NOAO >   Observing Info >   Approved Programs >   2015A-0408

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Program Information for 2015A-0408


PI: John J Salzer, Indiana U., slaz@astro.indiana.edu
Address: Astronomy Department, 727 E. Third Street, Swain West 319, Bloomington, IN 47405 USA

CoI: Alec Hirschauer, Indiana U.

Title: Spectroscopy of Ultra-Low Metallicity Star-Forming Galaxies

Abstract: We propose to acquire spectroscopy of approximately two dozen dwarf star-forming galaxies discovered in the H$\alpha$ Dots survey (e.g., Kellar et al. 2012). The low-redshift H$\alpha$ Dots sample represents some of the lowest luminosity and lowest metallicity galaxies known in the local universe. The primary goal of this project is to explore the slope of the faint end of the luminosity-metallicity (L-Z) relation. Preliminary analysis using coarse abundances for the H$\alpha$ Dots suggests that the L-Z relation flattens at the lowest luminosities. We require more precise metallicity estimates in order to verify this result. These observations will constitute a significant portion of the PhD dissertation project of Alec Hirschauer.

Program Type: ITAC

Scheduled Nights:
Run 1 (2015A):  KP-4m/KOSMOS -- 4.5n on Apr 15 - Apr 19 2015


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 >   2015A-0408

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