A dataset provided by the European Space Agency

Proposal ID 020738
Title BLUE COMPACT DWARF GALAXY VIIZW403
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0207380101

DOI https://doi.org/10.5270/esa-1kt0j8t
Principal Investigator, PI Dr KIYOSHI HAYASHIDA
Abstract VIIZw403 is one of the nearest blue compact dwarf galaxies with extremely lowmetallicity of 1/22-1/15 solar. We found a point-like source about 0.3 arcminapart from the center of the galaxy in the Chandra archived data. Emission lineof Oxygen is clearly visible in the X-ray spectrum of the source, indicating thethermal emission from hot optically thin plasma. The X-ray luminosity ofLx~10e38 erg/s, much higher than typical galactic SNRs, pauses a question on itsnature. We will obtain high quality X-ray spectrum with the XMM-Newton. Metalabundance determined in the observation will illustrate the origin of hot gas ingalaxies, in its simplified case.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-10-07T02:23:40Z/2004-10-07T15:26:08Z
Version 21.51_20241115_1113
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 2005-11-11T00:00:00Z
Last Update 2026-07-09
Keywords "quality xray spectrum", "XMM-Newton", "chandra archived data", "hot gas", "low metallicity", "thermal emission", "XMM", "xray spectrum", "emission line", "xray luminosity", "metal abundance", "arcmin apart", "xmm newton", "10e38 erg"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr KIYOSHI HAYASHIDA, 2005, 'BLUE COMPACT DWARF GALAXY VIIZW403', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-1kt0j8t
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.