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The Impact of Star Formation Histories on Stellar Mass Estimation: Implications from the Local Group Dwarf Galaxies
Zhang, Hong-Xin1,2,3; Puzia, Thomas H.1; Weisz, Daniel R.4
2017-11-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume233Issue:1Pages:36
AbstractBuilding on the relatively accurate star formation histories (SFHs) and metallicity evolution of 40 Local Group (LG) dwarf galaxies derived from resolved color-magnitude diagram modeling, we carried out a comprehensive study of the influence of SFHs, metallicity evolution, and dust extinction on the UV-to-near-IR color-mass-to-light ratio (color-log (sic)(star)(lambda)) distributions and M-star estimation of local universe galaxies. We find that (1) the LG galaxies follow color-log (sic)(star) (lambda) relations that fall in between the ones calibrated by previous studies; (2) optical color-log (sic)(star)(lambda) relations at higher [M/H] are generally broader and steeper; (3) the SFH "concentration" does not significantly affect the color-log (sic)star(lambda) relations; (4) light-weighted ages < age >(lambda) and metallicities <[M H]>(lambda) together constrain log (sic)(star)(lambda) with uncertainties ranging from less than or similar to 0.1 dex for the near-IR up to 0.2 dex for the optical passbands; (5) metallicity evolution induces significant uncertainties to the optical but not near-IR(sic)(star)(lambda) at a given < age >(lambda) and <[M H]>(lambda); (6) the V band is the ideal luminance passband for estimating (sic)(star)(lambda) from single colors, because the combinations of (sic)(star)(V) and optical colors such as B - V and g - r exhibit the weakest systematic dependences on SFHs, metallicities, and dust extinction; and (7) without any prior assumption on SFHs, M-star is constrained with biases. less than or similar to 0.3 dex by the optical-to-near-IR SED fitting. Optical passbands alone constrain M-star with biases. less than or similar to 0.4 dex (or less than or similar to 0.6 dex) when dust extinction is fixed (or variable) in SED fitting. SED fitting with monometallic SFH models tends to underestimate M-star of real galaxies. M-star tends to be overestimated (or underestimated) at the youngest (or oldest) < age >(mass).
Keywordgalaxies: fundamental parameters galaxies: general galaxies: photometry galaxies: stellar content Local Group
Funding OrganizationFONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC) ; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC) ; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC) ; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC)
DOI10.3847/1538-4365/aa937b
WOS KeywordSPECTRAL ENERGY-DISTRIBUTIONS ; DIGITAL SKY SURVEY ; BROAD-BAND PHOTOMETRY ; LYMAN BREAK GALAXIES ; RESOLUTION GALACTIC SPECTRA ; HUBBLE-SPACE-TELESCOPE ; MAXIMUM A-POSTERIORI ; GIANT BRANCH STARS ; TO-LIGHT RATIOS ; TP-AGB MODELS
Language英语
Funding ProjectFONDECYT[3160538] ; FONDECYT[1161817] ; BASAL Center for Astrophysics and Associated Technologies[PFB-06] ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC)[11390373]
Funding OrganizationFONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC) ; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC) ; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC) ; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies ; Alfred P. Sloan Foundation ; Chinese Academy of Sciences through a CAS-CONICYT Postdoctoral Fellowship ; National Natural Science Foundation of China (NSFC)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000416011600004
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/35818
Collection中国科学院国家天文台
Corresponding AuthorZhang, Hong-Xin
Affiliation1.Pontificia Univ Catolica Chile, Inst Astrophys, Av Vicuna Mackenna 4860, Macul 7820436, Santiago, Chile
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.China Chile Joint Ctr Astron, Camino El Observ 1515, Las Condes, Santiago, Chile
4.Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Recommended Citation
GB/T 7714
Zhang, Hong-Xin,Puzia, Thomas H.,Weisz, Daniel R.. The Impact of Star Formation Histories on Stellar Mass Estimation: Implications from the Local Group Dwarf Galaxies[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2017,233(1):36.
APA Zhang, Hong-Xin,Puzia, Thomas H.,&Weisz, Daniel R..(2017).The Impact of Star Formation Histories on Stellar Mass Estimation: Implications from the Local Group Dwarf Galaxies.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,233(1),36.
MLA Zhang, Hong-Xin,et al."The Impact of Star Formation Histories on Stellar Mass Estimation: Implications from the Local Group Dwarf Galaxies".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 233.1(2017):36.
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