A dataset provided by the European Space Agency

Name 060374
Title The Secret X-ray Lives of Cepheids: A New Frontier in X-ray Astronomy with XMM


DOI https://doi.org/10.5270/esa-1pnbovm
Author Dr Edward Guinan
Description Thanks to XMM Cycle 6+7 approved observations for our program, we are now immersed in a stellar mystery- why and how are Classical Cepheids producing X- rays? The 3 observed for us so far (Polaris, delta Cep & beta Dor) have been detected as X-ray sources - against previously held notions. Our recent XMM results mark the first unambiguous detections of Cepheids in X-rays. We now have 2 aims: obtain deeper spectra of d Cep & b Dor at different critical pulsation phases to understand how they produce X-rays - and to expand the database of Cepheid X-ray detections to different pulsation properties. We submit a Large Proposal of 8 observations (410-ksec). With its enhanced sensitivity (5-6x Chandra) and soft response (virgul0.15 keV), XMM is uniquely suited for the science goals of this proposal.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2010-01-20T18:04:11Z/2010-03-24T23:40:36Z
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 2011-04-14T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2011, 060374, 17.56_20190403_1200. https://doi.org/10.5270/esa-1pnbovm