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 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 (~0.15 keV), XMM is uniquely suited for the science goals of this proposal.
Publication Anchoring the Distance Scale via X-Ray-Infrared Data for Cepheid Clusters: SU Cas . Majaess, D., Turner, D. G., et all. . ApJ . 753-144 . 2012 . 2012ApJ...753..144M ,
Discovery of the Hard Spectrum VHE gamma-Ray Source HESS J1641-463 . Abramowski, A., Aharonian, F., et all. . ApJ . 794-1 . 2014 . 2014ApJ...794L...1A ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
The population of X-ray supernova remnants in the Large Magellanic Cloud . Maggi, P., Haberl, F., et all. . A&A . 585-162 . 2016 . 2016A&A...585A.162M ,
The Secret Lives of Cepheids: A Multi-Wavelength Study of the Atmospheres and Real-Time Evolution of Classical Cepheids . Engle, Scott, . PhDT . 0-45 . 2015 . 2015PhDT........45E ,
Hubble Space Telescope Snapshot Survey for Resolved Companions of Galactic Cepheids . Evans, Nancy Remage, Bond, Howard E., et all. . AJ . 151-129 . 2016 . 2016AJ....151..129E ,
Resolved Companions of Cepheids: Testing the Candidates with X-Ray Observations . Evans, Nancy Remage, Pillitteri, Ignazio, et all. . AJ . 151-108 . 2016 . 2016AJ....151..108E ,
The Secret Lives of Cepheids: Evolution, Mass-Loss, and Ultraviolet Emission of the Long-period Classical Cepheid . Neilson, Hilding R., Engle, Scott G., et all. . ApJ . 824-1 . 2016 . ...,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
The Secret Lives of Cepheids: delta Cep---The Prototype of a New Class of Pulsating X-Ray Variable Stars . Engle, Scott G., Guinan, Edward F., et all. . ApJ . 838-67 . 2017 . 2017ApJ...838...67E ,
Identification of high-mass X-ray binaries selected from XMM-Newton observations of the LMC* . van Jaarsveld, N., Buckley, D. A. H., et all. . MNRAS . 475-3253 . 2018 . 2018MNRAS.475.3253V ,
X-Ray Luminosity and Size Relationship of Supernova Remnants in the LMC . Ou, Po-Sheng, Chu, You-Hua, et all. . ApJ . 863-137 . 2018 . 2018ApJ...863..137O ,
X-Ray, UV and Optical Observations of Classical Cepheids: New Insights into Cepheid Evolution, and the Heating and Dynamics of Their Atmospheres . Engle, Scott G., Guinan, Edward F., . JASS . 29-181 . 2012 . 2012JASS...29..181E ,
New optically identified supernova remnants in the Large Magellanic Cloud . Yew, Miranda, Filipoviu0107, Miroslav D., et all. . MNRAS . 500-2336 . 2021 . 2021MNRAS.500.2336Y ,
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, 2011-04-14T00:00:00Z, 060374, 17.56_20190403_1200. https://doi.org/10.5270/esa-1pnbovm