2025AJ....170..141S

Query : 2025AJ....170..141S

2025AJ....170..141S - Astron. J., 170, 141 (2025/September-0)

Investigating the Binary Source Degeneracy for Wide-orbit Planets.

SANGTARASH P. and YEE J.C.

Abstract (from CDS):

Wide-orbit planets are particularly sensitive to detection by the Roman Galactic Bulge Time Domain Survey (GBTDS). This study investigates the degeneracy of these events with binary sources, focusing on how observation cadence affects the resolution of these degeneracies. We analyzed the impact of various cadences from ${(3.6\,{\mathrm{minutes}})}^{-1}$ to (5 hr)–1, which encompasses planned cadences for both the GBTDS and cadences used by ground-based surveys like KMTNet. The results show that a $\sim {(15\,{\mathrm{minutes}})}^{-1}$ cadence is generally sufficient to resolve this degeneracy unless the source star is a giant (ρ ≳ 0.01).

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

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

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

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 NAME OGLE-2016-BLG-0007b Pl? 17 53 25.45 -29 38 32.1           ~ 3 0

Query : 2025AJ....170..141S

Basic data :
NAME OGLE-2016-BLG-0007b -- Extra-solar Planet Candidate
Other object types: otypes_help 		Pl? (2025PASP)
ICRS coord. (ep=J2000) : 		17 53 25.45 -29 38 32.1 [ ] D EWS
FK4 coord. (ep=B1950 eq=1950) : 		17 50 13.67 -29 37 56.3 [ ]
Gal coord. (ep=J2000) : 		000.26892 -01.82254 [ ]
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NAME OGLE-2016-BLG-0007b

References (3 between 1850 and 2026) (Total 3)
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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