Near–Infrared Classification Spectroscopy: H–band Spectra of Fundamental MK Standards

Authors

Michael R. Meyer, University of Massachusetts Amherst
Suzan Edwards, Smith CollegeFollow
Kenneth H. Hinkle, Kitt Peak National
Stephen E. Strom, University of Massachusetts Amherst

Document Type

Article

Publication Date

11-20-1998

Publication Title

The Astrophysical Journal

Abstract

We present a catalog of H-band spectra for 85 stars of approximately solar abundance observed at a resolving power of 3000 with the KPNO Mayall 4 m Fourier Transform Spectrometer. The atlas covers spectral types O7M5 and luminosity classes IV as defined in the MK system. We identify both atomic and molecular indices and line ratios that are temperature and luminosity sensitive, allowing spectral classification to be carried out in the H-band. The line ratios permit spectral classification in the presence of continuum excess emission, which is commonly found in premain-sequence or evolved stars. We demonstrate that with spectra of R = 1000 obtained at signal-to-noise ratio >50, it is possible to derive spectral types within ±2 subclasses for late-type stars. These data are available electronically through the Astronomical Data Center in addition to being served on the World Wide Web.

Keywords

infrared: stars, stars: fundamental parameters, techniques: spectroscopic

Volume

508

First Page

397

Last Page

409

Rights

© 1998. The American Astronomical Society. All rights reserved.

Comments

Archived as publsihed.

Recommended Citation

Meyer, Michael R.; Edwards, Suzan; Hinkle, Kenneth H.; and Strom, Stephen E., "Near–Infrared Classification Spectroscopy: H–band Spectra of Fundamental MK Standards" (1998). Astronomy: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/ast_facpubs/15