We propose a deep EPIC survey of the open cluster NGC2547 to probe magneticdynamos and thoroughly characterise coronal emission from low-mass pre-mainsequence (PMS) stars at an accurately known age of 35Myr. By comparing the X-rayproperties (luminosities, temperatures, flare rates) of about 150 coeval PMSstars in NGC 2547 at masses above and below the fully convective boundary (downto substellar masses) and, by contrasting their coronal properties with stars inyounger and older clusters, we will test ideas that PMS magnetic activity isdriven by a different dynamo to that in older stars. Such observations arecrucial in establishing the intensity and duration of high energy irradiation ofthe circumstellar environments of young stars.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2007-11-12T21:47:06Z/2007-11-14T11:30:19Z
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, Dr Robin Jeffries, 2008, 'XMM-Newton observations of NGC 2547: Probing magnetic dynamos at 35Myr', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-j7prmuf
