A dataset provided by the European Space Agency

Name 055387
Title Most of the Baryons in Galaxies


DOI 10.5270/esa-312e3zk
Description Galaxies are missing most of their baryons when compared to the cosmological baryon to dark matter ratio. The Milky Way is missing 2-3 of its baryons and less massive galaxies have retained less than 10% of their baryons. Theory suggests that these baryons were expelled by intense galactic winds during the primary star formation period. These galactic winds carry gas far beyond the virial radius of small and modest galaxies, but the most massive galaxies should retain much of this material. e propose to test this picture by searching for the missing baryons surrounding the most massive spiral galaxy, UGC 12591, a fairly isolated galaxy with a rotational velocity of almost 500 km-sec. If successful, we will detect a significant fraction of the 5E11 Msun of its missing baryons.
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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 ,
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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 2008-12-15T19:26:50Z/2008-12-16T17:36:19Z
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 2010-01-17T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-01-17T00:00:00Z, 055387, 17.56_20190403_1200. https://doi.org/10.5270/esa-312e3zk