A large sample of low surface brightness disc galaxies from the SDSS - II. Metallicities in surface brightness bins

	A large sample of low surface brightness disc galaxies from the SDSS - II. Metallicities in surface brightness bins
	Liang, Y. C.1; Zhong, G. H.1,2; Hammer, F.3; Chen, X. Y.1,2; Liu, F. S.1,4; Gao, D.1,2; Hu, J. Y.1; Deng, L. C.1; Zhang, B.1,5
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2010-11-01
卷号	409 期号:1 页码:213-225
关键词	galaxies: abundances galaxies: evolution galaxies: ISM galaxies: spiral galaxies: starburst galaxies: stellar content
英文摘要	We study the spectroscopic properties of a large sample of low surface brightness galaxies (LSBGs) [with B-band central surface brightness mu(0)(B) > 22 mag arcsec(-2)] selected from the Sloan Digital Sky Survey Data Release 4 (SDSS-DR4) main galaxy sample. A large sample of disc-dominated high surface brightness galaxies [HSBGs, with mu(0)(B) < 22 mag arcsec(-2)] are also selected for comparison simultaneously. To study them in more details, these sample galaxies are further divided into four subgroups according to mu(0)(B) (in units of mag arcsec(-2)): very low surface brightness galaxies (vLSBGs) (24.5-22.75), intermediate low surface brightness galaxies (iLSBGs) (22.75-22.0), intermediate high surface brightness galaxies (iHSBGs) (22.0-21.25) and very high surface brightness galaxies (vHSBGs) (< 21.25). The diagnostic diagram from spectral emission-line ratios shows that the active galactic nucleus fractions of all the four subgroups are small (< 9 per cent). The 21 032 star-forming galaxies with good-quality spectroscopic observations are further selected for studying their dust extinction, strong-line ratios, metallicities and stellar mass-metallicity relations. The vLSBGs have lower extinction values and have less metal-rich and massive galaxies than the other subgroups. The oxygen abundances of our LSBGs are not as low as those of the H II regions in LSBGs studied in literature, which could be because our samples are more luminous, and because of the different metallicity calibrations used. We find a correlation between 12 + log(O/H) and mu(0)(B) for vLSBGs, iLSBGs and iHSBGs but show that this could be a result of correlation between mu(0)(B) and stellar mass and the well-known mass-metallicity relation. This large sample shows that LSBGs span a wide range in metallicity and stellar mass, and they lie nearly on the stellar mass versus metallicity and N/O versus O/H relations of normal galaxies. This suggests that LSBGs and HSBGs have not had dramatically different star formation and chemical enrichment histories.
收录类别	SCI
语种	英语
WOS记录号	WOS:000284285500020
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/7655]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Observ Paris, GEPI, F-92195 Meudon, France 4.Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Peoples R China 5.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China
推荐引用方式 GB/T 7714	Liang, Y. C.,Zhong, G. H.,Hammer, F.,et al. A large sample of low surface brightness disc galaxies from the SDSS - II. Metallicities in surface brightness bins[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,409(1):213-225.
APA	Liang, Y. C..,Zhong, G. H..,Hammer, F..,Chen, X. Y..,Liu, F. S..,...&Zhang, B..(2010).A large sample of low surface brightness disc galaxies from the SDSS - II. Metallicities in surface brightness bins.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,409(1),213-225.
MLA	Liang, Y. C.,et al."A large sample of low surface brightness disc galaxies from the SDSS - II. Metallicities in surface brightness bins".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 409.1(2010):213-225.