A dataset provided by the European Space Agency

Name 050607
Title Measuring the evaporation of close-in extra-solar planets


DOI https://doi.org/10.5270/esa-2su90p5
Author Dr Peter Wheatley
Description The discovery with HST of evaporation of the transiting exoplanet HD209458b has raised the possibility that the evolution of close-in planets is dominated by mass loss. To date, however, this remains the only detection of evaporation because STIS was lost shortly after making this discovery. Here we show that XMM-Newton transit spectroscopy is also sensitive to absorption by material evaporating from close-in extra-solar planets. Indeed, X-ray continuum absorption has the potential to measure mass loss rates, whereas HST could only place a lower limit. We propose an XMM-Newton transit observation of the nearest and brightest transiting planet, HD189733b. Simultaneous measurement of X-ray irradiation and evaporation rates will provide the first direct test of planetary evaporation models.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2007-04-17T14:06:31Z/2007-04-18T05:20:49Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2008-05-01T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-05-01T00:00:00Z, 050607, 17.56_20190403_1200. https://doi.org/10.5270/esa-2su90p5