Photometric modelling of starspots - II. The fortran code spotpic

Details Photometric modelling of starspots - II. The fortran code spotpic Photometric modelling of starspots - II. The fortran code spotpic

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.314..489a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 314, Issue 3, pp. 489-497.

Astronomy and Astrophysics

Astronomy

5

Stars: Activity, Stars: Late-Type

Scientific paper

A fortran code which computes synthetic light and colour curves of active, spotted stars has been developed. The main feature of this code is that it can simultaneously model the V light curve and the (V-R)c, (V-I)c, (V-K) colour data. It also uses new effective temperature-colour and Barnes-Evans-like calibrations, temperature and gravity-dependent limb darkening coefficients and different effective surface gravities for the spotted and unspotted photosphere. The code allows for two-component spots, i.e. spots with umbral and penumbral components. Various problematic spot configurations were investigated and we conclude that, in order to be able to differentiate spots with various thermal structures (umbrae, penumbrae, faculae) or polar spots from equatorial bands, the modelling of the infrared colours, especially (V-I)c and (V-K), is needed.

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