Spitzer Space Telescope - Directors Discretionary Time Proposal #485


The Spitzer Spectroscopic Stellar Atlas

Principal Investigator: David Ardila
           Institution: Spitzer Science Center

     Technical Contact: David Ardila, Spitzer Science Center

Co-Investigators:
Schuyler van Dyk, SSC
John Stauffer, SSC
Jeonghee Rho, SSC
Inseok Song, SSC
Stephanie Wachter, SSC
Sergio Fajardo-Acosta, SSC
Donald Hoard, SSC
Carl Grillmair, SSC
Mark Lacy, SSC

Science Category: stellar populations
 Observing Modes: IrsStaring
  Hours Approved: 29.2

Abstract:
We propose to compile a low-resolution stellar atlas, sampling all regions 
of the HR diagram. The goal of the atlas is to provide templates for models 
of galaxy evolution, as well as calibrators for future space missions. In
addition, the targets are intrinsically interesting: little is known about 
variation of spectral features with spectral or luminosity class. A search 
of the Spitzer archive reveals stellar classes that have been neglected in 
GO, GTO, or Legacy proposals. Such classes include hypergiants, supergiants, 
bright giants, giants, and high-mass dwarfs. This proposal seeks to obtain 
data that will complement that already in the Spitzer archive. The union 
of the two will provide a lasting Spitzer legacy.