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Spectral classifications in the near infrared of stars with composite spectra. III. Study of a sample of 137 objects with the Aurelie spectrograph
We provide spectral classifications for a sample of 137 stars mentionedas having composite spectra. The classifications were carried out on 33Angstroms /mm spectra in the region 8370 - 8870 Angstroms. Of these 137objects, 115 correspond in the infrared to cool stars (G, K or M) ofluminosity classes III, II and I; for 22 stars, we find only hot spectraof types B, A, F or Am, so that they do not fulfil our definition ofcomposite spectra. We detect four new Am stars, and one Am star (HD70826) turns out to be a composite spectrum object. As in Paper II, thecool components of composite spectra show a strong concentration in thevicinity of G8III. Based upon observations carried out at Observatoirede Haute-Provence (OHP).
| Mesures d'etoiles doubles faites a Nice (5eme serie. Double star measurements made at Nice
We present the last observations from two lists: General program and MLRpairs, made with the 50~cm refractor of Nice Observatory.
| A survey of stars with composite spectra.
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Observation and Astrometry data
| Constellation: | Dragon |
| Right ascension: | 18h51m39.23s |
| Declination: | +51°15'50.7" |
| Apparent magnitude: | 9.373 |
| Proper motion RA: | 18.4 |
| Proper motion Dec: | 19.7 |
| B-T magnitude: | 9.863 |
| V-T magnitude: | 9.414 |
Catalogs and designations:
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