Bibcode
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 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.