J/A+A/661/A23 Exoplanet X-ray irradiation and evaporation rates (Foster+, 2022)
Exoplanet X-ray irradiation and evaporation rates with eROSITA.
Foster G., Poppenhaeger K., Ilic N., Schwope A.
<Astron. Astrophys. 661, A23 (2022)>
=2022A&A...661A..23F 2022A&A...661A..23F (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; X-ray sources ; Exoplanets
Keywords: stars: coronae - stars: activity - planet-star interactions -
planets and satellites: atmospheres - X-rays: stars
Abstract:
High-energy irradiation is a driver for atmospheric evaporation and
mass loss in exoplanets. This work is based on data from eROSITA, the
soft X-ray instrument on board the Spectrum Roentgen Gamma (SRG)
mission, as well as on archival data from other missions. We aim to
characterise the high-energy environment of known exoplanets and
estimate their mass-loss rates. We use X-ray source catalogues from
eROSITA, XMM-Newton, Chandra, and ROSAT to derive X-ray luminosities
of exoplanet host stars in the 0.2-2 keV energy band with an
underlying coronal, that is, optically thin thermal spectrum. We
present a catalogue of stellar X-ray and EUV luminosities,
exoplanetary X-ray and EUV irradiation fluxes, and estimated mass-loss
rates for total of 287 exoplanets, 96 of which are characterised for
the first time based on new eROSITA detections. We identify 14
first-time X-ray detections of transiting exoplanets that are subject
to irradiation levels known to cause observable evaporation signatures
in other exoplanets. This makes them suitable targets for follow-up
observations.
Description:
This table contains an relevent parameters to characterise the
high-energy environment of known exoplanets and estimate their
mass-loss rates. In columns 4 and 6 values the radius and mass are
given in terms of Earth mass and radius respectively. The flags in
columns 5 and 7 denote planets which had no measured values for there
respective mass and radius whose values were estimated according to
the mass-radius relationship by Chen & Kipping (2017ApJ...834...17C 2017ApJ...834...17C,
Cat. J/ApJ/834/17). Column 11 is a flag which denotes that the host
star's adopted X-ray flux and all entries derived from it were
adjusted for unresolved bound stellar companions. Column 12 gives
provenance of the used X-ray flux is given as E/R/X/C for eROSITA,
ROSAT, XMM-Newton, and Chandra, respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 220 344 Exoplanet irradiation fluxes and mass-loss rates
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See also:
J/ApJ/834/17 : Mass + radius of planets, moons, low mass stars (Chen+, 2017)
J/A+A/661/A1 : The eFEDS X-ray catalogs (V7.4) (Brunner+, 2022)
J/A+A/661/A2 : Galaxy clusters and groups in eFEDS (Liu+, 2022)
J/A+A/661/A3 : eFEDS counterparts to point-like sources (Salvato+, 2022)
J/A+A/661/A4 : eFEDS optical cluster and group catalog (Klein+, 2022)
J/A+A/661/A5 : The eFEDS AGN catalog (Liu+, 2022)
J/A+A/661/A7 : X-ray properties of eFEDS clusters and groups (Bahar+, 2022)
J/A+A/661/A8 : eFEDS catalogue of variable X-ray sources (Boller+, 2022)
J/A+A/661/A10 : eFEDS galaxy clusters and groups in disguise (Bulbul+, 2022)
J/A+A/661/A23 : Exoplanet X-ray irradiation & evaporation rates (Foster+, 2022)
J/A+A/661/A24 : Corona-chromosphere connection (Fuhrmeister+, 2022)
J/A+A/661/A29 : First eROSITA study of nearby M dwarfs (Magaudda+, 2022)
J/A+A/661/A34 : eta Cha cluster eROSITA X-ray scan (Robrade+, 2022)
J/A+A/661/A35 : eROSITA study of 47 Tuc globular cluster (Saeedi+, 2022)
J/A+A/661/A38 : SRG/ART-XC 1st year all-sky X-ray survey (Pavlinsky+, 2022)
J/A+A/661/A40 : eRASS1 X-ray sources Sco-Cen members (Schmitt+, 2022)
J/A+A/661/A44 : A first eROSITA view of ultracool dwarfs (Stelzer+, 2022)
Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 27 A27 --- Host Host star name
31 A1 --- Pl-letter Planet letter
33- 55 F23.18 AU Pl-asem ? Planet semi-major axis
57- 62 F6.1 Mgeo Mass ? Planet mass
64- 66 F3.1 --- f_Mass [0/1]? Flag if mass was calculated
68- 71 F4.1 Rgeo Rad ? Planet radius
73- 75 F3.1 --- f_Rad [0/1]? Flag if radius was calculated
77- 86 F10.6 pc Dist ? Host star distance
88 I1 --- ftrans [0/1]Flag if exoplanet is transiting
90- 96 E7.2 mW/m2 FX Adopted stellar X-ray flux, 0.2-2 keV
98 A1 --- binary [0/1]Multi-stellar system flag
100 A1 --- Xray-prov [CERX] Adopted X-ray flux data source (1)
102-123 E22.17 10-7W LX ?=- Stellar X-ray luminosity, 0.2-2keV
125-146 E22.17 10-7W LXUV ?=- Stellar XUV luminosity
148-169 E22.17 mW/m2 FplX ?=- Planet Xray irradiation flux, 0.2-2keV
171-190 E20.15 mW/m2 FplXUV ?=- Planetary XUV irradiation flux
192-220 F29.15 g/s dM/dt ?=- Estimated planetary mass loss rate
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Note (1): X-ray flux data source flag as follows:
E = eROSITA
R = ROSAT
X = XMM-Newton
C = Chandra
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Acknowledgements:
Grace Foster, gfoster(at)aip.de
References:
The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the
SRG mission, 2022, A&A, 661, A1-A46
(End) Grace Foster [AIP], Patricia Vannier [CDS] 27-Jul-2021