| 词条 | NGC 1407 |
| 释义 |
| name = NGC 1407 | image = Color cutout hst 9427 02 acs wfc f814w f435w sci NGC 1407.jpg | image_size = 250px | caption = NGC 1407 by Hubble Space Telescope | credit = NASA/STScI/WikiSky | epoch = J2000 | type = E0 [1] | ra = {{RA|03|40|11.9}}[1] | dec = {{DEC|-18|34|48}}[1] | dist_ly = 76 Mly (23.3 Mpc)[1] | z = 1779 ± 9 km/s[1] | appmag_v = 9.7 | size_v = 4′.6 × 4′.3[1] | constellation name = Eridanus | notes = | names = ESO 548- G 067, PGC 13505[1] }}NGC 1407 is an elliptical galaxy in Eridanus. It is at a distance of 75 million light years from Earth. It is the brightest galaxy in the NGC 1407 Group, part of the Eridanus Group, with NGC 1407 being its brightest member.[2] NGC 1400, the second brightest of the group lies 11.8 arcmin away. NGC 1407 is X-ray luminous, with high hot gas Fe abundance,[3] and with evidence of recurrent radio outbursts.[4] In the central area of the galaxy are present old stars, with mean age 12.0 ± 1.1 Gyrs, that are metal rich and with supersolar abundances of α-elements. Observations indicate that NGC 1407 hasn't undergone recently strong star formation activity.[5] The galaxy hosts a supermassive black hole with mass 1.12 ±0.42 billion solar masses, based on velocity dispersion.[6] The galaxy was discovered by 6 October 1785 by William Herschel. References1. ^1 2 3 4 5 6 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 1407 | url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+1407 | accessdate=2016-01-18 }} 2. ^{{cite journal|last1=Su|first1=Yuanyuan|last2=Gu|first2=Liyi|last3=White III|first3=Raymond E.|last4=Irwin|first4=Jimmy|title=Joint XMM-Newton and Chandra observations of the NGC 1407/1400 complex: a tail of an early-type galaxy and a tale of a nearby merging group|journal=The Astrophysical Journal|date=10 May 2014|volume=786|issue=2|pages=152|doi=10.1088/0004-637X/786/2/152|arxiv = 1403.6416 |bibcode = 2014ApJ...786..152S }} 3. ^{{cite journal|last1=Su|first1=Yuanyuan|last2=Irwin|first2=Jimmy A.|title=Investigating the potential dilution of the metal content of hot gas in early-type galaxies by accreted cold gas|journal=The Astrophysical Journal|date=20 March 2013|volume=766|issue=1|pages=61|doi=10.1088/0004-637X/766/1/61|arxiv = 1301.7706 |bibcode = 2013ApJ...766...61S }} 4. ^{{cite journal|last1=Giacintucci|first1=Simona|last2=O’Sullivan|first2=Ewan|last3=Clarke|first3=Tracy E.|last4=Murgia|first4=Matteo|last5=Vrtilek|first5=Jan M.|last6=Venturi|first6=Tiziana|last7=David|first7=Laurence P.|last8=Raychaudhury|first8=Somak|last9=Athreya|first9=Ramana M.|title=Recurrent radio outbursts at the center of the NGC 1407 galaxy group|journal=The Astrophysical Journal|date=20 August 2012|volume=755|issue=2|pages=172|doi=10.1088/0004-637X/755/2/172|arxiv = 1206.5751 |bibcode = 2012ApJ...755..172G }} 5. ^{{cite journal|last1=Spolaor|first1=Max|last2=Forbes|first2=Duncan A.|last3=Proctor|first3=Robert N.|last4=Hau|first4=George K. T.|last5=Brough|first5=Sarah|title=The early-type galaxies NGC 1407 and NGC 1400 – II. Star formation and chemical evolutionary history|journal=Monthly Notices of the Royal Astronomical Society|date=April 2008|volume=385|issue=2|pages=675–686|doi=10.1111/j.1365-2966.2008.12892.x|arxiv = 0801.2005 |bibcode = 2008MNRAS.385..675S }} 6. ^{{cite journal|last1=Sadoun|first1=Raphael|last2=Colin|first2=Jacques|title=-σ relation between supermassive black holes and the velocity dispersion of globular cluster systems|journal=Monthly Notices of the Royal Astronomical Society: Letters|date=11 October 2012|volume=426|issue=1|pages=L51–L55|doi=10.1111/j.1745-3933.2012.01321.x|arxiv = 1204.0144 |bibcode = 2012MNRAS.426L..51S }} 4 : Eridanus Group|Eridanus (constellation)|Elliptical galaxies|NGC objects |
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