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Paper: Synthetic IR Photometry of Main Sequence Stars
Volume: 472, New Quests in Stellar Astrophysics III: A Panchromatic View of Solar-like Stars, With and Without Planets
Page: 31
Authors: Cruz Saenz de Miera, F.; Chavez, M.; Bertone, E.; Vega, O.
Abstract: We describe results on the calculation and comparison of synthetic photometry in 40 IR and sub-mm bands conducted using three different libraries of theoretical stellar spectra: MARCS, ATLAS9 and PHOENIX. Discrepancies of photometric magnitudes obtained with these libraries are less than 3% over the wavelength range 1-160μm. We use PHOENIX fluxes to construct an extensive grid of nearly 9000 points that cover the effective temperature interval 5000-7000 K (step of 200 K), surface gravity, log(g) = 3.5 to 5.0 (step of 0.5 dex), and [M/H] = -2.0 to +0.0 (step of 0.5 dex). We use PHOENIX theoretical fluxes and simple disk emission models to construct a series of diagnostic diagrams that allow a direct identification of an IR-submm excess and a preliminary determination of the properties of the material originating that excess. The grid is aimed at providing a handy access to photospheric fluxes for the analysis of IR excesses of solar like stars.
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