| Name | 076297 |
| Title | Exposing the Secret X-ray Lives of Cepheids with XMM-Newton |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0762970401 |
| DOI | https://doi.org/10.5270/esa-s8rorp3 |
| Author | European Space Agency |
| Description | We propose XMM observations of two Classical Cepheids to confirm X-ray variabili ty in beta Dor and to detect RT Aur. The data will complement our existing XMM d ata and HST UV spectroscopy for Dor, whose UV emissions show phased variabili ty from hot plasmas. The UV emissions peak between phases 0.7-0.8p and originate from pulsation-induced shocks. We request three 40-ksec exposures of beta Dor t o complete its X-ray light curve and confirm the enhanced activity around 0.5p o bserved in our previous XMM data. If confirmed, the X-ray phasing will contrast the UV emissions, providing vital information on the atmospheric heating mechani sm(s). We also propose a 30-ksec observation of the nearby Cepheid RT Aur to sea rch for X-ray activity and expand the Cepheid X-ray Inventory parameter space. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2015-05-25T23:14:08Z/2015-09-15T01:34:53Z |
| 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 | 2016-10-05T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2016, Exposing The Secret X-Ray Lives Of Cepheids With Xmm-Newton, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-s8rorp3 |