| 词条 | NGC 2280 |
| 释义 |
| name = NGC 2280 | image = NGC 2280 (captured by EFOSC2).jpg | image_size = 250px | caption = NGC 2280 by the 3.6-metre telescope at ESO’s La Silla Observatory | credit = | epoch = J2000 | type = SA(s)cd [1] | ra = {{RA|06|44|49.1}}[1] | dec = {{DEC|-27|38|19}}[1] | dist_ly = 74.6 ± 16 Mly (22.9 ± 5.0 Mpc)[1] | z = 0.006334 +/- 0.000010 [1] | h_radial_v = 1899 ± 3 km/s[1] | appmag_v = 10.5 | size_v = 6′.3 × 3′.1[1] | constellation name = Canis Major | notes = | names = UGCA 131, ESO 427- G 002, AM 0642-273, MCG -05-16-020, PGC 19531[1] }}NGC 2280 is a spiral galaxy located in the constellation Canis Major. It is located at a distance of circa 75 million light years from Earth, which, given its apparent dimensions, means that NGC 2280 is about 135,000 light years across. It was discovered by John Herschel on February 1, 1835.[2] One supernova has been observed in NGC 2280, SN 2001fz, a type II supernova[3] discovered by the Beijing Astronomical Observatory Supernova Survey on November 15, 2001.[4] It had a peak magnitude of 17.4.[5] CharacteristicsNGC 2280 has a small bright nucleus. The spiral arms emanate from the bulge and are narrow and of high surface magnitude in the inner part of the disk. At the outer disk the arms become broader and of lower surface magnitude and appear to have more knots. The east arm can be traced through ∼540° while the west one fades after ∼360°.[6] The spiral pattern of the galaxy is undisturbed, with regular flow pattern and no evidence for a bar or oval distortion.[7] In the nucleus of NGC 2280 lies a supermassive black hole whose mass is estimated to be between 4 and 15 million {{solar mass|link=yes}} (106.88 ± 0.31 {{solar mass}}) by measuring the galaxy's pitch angle.[8] Nearby galaxiesNGC 2280 belongs to the NGC 2280 galaxy group, also known as LGG 138. Other members of the group are the possibly merging lenticular galaxies NGC 2292 and NGC 2293, NGC 2295, ESO 490−G010 and ESO 490−G045. Because of its large angular diameter, about one degree, the group was identified when redshift information were available, by Garcia et al. in 1993.[9] Although there are some smaller galaxies near NGC 2280 that based on redshift could be its companions, there are no significant indications of recent interactions or tidal distortions, like warps.[7] Gerard de Vaucouleurs had placed NGC 2280 in the same group with NGC 2139, NGC 2207, NGC 2217, and NGC 2223.[10] References1. ^1 2 3 4 5 6 7 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 2280 | url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+2280 | accessdate=2016-01-18 }} 2. ^{{cite web |last1=Seligman |first1=Courtney |title=NGC 2280 (= PGC 19531) |url=http://cseligman.com/text/atlas/ngc22a.htm#2280 |website=Celestial Atlas |accessdate=19 November 2018}} 3. ^{{cite web |title=Circular No. 7759 |url=http://www.cbat.eps.harvard.edu/iauc/07700/07759.html#Item2 |website=Central Bureau for Astronomical Telegrams |publisher=International Astronomical Union |date=21 November 2001}} 4. ^{{cite web |title=Circular No. 7753 |url=http://www.cbat.eps.harvard.edu/iauc/07700/07753.html#Item2 |website=Central Bureau for Astronomical Telegrams |publisher=International Astronomical Union |date=17 November 2001}} 5. ^List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015. 6. ^{{cite journal |last1=Eskridge |first1=Paul B. |last2=Frogel |first2=Jay A. |last3=Pogge |first3=Richard W. |last4=Quillen |first4=Alice C. |last5=Berlind |first5=Andreas A. |last6=Davies |first6=Roger L. |last7=DePoy |first7=D. L. |last8=Gilbert |first8=Karoline M. |last9=Houdashelt |first9=Mark L. |last10=Kuchinski |first10=Leslie E. |last11=Ramirez |first11=Solange V. |last12=Sellgren |first12=K. |last13=Stutz |first13=Amelia |last14=Terndrup |first14=Donald M. |last15=Tiede |first15=Glenn P. |title=Near‐Infrared and Optical Morphology of Spiral Galaxies |journal=The Astrophysical Journal Supplement Series |date=November 2002 |volume=143 |issue=1 |pages=73–111 |doi=10.1086/342340|bibcode=2002ApJS..143...73E |arxiv=astro-ph/0206320 }} 7. ^1 {{cite journal |last1=Mitchell |first1=Carl J. |last2=Williams |first2=T. B. |last3=Spekkens |first3=Kristine |last4=Lee-Waddell |first4=K. |last5=Naray |first5=Rachel Kuzio de |last6=Sellwood |first6=J. A. |title=The Rings Survey. I. Hα and H I Velocity Maps of Galaxy NGC 2280 |journal=The Astronomical Journal |date=2 March 2015 |volume=149 |issue=3 |pages=116 |doi=10.1088/0004-6256/149/3/116 |bibcode=2015AJ....149..116M|arxiv=1412.5444 }} 8. ^{{cite journal |last1=Davis |first1=Benjamin L. |last2=Berrier |first2=Joel C. |last3=Johns |first3=Lucas |last4=Shields |first4=Douglas W. |last5=Hartley |first5=Matthew T. |last6=Kennefick |first6=Daniel |last7=Kennefick |first7=Julia |last8=Seigar |first8=Marc S. |last9=Lacy |first9=Claud H. S. |title=The Black Hole Mass Function Derived from Local Spiral Galaxies |journal=The Astrophysical Journal |date=20 June 2014 |volume=789 |issue=2 |pages=124 |doi=10.1088/0004-637X/789/2/124|bibcode=2014ApJ...789..124D |arxiv=1405.5876 }} 9. ^{{cite journal |last1=Barnes |first1=D. G. |last2=Webster |first2=R. L. |title=A study of neutral hydrogen in five small galaxy groups |journal=Monthly Notices of the Royal Astronomical Society |date=July 2001 |volume=324 |issue=4 |pages=859–876 |doi=10.1046/j.1365-8711.2001.04273.x|bibcode=2001MNRAS.324..859B }} 10. ^{{cite book |last1=de Vaucouleurs |first1=G. |title=Galaxies and the Universe |date=1975 |publisher=University of Chicago Press |chapter-url=https://ned.ipac.caltech.edu/level5/Dev2/Dev_table4c.html |chapter=NEARBY GROUPS OF GALAXIES}} External links{{wikiSky}}{{Ngc25}} 6 : Unbarred spiral galaxies|Canis Major|NGC objects|UGCA objects|Principal Galaxies Catalogue objects|Astronomical objects discovered in 1835 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。