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NGC 4305 is a dwarf spiral galaxy[2] located about 100 million light-years away[3] in the constellation Virgo. The galaxy was discovered by astronomer John Herschel on May 2, 1829.[4] Although considered to be a member of the Virgo Cluster,[2][5] its high radial velocity and blue luminosity suggest it is in fact a background galaxy.[6] The galaxy has a nearby major companion; NGC 4306.[6]

NGC 4305
SDSS image of NGC 4305.
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension12h 22m 03.6s[1]
Declination12° 44′ 27″[1]
Redshift0.006298[1]
Helio radial velocity1888 km/s[1]
Distance98 Mly (30 Mpc)[1]
Apparent magnitude (V)13.4[1]
Characteristics
TypeSA(r)a[1]
Size~32,000 ly (9.7 kpc) (estimated)[1]
Apparent size (V)2.07 x 0.97[1]
Other designations
UGC 07432, VCC 0522, PGC 040030, MCG +02-32-013[1]

NGC 4305 exhibits well-defined, smooth spiral arms which terminate well outside its central bulge.[7] This spiral structure appears to have been induced by a tidal interaction with NGC 4306.[8][9] Such a tidal interaction would also explain its deficiency in neutral hydrogen gas (HI).[6]


References


  1. "NASA/IPAC Extragalactic Database". Results for NGC 4305. Retrieved 2019-08-01.
  2. Davidge, T. J. (2018-10-31). "The Stellar Contents of Intermediate Mass Disk Galaxies in the Virgo Cluster. I. GMOS Spectra". The Astronomical Journal. 156 (5): 233. arXiv:1811.00041. Bibcode:2018AJ....156..233D. doi:10.3847/1538-3881/aae5fa. S2CID 119391307.
  3. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2019-08-02.
  4. "New General Catalog Objects: NGC 4300 - 4349". cseligman.com. Retrieved 2019-08-02.
  5. Binggeli, B.; Sandage, A.; Tammann, G. A. (1985-09-01). "Studies of the Virgo Cluster. II - A catalog of 2096 galaxies in the Virgo Cluster area". The Astronomical Journal. 90: 1681–1759. Bibcode:1985AJ.....90.1681B. doi:10.1086/113874. ISSN 0004-6256.
  6. Sanchis, T.; Mamon, G. A.; Salvador-Sol´e, E.; Solanes, J. M. (2004-05-01). "The origin of H I-deficiency in galaxies on the outskirts of the Virgo cluster. II. Companions and uncertainties in distances and deficiencies". Astronomy and Astrophysics. 418: 393–411. arXiv:astro-ph/0401367. Bibcode:2004A&A...418..393S. doi:10.1051/0004-6361:20034158. ISSN 0004-6361.
  7. "NGC 4305 - SA(s)a". The De Vaucouleurs Atlas of Galaxies. Retrieved 2019-08-09.
  8. van den Bergh, Sidney; Pierce, Michael J.; Tully, R. Brent (1990-08-01). "Classification of galaxies on CCD frames". The Astrophysical Journal. 359: 4–14. Bibcode:1990ApJ...359....4V. doi:10.1086/169027. ISSN 0004-637X.
  9. Malin, D. (1994). "Interacting Galaxies in the Virgo Cluster". Astronomy from Wide-Field Imaging. 161: 567–576. Bibcode:1994IAUS..161..567M. doi:10.1007/978-94-011-1146-1_119. ISBN 978-0-7923-2879-7.


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На других языках

[de] NGC 4305

NGC 4305 ist eine Spiralgalaxie vom Hubble-Typ Sa im Sternbild Jungfrau nördlich der Ekliptik. Sie ist schätzungsweise 82 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 55.000 Lichtjahren. Zusammen mit NGC 4306 bildet sie das gravitativ gebundene Galaxienpaar Holm 381 oder KPG 333. Gemeinsam mit acht weiteren Galaxien ist sie Teil der NGC 4461-Gruppe (LGG 286) und unter der Katalognummer VCC 522 wird sie als Mitglied des Virgo-Galaxienhaufens aufgeführt.
- [en] NGC 4305

[ru] NGC 4305

NGC 4305 (другие обозначения — UGC 7432, MCG 2-32-13, ZWG 70.31, VCC 522, KCPG 333A, PGC 40030) — спиральная галактика (Sa) в созвездии Дева.


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