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 Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE \|Ma Xiangyao Zhang Yanxia et al. \| AJ \| 168-210 \| 2024 \| 2024AJ....168..210M \| http://ui.adsabs.harvard.edu/#abs/2024AJ....168..210M
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	2026-03-04
Keywords	"pulsation cycle", "xray bursts modulated", "`` atmosphere collapse", "cepheids \:", "component evolutionary modeling", "cses eta aql", "favored implementation", "circumstellar envelopes cses", "cepheid leavitt law", "mass loss"
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