A dataset provided by the European Space Agency

Proposal ID 014157
Title Stellar Mass Loss Versus External Accretion in X-ray Bright Ellipticals
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0141570101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0141570201

DOI https://doi.org/10.5270/esa-8ghsyit
Principal Investigator, PI Dr Craig Sarazin
Abstract Observations of N4552, N4125, N1395, and N1600, four X-ray-bright ellipticalgalaxies with extended emission line filaments and dust, will be used to studythe interaction between the hot, X-ray emitting gas and cooler interstellarmaterial. We will determine whether heat conduction into the cooler gas orenergy losses to grains affect the thermal state of the gas. The elementalabundances and gradients in the hot gas will be derived and compared to thestellar values. If the gas results from local stellar mass loss, the abundancesshould be similar. If there is a cooling flow, the abundances at each radiusshould reflect those of stars at larger radii. The RGS will be used to dispersethe central regions of the galaxies and to detect or limit low ionization X-ray lines from cooling gas.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-07-10T09:27:28Z/2003-10-17T23:31:17Z
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 2004-11-05T00:00:00Z
Keywords "hot gas", "heat conduction", "stellar values", "cooling gas", "emission line filaments", "xray emitting gas", "elemental abundance", "cooler interstellar material", "xray bright ellipticals", "cooler gas", "larger radii", "central region", "stellar mass loss", "grains affect", "external accretion", "energy losses", "cooling flow"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Craig Sarazin, 2004, 'Stellar Mass Loss Versus External Accretion in X-ray Bright Ellipticals', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-8ghsyit