English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We combine Spitzer $3.6\mu$ observations of a sample of disk galaxiesspanning over 10 magnitudes in luminosity with optical luminosities and colorsto test population synthesis prescriptions for computing stellar mass. Manycommonly employed models fail to provide self-consistent results: the stellarmass estimated from the luminosity in one band can differ grossly from that ofanother band for the same galaxy. Independent models agree closely in theoptical ($V$-band), but diverge at longer wavelengths. This effect isparticularly pronounced in recent models with substantial contributions fromTP-AGB stars. We provide revised color--mass-to-light ratio relations thatyield self-consistent stellar masses when applied to real galaxies. The $B-V$color is a good indicator of the mass-to-light ratio. Some additionalinformation is provided by $V-I$, but neither it nor $J-K_s$ are particularlyuseful for constraining the mass-to-light ratio on their own. In thenear-infrared, the mass-to-light ratio depends weakly on color, with typicalvalues of $0.6\; \mathrm{M}_{\odot}/\mathrm{L}_{\odot}$ in the $K_s$-band and$0.47\; \mathrm{M}_{\odot}/\mathrm{L}_{\odot}$ at $3.6\mu$.

Color--Mass-to-Light Ratio Relations for Disk Galaxies