SIMBAD references

2024ApJS..271...32L - Astrophys. J., Suppl. Ser., 271, 32 (2024/March-0)

Physical Parameters of 11,100 Short-period ASAS-SN Eclipsing Contact Binaries.

LI X.-Z., ZHU Q.-F., DING X., XU X.-H., ZHENG H., QIU J.-S. and LIU M.-C.

Abstract (from CDS):

Starting from more than 11,200 short-period (less than 0.5 days) EW-type eclipsing binary candidates with the All-Sky Automated Survey for Supernovae V-band light curves, we use the Markov Chain Monte Carlo algorithm and neural networks to obtain the mass ratio (q), orbital inclination (incl), fill-out factor (f), and temperature ratio (Ts/Tp). After crossmatching with the Gaia DR3 database, the final sample contains parameters of 2399 A-type and 8712 W-type contact binaries (CBs). We present the distributions of parameters of these 11,111 short-period CBs. The mass ratio (q) and fill-out factor (f) are found to obey log-normal distributions, and the remaining parameters obey normal distributions. There is a significant period-temperature correlation of these CBs. Additionally, the temperature ratio (Ts/Tp) tends to increase as the orbital period decreases for W-type CBs. There is no significant correlation between them for A-type CBs. The mass ratio and fill-out factor (q-f) diagram suggest there is no significant correlation between these two parameters. A clear correlation exists between the mass ratio and radius ratio. The radius ratio increases with the mass ratio. Moreover, the deep fill-out CBs tend to fall on the upper boundary of the q-Rs/Rp distribution, while the shallow fill-out CBs fall on the lower boundary.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Contact binary stars - Eclipsing binary stars - Fundamental parameters of stars

VizieR on-line data: <Available at CDS (J/ApJS/271/32): table1.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 1

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