A dataset provided by the European Space Agency

Name: Dragonfly 44 and the Nature of Ultra-Diffuse Galaxies
Published: 2019-01-30T23:00:00Z

Proposal ID	080058
Title	Dragonfly 44 and the Nature of Ultra-Diffuse Galaxies
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0800580101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0800580201
DOI	https://doi.org/10.5270/esa-yz5tufm
Principal Investigator, PI	Mr Edmund Hodges-Kluck
Abstract	Dragonfly 44 is an ultra-diffuse galaxy with a stellar mass of only 3e8 Msun buta dynamical mass of 1e12 Msun and about 100 globular clusters. This suggeststhat it is a central galaxy that somehow lost its gas, rather than a strippedsatellite. We propose measuring the amount of hot gas, which is the primarysource of fuel for star formation in galaxies of this size, as well as itspresent-day star formation rate and number of low-mass X-ray binaries. Thesewill provide important clues to the nature of Dragonfly 44 and the thousands ofother known ultra-diffuse galaxies.
Publications	Ultraviolet and X-ray properties of Coma.s ultra-diffuse galaxies \|Lee, Chris H., Hodges-Kluck, Edmund, \| MNRAS \| 497-2759 \| 2020 \| 2020MNRAS.497.2759L \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.497.2759L The Archetypal Ultra-diffuse Galaxy, Dragonfly 44, Is not a Dark Milky Way \|Bogd\\u00e1n, \\u00c1kos, \| ApJ \| 901-30 \| 2020 \| 2020ApJ...901L..30B \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...901L..30B Probing ultradiffuse galaxies out to the virial radius of the Coma cluster with XMM-Newton \|Mirakhor, M. S., Walker, S. A., \| MNRAS \| 503-679 \| 2021 \| 2021MNRAS.503..679M \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503..679M Classification of 4XMM-DR9 sources by machine learning \|Zhang, Yanxia, Zhao, Yongheng, \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z The Coma Cluster at LOFAR Frequencies. II. The Halo, Relic, and a New Accretion Relic \|Bonafede, A., Brunetti, G., et al. \| ApJ \| 933-218 \| 2022 \| 2022ApJ...933..218B \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...933..218B The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions \|Pan, Zeyang, Qu, Zhijie, et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez, Antonio C., \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R
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 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	2019-01-30T23:00:00Z
Keywords	"primary source", "ultra diffuse galaxy", "star formation", "3e8 msun", "hot gas", "1e12 msun", "star formation rate", "globular clusters", "stripped satellite", "central galaxy", "stellar mass", "somehow lost", "dynamical mass"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Mr Edmund Hodges-Kluck, 2019, 'Dragonfly 44 and the Nature of Ultra-Diffuse Galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yz5tufm