A dataset provided by the European Space Agency

Name 076455
Title Origin of the X-ray emission in the He-rich luminous subdwarf BD +37 442
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0764550101

DOI https://doi.org/10.5270/esa-kx7p4f9
Author Dr Sandro MEREGHETTI
Description BD +37 442 is one of the very few hot subdwarf stars detected in the X-ray
range. The observed X-rays could arise either from accretion onto a neutron star
or white dwarf companion (as suggested by the possible presence of X-ray
pulsations at P=19.2 s) or from intrinsic emission of the hot subdwarf itself.
Both possibilities are interesting because they offer the possibility to
investigate the poorly known properties of radiation driven winds at the low
mass-loss rates present in hot subdwarfs. A new observation is required to
confirm or reject the pulsations and to better constrain the spectral
properties.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-02-01T02:33:38Z/2016-02-01T22:46:59Z
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 2017-02-16T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Sandro MEREGHETTI, 2017, 076455, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kx7p4f9