Spectral classifications in the near infrared of stars with composite spectra
| Autor: | C. Jaschek, N. Ginestet, J. M. Carquillat |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Physics
Infrared Composite number Near-infrared spectroscopy General Physics and Astronomy Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Am star Spectral line Luminosity Stars Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Spectrograph Astrophysics::Galaxy Astrophysics |
| Zdroj: | Astronomy and Astrophysics Supplement Series. 134:473-482 |
| ISSN: | 1286-4846 0365-0138 |
| DOI: | 10.1051/aas:1999444 |
| Popis: | We provide spectral classifications for a sample of 137 stars mentioned as having composite spectra. The classifications were carried out on 33 A/mm spectra in the region A. 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. |
| Databáze: | OpenAIRE |
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