| Proposal ID | 089201 |
| Title | An HST exclusive look at two rising stars: high-energy spectra of the two closes |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0892010101 |
| DOI | https://doi.org/10.57780/esa-hnkh14a |
| Principal Investigator, PI | Dr Hannah Diamond-Lowe |
| Abstract | As we build towards robustly detecting and characterizing the atmospheres ofterrestrial exoplanets with JWST, we cannot forget to take a close look at thelow-mass stars they orbit. Complete coverage of M dwarf ultraviolet spectra areneeded to determine the photochemical production rates of molecular species interrestrial planet atmospheres, which will alert us to when disequilibriumchemistry, a sign of surface processes or even life, is present. High-energyspectra from the UV to X-ray are also needed to calculate mass loss rates fromplanetary atmospheres, which can explain the lack of atmospheres aroundhighly-irradiated terrestrial worlds. LTT 1445Ab and GJ 486b are two of the mostspectroscopically accessible terrestrial exoplanets. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-12-23T01:56:49Z/2021-12-23T12:04:09Z |
| Version | 19.16_20210326_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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2023-01-14T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "ltt 1445ab", "rising stars", "terrestrial exoplanets", "mass loss rates", "hst exclusive look", "planetary atmospheres", "complete coverage", "dwarf ultraviolet spectra", "energy spectra", "disequilibrium chemistry", "low mass stars", "build towards robustly", "gj 486b", "surface processes", "molecular species", "HST", "close look", "photochemical production rates", "irradiated terrestrial worlds", "terrestrial planet atmospheres" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Hannah Diamond-Lowe, 2023, 'An HST exclusive look at two rising stars: high-energy spectra of the two closes', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-hnkh14a |