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HD 158503


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Distances, reddenings and distribution of emission B-stars in the galactic centre region /l/ not greater than 45 deg
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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.

The rapidly varying emission spectrum of HD 158503.
Abstract image available at:http://adsabs.harvard.edu/abs/1976PASP...88...37C

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Datos observacionales y astrométricos

Constelación:Altar
Ascensión Recta:17h33m11.35s
Declinación:-58°33'27.1"
Magnitud Aparente:7.012
Distancia:218.818 parsecs
Movimiento Propio en Ascensión Recta:3.8
Movimiento Propio en Declinación:10.5
B-T magnitude:7.21
V-T magnitude:7.029

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 158503
TYCHO-2 2000TYC 8740-384-1
USNO-A2.0USNO-A2 0300-31960300
HIPHIP 85895

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