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HD 82865


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Spectral Classification of Stars in A Supplement to the Bright Star Catalogue
MK spectral types are given for about 584 stars in A Supplement to theBright Star Catalogue. These are compared with Hipparcos parallaxes tocheck the reliability of those classifications. The estimated errors are+/-1.2 subtypes, and 10% of the luminosity classes may be wrong.

Four-colour and H-beta photometry of blue stars selected from a balloon-ultraviolet survey and other sources
New uvby and/or H-beta photometry is obtained at the Chiranhigh-altitude outstation for 105 stars. Certain of the program stars areselected from a comparison of the SCAP 2000 balloon-ultraviolet skysurvey of the Laboratoire d'Astronomie Spatiale with the correspondingblue and red prints of the Palomar Observatory sky survey. Only a smallportion of these stars turn out to be B stars, whereas, the rest of thestars, which are selected from a variety of other sources, are mostly Bstars and if of normal luminosity are in many cases many Population Iscale heights from the galactic plane. It is shown that theidentification of B stars is practicable only at a good observing siteand that if H-beta photometry is also obtained, sdOB, sdB, and hothorizontal branch B stars can be distinguished from normal stars bytheir position in the beta/c(0) diagram.

Four Southern Photoelectric Sequences
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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Aslan
Sað Açýklýk:09h34m59.69s
Yükselim:+12°39'16.2"
Görünürdeki Parlaklýk:6.81
Uzaklýk:192.678 parsek
özdevim Sað Açýklýk:-11.3
özdevim Yükselim:-23.3
B-T magnitude:6.766
V-T magnitude:6.807

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 82865
TYCHO-2 2000TYC 827-1317-1
USNO-A2.0USNO-A2 0975-06280682
HIPHIP 47022

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