Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...372..588r&link_type=abstract
Astronomy and Astrophysics, v.372, p.588-593 (2001)
Astronomy and Astrophysics
Astrophysics
Stars: Binaries: Eclipsing, Stars: Individual: V2154 Cyg, Stars: Fundamental Parameters, Techniques: Photometric
Scientific paper
This paper presents complete uvby light curves for the recently discovered eclipsing binary system V2154 Cyg. Additional Crawford Hbeta data were also obtained. Three times of primary minima and two secondary minima are determined. An improved orbital period is found to be 2\fd6306312. A detailed photometric analysis is made using the EBOP code. This eclipsing binary is probably one of the components of a much wider double star, forming altogether a triple system. The results show that the eclipsing pair is a detached system with two late-type stars very different in size. Masses of about M_1=1.4 Msun and M_2=0.8 Msun are inferred for the components by using stellar evolution models. The total mass of the probable triple system is estimated to be of about 3.5 Msun, leading to a minimum orbital period of about 140 yr for the visual pair. Table 1 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr ( 130.79.128.5)} or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/372/588
Claret Antonio
García Jorge M.
Martín Samuel
Rodríguez Eduardo
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