ULTRALUMINOUS INFRARED GALAXIES IN THE WISE AND SDSS SURVEYS

被引：8

作者：

Su, Shanshan ^{[1
,2
,3
]}

Kong, Xu ^{[1
,2
,3
]}

Li, Jinrong ^{[1
,2
]}

Fang, Guanwen ^{[4
,5
]}

机构：

[1] Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China

[2] Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China

[4] Dali Univ, Inst Astron & Hist Sci & Technol, Dali 671003, Yunnan, Peoples R China

[5] Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 778卷 / 01期

基金：

美国国家科学基金会; 中国国家自然科学基金; 美国国家航空航天局;

关键词：

galaxies: evolution; galaxies: starburst; galaxies: stellar content; infrared: galaxies; DIGITAL SKY SURVEY; STAR-FORMATION HISTORIES; ACTIVE GALACTIC NUCLEI; STELLAR POPULATIONS; SPECTRAL-SYNTHESIS; HOST GALAXIES; DATA RELEASE; IRAS SURVEY; EMISSION; FIELD;

D O I：

10.1088/0004-637X/778/1/10

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we present a large catalog of 419 Ultraluminous infrared galaxies (ULIRGs), carefully selected from the Wide-field Infrared Survey Explorer mid-infrared data and the Sloan Digital Sky Survey eighth data release, and classify them into three subsamples, based on their emission line properties: Hii-like ULIRGs, Seyfert 2 ULIRGs, and composite ULIRGs. We apply our new efficient spectral synthesis technique, which is based on mean field approach to Bayesian independent component analysis (MF-ICA) method, to the galaxy integrated spectra. We also analyze the stellar population properties, including percentage contribution, stellar age, and stellar mass, for these three types of ULIRGs, and explore the evolution among them. We find no significant difference between the properties of stellar populations in ULIRGs with or without active galactic nucleus components. Our results suggest that there is no evolutionary link among these three type ULIRGs.

引用

页数：10

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