| Proposal ID | 077100 |
| Title | Measuring Absolute Abundances in NGC 5548 and Linking the UV and X-ray Outflows |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0771000101 |
| DOI | https://doi.org/10.5270/esa-cbzytqe |
| Principal Investigator, PI | Dr Gerard Kriss |
| Abstract | We propose to obtain HST/COS spectra of the Seyfert 1 galaxy NGC 5548 with 9orbits in conjunction with 60 ks of XMM-Newton time. Our observations willmeasure absolute abundances anchored by accurate H I column densities for boththe narrow and broad UV absorption lines. These will add fidelity to ourmeasurements of the outflowing mass flux and kinetic energy obtained in our 2013campaign using XMM-Newton and COS, and solve discrepancies between the UV and X-ray absorbers in NGC 5548. Due to the profound influence of the new soft X-rayobscurer in NGC 5548 discovered during our 2013 campaign, simultaneous X-rayspectra are essential for determining the ionizing spectral energy distribution. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2016-01-14T05:52:27Z/2016-01-16T16:03:11Z |
| 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 | 2017-02-02T23:00:00Z |
| Last Update | 2026-03-04 |
| Keywords | "x ray absorbers", "add fidelity", "soft xray obscurer", "xmm newton time", "HST", "cos spectra", "ngc 5548", "XMM-Newton", "xray outflows", "column densities", "galaxy ngc 5548", "kinetic energy", "xmm newton", "absolute abundance", "absolute abundance anchored", "NGC 5548", "profound influence", "XMM", "2013 campaign", "outflowing mass flux", "xray spectra" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Gerard Kriss, 2017, 'Measuring Absolute Abundances in NGC 5548 and Linking the UV and X-ray Outflows', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-cbzytqe |