2024ApJS..271...32L


Query : 2024ApJS..271...32L

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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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 V* V1309 Sco CV* 17 57 32.9368332984 -30 43 09.965039880           ~ 320 0

Query : 2024ApJS..271...32L

Basic data :
V* V1309 Sco -- Cataclysmic Binary
Other object types:
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V* (2008CBET,V*,...), * (2014AJ,[MLV2014],...), No* (2017ARep,NOVA), CV* (2018A&A), MIR (WISE)
ICRS coord. (ep=J2000) :
17 57 32.9368332984 -30 43 09.965039880 (Optical) [ 2.1401 1.7680 90 ] C 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) :
17 54 19.4584348590 -30 42 52.164713948 [ 2.1401 1.7680 90 ]
Gal coord. (ep=J2000) :
359.7854976254789 -03.1346539208166 [ 2.1401 1.7680 90 ]
Fluxes (2) :
G 19.417412 [0.026093] C 2020yCat.1350....0G
H 18.7 [0.3] D 2014AJ....147...11M
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Identifiers (7) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NOVA Sco 2008 WISE J175732.94-304309.8 [NNK2008b] J175732.94-304310.0 Gaia DR3 4044184503560991744
V* V1309 Sco [MLV2014] A Gaia DR2 4044184503560991744

References (320 between 1850 and 2026) (Total 320)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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V* V1309 Sco WISE J175732.94-304309.8 Gaia DR2 4044184503560991744 Gaia DR3 4044184503560991744

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