A dataset provided by the European Space Agency

Name: An X-ray Tail in the NGC 1407 Group
Published: 2008-04-03T00:00:00Z

Proposal ID	040475
Title	An X-ray Tail in the NGC 1407 Group
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404750101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404750201
DOI	https://doi.org/10.5270/esa-rrbnj56
Principal Investigator, PI	Dr R. Brent Tully
Abstract	The nearby NGC 1407 Group shares properties with so-called fossil groups. andpresents a possibility to study a representative of this interesting class withhigh spatial resolution. The elliptical NGC 1407 dominates a group that has fewintermediate luminosity galaxies, but a large entourage of dwarfs. The velocitydispersion of this group is 387 km/s, whence M/L_R = 340 M_sun/L_sun. The secondbrightest confirmed member, NGC 1400, has an extraordinarily deviant velocity ofvirgul1000 km/s in the group frame. ROSAT data reveal an X-ray tail between NGC 1400and NGC 1407 with a highly unexpected peak on top of a dwarf member galaxy.Possible explanations include a Bondi-Hoyle wake, stripped gas from NGC 1400, orsomething more exotic.
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Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2007-02-11T08:50:27Z/2007-02-12T06:04:55Z
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	2008-04-03T00:00:00Z
Keywords	"NGC 1407", "stripped gas", "nearby ngc 1407", "387 km", "ngc 1407", "xray tail", "extraordinarily deviant velocity", "intermediate luminosity galaxy", "velocity dispersion", "ngc 1400", "shares properties", "spatial resolution", "rosat data", "340 m_sun", "ROSAT", "bondi hoyle wake"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr R. Brent Tully, 2008, 'An X-ray Tail in the NGC 1407 Group', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rrbnj56