2024JAVSO..52..194M

Query : 2024JAVSO..52..194M

2024JAVSO..52..194M - J. Am. Assoc. Variable star obs., 52, 194 (2024)

A Photometric Study of the Near-Contact Binary SY Botis.

MICHAELS E.J.

Abstract (from CDS):

In this paper the first multi-band photometric observations of the eclipsing binary SY Boo are presented. The beta Lyrae type light curves display continuously changing light, except at the bottom of the secondary eclipse, which is total. Photometric light curve solutions were obtained using the Wilson-Devinney program. The solution results describe a semidetached configuration with the cool K8 secondary star filling its Roche lobe. This is a near contact binary with the F0 primary star having a filling factor of over 99%. The mass ratio is M2/ M1 = 0.32 and the orbital inclination is near 90 degrees. A period analysis using 29 minima timings resulted in updated ephemerides and revealed an orbital period that is decreasing at a rate of 2.5 x 10^-7 d yr^-1.

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Journal keyword(s):

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed 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* SY Boo EB* 14 12 40.0326806856 +17 32 22.536382560           ~ 8 0

Query : 2024JAVSO..52..194M

Basic data :
V* SY Boo -- Eclipsing Binary
Other object types: otypes_help 		* (GSC,NSVS,...), V* (ASAS,V*), EB* (2022yCat), EB? (2018AJ), NIR (2MASS), Opt (ATO)
ICRS coord. (ep=J2000) : 		14 12 40.0326806856 +17 32 22.536382560 (Optical) [ 0.0134 0.0125 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 10 17.8194037756 +17 46 24.464459414 [ 0.0134 0.0125 90 ]
Gal coord. (ep=J2000) : 		010.0667504465521 +68.9525328901142 [ 0.0134 0.0125 90 ]
Proper motions mas/yr : 		-3.332 -5.022 [0.018 0.017 90] A 2020yCat.1350....0G
Parallaxes (mas): 		0.8653 [0.0171] A 2020yCat.1350....0G
Fluxes (4) :
G 12.372567 [0.010803] C 2020yCat.1350....0G
J 11.562 [0.021] C 2003yCat.2246....0C
H 11.41 [0.03] C 2003yCat.2246....0C
K 11.310 [0.026] C 2003yCat.2246....0C
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Identifiers (10) :
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SV* HV 3680 GSC 01471-00505 TIC 417179064 Gaia DR3 1233515883017093888
ASAS J141240+1732.4 2MASS J14124003+1732224 V* SY Boo
ATO J213.1667+17.5395 NSVS 10513199 Gaia DR2 1233515883017093888

References (8 between 1850 and 2026) (Total 8)
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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Collections of Measurements Description of Measurements

Distance : 2    Var : 3    Plx : 2    PM : 2   

   

External archives :

Link by name to the catalogue in VizieR :

GSC 01471-00505 2MASS J14124003+1732224 V* SY Boo Gaia DR2 1233515883017093888 Gaia DR3 1233515883017093888

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