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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.

Finding list and spectral classifications for southern luminous stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976AJ.....81..225M&db_key=AST

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Dades d'Observació i Astrometria

Constel·lació:Scorpius
Ascensió Recta:17h53m12.48s
Declinació:-32°01'56.5"
Magnitud Aparent:6.796
Distancia:1075.269 parsecs
Moviment propi RA:0.6
Moviment propi Dec:-2.5
B-T magnitude:8.627
V-T magnitude:6.948

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 162585
TYCHO-2 2000TYC 7382-71-1
USNO-A2.0USNO-A2 0525-30226952
HIPHIP 87555
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