| Name | 050369 |
| Title | The Galactic Abundances of Fe, Ne, and Mg |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0503690101 |
| DOI | https://doi.org/10.5270/esa-x01lzw5 |
| Author | European Space Agency |
| Description | The history of Galactic star formation is coded in the ISM through elemental abundances and the ratio of the Fe-group to lighter species. This important area has been the domain of optical and UV astronomers, whose abundances of Galactic interstellar gas are subject to significant uncertainties due to (the unknown) depletion onto dust grains and the need to adopt a photoionization model. A new method, using X-ray observations can measure elemental abundances without such biases, and oxygen abundances are already measured with this technique. We extend this method to measure the abundances of Fe, Ne, and Mg by the magnitude of their absorption edges. This requires a high N(HI), so our target is a bright blazar projected close to the Galactic midplane. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2008-02-28T14:36:51Z/2008-08-19T03:53:11Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2009-09-30T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2009, The Galactic Abundances Of Fe Comma Ne Comma And Mg, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-x01lzw5 |