000001936 001__ 1936
000001936 005__ 20160701171655.0
000001936 0247_ $$2DOI$$a10.1051/0004-6361:20021790
000001936 037__ $$aASTROimport-93
000001936 100__ $$aDecin, L.
000001936 245__ $$aISO-SWS calibration and the accurate modelling of cool-star atmospheres.  III. A0 to G2 stars
000001936 260__ $$c2003
000001936 520__ $$aVega, Sirius, beta Leo, alpha  Car and alpha  Cen A belong to a sample of twenty stellar sources used for the calibration of the detectors of the Short-Wavelength Spectrometer on board the Infrared Space Observatory (ISO-SWS). While general problems with the calibration and with the theoretical modelling of these stars are reported in {Decin} et al. (\cite{Decin2000b}), each of these stars is discussed individually in this paper. As demonstrated in {Decin} et al. (\cite{Decin2000b}), it is not possible to deduce the effective temperature, the gravity and the chemical composition from the ISO-SWS spectra of these stars. But since ISO-SWS is absolutely calibrated, the angular diameter (thetad ) of these stellar sources can be deduced from their ISO-SWS spectra, which consequently yields the stellar radius (R), the gravity-inferred mass (Mg) and the luminosity (L) for these stars.  For Vega, we obtained thetad = 3.35 +/- 0.20 mas, R = 2.79 +/- 0.17 Rsun, Mg = 2.54 +/- 1.21 Msun and L = 61 +/- 9 Lsun; for Sirius thetad = 6.17 +/- 0.38 mas, R = 1.75 +/- 0.11 Rsun, Mg = 2.22 +/- 1.06 Msun and L = 29 +/- 6 Lsun; for beta Leo thetad = 1.47 +/- 0.09 mas, R = 1.75 +/- 0.11 Rsun, Mg = 1.78 +/- 0.46 Msun and L = 15 +/- 2 Lsun; for alpha  Car thetad = 7.22 +/- 0.42 mas, R = 74.39 +/- 5.76 Rsun, Mg = 12.80+24.95-6.35 Msun and L = 14573 +/- 2268 Lsun and for alpha Cen A thetad = 8.80 +/- 0.51 mas, R = 1.27 +/- 0.08 Rsun, Mg = 1.35 +/- 0.22 Msun and L = 1.7 +/- 0.2 Lsun. These deduced parameters are confronted with other published values and the goodness-of-fit between observed ISO-SWS data and the corresponding synthetic spectrum is discussed. Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries France, Germany, The Netherlands and the UK) and with the participation of ISAS and NASA.}\fnmsep\thanks{Appendices A and B are only available in electronic form at http://www.edpsciences.org} 
000001936 700__ $$a Vandenbussche, B.
000001936 700__ $$a Waelkens, K.
000001936 700__ $$a Eriksson, C.
000001936 700__ $$a Gustafsson, B.
000001936 700__ $$a Plez, B.
000001936 700__ $$a Sauval, A. J.
000001936 773__ $$c695-707$$pAstronomy and Astrophysics$$v400$$y2003
000001936 85642 $$ahttp://esoads.eso.org/abs/2003A%26A...400..695D
000001936 905__ $$apublished in
000001936 980__ $$aREFERD