Proposal ID | 020479 |
Title | DWARF GALAXIES IN THE LOCAL GROUP |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0204790101 |
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 |
Last Update | 2025-01-27 |
Keywords | "dwarf galaxy dgs", "physical parameters", "nuclear region", "dwarf galaxy", "neutral hydrogen", "xray sources xrss", "star formation", "3e33 erg", "galaxy form", "compare xrss", "light ratios", "xray properties", "wide range", "xrss relative", "XMM", "2e36 erg", "capita excess", "luminosity limits ranging" |
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 |