SCUSS u-BAND EMISSION AS A STAR-FORMATION-RATE INDICATOR

	SCUSS u-BAND EMISSION AS A STAR-FORMATION-RATE INDICATOR
	Zhou, Zhimin1 ; Zhou, Xu1 ; Wu, Hong1 ; Fan, Xiao-Hui 2; Fan, Zhou1 ; Jiang, Zhao-Ji 1; Jing, Yi-Peng 3; Li, Cheng 4,5,6; Lesser, Michael 2; Jiang, Lin-Hua 7
刊名	ASTROPHYSICAL JOURNAL
	2017-01-20
卷号	835 期号:1
关键词	dust, extinction galaxies: ISM galaxies: star formation infrared: galaxies
英文摘要	We present and analyze the possibility of using optical u-band luminosities to estimate star-formation rates (SFRs) of galaxies based on the data from the South Galactic Cap u. band Sky Survey (SCUSS), which provides a deep u-band photometric survey covering about 5000 deg(2) of the South Galactic Cap. Based on two samples of normal star-forming galaxies selected by the. BPT diagram, we explore the correlations between u-band, H alpha, and IR luminosities by combing SCUSS data with the Sloan Digital Sky Survey and Wide-field Infrared Survey Explorer (WISE). The attenuation-corrected u-band luminosities are tightly correlated with the Balmer decrement-corrected Ha luminosities with an rms scatter of similar to 0.17 dex. The IR-corrected u luminosities are derived based on the correlations between the attenuation of u-band luminosities and WISE. 12 (or 22) mu m luminosities, and then calibrated with the Balmer-corrected Ha luminosities. The systematic residuals of these calibrations are tested against the physical properties over the ranges covered by our sample objects. We find that the best-fitting nonlinear relations are better than the linear ones and recommended to be applied in the measurement of SFRs. The systematic deviations mainly come from the pollution of old stellar population and the effect of dust extinction; therefore,. a. more detailed analysis is needed in future work.
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 ; ACTIVE GALACTIC NUCLEI ; FORMING GALAXIES ; NEARBY GALAXIES ; H-ALPHA ; INFRARED TRACERS ; LINE SPECTRA ; MU-M ; LUMINOSITIES ; CLASSIFICATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000393455400070
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8278]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA 3.Shanghai Jiao Tong Univ, Dept Phys & Astron, Ctr Astron & Astrophys, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 6.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 7.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Zhimin,Zhou, Xu,Wu, Hong,et al. SCUSS u-BAND EMISSION AS A STAR-FORMATION-RATE INDICATOR[J]. ASTROPHYSICAL JOURNAL,2017,835(1).
APA	Zhou, Zhimin.,Zhou, Xu.,Wu, Hong.,Fan, Xiao-Hui.,Fan, Zhou.,...&Zou, Hu.(2017).SCUSS u-BAND EMISSION AS A STAR-FORMATION-RATE INDICATOR.ASTROPHYSICAL JOURNAL,835(1).
MLA	Zhou, Zhimin,et al."SCUSS u-BAND EMISSION AS A STAR-FORMATION-RATE INDICATOR".ASTROPHYSICAL JOURNAL 835.1(2017).