NGC 5238

NGC 5238
Hubble Space Telescope image of NGC 5238
Observation data (J2000 epoch)
ConstellationCanes Venatici
Right ascension13h 34m 43.8s[1]
Declination+51° 36′ 33″[1]
Redshift0.0015[2]
Heliocentric radial velocity229 km/s[3]
Distance4.51 Mpc[4]
Characteristics
TypeIrr[5][failed verification]
Mass1.17×106[6] M☉
Mass/Light ratio0.6[7] M☉/L☉
Apparent size (V)64.4"[8]
Other designations
UGC 8565, VV 828, Mrk 1479, SBS 1332+518, I Zw 64, KPG 384

NGC 5238 is an irregular galaxy[5] in the constellation Canes Venatici. Located at a comoving distance of 4.51 Mpc,[4] it is 64.4 arcseconds in diameter.[8] It has sometimes been classified as a blue compact dwarf galaxy.[9] Although some authors have hypothesized it to be a member of the M101 Group of galaxies, it is currently believed to be an isolated galaxy.[10]

At an inclination of 39° with respect to Earth,[3] NGC 5238 has a total mass of 117 million solar masses,[6] with a star formation rate of 0.01 solar masses per year.[11] Of the total mass, HI gas appears to account for 26 million solar masses.[3]

  1. ^ a b 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: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
  2. ^ Gyulzadyan, M. V.; Stepanian, J. A.; Petrosian, A. R.; Kunth, D.; McLean, B.; Comte, G. (2003). "Spectroscopic Study of a Large Sample of Galaxies Discovered in the Second Byurakan Survey Fields". Astrophysics (English Translation of Astrofizika). 46 (2): 131. Bibcode:2003Ap.....46..131G. doi:10.1023/A:1024011318696. S2CID 118938315.
  3. ^ a b c Karachentsev, Igor D.; Makarov, Dmitry I.; Kaisina, Elena I. (2013). "Updated Nearby Galaxy Catalog". The Astronomical Journal. 145 (4): 101. arXiv:1303.5328. Bibcode:2013AJ....145..101K. doi:10.1088/0004-6256/145/4/101. S2CID 118585268.
  4. ^ a b Jacobs, Bradley A.; Rizzi, Luca; Tully, R. Brent; Shaya, Edward J.; Makarov, Dmitry I.; Makarova, Lidia (2009). "The Extragalactic Distance Database: Color-Magnitude Diagrams". The Astronomical Journal. 138 (2): 332. arXiv:0902.3675. Bibcode:2009AJ....138..332J. doi:10.1088/0004-6256/138/2/332. S2CID 15727705.
  5. ^ a b Buta, Ronald J.; Sheth, Kartik; Athanassoula, E.; Bosma, A.; Knapen, Johan H.; Laurikainen, Eija; Salo, Heikki; Elmegreen, Debra; Ho, Luis C.; Zaritsky, Dennis; Courtois, Helene; Hinz, Joannah L.; Muñoz-Mateos, Juan-Carlos; Kim, Taehyun; Regan, Michael W.; Gadotti, Dimitri A.; Gil De Paz, Armando; Laine, Jarkko; Menéndez-Delmestre, Karín; Comerón, Sébastien; Erroz Ferrer, Santiago; Seibert, Mark; Mizusawa, Trisha; Holwerda, Benne; Madore, Barry F. (2015). "A Classical Morphological Analysis of Galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S4G)". The Astrophysical Journal Supplement Series. 217 (2): 32. arXiv:1501.00454. Bibcode:2015ApJS..217...32B. doi:10.1088/0067-0049/217/2/32. S2CID 119202943.
  6. ^ a b Cook, David O.; Dale, Daniel A.; Johnson, Benjamin D.; Van Zee, Liese; Lee, Janice C.; Kennicutt, Robert C.; Calzetti, Daniela; Staudaher, Shawn M.; Engelbracht, Charles W. (2014). "Spitzer Local Volume Legacy (LVL) SEDs and physical properties". Monthly Notices of the Royal Astronomical Society. 445 (1): 899–912. arXiv:1409.0847. Bibcode:2014MNRAS.445..899C. doi:10.1093/mnras/stu1787. S2CID 118469122.
  7. ^ Huchtmeier, W. K.; Richter, O.-G. (1988). "H I observations of galaxies in the Kraan-Korteweg-Tammann catalogue of nearby galaxies. III - Global parameters of the galaxies". Astronomy and Astrophysics. 203: 237. Bibcode:1988A&A...203..237H.
  8. ^ a b Cite error: The named reference Spitzer was invoked but never defined (see the help page).
  9. ^ Ann, H. B.; Seo, Mira; Ha, D. K. (2015). "A Catalog of Visually Classified Galaxies in the Local (z ∼ 0.01) Universe". The Astrophysical Journal Supplement Series. 217 (2): 27. arXiv:1502.03545. Bibcode:2015ApJS..217...27A. doi:10.1088/0067-0049/217/2/27. S2CID 119253507.
  10. ^ Tikhonov, N. A.; Lebedev, V. S.; Galazutdinova, O. A. (2015). "M 101 group galaxies". Astronomy Letters. 41 (6): 239. Bibcode:2015AstL...41..239T. doi:10.1134/S1063773715060080. S2CID 122692981.
  11. ^ Karachentsev, Igor D.; Kaisina, Elena I. (2013). "Star Formation Properties in the Local Volume Galaxies via Hα and Far-ultraviolet Fluxes". The Astronomical Journal. 146 (3): 46. arXiv:1305.4791. Bibcode:2013AJ....146...46K. doi:10.1088/0004-6256/146/3/46. S2CID 119188439.