Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...265..535r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 265, no. 2, p. 535-546.
Astronomy and Astrophysics
Astrophysics
26
G Stars, Late Stars, M Stars, Stellar Temperature, Astronomical Models, Error Analysis, Light Curve, Lunar Eclipses, Stellar Color, Stellar Spectrophotometry
Scientific paper
We analyze and discuss lunar occultation lightcurves obtained at the 1.5 m TIRGO telescope. Angular diameters are reported for seven stars in the spectral range G8-M9; four stars are resolved for the first time. Effective temperatures of the sources are derived from the measured angular diameters, in conjunction with bolometric fluxes obtained by means of photometric measurements complemented by previously available data. We discuss in detail the error associated with the angular diameter values, and remove the bias introduced by atmospheric scintillation. The achieved accuracy, on averages less than 5 percent, makes the present results a valuable check for theoretical models. We also compare our diameters with previous occultation and infrared flux method results.
Calamai Giovanni
di Giacomo A.
Lisi Franco
Richichi Andrea
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