A dataset provided by the European Space Agency

Proposal ID 078235
Title A New Class of Massive Spiral Galaxies with High HI Masses
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782350301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782350501

DOI https://doi.org/10.5270/esa-g9uvfnm
Principal Investigator, PI Prof Joel Bregman
Abstract The most extensive HI survey, obtained with Arecibo, revealed a new category ofspiral galaxy in the local volume: massive spirals with a gaseous contentcomparable the stellar mass. These galaxies have high spin parameters, which maybe slowing the conversion of gas into stars. The gaseous disks are regular,suggesting that they arise from a radiatively cooling hot galactic halo that isparticularly massive and X-ray luminous. These may be local analogs to theactive hot mode accretion process that was common at z ~ 1-3 but is rare today.We propose the first X-ray observations of this newly recognized class ofgalaxies.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-11-26T12:50:00Z/2016-12-05T01:07:23Z
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 2018-01-04T23:00:00Z
Keywords "gaseous dis", "stellar mass", "local volume", "xray luminous", "recognized class", "massive spiral galaxy", "massive spirals", "spiral galaxy", "hi masses", "spin parameters", "local analogs", "gaseous content comparable", "extensive hi survey"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Joel Bregman, 2018, 'A New Class of Massive Spiral Galaxies with High HI Masses', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-g9uvfnm