A dataset provided by the European Space Agency

Name 060468
Title Age determination of common proper motion pairs: constraining the IFMR


DOI https://doi.org/10.5270/esa-c9k2lf5
Author Dr Gloria Sala
Description The initial-final mass relationship (IFMR) of white dwarfs is of paramount importance in modern astrophysics. To improve the IFMR, we use common proper motion pairs (CPMPs) to derive a semi-empirical relation. Recently we have acquired spectroscopy of both the WDs and companions of a selected sample of 10 CPMPs. The age of some evolved companions has been determined by isochrone fitting, but this method is not valid for stars too close to the ZAMS. An alternative age indicator is the X-ray luminosity, which for GKM stars follows a relation with the age (Ribas et al. 2008). Four sources of our sample still lack an age determination, and render our spectroscopic data useless to constrain the IFMR. We propose to observe with XMM two of those PCMP to determine their age.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-10-28T02:05:02Z/2009-10-28T11:12:30Z
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 2010-11-25T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-11-25T00:00:00Z, 060468, 17.56_20190403_1200. https://doi.org/10.5270/esa-c9k2lf5