A dataset provided by the European Space Agency

Name: Cepheids: Unraveling Mass Loss and Luminosity
Published: 2020-06-05T22:00:00Z

Proposal ID	084051
Title	Cepheids: Unraveling Mass Loss and Luminosity
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840510201
DOI	https://doi.org/10.5270/esa-3r6f7ic
Principal Investigator, PI	Dr Nancy Remage Evans
Abstract	The Cepheid Leavitt law (P-L relation) continues to be a cornerstone ofcosmology. However, the favored implementation in the infrared requires anunderstanding of CircumStellar Envelopes (CSEs) seen around many Cepheids. CSEsmay also hold the key to possible pulsation driven mass-loss, an importantcomponent evolutionary modeling. Recently discovered X-ray bursts modulated bythe pulsation cycle provide a possible link to CSEs. The observations requestedhere will test the link between X-rays and CSEs (Eta Aql), and also theconnection to the atmosphere collapse X-ray trigger (Zeta Gem).
Publications	X-Rays in Cepheids: XMM-Newton Observations of u03b7 Aql \|Evans Nancy Remage Pillitteri Ignazio et al. \| AJ \| 162-92 \| 2021 \| 2021AJ....162...92E \| http://ui.adsabs.harvard.edu/#abs/2021AJ....162...92E X-Rays in Cepheids: Identifying Low-mass Companions of Intermediate-mass Stars \|Evans Nancy Remage Engle Scott et al. \| ApJ \| 938-153 \| 2022 \| 2022ApJ...938..153E \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...938..153E The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2019-05-12T02:00:50Z/2019-05-12T22:50:50Z
Version	17.56_20190403_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	2020-06-05T22:00:00Z
Last Update	2025-01-27
Keywords	"cses eta aql", "`` atmosphere collapse", "favored implementation", "mass loss", "cepheid leavitt law", "xray bursts modulated", "cepheids \:", "circumstellar envelopes cses", "component evolutionary modeling", "pulsation cycle"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Nancy Remage Evans, 2020, 'Cepheids: Unraveling Mass Loss and Luminosity', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3r6f7ic