Free Access
Issue
Astron. Astrophys. Suppl. Ser.
Volume 134, Number 3, February I 1999
Page(s) 473 - 482
DOI https://doi.org/10.1051/aas:1999444
Published online 15 February 1999
DOI: 10.1051/aas:1999444

Astron. Astrophys. Suppl. Ser. 134, 473-482

Spectral classifications in the near infrared of stars with composite spectra

III. Study of a sample of 137 objects with the Aurelie spectrograph[*]

N. Ginestet1 - J.M. Carquillat1 - C. Jaschek2

Send offprint request: J.M. Carquillat
e-mail: Carquila@obs-mip.fr


1 - Observatoire Midi-Pyrénées, UMR 5572 (CNRS), 14 avenue Edouard Belin, 31400 Toulouse, France
2 - Observatoire de Strasbourg, URA 1280 (CNRS), 11 rue de l'Université, 67000 Strasbourg, France

Received May 15; accepted July 3, 1998

Abstract:

We provide spectral classifications for a sample of 137 stars mentioned as having composite spectra. The classifications were carried out on 33 Å/mm spectra in the region $8370\, {-}\, 8870$ Å. Of these 137 objects, 115 correspond in the infrared to cool stars (G, K or M) of luminosity classes III, II and I; for 22 stars, we find only hot spectra of types B, A, F or Am, so that they do not fulfil our definition of composite spectra. We detect four new Am stars, and one Am star (HD 70826) turns out to be a composite spectrum object.

As in Paper II, the cool components of composite spectra show a strong concentration in the vicinity of G8III.

Key words: stars: fundamental parameters -- stars: infrared -- binaries: spectroscopic

SIMBAD Objects

Copyright The European Southern Observatory (ESO)

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.