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Absolute parameters of the Algol binary V505 Sgr from infrared JK light curves |
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| Authors: | C Lázaro M J Arévalo E Antonopoulou |
| Institution: | Departamento de Astrofísica Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain;Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain;Department of Physics, Section Astrophysics, Astronomy and Mechanics, University of Athens, Panepistiopolis, GR 157 84 Zografos, Greece |
| Abstract: | We present the first light curves of V505 Sgr in the infrared (IR) J and K bands. The light curves are analysed with a code based on Roche geometry and stellar model atmosphere fluxes in order to determine a new set of stellar and orbital parameters. From the visual–IR photometry we find no evidence of IR excess in the system. We study the effect of the non-synchronous rotation of the primary star in the light and radial velocity curves. The distance of the system is estimated as 112 ± 4 pc , in close agreement with the Hipparcos parallax. |
| Keywords: | binaries: general stars: fundamental parameters stars: individual: V505 Sgr infrared: stars |