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IRAS F21013-0739: a possible evolutionary successor of an ultraluminous infrared galaxy
Meng, Xian-Min1,2; Wu, Hong1; Cao, Chen3
2011-04-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume11Issue:4Pages:419-433
AbstractWe present a stellar population synthesis study of a type II luminous infrared galaxy, IRAS F21013-0739. Optical images show clear characteristics of a merger remnant. The H-band absolute magnitude is M-H = -25.1, which is similar to 2 times as luminous as L* galaxies. Stellar populations are obtained through the stellar synthesis code STARLIGHT. We find that it experienced a recent starburst (SB) phase similar to 100 Myr ago. By reconstructing the ultraviolet-to-optical spectrum, and adopting Calzetti et al. and Leitherer et al.'s extinction curves, we estimate the past infrared (IR) luminosities of the host galaxy and find it may have experienced an ultraluminous infrared galaxy phase which lasted for about 100 Myr. Its i-band absolute magnitude is M-i = -22.463, and its spectral type shows type 2 active galactic nucleus (AGN) characteristics. The mass of the supermassive black-hole is estimated to be M-BH = 1.6 x 10(7) M-circle dot (lower-limit). The Eddington ratio L-bol/L-Edd is 0.15, which is typical of Palomar-Green (PG) quasars. Both the nuclear SB and AGN contribute to the present IR luminosity budget, and the SB contributes similar to 67%. On the diagram of IR color versus IR/optical excess, it is located between IR quasars and PG quasars. These results indicate that IRAS F21013-0739 has probably evolved from a ULIRG, and it can possibly evolve into an AGN.
KeywordInfrared: Galaxies Galaxies: Evolution Galaxies: Starburst Galaxies: Individual (Iras F21013-0739) Galaxies: Stellar Content
Indexed BySCI
Language英语
WOS IDWOS:000289611900005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8092
Collection光学天文研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
3.Shandong Univ, Weihai 264209, Peoples R China
Recommended Citation
GB/T 7714
Meng, Xian-Min,Wu, Hong,Cao, Chen. IRAS F21013-0739: a possible evolutionary successor of an ultraluminous infrared galaxy[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2011,11(4):419-433.
APA Meng, Xian-Min,Wu, Hong,&Cao, Chen.(2011).IRAS F21013-0739: a possible evolutionary successor of an ultraluminous infrared galaxy.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,11(4),419-433.
MLA Meng, Xian-Min,et al."IRAS F21013-0739: a possible evolutionary successor of an ultraluminous infrared galaxy".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 11.4(2011):419-433.
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