Τίτλος:
V 700 Cygni and AW Virginis: Two W-type W UMa systems with spotted
components
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
A photometric analysis of the W UMa systems V 700 Cyg and AW Vir, based
on photoelectric B and V light curves, is presented. Since no
spectroscopic mass-ratio is available, the q-search method was applied
to find the preliminary range of the mass-ratio in order to search for
the final solution. First, an unspotted solution was carried out by
using the unperturbed parts of the light curves and applying the DC
program of the WD code. The final spotted solution was made by adopting
spot models for the two systems. In the case of V 700 Cyg, two cool
spots were placed on the primary (more massive, larger and cooler)
component to explain the O’Connell effect (MaxII fainter than Maxi) and
a small deficit of light just before MaxI. In the case of AW Vir, one
cool spot was placed on the primary component to explain the relatively
large O’Connell effect. Both objects are W-type systems with partial
eclipses; V 700 Cyg is fairly evolved while AW Vir is rather unevolved.
Συγγραφείς:
Niarchos, PG
Hoffmann, M
Duerbeck, HW
Περιοδικό:
Astronomy and Astrophysics. Supplement Series
Εκδότης:
EDITIONS PHYSIQUE
Λέξεις-κλειδιά:
stars, V700 Cyg, AW Vir; binaries, eclipsing; starspots
