Home Earth and Planetary The imprint of X-ray photoevaporation of planet-forming discs on the orbital...

[1812.02173] The imprint of X-ray photoevaporation of planet-forming discs on the orbital distribution of giant planets


(Submitted on 5 Dec 2018)

Abstract: High energy radiation from a planet host star can have strong influence on
the final habitability of a system through several mechanisms. In this context
we have constructed a catalogue containing the X-ray luminosities, as well as
basic stellar and planetary properties of all known stars hosting giant planets
(> 0.1 Mjup) that have been observed by the Chandra X-ray Observatory,
XMM-Newton and/or ROSAT. Specifically in this paper we present a first
application of this catalogue to search for a possible imprint of X-ray
photoevaporation of planet-forming discs on the present-day orbital
distribution of the observed giant planets. We found a suggestive void in the
semi-major axis, a, versus X-ray luminosity, Lx, plane, roughly located between
a ~ 0.05-1 au and Lx ~10^27-10^29 erg/s, which would be expected if
photoevaporation played a dominant role in the migration history of these
systems. However, due to the small observational sample size, the statistical
significance of this feature cannot be proven at this point.

Comments:12 pages; accepted for publication on December 4, 2018 in MNRAS. The catalog presented in this paper is available for download on Harvard Dataverse (this https URL)
Subjects:Earth and Planetary Astrophysics (astro-ph.EP); Solar and Stellar Astrophysics (astro-ph.SR)
Cite as:arXiv:1812.02173 [astro-ph.EP]
arXiv:1812.02173v1 [astro-ph.EP]
for this version)

Submission history

From: Kristina Monsch [view email]

Wed, 5 Dec 2018 19:00:00 UTC (154 KB)


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