NOAO >   Observing Info >   Approved Programs >   2013A-0411

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Proposal Information for 2013A-0411


PI: David Nidever, University of Michigan, dnidever@umich.edu
Address: Astronomy Department, 830 Dennison, 500 Church St., Ann Arbor, MI 48109-1042, USA

CoI: Knut Olsen, NOAO Tucson
CoI: Gurtina Besla, Columbia Univ.
CoI: Abhijit Saha, NOAO Tucson
CoI: Ed Olszewski, University of Arizona
CoI: Carme Gallart, IAC
CoI: Matteo Monelli, IAC
CoI: Andrea Kunder, CTIO
CoI: Robert Gruendl, Univ. Illinois
CoI: You-Hua Chu, Univ. Illinois
CoI: Alistair Walker, CTIO
CoI: Dennis Zaritsky, University of Arizona
CoI: Nicolas Martin, MPIA
CoI: Guy Stringfellow, University of Colorado
CoI: Ricardo Munoz, University de Chile Santiago
CoI: Blair Conn, MPIA
CoI: Noelia Noel, MPIA
CoI: Robert Blum, NOAO
CoI: Steven Majewski, UVA
CoI: Roeland van der Marel, STSci
CoI: Lori Allen, NOAO
CoI: Ronald Probst, NOAO
CoI: Catherine Kaleida, ASU
CoI: Shoko Jin, University of Groningen
CoI: Roberto de Propris, CTIO
CoI: Hwihyun Kim, ASU
CoI: Maria-Rosa Cioni, University of Hertfordshire

Title: DECam Search for the Stellar Component of the Magellanic Leading Arm

Abstract: As two of our closest galactic neighbors, the Magellanic Clouds (MCs) have long been enticing targets for investigating galaxy formation and evolution, especially of interacting systems. The wide-field Dark Energy Camera (DECam) on the CTIO-4m will enable the next generation of large-scale and deep photometric surveys of the Magellanic Clouds. We aim to propose in 2013B for a community DECam survey of the Clouds covering hundreds of deg^2 to ~24th mag in multiple filters that will complement the Dark Energy Survey's partial coverage of the Magellanic periphery. Such a survey would make possible a number of important scientific inquiries. One of the most prominent features of the MCs is the Magellanic Stream and its Leading Arm. This 200^\circ-long gaseous feature has been studied for over three decades but its formation mechanism is still unclear. The detection of a stellar component of the Stream would provide conclusive evidence for a tidal origin of the Stream rather than models based on hydrodynamical processes. While previous searches failed to detect this elusive stellar debris deep, multi-band DECam observations should be sensitive enough to reveal it. We propose here a small component of the larger DECam MCs survey to map portions of the Magellanic Leading Arm and search for the stellar component of the Magellanic Stream.


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