Active Research

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Simulating the Surfaces of Stars

Joel Tanner, Sarbani Basu, Pierre Demarque, Frank Robinson

Using 3D radiation hydrodynamic simulations, we model the surface layers of low-mass main sequence stars with the aim of improving stellar models. Traditional 1D models typically use the mixing length theory (MLT) to describe convection. Although MLT can adequately describe the gas dynamics in regions of efficient convective energy transport, it breaks down in regions of transition from convective to radiative energy transport, which occurs near the surface of stars with convective envelopes.

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Image Credits: (header) Image of prominence, SOHO (ESA & NASA)

News

09.18.2014 Planet Hunters v2.0 now online
A team, led by Professor Debra Fischer, has just released Planet Hunters v2.0, a new version of their previous successful “Zooniverse” site, which allows the public to assist in searching data from NASA’s Kepler spacecraft for potential planet candidates. Version 1 has already discovered a large number of planet candidates as well as confirmed several planets, with the assistance of nearly 300,000 volunteers from all around the world. The project continues with the aim to derive planet occurrence rates as a function of spectral type, and will include data from NASA’s second generation Kepler spacecraft, K2...
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09.11.2014 YCAA Postdoctoral Prize Fellowship Invites Applications
The Yale Center for Astronomy and Astrophysics invites applications for the YCAA Postdoctoral Prize Fellowship in Astronomy and Astrophysics, to be awarded to a young scientist of exceptional ability who will have received her/his Ph.D. by June 2014 in observational, theoretical, or experimental astronomy or astrophysics/cosmology. The Fellowship is for three years (renewed annually subject to performance), and offers competitive salary, benefits, and research funds. For more information, and to apply please see the Academic Jobs Online listing.
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08.27.2014 Yale scientists see the birth of a massive galaxy, hidden by dust
Graduate student Erica Nelson and her collaborators have discovered a window into the early, violent formation of the cores of the universe’s monster galaxies, obscured behind walls of dust, using the NASA/ESA Hubble Space Telescope and a telescope from the W.M. Keck Observatory in Hawaii. The discovery offers important clues about an early phase of galaxy development, from a time just 3 billion years after the Big Bang. The research appears in the journal Nature.
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Upcoming Events

Colloquia & Seminars | VIEW ALL

YCAA Seminars09.23.2014, 2:30 PM BASS 305
Seminar - Andrew Hearin
Yale University
TBD-9/23/14

Colloquia09.30.2014, 2:30 PM BASS 305
Colloquium - Naveen Reddy
UC Riverside
TBD-9/30/14

YCAA Seminars10.07.2014, 2:30 PM BASS 305
Seminar - Peter Behroozi
STScI
TBD-10/7/14

YCAA Seminars10.14.2014, 2:30 PM BASS 305
Seminar - Domink Riechers
Cornell
TBD-10/14/14

Public Events | VIEW ALL

The Leitner Family Observatory and Planetarium is open every Tuesday night for a planetarium show. Weather permitting there will also be public viewing of planets, nebulae, star clusters and whatever happens to be interesting in the sky. Seats are available on a first come first serve basis. No reservations necessary.
Current updates are posted under the Newsblog and Calendar sections at leitnerobservatory.org

Yale University

© 2014 Yale University. All Rights Reserved.

Yale University

© 2014 Yale University. All Rights Reserved.