Academic Journal
Gaia22dkvLb: A Microlensing Planet Potentially Accessible to Radial-velocity Characterization
| العنوان: | Gaia22dkvLb: A Microlensing Planet Potentially Accessible to Radial-velocity Characterization |
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| المؤلفون: | Wu, Z, Dong, S, Yi, T, Liu, Z, El-Badry, K, Gould, A, Wyrzykowski, L, Rybicki, KA, Bachelet, E, Christie, GW, de Almeida, L, Monard, LAG, McCormick, J, Natusch, T, Zieliński, P, Chen, H, Huang, Y, Liu, C, Mérand, A, Mróz, P, Shangguan, J, Udalski, A, Woillez, J, Zhang, H, Hambsch, FJ, Mikołajczyk, PJ, Gromadzki, M, Ratajczak, M, Kruszyńska, K, Ihanec, N, Pylypenko, U, Sitek, M, Howil, K, Zola, S, Michniewicz, O, Zejmo, M, Lewis, F, Bronikowski, M, Potter, S, Andrzejewski, J, Merc, J, Street, R, Fukui, A, Figuera Jaimes, R, Bozza, V, Rota, P, Cassan, A, Dominik, M, Tsapras, Y, Hundertmark, M, Wambsganss, J, Bąkowska, K, Słowikowska, A |
| بيانات النشر: | American Astronomical Society |
| سنة النشر: | 2024 |
| المجموعة: | Auckland University of Technology: AUT Scholarly Commons |
| مصطلحات موضوعية: | 5109 Space Sciences, 51 Physical Sciences, 0201 Astronomical and Space Sciences, Astronomy & Astrophysics, 5101 Astronomical sciences, 5107 Particle and high energy physics |
| الوصف: | We report discovering an exoplanet from following up a microlensing event alerted by Gaia. The event Gaia22dkv is toward a disk source rather than the traditional bulge microlensing fields. Our primary analysis yields a Jovian planet with M p = 0.59 − 0.05 + 0.15 M J at a projected orbital separation r ⊥ = 1.4 − 0.3 + 0.8 au, and the host is a ∼1.1 M ⊙ turnoff star at ∼1.3 kpc. At r ′ ≈ 14 , the host is far brighter than any previously discovered microlensing planet host, opening up the opportunity to test the microlensing model with radial velocity (RV) observations. RV data can be used to measure the planet’s orbital period and eccentricity, and they also enable searching for inner planets of the microlensing cold Jupiter, as expected from the “inner-outer correlation” inferred from Kepler and RV discoveries. Furthermore, we show that Gaia astrometric microlensing will not only allow precise measurements of its angular Einstein radius θ E but also directly measure the microlens parallax vector and unambiguously break a geometric light-curve degeneracy, leading to the definitive characterization of the lens system. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| تدمد: | 0004-6256 1538-3881 |
| Relation: | https://iopscience.iop.org/article/10.3847/1538-3881/ad5203; Astronomical Journal, ISSN: 0004-6256 (Print); 1538-3881 (Online), American Astronomical Society, 168(2), 62-62. doi:10.3847/1538-3881/ad5203; http://hdl.handle.net/10292/17811 |
| DOI: | 10.3847/1538-3881/ad5203 |
| الاتاحة: | http://hdl.handle.net/10292/17811 https://doi.org/10.3847/1538-3881/ad5203 |
| Rights: | OpenAccess ; http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.8A9323B2 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 00046256 15383881 |
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| DOI: | 10.3847/1538-3881/ad5203 |