Author ORCID Identifier
Document Type
Article
Publication Date
8-17-2020
Abstract
The color-stellar mass-to-light ratio relation (CMLR) is a widely accepted tool for estimating the stellar mass (M ∗) of a galaxy. However, an individual CMLR tends to give distinct M ∗ for a same galaxy when it is applied in different bands. Examining five representative CMLRs from the literature, we find that the difference in M ∗ predicted in different bands from optical to near-infrared by a CMLR is 0.1 ∼ 0.3 dex. Based on a sample of low surface brightness galaxies that covers a wide range of color and luminosity, we therefore recalibrated each original CMLR in r, i, z, J, H, and K bands to give internally self-consistent M ∗ for a same galaxy. The g-r is the primary color indicator in the recalibrated relations, which show little dependence on red (r-z) or near-infrared (J-K) colors. Additionally, the external discrepancies in the originally predicted γ ∗ by the five independent CMLRs have been greatly reduced after recalibration, especially in the near-infrared bands, implying that the near-infrared luminosities are more robust in predicting γ ∗. For each CMLR, the recalibrated relations provided in this work could produce internally self-consistent M ∗ from divergent photometric bands, and are extensions of the recalibrations from the Johnson-Cousin filter system by the pioneering work of McGaugh & Schombert to the filter system of the Sloan Digital Sky Survey.
Publication Title
Astronomical Journal
Grant
U1931109
Rights
© 2020. The Author(s). Published by the American Astronomical Society. This is an Open Access work distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Wei Du and Stacy S. McGaugh. Self-consistent Color-Stellar Mass-to-light Ratio Relations for Low Surface Brightness Galaxies. 2020 AJ 160 122
Manuscript Version
Final Publisher Version