A dataset provided by the European Space Agency

Name 060283
Title Age-dating primary stars in a wide pair with ultracool dwarfs


DOI https://doi.org/10.5270/esa-bszbrun
Author Prof Frederick Walter
Description We have discovered 10 wide low mass companions to main sequence stars through a common proper motion search. We propose to obtain X-ray data of the primaries in order to constrain the ages of the systems. Ages are needed to constrain the masses of the low mass companions, and determine whether they are low mass stars or brown dwarfs. Only a small fraction of ultracool dwarfs are found as companions to main sequence stars. The 10 new systems targeted here will become benchmark sources with well-determined fundamental properties such as mass, age, and distance. X-ray luminosities of the primaries will allow us to constrain the ages. The properties of the low mass secondaries will provide vital information for models of brown dwarf and low mass star formation, atmospheres, and evolution.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-07-11T15:54:53Z/2010-01-04T04:47:32Z
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 2011-01-29T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2011-01-29T00:00:00Z, 060283, 17.56_20190403_1200. https://doi.org/10.5270/esa-bszbrun