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MASS-TO-LIGHT VERSUS COLOR RELATIONS FOR DWARF IRREGULAR GALAXIES
Herrmann,Kimberly A.1; Hunter,Deidre A.2; Zhang,Hong-Xin3,4; Elmegreen,Bruce G.5
2016-11-22
Source PublicationThe Astronomical Journal
ISSN0004-6256
Volume152Issue:6
AbstractABSTRACT We have determined new relations between UBV colors and mass-to-light ratios (M/L) for dwarf irregular (dIrr) galaxies, as well as for transformed g′???r′. These M/L to color relations (MLCRs) are based on stellar mass density profiles determined for 34 LITTLE THINGS dwarfs from spectral energy distribution fitting to multi-wavelength surface photometry in passbands from the FUV to the NIR. These relations can be used to determine stellar masses in dIrr galaxies for situations where other determinations of stellar mass are not possible. Our MLCRs are shallower than comparable MLCRs in the literature determined for spiral galaxies. We divided our dwarf data into four metallicity bins and found indications of a steepening of the MLCR with increased oxygen abundance, perhaps due to more line blanketing occurring at higher metallicity.
Keywordgalaxies: dwarf galaxies: fundamental parameters galaxies: irregular galaxies: structure
DOI10.3847/0004-6256/152/6/177
Language英语
WOS IDIOP:0004-6256-152-6-177
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/36197
Collection中国科学院国家天文台
Affiliation1.Pennsylvania State University-Mont Alto, 1 Campus Drive, Mont Alto, PA 17237, USA; kah259@psu.edu
2.Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001, USA; dah@lowell.edu
3.Pontificia Universidad Católica de Chile, Avenida Libertador Bernardo O Higgins 340, Santiago, Región Metropolitana, Chile; hzhang@astro.puc.cl
4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
5.IBM T. J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, NY 10598, USA; bge@us.ibm.com
Recommended Citation
GB/T 7714
Herrmann,Kimberly A.,Hunter,Deidre A.,Zhang,Hong-Xin,et al. MASS-TO-LIGHT VERSUS COLOR RELATIONS FOR DWARF IRREGULAR GALAXIES[J]. The Astronomical Journal,2016,152(6).
APA Herrmann,Kimberly A.,Hunter,Deidre A.,Zhang,Hong-Xin,&Elmegreen,Bruce G..(2016).MASS-TO-LIGHT VERSUS COLOR RELATIONS FOR DWARF IRREGULAR GALAXIES.The Astronomical Journal,152(6).
MLA Herrmann,Kimberly A.,et al."MASS-TO-LIGHT VERSUS COLOR RELATIONS FOR DWARF IRREGULAR GALAXIES".The Astronomical Journal 152.6(2016).
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