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HD 3696


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Effective temperature scale and bolometric corrections from 2MASS photometry
We present a method to determine effective temperatures, angularsemi-diameters and bolometric corrections for population I and II FGKtype stars based on V and 2MASS IR photometry. Accurate calibration isaccomplished by using a sample of solar analogues, whose averagetemperature is assumed to be equal to the solar effective temperature of5777 K. By taking into account all possible sources of error we estimateassociated uncertainties to better than 1% in effective temperature andin the range 1.0-2.5% in angular semi-diameter for unreddened stars.Comparison of our new temperatures with other determinations extractedfrom the literature indicates, in general, remarkably good agreement.These results suggest that the effective temperaure scale of FGK starsis currently established with an accuracy better than 0.5%-1%. Theapplication of the method to a sample of 10 999 dwarfs in the Hipparcoscatalogue allows us to define temperature and bolometric correction (Kband) calibrations as a function of (V-K), [m/H] and log g. Bolometriccorrections in the V and K bands as a function of T_eff, [m/H] and log gare also given. We provide effective temperatures, angularsemi-diameters, radii and bolometric corrections in the V and K bandsfor the 10 999 FGK stars in our sample with the correspondinguncertainties.

Luminosity and velocity distribution of high-luminosity stars near the sun. II. The young disk giants
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973PASP...85..379E&db_key=AST

Formule corrective nouvelle pour déterminer à partir des estimations visuelles, la différence de magnitude des composantes d'étoiles doubles
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Second catalogue d'orbites d'Etoiles Doubles visuelles
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Dades d'Observació i Astrometria

Constel·lació:Sculptor
Ascensió Recta:00h39m28.08s
Declinació:-35°37'17.5"
Magnitud Aparent:10.1
Moviment propi RA:26.7
Moviment propi Dec:-15.4
B-T magnitude:10.553
V-T magnitude:10.138

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 3696
TYCHO-2 2000TYC 7000-597-1
USNO-A2.0USNO-A2 0525-00250470
HIPHIP 3100
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