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HD 154769


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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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观测天体数据

星座:天蠍座
右阿森松:17h09m08.32s
赤纬:-37°54'46.0"
视星:9.032
右阿森松适当运动:12.5
赤纬适当运动:-70.6
B-T magnitude:9.523
V-T magnitude:9.073

目录:
适当名称   (Edit)
HD 1989HD 154769
TYCHO-2 2000TYC 7869-30-1
USNO-A2.0USNO-A2 0450-26583122
HIPHIP 83922

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