NOAO >   Observing Info >   Approved Programs >   2015A-0071

# Program Information for 2015A-0071

PI: Vinicius Placco, Gemini Observatory, vplacco@nd.edu
Address: Northern Operations Center, 670 N. A'ohoku Place, Hilo, HI 96720 USA

CoI: Timothy Beers, U. of Notre Dame
CoI: Sean Points, CTIO
CoI: Catherine C Kaleida, CTIO
CoI: Young Sun Lee, Chungnam National University
CoI: Daniella Carollo, Macquarie U.
CoI: Verne V Smith, NOAO

Title: Identifying Bright CEMP Stars in the RAVE Catalog

Abstract: We propose to determine carbon abundance ratios, [C/Fe], for a sample of previously identified {\it bright} very metal-poor stars, by obtaining follow-up medium-resolution spectroscopy of candidates selected from the RAVE (RAdial Velocity Experiment) final data release. We have prepared a list of several hundred candidates, with 8 $< B <$ 12, and available at essentially all RAs in both hemispheres. We plan to use the KPNO~4m telescope to obtain spectra for the candidates in the DEC $>-$10$^{\rm o}$ range, and the SOAR telescope for the southern candidates. We hope to observe a combined sample of at least 250 metal- poor stars in 2015A. These medium-resolution spectra will be used to confirm the available atmospheric parameters from RAVE, as well as to determine [C/Fe] and [$\alpha$/Fe], using our spectroscopic analysis pipeline. This information will enable the identification of many new carbon-enhanced metal-poor (CEMP) stars, including representatives of the inner- and outer-halo populations, for which high-resolution spectroscopy can be carried out from the ground, and for the brightest stars (B $<$ 11), with HST STIS or COS.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2015A):  KP-4m/RCSP -- 4n on Jun 26 - Jun 29 2015
Run 2 (2015A):  SOAR/Goodman -- 4n on Mar 21 2015, Mar 29 2015, Jun 04 - Jun 05 2015, Jul 17 2015
Run 3 (2015A):  KP-4m/KOSMOS -- 3n on Feb 01 - Feb 02 2015, Mar 01 2015
Run 3 (2015B):  KP-4m/KOSMOS -- 2n on Dec 28 - Dec 29 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-0071