Date

Speaker

Title

Aug 29

Neal Evans

University of Texas at Austin

Organizational meeting.

Sep 5

Samuel N. Quinn

Georgia State University

(host: Adam Kraus) "Hot Jupiters in Open Clusters and Binaries: Observational Constraints on Giant Planet Migration"

abstract

Sep 12

No regular ISM Seminar held today, to avoid conflict with the Quasars Symposium.

Sep 19

Speaker: TBD

Affiliation: TBA

Undergraduate Research Seminar.

Sep 26

Trent Dupuy

University of Texas at Austin

"A Stormy Forecast for the Evolution of Brown Dwarfs"

Oct 3

Yao-Lun Yang

University of Texas at Austin

"From Filaments to Class 0 Protostars"

Oct 10

IGRINS Minions: Hwihyun Kim & Kyle Kaplan

University of Texas at Austin

"Current Status of IGRINS and Preliminary Results from the First Science Run"

Oct 17

No talk scheduled, to avoid conflict with the Astronomy Faculty Meeting.

Oct 24

No talk scheduled. Dr. John Scalo's talk is postponed to 5 December.

Oct 31

Neal Evans

University of Texas at Austin

"Identifying the Legitimate Protostars"

Nov 7

Kevin Gullikson

University of Texas at Austin

"Hot Stars with Cool Companions"

Nov 14
2 PM

Daniel Foreman-Mackey

New York University

(Host: Mike Endl) "Inferring the Population of Exoplanets from Noisy, Incomplete Catalogs"

No true extrasolar Earth analog is known. Hundreds of planets have been found around Sun-like stars that are either Earth-sized but on shorter periods, or else on year-long orbits but somewhat larger. Under strong assumptions, exoplanet catalogs have been used to make an extrapolated estimate of the rate at which Sun-like stars host Earth analogs. These studies are complicated by the fact that every catalog is censored by non-trivial selection effects and detection efficiencies, and every property (period, radius, etc.) is measured noisily. We have developed a general probabilistic framework for making justified inferences about the population of exoplanets (for example, the joint period and radius distribution), taking into account survey completeness and, for the first time, observational uncertainties. In this talk, I'll derive our method, describe how it can be generalized to other problems, and present the results applied to the Petigura et al. (2013) catalog of small planets orbiting Sun-like stars.

close

Nov 21

1) Andrew Riddle
2) Michael Gully-Santiago

University of Texas at Austin

1) "Eclipsing Binary Masses from Archival Keck Data"
2) "Discovery and Characterization of Young Stellar Objects in Nearby Star-forming Regions"

Nov 28

Day after Thanksgiving Day: Staff Holiday. No classes being held.

Dec 5

John Scalo

University of Texas at Austin

"Breaking the Meter Barrier for Early Growth of Planetesimals in Disks"