SIMBAD references

2021A&A...648L...7L - Astronomy and Astrophysics, volume 648, L7-7 (2021/4-1)

Evidence of energy-, recombination-, and photon-limited escape regimes in giant planet H/He atmospheres.

LAMPON M., LOPEZ-PUERTAS M., CZESLA S., SANCHEZ-LOPEZ A., LARA L.M., SALZ M., SANZ-FORCADA J., MOLAVERDIKHANI K., QUIRRENBACH A., PALLE E., CABALLERO J.A., HENNING T., NORTMANN L., AMADO P.J., MONTES D., REINERS A. and RIBAS I.

Abstract (from CDS):

Hydrodynamic escape is the most efficient atmospheric mechanism of planetary mass loss and has a large impact on planetary evolution. Three hydrodynamic escape regimes have been identified theoretically: energy-limited, recombination-limited, and photon-limited. However, no evidence of these regimes had been reported until now. Here, we report evidence of these three regimes via an analysis of a heliumI triplet at 10830Å and Lyα absorption involving a 1D hydrodynamic model that allows us to estimate hydrogen recombination and advection rates.In particular, we show that HD 209458 b is in the energy-limited regime, HD 189733 b is in the recombination-limited regime, and GJ 3470 b is in the photon-limited regime. These exoplanets can be considered as benchmark cases for their respective regimes.

Abstract Copyright: © ESO 2021

Journal keyword(s): planets and satellites: atmospheres - planets and satellites: gaseous planets - planets and satellites: individual: GJ 3470 b - planets and satellites: individual: HD 209458 b - planets and satellites: individual: HD 189733 b

Simbad objects: 6

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2021.08.05-02:34:10

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