YNAO OpenIR  > 大样本恒星演化研究组
The star formation history of low-mass disk galaxies: A case study of NGC300
Kang XY(康晓宇)1,2,3; Zhang FH(张奉辉)1,2; Chang, Ruixiang4; Wang L(王浪)1,2,3; Cheng LT(程连涛)1,2,3
Source PublicationASTRONOMY & ASTROPHYSICS
2016
Volume585
DOI10.1051/0004-6361/201527041
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordGalaxies: Abundances Galaxies: Evolution Galaxies: Spiral Galaxies: Individual: Ngc 300
Abstract

Context. Since NGC300 is a bulgeless, isolated low-mass galaxy and it has not experienced radial migration during its evolution history, it can be treated as an ideal laboratory to test the simple galactic chemical evolution model. 

Aims. Our main aim is to investigate the main properties of the star formation history (SFH) of NGC-00 and compare its SFH with that of M33 to explore the common properties and differences between these two nearby low-mass systems. 

Methods. We construct a simple chemical evolution model for NGC-00, assuming its disk forms gradually from continuous accretion of primordial gas and including the gas-outflow process. The model allows us to build a bridge between the SFH and observed data of NGC-00, in particular, the present-day radial profiles and global observed properties (e. g., cold gas mass, star formation rate, and metallicity). By means of comparing the model predictions with the corresponding observations, we adopt the classical chi(2) methodology to find out the best combination of free parameters a, b, and b(out). 

Results. Our results show that by assuming an inside-out formation scenario and an appropriate outflow rate, our model reproduces well most of the present-day observational values. The model not only reproduces well the radial profiles, but also the global observational data for the NGC-00 disk. Our results suggest that NGC-00 may experience a rapid growth of its disk. Through comparing the best-fitting, model-predicted SFH of NGC-00 with that of M 33, we find that the mean stellar age of NGC-00 is older than that of M 33 and there is a recent lack of primordial gas infall onto the disk of NGC-00. Our results also imply that the local environment may play a key role in the secular evolution of galaxy disks.

Funding ProjectNational Natural Science Foundation of China (NSFC)[11403092] ; National Natural Science Foundation of China (NSFC)[11273053] ; National Natural Science Foundation of China (NSFC)[11033008] ; National Natural Science Foundation of China (NSFC)[11373063] ; National Natural Science Foundation of China (NSFC)[11573062] ; Yunnan Foundation[2011CI053] ; NSFC[11373053] ; NSFC[11390373] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences (CAS)[XDB09010100]
Funding OrganizationNational Natural Science Foundation of China (NSFC)[11403092, 11273053, 11033008, 11373063, 11573062] ; Yunnan Foundation[2011CI053] ; NSFC[11373053, 11390373] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences (CAS)[XDB09010100]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
Archive Date2016-12-01
WOS IDWOS:000369710300027
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordGALACTIC CHEMICAL EVOLUTION ; HUBBLE-SPACE-TELESCOPE ; FAR OUTER DISC ; MILKY-WAY DISK ; H-II REGIONS ; SPIRAL GALAXIES ; METALLICITY RELATION ; ABUNDANCE GRADIENTS ; NEARBY GALAXIES ; SCULPTOR GROUP
EI Accession Number20155101679626
EI KeywordsStars
EI Classification Number657.2Extraterrestrial Physics and Stellar Phenomena
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9338
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorKang XY(康晓宇)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China
3.University of Chinese Academy of Sciences, 100049 Beijing, PR China
4.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, 200030 Shanghai, PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Kang XY,Zhang FH,Chang, Ruixiang,et al. The star formation history of low-mass disk galaxies: A case study of NGC300[J]. ASTRONOMY & ASTROPHYSICS,2016,585.
APA Kang XY,Zhang FH,Chang, Ruixiang,Wang L,&Cheng LT.(2016).The star formation history of low-mass disk galaxies: A case study of NGC300.ASTRONOMY & ASTROPHYSICS,585.
MLA Kang XY,et al."The star formation history of low-mass disk galaxies: A case study of NGC300".ASTRONOMY & ASTROPHYSICS 585(2016).
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