. doi:10.1086/118376. S2CID 9753595.
- ^ Paturel, G.; Petit, C.; Prugniel, Ph.; Theureau, G.; Rousseau, J.; Brouty, M.; Dubois, P.; Cambrésy, L. (2003). "HYPERLEDA. I. Identification and designation of galaxies". Astronomy and Astrophysics. 412: 45. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
- ^ "The Virgo II Groups". www.atlasoftheuniverse.com. Retrieved 2025-05-18.
- ^ a b c Gottesman, S. T.; Hawarden, T. G. (1 April 1986). "Optical and high-resolution H I observations of the massive and unusual lenticular galaxy NGC 5084". Monthly Notices of the Royal Astronomical Society. 219 (4): 759–775. Bibcode:1986MNRAS.219..759G. doi:10.1093/mnras/219.4.759.
- ^ Buson, L. M.; Galletta, G.; Saglia, R. P.; Zeilinger, W. W. (March 1991). "Supermassive disk galaxies". ESO Messenger. 63 (63): 50–52. Bibcode:1991Msngr..63...50B. ISSN 0722-6691.
- ^ Gottesman, S. T.; Hunter, J. H.; Boonyasait, V. (November 2002). "On the mass of M31". Monthly Notices of the Royal Astronomical Society. 337 (1): 34–40. arXiv:astro-ph/0207450. Bibcode:2002MNRAS.337...34G. doi:10.1046/j.1365-8711.2002.05793.x. S2CID 119429719.
- ^ Koribalski, B. S.; Staveley-Smith, L.; Kilborn, V. A.; Ryder, S. D.; Kraan-Korteweg, R. C.; Ryan-Weber, E. V.; Ekers, R. D.; Jerjen, H.; Henning, P. A.; Putman, M. E.; Zwaan, M. A.; de Blok, W. J. G.; Calabretta, M. R.; Disney, M. J.; Minchin, R. F.; Bhathal, R.; Boyce, P. J.; Drinkwater, M. J.; Freeman, K. C.; Gibson, B. K.; Green, A. J.; Haynes, R. F.; Juraszek, S.; Kesteven, M. J.; Knezek, P. M.; Mader, S.; Marquarding, M.; Meyer, M.; Mould, J. R.; Oosterloo, T.; O'Brien, J.; Price, R. M.; Sadler, E. M.; Schröder, A.; Stewart, I. M.; Stootman, F.; Waugh, M.; Warren, B. E.; Webster, R. L.; Wright, A. E. (July 2004). "The 1000 Brightest HIPASS Galaxies: H Properties". The Astronomical Journal. 128 (1): 16–46. arXiv:astro-ph/0404436. Bibcode:2004AJ....128...16K. doi:10.1086/421744. S2CID 16229767.
- ^ Firth, P.; Evstigneeva, E. A.; Jones, J. B.; Drinkwater, M. J.; Phillipps, S.; Gregg, M. D. (11 November 2006). "Kinematics, substructure and luminosity-weighted dynamics of six nearby galaxy groups". Monthly Notices of the Royal Astronomical Society. 372 (4): 1856–1868. arXiv:astro-ph/0608584. Bibcode:2006MNRAS.372.1856F. doi:10.1111/j.1365-2966.2006.10993.x. S2CID 18646500.
- ^ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x. S2CID 119194025.
- ^ "The Virgo II Groups". www.atlasoftheuniverse.com.
- ^ a b Tully, R. Brent (1988). Nearby galaxies catalog. Cambridge ; New York: Cambridge University Press. ISBN 978-0-521-35299-4.
- ^ Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (May 1992). "Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233. Bibcode:1992A&AS...93..211F. ISSN 0365-0138.
Further reading
[edit]- Theureau, G.; Hanski, M. O.; Coudreau, N.; Hallet, N.; Martin, J.-M. (19 December 2006). "Kinematics of the Local Universe". Astronomy & Astrophysics. 465 (1): 71–85. arXiv:astro-ph/0611626. Bibcode:2007A&A...465...71T. doi:10.1051/0004-6361:20066187. S2CID 14251529.
External links
[edit]- "NGC5084". HyperLeda. University of Lyon.
- NGC 5084 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
