A dataset provided by the European Space Agency

Name 069103
Title Constraining Star Formation: Low Mass Companions of 5 Msun Stars


DOI https://doi.org/10.5270/esa-alnrnqb
Author Dr Nancy Remage Evans
Description Creating a binary-multiple system during star formation is an effective way to manipulate angular momentum, an important ingredient in the process, leaving binary parameters as a fingerprint. We have surveyed 69 Cepheids with the Hubble Space Telescope Wide Field Camera 3 (WFC3) survey, and identified 39 possible low-mass companions to these 5 Msun supergiants, which have the surprising characteristic that there are approximately as many F-G dwarfs as K dwarfs. X-rays are the key to determining whether they are physical companions or chance alignments, and this proposal is a pilot X-ray project to identify genuine companions to test this.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-09-12T06:52:49Z/2013-04-26T11:32:01Z
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 2014-05-11T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2014, 069103, 17.56_20190403_1200. https://doi.org/10.5270/esa-alnrnqb