Date

Speaker

Title

Aug 27

No talk scheduled.

Sept 3

Steve Finkelstein

University of Texas at Austin

Organizational Meeting.

Sept 10

Rebecca Larson

University of Texas at Austin

"Using Herschel Far-Infrared Photometry to Constrain Star Formation Rates in CLASH Cluster Galaxies"

Sept 17

Sabrina Cales

Yale University

(host: Shardha Jogee) Title: TBA.

Sept 24

Xingxing Huang

Johns Hopkins University

"Extreme Strong Emission Line Galaxies at z ~ 1-2 and the Implications for High Redshift Galaxies" (host: Steve Finkelstein.)

abstract

Oct 1

Keely Finkelstein

University of Texas at Austin

"Probing the Physical Properties of High-Redshift Lyman-Alpha Emitters with Spitzer"

abstract

Oct 8

Speaker: TBD

Affiliation: TBD

No talk scheduled.

Oct 15

Greg Zeimann

University of Texas at Austin

"Why Dust Attenuation at High Redshift in Truly a NUISANCE Parameter."

abstract

Oct 22

Jimmy

UT Austin: Physics Dept.

"The Fundamental Metallicity Relation with Dwarf Irregular Galaxies"

We investigate the fundamental metallicity relation, an extension of the mass-metallicity relation which integrates a 3rd parameter. We utilize the ALFALFA survey of HI-gas rich galaxies as well a sample of IFU observed dwarf galaxies that allows us to study the fundamental metallicity relation down to lower stellar masses than previous studies. We study the fundamental metallicity relation as a function of both star formation rate and HI-gas mass. We bin the data by SFR/HI-gas mass and determine which parameter exhibits lower scatter in the binned means in order to determine which parameter (SFR or HI-gas mass) is more physically motivated as a driver of the fundamental metallicity relation. We find that both relationships exhibit lower scatter than the mass-metallicity relation alone, however HI-gas mass exhibits slightly lower scatter (0.01 dex) than SFR (0.02 dex). We also find that the HI-gas mass relation is consistent between the IFU observed dwarf galaxy sample and the ALFALFA galaxy sample. We conclude that HI-gas mass is better physically motivated as a driver of the fundamental metallicity relation.

close

Oct 29

(1) Matt Stevans
(2) Akim Yildirim

(1)University of Texas at Austin
(2)University of Heidelberg, Germany

(1) "The Hobby Eberly Telescope Dark Energy Experiment (HETDEX) and Galaxy Evolution"

(2) "Compact Elliptical Galaxies in the Local Universe"

Nov 5

Bev Wills

University of Texas at Austin

"Magnetic Field Alignment in Relativistic Jets of Active Galactic Nuclei"

Nov 12

John Kormendy

University of Texas at Austin

"Fritz Zwicky: Personal Recollections"

Nov 19

Andrew Leung

University of Texas at Austin

"Bayesian Redshift Classification of Emission-line Galaxies in HETDEX"

Nov 26

Thanksgiving Day Holiday. UT Closed. No talk scheduled.

Dec 3

Nancy Kawinwanichakij

Texas A&M University

"What do Satellite Galaxies tell us about their Dark Matter Halos and Galaxy Quenching?"

abstract