Movatterモバイル変換

[0]ホーム
URL:

Jump to content
WikipediaThe Free Encyclopedia
Search

NGC 2775

From Wikipedia, the free encyclopedia
Galaxy in the constellation Cancer
NGC 2775
NGC 2775 imaged by theHubble Space Telescope
Observation data (J2000epoch)
ConstellationCancer
Right ascension09h 10m 20.112s[1]
Declination+07° 02′ 16.53″[1]
Redshift1,316.4±13.4 km/s[2]
Distance67 Mly (20.5 Mpc)[3]
Apparent magnitude (V)10.4[4]
Characteristics
TypeSAa[5] or SA(r)ab[6]
Apparent size (V)4.3′ × 3.3′[6]
Other designations
UGC 4820,[7]PGC 25861,[8]Caldwell 48

NGC 2775, also known asCaldwell 48, is aspiral galaxy in theconstellationCancer. It is 67 millionlight-years (20.5megaparsecs)[3] away from theMilky Way. It was discovered byWilliam Herschel in 1783. NGC 2775 belongs to theAntlia-Hydra Cluster[9] of galaxies and is the most prominent member of the NGC 2775 Group, a smallgalaxy group in theVirgo Super-cluster, along with theLocal Group. Other members of the NGC 2775 Group includeNGC 2777 andUGC 4781.[10]

This object has amorphological classification of SA(r)ab,[6] which indicates anunbarred spiral galaxy (SA) with a prominent ring structure (r) andflocculent,[11] tightly woundspiral arms (ab).[12] The galaxy is inclined by an angle of 44° to theline of sight from theEarth.[6] The galactic nucleus is notactive[2] and the largenuclear bulge, which extends out to an angular radius of0.4′,[12] is relatively gas free.[11] An explanation for the latter could be a highsupernova rate.[6] Althoughstar formation is taking place in the dusty outer ring,[12] NGC 2775 does not display any currentstarburst activity,[13] and the galactic nucleus is virtually free of any star formation whatsoever.[11]

The galaxy's hydrogen tail feature indicates a past interaction with a faint companion.[6] Asatellite galaxy appears to have orbited NGC 2775 multiple times, losing mass as it does so and creating faint, shell-like structures.[12] Nearby irregular galaxy NGC 2777 displays a tidal tail of hydrogen gas that points back to NGC 2775, suggesting the two may be linked.[14]

One supernova has been observed in NGC 2775. SN 1993Z (type Ia, mag. 13.9) was discovered by theLeuschner Observatory Supernova Search (LOSS) on 23 September 1993.[15][16] By September 25, spectral analysis showed that it had peaked about four weeks earlier.[15]

Gallery

[edit]
  • NGC 2775 imaged with a 32-inch telescope.
    NGC 2775 imaged with a 32-inch telescope.
  • Map showing the location of NGC 2775.
    Map showing the location of NGC 2775.
  • NGC 2775 (SDSS DR14)
    NGC 2775 (SDSS DR14)
  • NGC 2775 from the Hubble Space Telescope
    NGC 2775 from theHubble Space Telescope

References

[edit]
  1. ^abSkrutskie, 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.
  2. ^abvan den Bosch, Remco C. E.; et al. (May 2015). "Hunting for Supermassive Black Holes in Nearby Galaxies With the Hobby-Eberly Telescope".The Astrophysical Journal Supplement Series.218 (1): 13.arXiv:1502.00632.Bibcode:2015ApJS..218...10V.doi:10.1088/0067-0049/218/1/10.S2CID 117876537. 10.
  3. ^abCappellari, Michele; et al. (May 2011)."The ATLAS3D project - I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria".Monthly Notices of the Royal Astronomical Society.413 (2):813–836.arXiv:1012.1551.Bibcode:2011MNRAS.413..813C.doi:10.1111/j.1365-2966.2010.18174.x.S2CID 15391206.
  4. ^Finlay, Warren H. (2014).Concise Catalog of Deep-sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Science & Business Media. p. 227.ISBN 978-3-319-03169-9.
  5. ^Ann, H. B.; et al. (2015). "A Catalog of Visually Classified Galaxies in the Local (z ~ 0.01) Universe".The Astrophysical Journal Supplement Series.217 (2):27–49.arXiv:1502.03545.Bibcode:2015ApJS..217...27A.doi:10.1088/0067-0049/217/2/27.S2CID 119253507.
  6. ^abcdefHogg, David E.; et al. (March 2001)."Hot and Cold Gas in Early-Type Spirals: NGC 3623, NGC 2775, and NGC 1291".The Astronomical Journal.121 (3):1336–1357.Bibcode:2001AJ....121.1336H.doi:10.1086/319400.
  7. ^"NGC 2775".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2020-04-19.
  8. ^"NASA/IPAC Extragalactic Database".Results for NGC 2775. Retrieved2010-03-24.
  9. ^O'Meara, Stephen James; Moore, Patrick (2002).The Caldwell objects (2nd ed.). Sky Publishing Corporation. p. 192.ISBN 0521827965.
  10. ^"A List of Nearby Galaxy Groups".Atlas of the Universe. Retrieved2010-11-28.
  11. ^abc"Hubble Spots Feathered Spiral".NASA. 2020-07-02. Retrieved2020-07-03.
  12. ^abcdKönig, Michael; Binnewies, Stefan (2017).The Cambridge Photographic Atlas of Galaxies. Cambridge University Press. p. 35.ISBN 978-1107189485.
  13. ^Shapiro, Kristen L.; et al. (December 2003). "Observational Constraints on Disk Heating as a Function of Hubble Type".The Astronomical Journal.126 (6):2707–2716.arXiv:astro-ph/0308489.Bibcode:2003AJ....126.2707S.doi:10.1086/379306.S2CID 15388910.
  14. ^Arp, Halton; Sulentic, Jack W. (July 1991). "The Properties of NGC 2777: Are Companion Galaxies Young?".Astrophysical Journal.375: 569.Bibcode:1991ApJ...375..569A.doi:10.1086/170218.
  15. ^abTreffers, R. R.; Filippenko, A. V.; Leibundgut, B.; Paik, Y.; Lee, L. F. M.; Richmond, M. W. (1993). "Supernova 1993Z in NGC 2775".International Astronomical Union Circular (5870): 3.Bibcode:1993IAUC.5870....3T.
  16. ^"SN 1993Z".Transient Name Server.IAU. Retrieved7 December 2024.

External links

[edit]
Wikimedia Commons has media related toNGC 2775.
NGC
PGC
UGC
Caldwell
List
See also
Stars
Bayer
Flamsteed
Variable
HD
Other
Exoplanets
Star clusters
Nebulae
Galaxies
NGC
Other
Galaxy clusters
Retrieved from "https://en.wikipedia.org/w/index.php?title=NGC_2775&oldid=1275896741"
Categories:
Hidden categories:
[8]ページ先頭
©2009-2025 Movatter.jp