NOAO >   Observing Info >   Approved Programs >   2014B-0105

Small NOAO Logo

Proposal Information for 2014B-0105


PI: Ricardo Salinas, Michigan State University, rsalinas@pa.msu.edu
Address: Department of Physics and Astronomy, 567 Wilson Road, East Lansing, MI 48824, USA

CoI: Tom Richtler, Universidad de Concepcion, Chile
CoI: Richard Lane, Universidad de Concepcion, Chile
CoI: Jay Strader, Michigan State University, USA

Title: The halos of isolated elliptical galaxies

Abstract: The current paradigm of galaxy formation states that galaxies go through a fast growth from z~2 due to minor mergers that deposit stars primordially into the galaxies halos. Galaxies in low-density environments would then experience a restrained phase of growth given their poor merger histories, with a clear signature in the shape of their outer luminosity profiles. We propose deep imaging of 6-8 isolated ellipticals using WIYN 0.9m/HDI that will provide surface brightness profiles down to (mu)_V~29-30. The shape of the luminosity profiles at these faint magnitudes provides a conceptually simple, but observationally challenging, test for the environmental influence of the halos growth.


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 >   2014B-0105

noaoprop-help@noao.edu

Small NOAO Logo