Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..38...31a&link_type=abstract
The Messenger, No. 38, P.31, 1984
Astronomy and Astrophysics
Astrophysics
3
Scientific paper
Near-infrared objective prism surveys at low dispersion (1 700 to 3400 Amm-1) using Schmidt telescopes have been extensively used to detect M-, S- and C-type stars in the galactic equatorial zone, and in other strategically selected regions of the Milky Way. The detection techniques have been perfected by Nassau and his associates (Nassau and Velghe, 1964, Astrophysical Journal 139, 190) during their survey, at Cleveland, of the northern part of the Milky Way. These techniques are based on the identification of a number of typical molecular bands (TiO, CN, LaO, Va) that fall in the 6800-8800 Aspectral range, and which are used to classify M-, S- and C-type stars (Mavridis, 1967, Coll. on Late Type Stars, p. 420). Using the same method, partial or entire nearinfrared surveys of the southern Milky Way have been carried out by Blanco and Münch (1955, Bol. Obs. Tonantzintla y Tacubaya 12, 273) at Tonantzintla, Smith and Smith (1956, Astronomical Journal 61, 273) at Bloemfontein, and later by Westerlund (1971, Astronomy and Astrophysics Suppl. 4, 51 ; 1978, ibid. 32, 401) with the Uppsala Schmidt telescope at Mount Stromlo Observatory.
Azzopardi Marc
Lequeux James
Rebeirot E.
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