2021PASP..133h4202L

Query : 2021PASP..133h4202L

2021PASP..133h4202L - Publ. Astron. Soc. Pac., 133, part no 8, 4202-84202 (2021/August-0)

Error analysis of the light curve solution of contact binaries based on the W-d code.

LIU L.

Abstract (from CDS):

We use the idea of repeat measurement to determine the mean value and error of light curve solution parameters of contact binaries. Our simulation is realized by the Monte Carlo algorithm and Wilson-Devinney code. This method can obtain systematic and random errors simultaneously. Within our 48 models, the systematic errors are smaller than the random errors in most cases. According to the numerical calculations, it is found that the relative errors of photometric mass ratios are less than 1% for totally eclipsing contact binaries, while they are generally between 10% and 20% for partly eclipsing ones. The effect of third light on the errors of the photometric solution is also investigated. With a third light, these errors are close to 10% for totally eclipsing contact binaries. Especially, it is better to set the third light to zero in flux if that light is very faint (e.g., less than 1% contribution in luminosity), because such faint third light will bring big errors to the light curve solutions.

Abstract Copyright: © 2021. The Astronomical Society of the Pacific. All rights reserved.

Journal keyword(s): Contact binary stars - Mass ratio - Solar and Stellar Astrophysics - Instrumentation and Methods for Astrophysics

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 : 2021PASP..133h4202L

Basic data :
V* V1309 Sco -- Cataclysmic Binary
Other object types: otypes_help 		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) :
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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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