Investigating the Binary Source Degeneracy for Wide-orbit Planets
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 v...
| الحاوية / القاعدة: | The Astronomical Journal |
|---|---|
| المؤلفون الرئيسيون: | , |
| التنسيق: | مقال |
| اللغة: | الإنجليزية |
| منشور في: |
IOP Publishing
2025-01-01
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://doi.org/10.3847/1538-3881/adeb76 |
| _version_ | 1849492283997552640 |
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| author | Parisa Sangtarash Jennifer C. Yee |
| author_facet | Parisa Sangtarash Jennifer C. Yee |
| author_sort | Parisa Sangtarash |
| collection | DOAJ |
| container_title | The Astronomical Journal |
| description | 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). |
| format | Article |
| id | doaj-art-b139dd9c347d4e99a6a2bdd90266a194 |
| institution | Directory of Open Access Journals |
| issn | 1538-3881 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| spelling | doaj-art-b139dd9c347d4e99a6a2bdd90266a1942025-08-20T03:07:37ZengIOP PublishingThe Astronomical Journal1538-38812025-01-01170314110.3847/1538-3881/adeb76Investigating the Binary Source Degeneracy for Wide-orbit PlanetsParisa Sangtarash0https://orcid.org/0009-0007-4190-1269Jennifer C. Yee1https://orcid.org/0000-0001-9481-7123Department of Physics, Isfahan University of Technology , Isfahan 84156-83111, IranCenter for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA ; jyee@cfa.harvard.eduWide-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).https://doi.org/10.3847/1538-3881/adeb76Gravitational microlensing exoplanet detectionBinary source microlensing |
| spellingShingle | Parisa Sangtarash Jennifer C. Yee Investigating the Binary Source Degeneracy for Wide-orbit Planets Gravitational microlensing exoplanet detection Binary source microlensing |
| title | Investigating the Binary Source Degeneracy for Wide-orbit Planets |
| title_full | Investigating the Binary Source Degeneracy for Wide-orbit Planets |
| title_fullStr | Investigating the Binary Source Degeneracy for Wide-orbit Planets |
| title_full_unstemmed | Investigating the Binary Source Degeneracy for Wide-orbit Planets |
| title_short | Investigating the Binary Source Degeneracy for Wide-orbit Planets |
| title_sort | investigating the binary source degeneracy for wide orbit planets |
| topic | Gravitational microlensing exoplanet detection Binary source microlensing |
| url | https://doi.org/10.3847/1538-3881/adeb76 |
| work_keys_str_mv | AT parisasangtarash investigatingthebinarysourcedegeneracyforwideorbitplanets AT jennifercyee investigatingthebinarysourcedegeneracyforwideorbitplanets |