NOAO >   Observing Info >   Approved Programs >   2013A-0530

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Proposal Information for 2013A-0530


PI: Tracy Beck, Space Telescope Science Institute, tbeck@stsci.edu
Address: 3700 San Martin Drive, Baltimore, MD 21218, USA

CoI: Jeff Bary, Colgate University
CoI: Anne Dutrey, Laboratoire d'Astrophysique de Bordeaux
CoI: Stephane Guilloteau, Laboratoire d'Astrophysique de Bordeaux
CoI: Vincent Pietu, Institut de Radio-Astronomie Millimetrique (IRAM)
CoI: Michal Simon, State University of New York at Stony Brook
CoI: Steve Lubow, Space Telescope Science Institute
CoI: Emmanuel DiFolco, Laboratoire d'Astrophysique de Bordeaux

Title: Revealing the Structure of Gas Mass Accretion in "The Ringworld" - GG Tau A

Abstract: Studying planet formation in the context of multiple stellar systems is fundamental because most star systems form as multiples. However, there are only a few young binaries which allow detailed analysis of the dyamical and physical properties of their circumstellar and circumbinary material. Thanks to its distance (140pc), angular separation ( 0."25), brightness (K 7.8) and its optimal orientation, the GG Tau A T Tauri binary system is ideally suited to study the dynamical and physical links between inner and outer disks. GG Tau A has been resolved at optical through mm wavelengths to include a remarkable circumbinary ring of material encompassing the central binary. We are requesting 7.4 hours of Gemini IR spectroscopy with NIFS and GNIRS to study the warm gas (H2) associated with the central GG Tau A system. We will get a spectacular image of H2 which, when coupled with our approved ALMA and HST observations, will provide important constraints on the physical and dynamical properties of gas (hot and cool) and dust streaming towards the inner disks in this binary.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013A-0530

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