MASS-TO-LIGHT VERSUS COLOR RELATIONS for DWARF IRREGULAR GALAXIES

Kimberly A. Herrmann, Deidre A. Hunter, Hong Xin Zhang, Bruce G. Elmegreen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Article number177
JournalAstronomical Journal
Volume152
Issue number6
DOIs
StatePublished - Dec 2016

Fingerprint

color
stellar mass
irregular galaxies
dwarf galaxies
metallicity
mass to light ratios
spiral galaxies
spectral energy distribution
photometry
indication
wavelength
oxygen
profiles
wavelengths
energy

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Herrmann, Kimberly A. ; Hunter, Deidre A. ; Zhang, Hong Xin ; Elmegreen, Bruce G. / MASS-TO-LIGHT VERSUS COLOR RELATIONS for DWARF IRREGULAR GALAXIES. In: Astronomical Journal. 2016 ; Vol. 152, No. 6.
@article{3122537a51624e0b9287c86d007d3870,
title = "MASS-TO-LIGHT VERSUS COLOR RELATIONS for DWARF IRREGULAR GALAXIES",
abstract = "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.",
author = "Herrmann, {Kimberly A.} and Hunter, {Deidre A.} and Zhang, {Hong Xin} and Elmegreen, {Bruce G.}",
year = "2016",
month = "12",
doi = "10.3847/0004-6256/152/6/177",
language = "English (US)",
volume = "152",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "6",

}

MASS-TO-LIGHT VERSUS COLOR RELATIONS for DWARF IRREGULAR GALAXIES. / Herrmann, Kimberly A.; Hunter, Deidre A.; Zhang, Hong Xin; Elmegreen, Bruce G.

In: Astronomical Journal, Vol. 152, No. 6, 177, 12.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - MASS-TO-LIGHT VERSUS COLOR RELATIONS for DWARF IRREGULAR GALAXIES

AU - Herrmann, Kimberly A.

AU - Hunter, Deidre A.

AU - Zhang, Hong Xin

AU - Elmegreen, Bruce G.

PY - 2016/12

Y1 - 2016/12

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85009083863&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85009083863&partnerID=8YFLogxK

U2 - 10.3847/0004-6256/152/6/177

DO - 10.3847/0004-6256/152/6/177

M3 - Article

AN - SCOPUS:85009083863

VL - 152

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 6

M1 - 177

ER -