Far-infrared Properties of Infrared-bright Dust-obscured Galaxies Selected with IRAS and AKARI Far-infrared All-sky Survey

被引：19

作者：

Toba, Yoshiki ^{[1
]}

Nagao, Tohru ^{[2
]}

Wang, Wei-Hao ^{[1
]}

Matsuhara, Hideo ^{[3
,4
]}

Akiyama, Masayuki ^{[5
]}

Goto, Tomotsugu ^{[6
,7
]}

Koyama, Yusei ^{[8
,9
]}

Ohyama, Youich ^{[1
]}

Yamamura, Issei ^{[3
,4
]}

机构：

[1] Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan

[2] Ehime Univ, Res Ctr Space & Cosm Evolut, Bunkyo Cho, Matsuyama, Ehime 7908577, Japan

[3] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan

[4] SOKENDAI, Dept Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan

[5] Tohoku Univ, Astron Inst, Aoba Ku, Sendai, Miyagi 9808578, Japan

[6] Natl Tsing Hua Univ, Inst Astron, 101,Sect 2,Kuang Fu Rd, Hsinchu 30013, Taiwan

[7] Natl Tsing Hua Univ, Dept Phys, 101,Sect 2,Kuang Fu Rd, Hsinchu 30013, Taiwan

[8] Subaru Telescope, 650 North Aohoku Pl, Hilo, HI 96720 USA

[9] Grad Univ Adv Studies SOKENDAI, Osawa 2-21-1, Mitaka, Tokyo 1818588, Japan

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 840卷 / 01期

基金：

美国安德鲁·梅隆基金会; 美国国家科学基金会; 美国国家航空航天局; 日本学术振兴会;

关键词：

catalogs; galaxies: active; galaxies: star formation; infrared: galaxies; STAR-FORMING GALAXIES; ACTIVE GALACTIC NUCLEI; LOW-REDSHIFT GALAXIES; EXTREMELY RED QUASARS; HYPER SUPRIME-CAM; FORMATION RATES; STELLAR MASSES; MAIN-SEQUENCE; DEEP SURVEY; XMM-NEWTON;

D O I：

10.3847/1538-4357/aa6d0a

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the star-forming activity of a sample of infrared (IR)-bright dust-obscured galaxies (DOGs) that show an extreme red color in the optical and IR regime, (i - [22])(AB) > 7.0. Combining an IR-bright DOG sample with the flux at 22 mu m. > 3.8 mJy discovered by Toba & Nagao with the IRAS faint source catalog version 2 and AKARI far-IR (FIR) all-sky survey bright source catalog version 2, we selected 109 DOGs with FIR data. For a subsample of seven IR-bright DOGs with spectroscopic redshifts (0.07 < z < 1.0) that were obtained from the literature, we estimated their IR luminosity, star formation rate (SFR), and stellar mass based on the spectral energy distribution fitting. We found that (1) the WISE 22 mu m luminosity at the observed frame is a good indicator of IR luminosity for IR-bright DOGs and (2) the contribution of the active galactic nucleus to IR luminosity increases with IR luminosity. By comparing the stellar mass and SFR relation for our DOG sample and the literature, we found that most of the IR-bright DOGs lie significantly above the main sequence of star-forming galaxies at similar redshift, indicating that the majority of IRAS-or AKARI-detected IR-bright DOGs are starburst galaxies.

引用

页数：10

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