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HD 12816


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The galactic reddening law - The evidence from uvby-beta photometry of B stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&A...142..189T&db_key=AST

Four-colour and H beta photometry of southern B stars at high galactic latitudes
Four-color and H beta photometry has been obtained for 105 early-type HDstars with galactic latitudes less than -45 deg. They are mostly late Bstars of luminosity class V to III. Two new Am stars and several Ap orBp stars are detected photometrically. Absolute magnitudes aredetermined from the photometry and from MK types where available. Theinterstellar reddening of many of the more distant stars is very small,suggesting either the existence of undetected peculiar stars in thesample or that there are areas of effectively zero reddening at highsouthern galactic latitudes.

New Bright Southern Variable Stars
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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Irmak
Sað Açýklýk:02h03m53.58s
Yükselim:-55°39'41.0"
Görünürdeki Parlaklýk:8.357
Uzaklýk:344.828 parsek
özdevim Sað Açýklýk:19.9
özdevim Yükselim:10.1
B-T magnitude:8.352
V-T magnitude:8.357

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 12816
TYCHO-2 2000TYC 8485-582-1
USNO-A2.0USNO-A2 0300-00625569
HIPHIP 9638
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