A dataset provided by the European Space Agency

Proposal ID 020479
Title DWARF GALAXIES IN THE LOCAL GROUP
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DOI https://doi.org/10.5270/esa-gltxm2m
Principal Investigator, PI Dr ROSANNE DI STEFANO
Abstract We propose XMM observations of 10 dwarf galaxies (DGs) in the Local Group. Thegalaxies form a uniformly selected sample whose members span a wide range ofmorphologies and of physical parameters, including total mass, fraction of massin neutral hydrogen, and mass-to-light ratios. With 115 ksec in total, we willreach luminosity limits ranging from 3e33 erg/s to 1.2e36 erg/s. We will detectmore than 100 X-ray sources (XRSs). Our primary goal is to explore the range ofX-ray properties of DGs. We will (1) probe the nuclear regions, (2) compare XRSsin regions with recent star formation with those in older populations, (3)determine if there is a per capita excess of XRSs relative to the disk of theMilky Way, and (4) relate the X-ray properties of DGs to their other characteristics.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-12-23T23:05:47Z/2005-05-04T08:55:38Z
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 2006-09-27T00:00:00Z
Keywords "neutral hydrogen", "star formation", "luminosity limits ranging", "xray properties", "2e36 erg", "light ratios", "XMM", "compare xrss", "nuclear region", "3e33 erg", "physical parameters", "galaxy form", "capita excess", "xray sources xrss", "dwarf galaxy", "wide range", "dwarf galaxy dgs", "xrss relative"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr ROSANNE DI STEFANO, 2006, 'DWARF GALAXIES IN THE LOCAL GROUP', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gltxm2m