2019RAA....19..112O

Query : 2019RAA....19..112O

2019RAA....19..112O - Research in Astron. and astroph., 19, 112-112 (2019/August-0)

EPIC 202843107: a close eclipsing binary containing a δ Scuti variable.

OU J.-W., YANG M. and ZHOU J.-L.

Abstract (from CDS):

This paper reports on the discovery that an eclipsing binary system, EPIC 202843107, has a δ Scuti variable component. The phased light curve from the Kepler space telescope presents a detached configuration. The binary modeling indicates that the two component stars have almost the same radius and may have experienced orbital circularization. Frequency analyses are performed for the residual light curve after subtracting the binary variations. The frequency spectrum reveals that one component star is a δ Scuti variable. A large frequency separation is cross-identified with the corresponding histogram, the Fourier transform and the echelle diagram method. The mean density of the δ Scuti component is estimated to be 0.09 g cm–3 based on the large separation and density relation. Systems like EPIC 202843107 are helpful to study the stellar evolution and physical state of binary stars.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing-stars: individual: EPIC 202843107 - stars: variables: d Scuti - stars: oscillations

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 UCAC2 20183405 EB* 16 22 11.468976 -28 09 42.56208   12.84 12.10 12.16   ~ 9 0

Query : 2019RAA....19..112O

Basic data :
UCAC2 20183405 -- Eclipsing Binary
Other object types: otypes_help 		** (), * (2016ApJS,UCAC2,...), MIR (WISEA,WISE), EB* (2019ApJS), NIR (2MASS)
ICRS coord. (ep=J2000) : 		16 22 11.468976 -28 09 42.56208 (Optical) [ 32 23 90 ] B 2012yCat.1322....0Z
FK4 coord. (ep=B1950 eq=1950) : 		16 19 05.319186 -28 02 41.54762 [ 32 23 90 ]
Gal coord. (ep=J2000) : 		349.504778501 +15.093566529 [ 32 23 90 ]
Proper motions mas/yr : 		-2.8 2.1 [1.5 1.1 90] C 2012yCat.1322....0Z
Fluxes (6) :
B 12.84 [0.01] E 2012yCat.1322....0Z
V 12.10 [0.01] E 2012yCat.1322....0Z
R 12.16 [0.10] E 2012yCat.1322....0Z
J 10.317 [0.027] C 2003yCat.2246....0C
H 10.044 [0.027] C 2003yCat.2246....0C
K 9.878 [0.023] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 3 		Display criteria :

Identifiers (7) :
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UCAC2 20183405 2MASS J16221147-2809426 UCAC4 310-089174 WISE J162211.47-280942.4
EPIC 202843107 TIC 392037308 WISEA J162211.46-280942.5

References (9 between 1850 and 2026) (Total 9)
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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UCAC2 20183405 2MASS J16221147-2809426 UCAC4 310-089174 WISEA J162211.46-280942.5 WISE J162211.47-280942.4

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