We propose to measure the high-energy irradiation of four hot Neptunes in thesolar neighborhood to determine the planetary mass loss rates. Strongirradiation of gas planets in close proximity to their host stars powers aplanetary wind. Small planets are heavily affected by the mass loss and couldeventually lose their gaseous envelopes. Our targets are among the mostpromising candidates in the search for winds of hot gas planets. We will use theX-ray luminosities to derive the total high-energy emission of the host star,which provides an estimate for the planetary mass loss rate. Thus, we candetermine the impact of photoevaporation on the evolution of these small gasplanets. The observations refine the prospects for characterizing the planetary atmospheres via transit spectroscopy.
Publications
The XUV environments of exoplanets from Jupiter-size to super-Earth |King, George W., Wheatley, Peter J., et al. | MNRAS | 478-1193 | 2018 | 2018MNRAS.478.1193K | http://ui.adsabs.harvard.edu/#abs/2018MNRAS.478.1193K
Hubble PanCET: an extended upper atmosphere of neutral hydrogen around the warm Neptune GJ 3470b |Bourrier, V., Lecavelier des Etangs, A., et al. | A&A | 620-147 | 2018 | 2018A&A...620A.147B | http://ui.adsabs.harvard.edu/#abs/2018A&A...620A.147B
A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies |Ojha, Vineet, Chand, Hum, et al. | ApJ | 896-95 | 2020 | 2020ApJ...896...95O | http://ui.adsabs.harvard.edu/#abs/2020ApJ...896...95O
The Hubble PanCET program: long-term chromospheric evolution and flaring activity of the M dwarf host GJ 3470 |Bourrier, V., dos Santos, L. A., et al. | A&A | 650-73 | 2021 | 2021A&A...650A..73B | http://ui.adsabs.harvard.edu/#abs/2021A&A...650A..73B
Planetary Parameters, XUV Environments, and Mass-loss Rates for Nearby Gaseous Planets with X-Ray-detected Host Stars |Spinelli, Riccardo, Gallo, Elena, et al. | AJ | 165-200 | 2023 | 2023AJ....165..200S | http://ui.adsabs.harvard.edu/#abs/2023AJ....165..200S
The MUSCLES Extension for Atmospheric Transmission Spectroscopy: UV and X-Ray Host-star Observations for JWST ERS & GTO Targets |Behr, Patrick R., France, Kevin, et al. | AJ | 166-35 | 2023 | 2023AJ....166...35B | http://ui.adsabs.harvard.edu/#abs/2023AJ....166...35B
A Census of Near-UV M-dwarf Flares Using Archival GALEX Data and the gPHOTON2 Pipeline |Rekhi, Param, Ben-Ami, Sagi, et al. | ApJ | 955-24 | 2023 | 2023ApJ...955...24R | http://ui.adsabs.harvard.edu/#abs/2023ApJ...955...24R
The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions |Pan, Zeyang, Qu, Zhijie, et al. | ApJS | 271-62 | 2024 | 2024ApJS..271...62P | http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P
Robust constraints on feebly interacting particles using XMM-Newton |Luque, Pedro De la Torre, Balaji, Shyam, | PhRvD | 109-L101305 | 2024 | 2024PhRvD.109j1305L | http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L
Multimessenger search for electrophilic feebly interacting particles from supernovae |Luque, Pedro De la Torre, Balaji, Shyam, | PhRvD | 109-103028 | 2024 | 2024PhRvD.109j3028L | http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L
Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints |De la Torre Luque, Pedro, Balaji, Shyam, | ApJ | 968-46 | 2024 | 2024ApJ...968...46D | http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2015-04-15T02:31:27Z/2015-08-15T00:04:51Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Mr Michael Salz, 2016, 'Characterizing the high-energy irradiation of four hot Neptunes', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2m2mhs1
