Date

Speaker

Title

Aug 29

No meeting scheduled. Organizational meeting postponed to two weeks (12 September).

Sep 5

Rachael Livermore

University of Texas at Austin

"Galaxies Under the Cosmic Microscope"

abstract

Sep 12

No talk scheduled.

Sep 19

Neal Evans

University of Texas at Austin

"Highlights of the Ringberg Meeting on Regulation of Star Formation in Molecular Gas: From Galactic to sub-Cloud Scales"

Sep 26

Niv Drory

University of Texas at Austin

"The fourth-generation Sloan Digital Sky Survey 2014-2020: An overview and status report on SDSS-IV"

Oct 3

Eva Noyola

University of Texas at Austin

"Central Density Profiles for Concentrated Galactic Globular Clusters"

Oct 3

John Jardel

University of Texas at Austin

"Variations in a Universal Density Profile for Dwarf Spheroidals"

abstract

Oct 10

Rachel Bezanson

University of Arizona

"Tight Correlations between Massive Galaxy Structural Properties and Dynamics: The Mass Fundamental Plane was in Place by z ~ 2" (host: Shardha Jogee)

The Fundamental Plane (FP) is an empirical relation between the size, surface brightness, and velocity dispersion of early-type galaxies. This relation has been studied extensively for early-type galaxies in the local universe to constrain galaxy formation mechanisms. The evolution of the zeropoint of this plane has been extended to high redshifts to study the luminosity evolution of massive galaxies, under the assumption of structural homology. I will assess this assumption by replacing surface brightness with stellar mass density and present the evolution of the mass FP for massive, quiescent galaxies since z~2. By accounting for stellar populations, we thereby isolate and trace structural and dynamical evolution. Despite the observed dramatic evolution in the sizes and morphologies of massive galaxies since z~3, I will show that quiescent galaxies lie on the mass FP out to z~2. In contrast with ~1.4 dex evolution in the luminosity FP, average residuals from the z~0 mass FP are less than ~0.15 dex since z~2. Therefore, despite their compact sizes and suggestions that massive galaxies are more disk-like at z~2, the relationship between their dynamics and structural properties are consistent with local early-type galaxies.

Finally, I will discuss the tilt of the mass FP relative to the Virial plane.

close

Oct 17

Jason Jaacks

University of Texas at Austin

"Tracking Galaxies Through Cosmic Time Using Number Density Selection"

Oct 17

Matthew Stevans

University of Texas at Austin

"Ultraviolet Continua of AGNs"

Oct 24

Timothy Weinzirl

University of Texas at Austin

"Structure and Assembly of Massive Galaxies in the Center of the Coma Cluster"

Oct 24

Yi-Kuan Chiang

University of Texas at Austin

"A Large Sample of Candidate Galaxy Proto-clusters in the COSMOS/UltraVISTA Field"

abstract

Oct 31

Mimi Song

University of Texas at Austin

"Galaxy Stellar Mass Function at z = 6 & 7"

Oct 31

Taylor Chonis

University of Texas at Austin

"Probing Lyman-alpha Emitting Galaxies through their Resolved Lyman-alpha Emission"

abstract

Nov 7

Girish Kulkarni

MPIA, Heidelberg, Germany

"Direct Constraints on Population III Star Formation from Chemical Properties of DLAs" (host: Volker Bromm)

Nov 14

Greg Shields & Sarah Salviander

University of Texas at Austin

"The Black Hole Mass - Galaxy Luminosity Relationship for SDSS Quasars"

abstract

Nov 21

Ryan Trainor

California Institute of Technology

"Probing the Brightest QSOs though the Spatial Distribution of Galaxies and (Fluorescent) Lya Emitters" (host: Karl Gebhardt)

abstract

Nov 28

Thanksgiving Day: Staff Holiday. University Closed: No seminars or classes scheduled today.

Dec 5

Peter Behroozi

STScI

"What Can Galaxy Evolution Tell Us About Short Gamma-Ray Bursts?" (host: Shardha Jogee)

abstract

Dec 12

Joss Bland-Hawthorn

University of Sydney, Department of Physics

"A Front-row Seat on the Daily Life of a Supermassive Black Hole" (host: Gary Hill)

abstract