2021AJ....162...59R

Query : 2021AJ....162...59R

2021AJ....162...59R - Astron. J., 162, 59-59 (2021/August-0)

MOA-2006-BLG-074: recognizing xallarap contaminants in planetary microlensing.

ROTA P., HIRAO Y., BOZZA V., ABE F., BARRY R., BENNETT D.P., BHATTACHARYA A., BOND I.A., DONACHIE M., FUKUI A., FUJII H., ISHITANI SILVA S., ITOW Y., KIRIKAWA R., KOSHIMOTO N., LI M.C.A., MATSUBARA Y., MIYAZAKI S., MURAKI Y., OLMSCHENK G., RANC C., SATOH Y., SUMI T., SUZUKI D., TRISTRAM P.J. and YONEHARA A.

Abstract (from CDS):

MOA-2006-BLG-074 was selected as one of the most promising planetary candidates in a retrospective analysis of the MOA collaboration: its asymmetric high-magnification peak can be perfectly explained by a source passing across a central caustic deformed by a small planet. However, after a detailed analysis of the residuals, we have realized that a single lens and a source orbiting with a faint companion provides a more satisfactory explanation for all the observed deviations from a Paczynski curve and the only physically acceptable interpretation. Indeed the orbital motion of the source is constrained enough to allow a very good characterization of the binary source from the microlensing light curve. The case of MOA-2006-BLG-074 suggests that the so-called xallarap effect must be taken seriously in any attempts to obtain accurate planetary demographics from microlensing surveys.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Gravitational microlensing exoplanet detection - Binary stars - Binary source microlensing - Xallarap effect

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 MOA 2006-BLG-74 * 18 05 27.341 -31 47 17.68           ~ 2 0

Query : 2021AJ....162...59R

Basic data :
MOA 2006-BLG-74 -- Star
Other object types: otypes_help 		* (), Lev (MOA)
ICRS coord. (ep=J2000) : 		18 05 27.341 -31 47 17.68 [ ] D 2021AJ....162...59R
FK4 coord. (ep=B1950 eq=1950) : 		18 02 12.148 -31 47 34.40 [ ]
Gal coord. (ep=J2000) : 		359.683553 -05.131467 [ ]
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Identifiers (1) :
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MOA 2006-BLG-74

References (2 between 1850 and 2026) (Total 2)
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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