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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We study the relative dust attenuation-inclination relation in 78,721 nearbygalaxies using the axis ratio dependence of optical-NIR colour, as measured bythe Sloan Digital Sky Survey (SDSS), the Two Micron All Sky Survey (2MASS), andthe Wide-field Infrared Survey Explorer (WISE). In order to avoid to thegreatest extent possible attenuation-driven biases, we carefully selectgalaxies using dust attenuation-independent near- and mid-IR luminosities andcolours. Relative u-band attenuation between face-on and edge-on disc galaxiesalong the star forming main sequence varies from ~0.55 mag up to ~1.55 mag. Thestrength of the relative attenuation varies strongly with both specific starformation rate and galaxy luminosity (or stellar mass). The dependence ofrelative attenuation on luminosity is not monotonic, but rather peaks at$M_{3.4\mu m} \approx -21.5$, corresponding to $M_* \approx 3\times10^{10}M_{Sun}$. This behavior stands seemingly in contrast to some olderstudies; we show that older works failed to reliably probe to higherluminosities, and were insensitive to the decrease in attenuation withincreasing luminosity for the brightest star-forming discs.Back-of-the-envelope scaling relations predict the strong variation of dustoptical depth with specific star formation rate and stellar mass. More in-depthcomparisons using the scaling relations to model the relative attenuationrequire the inclusion of star-dust geometry to reproduce the details of thesevariations (especially at high luminosities), highlighting the importance ofthese geometrical effects.

Global dust attenuation in disc galaxies: strong variation with specific star formation and stellar mass, and the importance of sample selection