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HD 136474


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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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Osservazione e dati astrometrici

Costellazione:Triangolo Australe
Ascensione retta:15h24m52.89s
Declinazione:-66°59'48.3"
Magnitudine apparente:7.89
Distanza:10000000 parsec
Moto proprio RA:-2.6
Moto proprio Dec:-3.8
B-T magnitude:9.424
V-T magnitude:8.017

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 136474
TYCHO-2 2000TYC 9033-2790-1
USNO-A2.0USNO-A2 0225-22591000
HIPHIP 75453
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