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TYC 7138-1918-1


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A Catalogue of Be-Stars
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Observations of southern emission-line stars
A catalog of 1929 stars showing H-alpha emission on photographic platesis presented which covers the entire southern sky south of declination-25 deg to a red limiting magnitude of about 11.0. The catalog providesprevious designations of known emission-line stars equatorial (1900) andgalactic coordinates, visual and photographic magnitudes, H-alphaemission parameters, spectral types, and notes on unusual spectralfeatures. The objects listed include 16 M stars, 25 S stars, 37 carbonstars, 20 symbiotic stars, 40 confirmed or suspected T Tauri stars, 16novae, 14 planetary nebulae, 11 P Cygni stars, 9 Bep stars, 87 confirmedor suspected Wolf-Rayet stars, and 26 'peculiar' stars. Two new Tassociations are discovered, one in Lupus and one in Chamaeleon. Objectswith variations in continuum or H-alpha intensity are noted, and thedistribution by spectral type is analyzed. It is found that the skydistribution of these emission-line stars shows significantconcentrations in the region of the small Sagittarius cloud and in theCarina region.

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Osservazione e dati astrometrici

Costellazione:Bussola
Ascensione retta:08h56m48.25s
Declinazione:-30°11'01.9"
Magnitudine apparente:9.252
Moto proprio RA:1.8
Moto proprio Dec:4.2
B-T magnitude:9.437
V-T magnitude:9.268

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 7138-1918-1
USNO-A2.0USNO-A2 0525-10526535
HIPHIP 43918

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