The CMa R1 region includes the arc-shaped ionized nebula S2-296, suggested to bean old supernova remnant, as well as several very young (less than 5 Myr)clusters. Based on archival ROSAT observations covering nearly 5 sq. deg. wehave discovered a new, 10Myr old cluster that may be a fossil from a distinct,past star-formation episode, suggesting sequential star formation betweensupernova cavities. We propose a mosaic of 5 x 30ks EPIC fields to reveal amixed population from both older and young clusters corresponding respectivelyto a fossil, and to an onging, star formation episode.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2010-10-25T13:26:04Z/2011-04-11T22:10:19Z
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.
European Space Agency, Prof Jane Gregorio-Hetem, 2012, 'Fossil sequential star formation in the CMa R1 regionquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-a0zqdgo
