| Name | 040475 |
| Title | An X-ray Tail in the NGC 1407 Group |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404750101 |
| DOI | https://doi.org/10.5270/esa-rrbnj56 |
| Author | European Space Agency |
| Description | The nearby NGC 1407 Group shares properties with so-called .fossil groups. and presents a possibility to study a representative of this interesting class with high spatial resolution. The elliptical NGC 1407 dominates a group that has few intermediate luminosity galaxies, but a large entourage of dwarfs. The velocity dispersion of this group is 387 km/s, whence M/L_R = 340 M_sun/L_sun. The second brightest confirmed member, NGC 1400, has an extraordinarily deviant velocity of virgul1000 km/s in the group frame. ROSAT data reveal an X-ray tail between NGC 1400 and 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, or something more exotic. |
| Publication | No observations found associated with the current proposal |
| 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 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 | 2008-04-03T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2008, An X-Ray Tail In The Ngc 1407 Group, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rrbnj56 |