Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop..359g&link_type=abstract
NOAO Proposal ID #1999A-0359
Astronomy and Astrophysics
Astrophysics
Scientific paper
Optical stellar spectral libraries are important principally in three areas of astrophysical problems: stellar spectral classification, verification of theoretical stellar atmospheres, and spectral synthesis of stellar populations. There are several criteria a library must have to be useful for all of the above problems: precise flux calibration, a long wavelength baseline, high spectral resolution, high signal-to- noise, and complete coverage in stellar temperature, surface gravity, and metallicity. None of the spectral libraries currently in use meet all of these criteria. While most spectral libraries miss the mark in spectral resolution (20 - 50 Å), virtually all of them lack coverage in metallicity space, including the two (JHC) most widely used libraries, Jacoby, Hunter, & Christian (1984) and Silva & Cornell (1992). We have assembled a library, the Coude Feed Spectral Library, which meets all of the stated criteria except for the photometric precision, and now propose to complete the library by obtaining flux calibrations for each star. The final library would then be made publically available.
Bell David
Gulati Ravi K.
Gupta Ranjan
Jones Lewis
Singh Harinder P.
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