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TYC 3552-978-1


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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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观测天体数据

星座:天龍座
右阿森松:18h51m39.23s
赤纬:+51°15'50.7"
视星:9.373
右阿森松适当运动:18.4
赤纬适当运动:19.7
B-T magnitude:9.863
V-T magnitude:9.414

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 3552-978-1
USNO-A2.0USNO-A2 1350-09978788
HIPHIP 92556

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