Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...719..240f&link_type=abstract
The Astrophysical Journal, Volume 719, Issue 1, pp. 240-263 (2010).
Astronomy and Astrophysics
Astronomy
2
Galaxies: Stellar Content, Stars: Fundamental Parameters, Stars: Late-Type
Scientific paper
A new synthetic library of spectral feature indices, Lick/Sloan Digital Sky Survey (SDSS), for stellar population studies is presented. Lick/SDSS is computed from synthetic spectra with resolving power R = 1800 to fully exploit the content of the spectroscopic SDSS-DR7 stellar database. The Lick/SDSS system is based on the Lick/IDS one complemented with a UV index in the wavelength region of Ca II H and K lines. The system is well suited to study α-element abundances in F, G, and K stars. The reliability of synthetic indices in reproducing the behaviors of observational ones with effective temperature, surface gravity, overall metallicity, and α-element abundances is tested by using empirical stellar libraries (ELODIE, INDO-U.S., and MILES) and the SDSS-DR7 spectroscopic database. The importance of using the same temperature scale in comparing theoretical and observational indices is discussed. The full consistency between Lick/SDSS and observational indices derived from the above mentioned stellar libraries is assessed. The comparison with indices computed from SDSS-DR7 spectra evidences good consistency for "dwarf" stars and significant disagreement for "giant" stars due to systematic overestimation of the stellar T eff by the SEGUE Stellar Parameter Pipeline.
Chavez Miguel
di Marcantonio Paolo
Franchini Marco
Malagnini Maria Lucia
Morossi Carlo
No associations
LandOfFree
The Lick/SDSS Library. I. Synthetic Index Definition and Calibration does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Lick/SDSS Library. I. Synthetic Index Definition and Calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Lick/SDSS Library. I. Synthetic Index Definition and Calibration will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1863123