NOAO >   Observing Info >   Approved Programs >   2016B-0207

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Program Information for 2016B-0207


PI: Erin Cox, U. of Illinois Urbana-Champaign, egcox2@illinois.edu
Address: Department of Astronomy, 103 Astronomy Building, 1002 West Green Street, Urbana, IL, 61801 USA

CoI: John Tobin, Leiden University
CoI: Leslie Looney, U. of Illinois Urbana-Champaign
CoI: Robert Harris, U. of Illinois Urbana-Champaign
CoI: Dominique Segura-Cox, U. of Illinois Urbana-Champaign

Title: Charcterizing the Youngest Multiplicity Systems in the Perseus Molecular Cloud

Abstract: We propose a high resolution multiplicity survey of a sample of Class 0 and Class I protostars in the close (d~230 pc) Perseus star formation region using NIRI L'-band imaging in order to examine binary frequency and separation at the earliest stages of star formation. Small number statistics of observed binary systems has so far made it difficult to connect observation with theory and simulations of multiple star systems. Binary systems are seen in higher fractions during the star formation phase than in later stages, suggesting that evolutionary effects are significant. Our team is currently investigating multiplicity statistics with a systematic millimeter/centimeter-wave VLA survey of all known Class 0/I sources in Perseus. Since we are mostly probing the continuum disk structures and free-free jet emission, both of which become weaker as the star(s) evolve, we anticipate our VLA sensitivity to potential Class I companions of both Class 0 and Class I objects to be less than that to their younger counterparts. The L'-band will detect emission from the inner disk and/or stellar photosphere and to their approximately co-eval companions. Deep L' imaging with Gemini is necessary to allow us to place sensitive limits on the presence of companions to our targets and to investigate any trend in multiplicity with age at the very earliest stages of protostellar evolution.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016B):  GEM-NQ/NIRI -- 12.5hrs band 3 (GN-2016B-Q-67)


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 >   2016B-0207

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