| Name | 040316 |
| Title | A Systematic Study of Fossil Groups |
| URL | http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0403160101 |
| DOI | 10.5270/esa-i8ywa9w |
| Author | Dr Christopher Miller |
| Description | We will observe 3 candidate fossil groups identified using SDSS and RASS. The dozen previously known fossil groups show normal X-ray group properties, but have optical properties that are dominated by a bright central galaxy. The formation of such systems is not understood, although various mechanisms have been suggested. We will measure the luminosities, surface brightnesses, and radial temperature profiles and correlate with the optical data. Some of these systems show an excess X-ray luminosity (with respect to their temperatures or optical properties) which could be explained by cooling, entropy, or inefficient star-formation. By combining with N-body-Hydro simulations, we will learn about their abundances and formation mechanisms. |
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ApJS . 244-22 . 2019 . 2019ApJS..244...22H , Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters . Palmese, A., Annis, J., et all. . MNRAS . 493-4591 . 2020 . 2020MNRAS.493.4591P , X-ray properties of the X-CLASS-redMaPPer galaxy cluster sample: the luminosity-temperature relation . Molham, Mona, Clerc, Nicolas, et all. . MNRAS . 494-161 . 2020 . 2020MNRAS.494..161M , Accretion History of AGNs. II. Constraints on AGN Spectral Parameters Using the Cosmic X-Ray Background . Ananna, Tonima Tasnim, Treister, Ezequiel, et all. . ApJ . 889-17 . 2020 . 2020ApJ...889...17A , A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies . Ojha, Vineet, Chand, Hum, et all. . ApJ . 896-95 . 2020 . 2020ApJ...896...95O , Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks . Kosiba, Matej, Lieu, Maggie, et all. . MNRAS . 496-4141 . 2020 . 2020MNRAS.496.4141K , SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release . Clerc, N., Kirkpatrick, C. C., et all. . MNRAS . 497-3976 . 2020 . 2020MNRAS.497.3976C , |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-06-10T08:14:37Z/2006-08-10T18:32:25Z |
| 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 | 2007-09-10T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2007-09-10T00:00:00Z, 040316, 17.56_20190403_1200. https://doi.org/10.5270/esa-i8ywa9w |