2025RNAAS...9..144K

Query : 2025RNAAS...9..144K

2025RNAAS...9..144K - Research Notes of the AAS, 9, 144 (2025/June-0)

Spurious Oscillatory Signal in Kepler Eclipsing Binary Light Curves.

KNOTE M.F., CABALLERO-NIEVES S.M. and PERLMAN E.S.

Abstract (from CDS):

In our study of the O'Connell effect in Kepler eclipsing binaries, we found that some systems display a spurious oscillatory signal in their long-cadence light curves. This signal occurred in 12% of our sample of 258 systems. The cause of this signal is a resonance between the binary's orbital period and Kepler's integration time. We found that binaries that have an orbital period that is close to (within ∼1%) an integer multiple or a simple fraction of the effective long-cadence integration time of 1765.5 s displayed an oscillatory signal. In this note, we highlight this phenomenon due to its potential impact on research using Kepler data, especially the study of pulsating variable stars.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Eclipsing binary stars - Astronomy data analysis - Light curves - Pulsating variable stars

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 ATO J292.1577+44.8734 EB* 19 28 37.8618069888 +44 52 24.353255352           ~ 24 0

Query : 2025RNAAS...9..144K

Basic data :
ATO J292.1577+44.8734 -- Eclipsing Binary
Other object types: otypes_help 		EB* (2011AJ), * (KIC,Gaia), EB? (2018AJ), NIR (2MASS), Opt (ATO)
ICRS coord. (ep=J2000) : 		19 28 37.8618069888 +44 52 24.353255352 (Optical) [ 0.0164 0.0173 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		19 27 05.6503019828 +44 46 09.787534115 [ 0.0164 0.0173 90 ]
Gal coord. (ep=J2000) : 		077.1337138221218 +12.6979037752865 [ 0.0164 0.0173 90 ]
Proper motions mas/yr : 		0.641 -5.758 [0.020 0.021 90] A 2020yCat.1350....0G
Parallaxes (mas): 		0.6145 [0.0189] A 2020yCat.1350....0G
Fluxes (6) :
G 14.913022 [0.009348] C 2020yCat.1350....0G
J 13.766 [0.026] C 2003yCat.2246....0C
H 13.445 [0.034] C 2003yCat.2246....0C
K 13.347 [0.039] C 2003yCat.2246....0C
g 15.375 [~] D 2020ApJS..249...18C
r 14.917 [~] D 2020ApJS..249...18C
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Identifiers (7) :
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2MASS J19283786+4452243 KIC 8690104 ZTF J192837.86+445224.2 Gaia DR2 2126586467444292736
ATO J292.1577+44.8734 TIC 63127268 Gaia DR3 2126586467444292736

References (24 between 1850 and 2026) (Total 24)
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 : 7    Fe/H : 1    Plx : 2    PM : 2   

   

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2MASS J19283786+4452243 KIC 8690104 Gaia DR3 2126586467444292736 Gaia DR2 2126586467444292736

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