| Proposal ID | 086131 |
| Title | Canis Major the closest dwarf galaxy |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0861310101 |
| DOI | https://doi.org/10.57780/esa-1k7w68r |
| Principal Investigator, PI | Dr Sara Saeedi |
| Abstract | Weve 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 veryold and faint galaxies is very different from that in other Local Group galaxiesand is dominated by accreting white dwarfs (AWDs): at least four AWDs in theDraco dSph, one in Willman 1 dSph, and ten in the center of Sgr dSph. Opticaland infrared studies show that the closet dwarf galaxy, Canis Major (CMa), hasan old massive core mainly populated by red giant branch (RGBs) stars. Wepropose to observe the center of CMa dwarf galaxy, which have not been yetobserved in X- rays in order to analyse AWDs using X-ray and multi-wavelengthdata, and to perform a comparative study of the X-ray luminosity function of AWDs of dwarf galaxies. |
| Publications |
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| 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 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 | 2021-10-23T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "closest dwarf galaxy", "canis major cma", "dwarf galaxy", "draco dsph", "faint galaxy", "cma dwarf galaxy", "canis major", "sgr dsph", "analyse awds", "x rays", "xray population", "closet dwarf galaxy", "xray luminosity function", "multi wavelength data" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Sara Saeedi, 2021, 'Canis Major the closest dwarf galaxy', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-1k7w68r |