Far-UV spectroscopy of the planet-hosting star WASP-13: high-energy irradiance, distance, age, planetary mass-loss rate, and circumstellar environment

@article{Fossati2015FarUVSO,
  title={Far-UV spectroscopy of the planet-hosting star WASP-13: high-energy irradiance, distance, age, planetary mass-loss rate, and circumstellar environment},
  author={Luca Fossati and Kevin France and Tommi T. Koskinen and I. G. Juvan and Carole A. Haswell and Monika Lendl},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2015}
}
Several transiting hot Jupiters orbit relatively inactive main-sequence stars. For some of those, the logR'HK activity parameter lies below the basal level (-5.1). Two explanations have been proposed so far: (i) the planet affects the stellar dynamo, (ii) the logR'HK measurements are biased by extrinsic absorption, either by the interstellar medium (ISM) or by material local to the system. We present here Hubble Space Telescope/COS far-UV spectra of WASP-13, which hosts an inflated hot Jupiter… 
SALT observations of the chromospheric activity of transiting planet hosts: mass-loss and star–planet interactions
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We investigate under which conditions supermassive hot Jupiters can sustain source regions for radio emission, and whether this emission could propagate to an observer outside the system. We study
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WASP-12b is an extreme hot Jupiter in a 1 day orbit, suffering profound irradiation from its F type host star. The planet is surrounded by a translucent exosphere which overfills the Roche lobe and
WASP-12b: A Mass-Losing Extremely Hot Jupiter
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Magnetospheres of hot Jupiters: hydrodynamic models and ultraviolet absorption
We present hydrodynamic simulations of stellar wind-magnetosphere interactions in hot Jupiters such as WASP-12b. For fiducial stellar wind rates, we find that a planetary magnetic field of a few G
Grid of upper atmosphere models for 1–40 M⊕ planets: application to CoRoT-7 b and HD 219134 b,c
There is growing observational and theoretical evidence suggesting that atmospheric escape is a key driver of planetary evolution. Commonly, planetary evolution models employ simple analytic formulae
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References

SHOWING 1-10 OF 101 REFERENCES
No X-rays from WASP-18 - Implications for its age, activity, and the influence of its massive hot Jupiter
About 20% of the>1000 known exoplanets are Jupiter analogs orbiting very close to their parent stars. It is still under debate to what detectable level such hot Jupiters possibly a ect the activity
ABSORBING GAS AROUND THE WASP-12 PLANETARY SYSTEM*
Near-UV observations of the planet host star WASP-12 uncovered the apparent absence of the normally conspicuous core emission of the Mg II h and k resonance lines. This anomaly could be due either to
Near-ultraviolet Absorption, Chromospheric Activity, and Star-Planet Interactions in the WASP-12 system
Extended gas clouds have been previously detected surrounding the brightest known close-in transiting hot Jupiter exoplanets, HD 209458 b and HD 189733 b; we observed the distant but more extreme
On the age of stars harboring transiting planets
Results of photometric surveys have brought to light the existence of a population of giant planets orbiting their host stars even closer than the hot Jupiters (HJ), with orbital periods below 3
A bimodal correlation between host star chromospheric emission and the surface gravity of hot Jupiters
The chromospheric activity index logR'HK of stars hosting transiting hot Jupiters appears to be correlated with the planets' surface gravity. One of the possible explanations is based on the presence
The Structure of the Local Interstellar Medium. I. High-Resolution Observations of Fe II, Mg II, and Ca II toward Stars within 100 Parsecs
High-resolution absorption measurements (λ/Δλ 100,000) of the resonance lines of Fe II, Mg II, and Ca II are presented for all available observed targets within 100 pc. The Fe II and Mg II spectra
The Chemical Composition and Gas-to-Dust Mass Ratio of Nearby Interstellar Matter
We use recent results on interstellar gas toward nearby stars and interstellar by-products within the solar system to select among the equilibrium radiative transfer models of the nearest
An ultraviolet investigation of activity on exoplanet host stars
Using the far-UV (FUV) and near-UV (NUV) photometry from the NASA Galaxy Evolution Explorer (GALEX), we searched for evidence of increased stellar activity due to tidal and/or magnetic star-planet
An IUE survey of interstellar H I Ly alpha absorption. 2: Interpretations
We present an analysis of interstellar neutral hydrogen column densities obtained from archival Ly alpha absorption line data toward the complete sample of B2 and hotter stars observed at high
The Intrinsic Extreme Ultraviolet Fluxes of F5 V to M5 V Stars
Extreme ultraviolet (EUV) radiations (10-117 nm) from host stars play important roles in the ionization, heating, and mass loss from exoplanet atmospheres. Together with the host star's Lyα and
...
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