NGC 2835

NGC 2835
NGC 2835 by Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationHydra
Right ascension09h 17m 52.9s[1]
Declination−22° 21′ 17″[1]
Redshift0.002955 ± 0.000007 [1]
Heliocentric radial velocity886 ± 2 km/s[1]
Distance33.8 ± 8.5 Mly (10.4 ± 2.6 Mpc)[1]
Apparent magnitude (V)10.3[2]
Characteristics
TypeSAB(rs)c [1]
Apparent size (V)6.6′ × 4.4′[1]
Notable featuresExtended HIPASS source[1]
Other designations
UGCA 157, ESO 564-G035, AM 0915-220, MCG -04-22-008, PGC 26259[1]

NGC 2835 is an intermediate spiral galaxy located in the constellation Hydra. It is located at a distance of circa 35 million light years from Earth, which, given its apparent dimensions, means that NGC 2835 is about 65,000 light years across. It was discovered by Wilhelm Tempel on April 13, 1884.[3] NGC 2835 is located only 18.5 degrees from the galactic plane.[4]

NGC 2835 is seen nearly face-on. The galaxy features four or five spiral arms, visible in near infrared due to their population II stars.[5] The spiral arms have also numerous HII regions and stellar associations, the larger of which are 5 arcseconds across.[4] Although the galaxy is quite symmetric, the northern arms have HII regions that appear brighter than the southern ones. Also the southern arms appear less developed in their outer parts than the north ones.[6] The star formation rate in NGC 2835 is 1.3 M☉ per year and the total stellar mass of the galaxy is 1010 M☉.[7] In the centre of NGC 2835 lies a supermassive black hole whose mass is estimated to be 3-10 million (106.72±0.3) M☉, based on the spiral arm pitch angle.[8]

NGC 2835 is the foremost galaxy in a small group of galaxies, the NGC 2835 group. Other galaxies identified as members of the cluster are ESO 497-035, and ESO 565-001.[9] A bit farther away, at projected separation of 2.2 degrees, lies NGC 2784 and its small galaxy group.[4][9]

  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 2835. Retrieved 2016-01-18.
  2. ^ "Revised NGC Data for NGC 2835". spider.seds.org. Retrieved 25 November 2018.
  3. ^ Seligman, Courtney. "NGC 2835 (= PGC 26259)". Celestial Atlas. Retrieved 19 November 2018.
  4. ^ a b c Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  5. ^ Kirby, Emma M.; Jerjen, Helmut; Ryder, Stuart D.; Driver, Simon P. (1 November 2008). "Deep Near-Infrared Surface Photometry of 57 Galaxies in the Local Sphere of Influence". The Astronomical Journal. 136 (5): 1866–1888. arXiv:0808.2529. Bibcode:2008AJ....136.1866K. doi:10.1088/0004-6256/136/5/1866. S2CID 5060046.
  6. ^ Ryder, Stuart D.; Dopita, Michael A. (October 1993). "An H-alpha atlas of nearby southern spiral galaxies". The Astrophysical Journal Supplement Series. 88: 415. Bibcode:1993ApJS...88..415R. doi:10.1086/191827.
  7. ^ Leroy, Adam K.; Schinnerer, Eva; Hughes, Annie; Rosolowsky, Erik; Pety, Jérôme; Schruba, Andreas; Usero, Antonio; Blanc, Guillermo A.; Chevance, Mélanie; Emsellem, Eric; Faesi, Christopher M. (2021-12-01). "PHANGS–ALMA: Arcsecond CO(2–1) Imaging of Nearby Star-forming Galaxies". The Astrophysical Journal Supplement Series. 257 (2): 43. arXiv:2104.07739. Bibcode:2021ApJS..257...43L. doi:10.3847/1538-4365/ac17f3. hdl:1854/LU-8747473. ISSN 0067-0049. S2CID 233289674.
  8. ^ Davis, Benjamin L.; Berrier, Joel C.; Johns, Lucas; Shields, Douglas W.; Hartley, Matthew T.; Kennefick, Daniel; Kennefick, Julia; Seigar, Marc S.; Lacy, Claud H. S. (20 June 2014). "The Black Hole Mass Function Derived from Local Spiral Galaxies". The Astrophysical Journal. 789 (2): 124. arXiv:1405.5876. Bibcode:2014ApJ...789..124D. doi:10.1088/0004-637X/789/2/124. S2CID 119302157.
  9. ^ a b 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.