| Online-Ressource |
Verfasst von: | Czesla, Stefan [VerfasserIn]  |
| Lampón, M. [VerfasserIn]  |
| Sanz-Forcada, J. [VerfasserIn]  |
| Muñoz, A. García [VerfasserIn]  |
| López-Puertas, M. [VerfasserIn]  |
| Nortmann, L. [VerfasserIn]  |
| Yan, D. [VerfasserIn]  |
| Nagel, E. [VerfasserIn]  |
| Yan, F. [VerfasserIn]  |
| Schmitt, J. H. M. M. [VerfasserIn]  |
| Aceituno, J. [VerfasserIn]  |
| Amado, P. J. [VerfasserIn]  |
| Caballero, J. A. [VerfasserIn]  |
| Casasayas-Barris, N. [VerfasserIn]  |
| Henning, Thomas [VerfasserIn]  |
| Khalafinejad, Sara [VerfasserIn]  |
| Molaverdikhani, Karan [VerfasserIn]  |
| Montes, D. [VerfasserIn]  |
| Pallé, E. [VerfasserIn]  |
| Reiners, A. [VerfasserIn]  |
| Schneider, P. C. [VerfasserIn]  |
| Ribas, I. [VerfasserIn]  |
| Quirrenbach, Andreas [VerfasserIn]  |
| Osorio, M. R. Zapatero [VerfasserIn]  |
| Zechmeister, M. [VerfasserIn]  |
Titel: | Hα and He I absorption in HAT-P-32 b observed with CARMENES |
Titelzusatz: | detection of Roche lobe overflow and mass loss |
Verf.angabe: | S. Czesla, M. Lampón, J. Sanz-Forcada, A. García Muñoz, M. López-Puertas, L. Nortmann, D. Yan, E. Nagel, F. Yan, J.H.M.M. Schmitt, J. Aceituno, P.J. Amado, J.A. Caballero, N. Casasayas-Barris, Th. Henning, S. Khalafinejad, K. Molaverdikhani, D. Montes, E. Pallé, A. Reiners, P.C. Schneider, I. Ribas, A. Quirrenbach, M.R. Zapatero Osorio, M. Zechmeister |
E-Jahr: | 2022 |
Jahr: | January 2022 |
Umfang: | 26 S. |
Fussnoten: | Published online 20 December 2021 ; Gesehen am 03.03.2022 |
Titel Quelle: | Enthalten in: Astronomy and astrophysics |
Ort Quelle: | Les Ulis : EDP Sciences, 1969 |
Jahr Quelle: | 2022 |
Band/Heft Quelle: | 657(2022), Artikel-ID A6, Seite 1-26 |
ISSN Quelle: | 1432-0746 |
Abstract: | We analyze two high-resolution spectral transit time series of the hot Jupiter HAT-P-32 b obtained with the CARMENES spectrograph. Our new <i>XMM-Newton<i/> X-ray observations of the system show that the fast-rotating F-type host star exhibits a high X-ray luminosity of 2.3 × 10<sup>29<sup/> erg s<sup>−1<sup/> (5-100 Å), corresponding to a flux of 6.9 × 10<sup>4<sup/> erg cm<sup>−2<sup/> s<sup>−1<sup/> at the planetary orbit, which results in an energy-limited escape estimate of about 10<sup>13<sup/> g s<sup>−1<sup/> for the planetary mass-loss rate. The spectral time series show significant, time-dependent absorption in the H<i>α<i/> and He I<i>λ<i/>10833 triplet lines with maximum depths of about 3.3% and 5.3%. The mid-transit absorption signals in the H<i>α<i/> and He I<i>λ<i/>10833 lines are consistent with results from one-dimensional hydrodynamic modeling, which also yields mass-loss rates on the order of 10<sup>13<sup/> g s<sup>−1<sup/>. We observe an early ingress of a redshifted component of the transmission signal, which extends into a redshifted absorption component, persisting until about the middle of the optical transit. While a super-rotating wind can explain redshifted ingress absorption, we find that an up-orbit stream, transporting planetary mass in the direction of the star, also provides a plausible explanation for the pre-transit signal. This makes HAT-P-32 a benchmark system for exploring atmospheric dynamics via transmission spectroscopy. |
DOI: | doi:10.1051/0004-6361/202039919 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1051/0004-6361/202039919 |
| Volltext: https://www.aanda.org/articles/aa/abs/2022/01/aa39919-20/aa39919-20.html |
| DOI: https://doi.org/10.1051/0004-6361/202039919 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 179462015X |
Verknüpfungen: | → Zeitschrift |
Hα and He I absorption in HAT-P-32 b observed with CARMENES / Czesla, Stefan [VerfasserIn]; January 2022 (Online-Ressource)