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HD 146501


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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:矩尺座
右阿森松:16h19m02.65s
赤纬:-49°24'22.9"
视星:7.289
距离:190.84 天文距离
右阿森松适当运动:10
赤纬适当运动:-5.7
B-T magnitude:7.322
V-T magnitude:7.292

目录:
适当名称   (Edit)
HD 1989HD 146501
TYCHO-2 2000TYC 8320-44-1
USNO-A2.0USNO-A2 0375-26982342
HIPHIP 79940

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