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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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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Cetvel |
| Sað Açýklýk: | 16h19m02.65s |
| Yükselim: | -49°24'22.9" |
| Görünürdeki Parlaklýk: | 7.289 |
| Uzaklýk: | 190.84 parsek |
| özdevim Sað Açýklýk: | 10 |
| özdevim Yükselim: | -5.7 |
| B-T magnitude: | 7.322 |
| V-T magnitude: | 7.292 |
Kataloglar ve belirtme:
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