A dataset provided by the European Space Agency

Name 086131
Title Canis Major the closest dwarf galaxy


DOI https://doi.org/10.57780/esa-1k7w68r
Author Dr Sara Saeedi
Description We.ve shown in our recent X-ray studies of the Draco, Willman 1, Sagittarius (Sgr) dwarf spheroidal galaxies (dSphs) that the X-ray population in these very old and faint galaxies is very different from that in other Local Group galaxies and is dominated by accreting white dwarfs (AWDs): at least four AWDs in the Draco dSph, one in Willman 1 dSph, and ten in the center of Sgr dSph. Optical and infrared studies show that the closet dwarf galaxy, Canis Major (CMa), has an old massive core mainly populated by red giant branch (RGBs) stars. We propose to observe the center of CMa dwarf galaxy, which have not been yet observed in X- rays in order to analyse AWDs using X-ray and multi-wavelength data, and to perform a comparative study of the X-ray luminosity function of AWDs of dwarf galaxies.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2020-09-30T16:36:22Z/2020-10-01T01:31:22Z
Version 18.02_20200221_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 2021-10-23T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2021, 086131, 18.02_20200221_1200. https://doi.org/10.57780/esa-1k7w68r