Ages of Solar Neighborhood Stars Using APOGEE

Hayden, M. R.; Majewski, S.; Frinchaboy, P. M.; Cunha, K. M.; Fabbian, D.; Beers, T. C.; Allende-Prieto, C.; Holtzman, J. A.; Girardi, L.; Feuillet, Diane
Referencia bibliográfica

American Astronomical Society, AAS Meeting #223, #152.09

Fecha de publicación:
1
2014
Número de autores
10
Número de autores del IAC
2
Número de citas
0
Número de citas referidas
0
Descripción
The SDSS-III Apache Point Observatory Galactic Evolution Experiment (APOGEE) is a high resolution (R ~23,000) near-IR (H-band) spectroscopic survey of 100,000 Milky Way stars designed to chemically trace the formation and evolution of Galactic stellar populations. In addition to the primary survey, the APOGEE spectrograph has been fitted with 10 fibers from the robotically controlled NMSU 1 m telescope to maximize the use of this instrument when not on sky with the Sloan 2.5 m telescope. This allows for single object observations with this high resolution NIR spectrograph. Using this new capability provided by the 1 m, we are conducting a survey of bright stars (H < 8) with accurate Hipparcos parallax measurements (μ_err < 10%), which are not accessible to the main APOGEE survey. These data can be reduced and analyzed in the same way as main survey data, resulting in detailed chemical information for hundreds of nearby stars. The atmospheric parameters combined with the Hipparcos distances allow for age estimates of these stars. We present initial age estimates from isochrone matching to Padova isochrones, and an age-metallicity relation for the current sample.