| Name | 088425 |
| Title | The mysterious survival of volatiles on the first ultra-hot Neptune |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0884250101 |
| DOI | https://doi.org/10.57780/esa-mrf0g67 |
| Author | European Space Agency |
| Description | Our team has discovered the first ultra-hot Neptune\: LTT 9779b. This exoplanet is located just 0.017 au from its G7V host star, in the middle of the so-called Neptunian desert, and its survival under presumably intense X-ray irradiation is a mystery. All previous evidence points to close-in Neptunes being stripped of their gaseous envelopes and being reduced to hot rocky cores. We propose to observe the host star with XMM-Newton in order to determine the present X-ray irradiation. If the star is found to have normal coronal activity, we will be forced to consider novel evolutionary scenarios for this system. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-05-27T18:30:27Z/2021-05-28T09:15:27Z |
| Version | 19.16_20210326_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 | 2022-07-10T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2022, The Mysterious Survival Of Volatiles On The First Ultra-Hot Neptune, 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-mrf0g67 |