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...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
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| Series: | The Astronomical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-3881/adeb76 |
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| Summary: | 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). |
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| ISSN: | 1538-3881 |