Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size

Details Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size

2007-11-29

arxiv.org/abs/0711.4833v1

Astronomy and Astrophysics

Astrophysics

Accepted by ApJ Letters

Scientific paper

10.1086/527296

We use a sample of 43,690 galaxies selected from the Sloan Digital Sky Survey Data Release 4 to study the systematic effects of specific star formation rate (SSFR) and galaxy size (as measured by the half light radius, r_h) on the mass-metallicity relation. We find that galaxies with high SSFR or large r_h for their stellar mass have systematically lower gas phase-metallicities (by up to 0.2 dex) than galaxies with low SSFR or small r_h. We discuss possible origins for these dependencies, including galactic winds/outflows, abundance gradients, environment and star formation rate efficiencies.

Affiliated with

Also associated with

No associations

Rating

Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-702166