Date

Speaker

Title

Aug 30

Neal Evans

University of Texas at Austin

Organizational meeting.

Sep 6

Joel Green

University of Texas at Austin

"Episodic Accretion in Young Stars"

abstract

Sep 13

Charles "Chat" Hull

University of California, Berkeley

"From Clouds to Cores to Envelopes to Disks: A Multi-scale View of Magnetized Star Formation" (host: Joel Green)

abstract

Sep 20

Mike Pavel

University of Texas at Austin

"Polarimetric Tomography of the Galactic Magnetic Field"

Sep 27

Adam Kraus, Joel Green, Michael Gully-Santiago, Neal Evans

University of Texas at Austin

"Highlights from the Protostars & Planets VI Conference (Heidelberg, Germany: 15-20 July 2013)"

Oct 4

Vanessa Bailey

University of Arizona

(host: Neal Evans) "Hole-y Debris Disks, Batman! (Giant planets sculpting disks and the technology we need to image them)"

abstract

Oct 11

No talk scheduled, to avoid conflict with the Bashfest 2013 Symposium (on 7-8 October).

Oct 18

Megan Reiter

University of Arizona

"Jets from Intermediate-mass Protostars as a Fossil Record of Accretion"

abstract

Oct 18

Johanna Teske

University of Arizona

"Diamonds in the Rough: A Cautionary Tale of C/O Ratios in Exoplanet Host Stars"

abstract

Oct 25

Yao-Lun Yang

University of Texas at Austin

"Molecular Hydrogen in the Diffuse Medium of the Large Magellanic Cloud"

Nov 1

"NRAO Community Day: NRAO Data Analysis Workshop (8 AM - 6 PM: POB 2.302 Avaya Auditorium)

Nov 8

Jeong-Eun Lee

Kyung Hee University, South Korea

"Detailed Analysis of DIGIT Embedded Protostars"

The Herschel Key program, "Dust, Ice, and Gas In Time (DIGIT, PI: Neal Evans)" carried out the observations of 30 embedded low mass protostars, covering wide ranges of bolometric luminosity and temperature, with PACS aboard the Herschel Space Observatory. Rich FIR molecular and atomic transitions have been detected toward the embedded protostars. Although interesting features have been isolated in specific individual sources, common features have been found; in rotation diagrams, CO has two temperature components (~300 K and ~1000 K) and the J=1/2 ladder of OH is more populated than the J=3/2 ladder. In this talk, some interesting observational results of individual sources will be presented, but mostly, we will focus on the detailed analyses with excitation diagrams, non-LTE LVG model, and the full 2-D line and continuum radiative transfer calculations to understand the heating mechanisms of these embedded sources.

close

Nov 15

Presentations by Manuel Merello and Emma Yu have been rescheduled to next week (22 November).

Nov 22

Manuel Merello

University of Texas at Austin

"Physical Characterization of Galactic Star-forming Clumps using (Sub)millimeter Continuum Surveys"

Nov 22

Emma Yu

University of Texas at Austin

"Probing the Protoplanetary Disks with ALMA - a CO Perspective"

Nov 29

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

Dec 6

Harriet Dinerstein

University of Texas at Austin

"Kappa Distributions: A Possible Solution to the Nebular Abundance Problem"

Dec 6

Amanda Turbyfill

University of Texas at Austin

"Application of Kappa Distributions to Planetary Nebulae Spectra"