A dataset provided by the European Space Agency

Name 080058
Title Dragonfly 44 and the Nature of Ultra-Diffuse Galaxies


DOI https://doi.org/10.5270/esa-yz5tufm
Author Mr Edmund Hodges-Kluck
Description Dragonfly 44 is an ultra-diffuse galaxy with a stellar mass of only 3e8 Msun but
a dynamical mass of 1e12 Msun and about 100 globular clusters. This suggests
that it is a central galaxy that somehow lost its gas, rather than a stripped
satellite. We propose measuring the amount of hot gas, which is the primary
source of fuel for star formation in galaxies of this size, as well as its
present-day star formation rate and number of low-mass X-ray binaries. These
will provide important clues to the nature of Dragonfly 44 and the thousands of
other known ultra-diffuse galaxies.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2017-12-23T07:06:29Z/2018-01-05T06:29:47Z
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 2019-01-30T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Mr Edmund Hodges-Kluck, 2019, 080058, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yz5tufm