| Proposal ID | 055628 |
| Title | Hot gas phase abundances in the 1 kpc central region of hot-spot galaxies. |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0556280101 |
| DOI | https://doi.org/10.5270/esa-pq74yi7 |
| Principal Investigator, PI | Prof Angeles Diaz |
| Abstract | We propose to perform abundance determinations of the hot gas in the central $sim $ 1 kpc of two galaxies with circumnuclear star forming regions for whichthe analysis of the warm ionized gas (HII regions) yields an oxygen abundancelower than expected from empirical abundance indicators. These findings point toan effect similar to what is found for M82, i.e. a defficiency of light alphaelements (O, Ne) in the central regions. If this is common among regionsdominated by recent star formation, the oxygen abundances found for the warmionized gas might not be representative of the true metal content of theseregions. This could have a profound effect on abundance calibrations leading tofundamental relations like the Mass-Metallcity and Luminosity-Metallicity relations. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2008-05-21T02:40:06Z/2009-04-23T23:32:26Z |
| 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 | 2010-05-30T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "oxygen abundance", "central region", "galaxy ..", "luminosity metallicity relations", "light alpha elements", "hot spot", "empirical abundance indicators", "metal content", "M82", "oxygen abundance lower", "mass metallcity", "warm ionized gas", "fundamental relations", "abundance calibrations leading", "profound effect", "star formation", "region dominated", "perform abundance determinations", "hot gas" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Angeles Diaz, 2010, 'Hot gas phase abundances in the 1 kpc central region of hot-spot galaxies.', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pq74yi7 |