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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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Osservazione e dati astrometrici

Costellazione:Regolo
Ascensione retta:16h19m02.65s
Declinazione:-49°24'22.9"
Magnitudine apparente:7.289
Distanza:190.84 parsec
Moto proprio RA:10
Moto proprio Dec:-5.7
B-T magnitude:7.322
V-T magnitude:7.292

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 146501
TYCHO-2 2000TYC 8320-44-1
USNO-A2.0USNO-A2 0375-26982342
HIPHIP 79940

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