A dataset provided by the European Space Agency

Name 084379
Title GJ 4276: Slow rotator with eccentric planet


DOI https://doi.org/10.5270/esa-hllbygn
Author Dr Stefan Czesla
Description We propose to observe the slowly rotating M3.5 type planet host star GJ 4276 with XMM-Newton for 12 ks. In the frame of the CARMENES radial velocity survey, a Neptune-mass planet with one of the most eccentric orbits (e=0.38) known to date has recently been discovered around GJ 4276. The host star is close to the boundary of fully convective stars. Optical photometry shows GJ 4276 to have a rotation period of 65 d, making it one of the slowest rotators known in its mass range. Our proposed XMM-Newton observation will allow us to characterize the X-ray emission of this star, put it into the context of slowly rotating M dwarfs, and determine the irradiation level of its planet.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2019-05-27T04:41:54Z/2019-05-27T11:16:54Z
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 2020-06-27T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2020-06-27T22:00:00Z, 084379, 17.56_20190403_1200. https://doi.org/10.5270/esa-hllbygn