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题名: HERSCHEL OBSERVATIONS OF MAJOR MERGER PAIRS AT z=0: DUST MASS AND STAR FORMATION
作者: Cao, Chen1, 2, 3; Xu, Cong Kevin3; Domingue, Donovan4; Buat, Veronique5, 6; Cheng, Yi-Wen7; Gao Yu(高煜)8; Huang, Jiasheng9; Jarrett, Thomas H.10; Lisenfeld, Ute11; Lu, Nanyao3; Mazzarella, Joe3; Sun, Wei-Hsin12, 13; Wu, Hong14; Yun, Min S.15; Ronca, Joseph4; Jacques, Allison4
刊名: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期: 2016-02-01
卷号: 222, 期号:2
关键词: galaxies: evolution ; galaxies: general ; galaxies: interactions ; galaxies: starburst
DOI: 10.3847/0067-0049/222/2/16
文章类型: Article
英文摘要: We present Herschel PACS and SPIRE far-infrared (FIR) and submillimeter imaging observations for a large K-band selected sample of 88 close major-merger pairs of galaxies (H-KPAIRs) in 6 photometric bands (70, 100, 160, 250, 350, and 500 mu m). Among 132 spiral galaxies in the 44 spiral-spiral (S+S) pairs and 44 spiral-elliptical (S+ E) pairs, 113 are detected in at least 1 Herschel band. The star formation rate (SFR) and dust mass (M-dust) are derived from the IR SED fitting. The mass of total gas (M-gas) is estimated by assuming a constant dust-to-gas mass ratio of 0.01. Star-forming spiral galaxies (SFGs) in S+ S pairs show significant enhancements in both specific star formation rate (sSFR) and star formation efficiency (SFE), while having nearly the same gas mass compared to control galaxies. On the other hand, for SFGs in S+ E pairs, there is no significant sSFR enhancement and the mean SFE enhancement is significantly lower than that of SFGs in S+ S pairs. This suggests an important role for the disk-disk collision in the interaction-induced star formation. The M-gas of SFGs in S+ E pairs is marginally lower than that of their counterparts in both S+ S pairs and the control sample. Paired galaxies with and without interaction signs do not differ significantly in their mean sSFR and SFE. As found in previous works, this much larger sample confirms that the primary and secondary spirals in S+S pairs follow a Holmberg effect correlation on sSFR.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: DIGITAL SKY SURVEY ; ULTRALUMINOUS INFRARED GALAXIES ; SPECTRAL ENERGY-DISTRIBUTIONS ; ACTIVE GALACTIC NUCLEI ; INTERACTING GALAXIES ; FORMATION RATES ; METALLICITY RELATION ; FORMING GALAXIES ; COSMIC EVOLUTION ; BINARY GALAXIES
收录类别: SCI
项目资助者: Spanish Ministerio de Economia y Competividad(AYA2011-24728 ; Junta de Andalucia (Spain) ; (NSFC-11503013) ; (NSFC-11420101002) ; (NSFC-10978014) ; (NSFC-11173059) ; (NSFC-11390373) ; (CAS-XDB09000000) ; AYA2014-53506-P)
语种: 英语
WOS记录号: WOS:000371304400002
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16164
Appears in Collections:星系中的恒星形成研究团组_期刊论文

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作者单位: 1.Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China
2.Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China
3.CALTECH, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA
4.Georgia Coll & State Univ, CBX 82, Milledgeville, GA 31061 USA
5.Univ Aix Marseille, LAM, 38 Rue F Joliot Curie, F-13388 Marseille 13, France
6.CNRS, UMR7326, 38 Rue F Joliot Curie, F-13388 Marseille 13, France
7.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan
8.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China
9.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
10.Univ Cape Town, Dept Astron, ZA-7701 Rondebosch, South Africa
11.Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain
12.Natl Taiwan Univ, Inst Astrophys, Taipei, Taiwan
13.Natl Museum Nat Sci, Taipei, Taiwan
14.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
15.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA
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