The evolution and star-formation history of M33

	The evolution and star-formation history of M33
	Kang XY(康晓宇)1,2,3,4 ; Chang, RX 3; Yin, J 3; Hou, JL 3; Zhang FH(张奉辉)1,2 ; Zhang Y(张余)1,2,4 ; Han ZW(韩占文)1,2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2012-10
卷号	426 期号:2 页码:1455-1464
关键词	galaxies: abundances galaxies: evolution galaxies: individual: M33 galaxies: spiral
ISSN号	0035-8711
通讯作者	Kang, XY (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	We construct a parametrized model to explore the main properties of the star-formation history of M33. We assume that the disc originates and grows by primordial gas infall and adopt a simple form of gas accretion rate with one free parameter, the infall time-scale. We also include the contribution of the gas outflow process. A major update of the model is that we adopt a molecular-hydrogen-correlated star-formation law and calculate the evolution of the atomic and molecular gas separately. Comparisons between the model predictions and observational data show that the model predictions are very sensitive to the adopted infall time-scale, while the gas-outflow process mainly influences the metallicity profile. A model adopting a moderate outflow rate and an inside-out formation scenario can be in good agreement with most of the observed constraints of the M33 disc. We also compare model predictions based on a molecular-hydrogen-correlated star-formation law and that based on the Kennicutt star-formation law. Our results imply that the molecular-hydrogen-correlated star-formation law should be preferred to describe the evolution of the M33 disc, especially the radial distributions of both the cold gas and the stellar population.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	MASS-METALLICITY RELATION ; NEARBY SPIRAL GALAXIES ; MILKY-WAY DISK ; H-II REGIONS ; ABUNDANCE GRADIENTS ; CHEMICAL EVOLUTION ; PLANETARY-NEBULAE ; GALACTIC DISK ; STELLAR POPULATIONS ; IRREGULAR GALAXIES
收录类别	SCI
原文出处	http://mnras.oxfordjournals.org/content/426/2/1455
语种	英语
WOS记录号	WOS:000309456200052
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4521]
专题	云南天文台_大样本恒星演化研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming, 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, 650011, China 3.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China 4.Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China
推荐引用方式 GB/T 7714	Kang XY,Chang, RX,Yin, J,et al. The evolution and star-formation history of M33[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,426(2):1455-1464.
APA	Kang XY.,Chang, RX.,Yin, J.,Hou, JL.,Zhang FH.,...&Han ZW.(2012).The evolution and star-formation history of M33.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,426(2),1455-1464.
MLA	Kang XY,et al."The evolution and star-formation history of M33".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 426.2(2012):1455-1464.