HD 83609

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Photometry of F-K type bright giants and supergiants. I - Intermediate band and H-Beta observations
Over 1500 observations of 560 bright giants and supergiants of types F-Kare presented and compared to the observations by Gray and Olsen (1991).The present results include intermediate-band which is slightlydifferent from the Stromgren data by Gray and Olsen due to a differentwidth for the v filter. A systematic difference in m(1) - M(1) withdecreasing temperature is noted in the two H-Beta data sets, and thecorrelations are defined.

The calibration of the Stromgren photometric system for A, F and early G supergiants. I - The observational data
An empirical calibration of the Stromgren uvby-beta photometric systemfor the A, F, and early G supergiants is being derived. This paperexplains the observational program and the photometric reductiontechniques used and presents a catalog of new Stromgren photometry forover 600 A, F, and G supergiants.

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Observation and Astrometry data

Constellation:	Antlia
Right ascension:	09^h38^m48.23^s
Declination:	-36Â°31'45.4"
Apparent magnitude:	7.997
Distance:	746.269 parsecs
Proper motion RA:	-9.2
Proper motion Dec:	3.1
B-T magnitude:	9.057
V-T magnitude:	8.085

Catalogs and designations:

Proper Names	(Edit)
HD 1989	HD 83609
TYCHO-2 2000	TYC 7179-2685-1
USNO-A2.0	USNO-A2 0525-12033432
HIP	HIP 47339

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HD 83609

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Member of following groups:

Observation and Astrometry data