H<i>?</i> and He I absorption in HAT-P-32 b observed with CARMENES

نویسندگان

چکیده

We analyze two high-resolution spectral transit time series of the hot Jupiter HAT-P-32 b obtained with CARMENES spectrograph. Our new XMM-Newton X-ray observations system show that fast-rotating F-type host star exhibits a high luminosity 2.3 × 10 29 erg s ?1 (5–100 ?), corresponding to flux 6.9 4 cm ?2 at planetary orbit, which results in an energy-limited escape estimate about 13 g for mass-loss rate. The significant, time-dependent absorption H ? and He I ? 10833 triplet lines maximum depths 3.3% 5.3%. mid-transit signals are consistent from one-dimensional hydrodynamic modeling, also yields rates on order . observe early ingress redshifted component transmission signal, extends into component, persisting until middle optical transit. While super-rotating wind can explain absorption, we find up-orbit stream, transporting mass direction star, provides plausible explanation pre-transit signal. This makes benchmark exploring atmospheric dynamics via spectroscopy.

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ژورنال

عنوان ژورنال: Astronomy and Astrophysics

سال: 2021

ISSN: ['0004-6361', '1432-0746']

DOI: https://doi.org/10.1051/0004-6361/202039919