A dataset provided by the European Space Agency

Proposal ID 065245
Title Identity of Nuclear X-ray Sources in Bulge-less Galaxies
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0652450101

DOI https://doi.org/10.5270/esa-1rvee60
Principal Investigator, PI Prof Smita Mathur
Abstract We initiated a Chandra program to search for low-level nuclear activity in arepresentative sample of late-type galaxies within 20 Mpc. We propose XMM-Newtonobservations of two late-type galaxies, Scd and Sd, in both of which a nuclearX-ray source was detected with Chandra. X-ray spectra and optical-X-ray spectralenergy distributions obtained with XMM-Newton will secure the identification ofX-ray sources as either AGNs, low-mass X-ray binaries or star clusters.Discovering secure AGNs in these bulge-less galaxies will be exciting as it willimply that bulges are not necessary for existence of black holes. This will haveimportant consequences towards understanding the formation and co-evolution ofblack holes and galaxies.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2010-07-15T19:08:18Z/2010-07-16T16:40:58Z
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 2011-08-07T00:00:00Z
Keywords "discovering secure agns", "late type galaxy", "xray sources", "nuclear xray source", "XMM", "xmm newton", "co evolution", "chandra program", "star clusters", "XMM-Newton", "black holes", "xray spectra", "nuclear xray sources"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Smita Mathur, 2011, 'Identity of Nuclear X-ray Sources in Bulge-less Galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1rvee60