A dataset provided by the European Space Agency

Name 014888
Title Elemental abundances in the corona of Gl355 (LQ Hya)
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148880101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148880301

DOI 10.5270/esa-5o72c97
Author Dr Stefano Covino
Description We propose to observe the very active BY Dra star Gl355 (LQ Hya). Our goal is to study the detailed individual elemental abundances in its corona. The XMM-Newton instruments are perfectly suitable for this purpose since its superior spectral resolution allows for abundance determinations of many individual elements. The metal abundances in the coronae of Gl355 will be compared element by element to the abundances in the photosphere previously obtained by high-resolution optical spectroscopy. Our aim is to better understand the physical mechanisms driving the lack of metallicity in the corona of some late-type active stars, such as Gl355, with respect to the photosphere.
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Automatic ...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-05-09T04:51:43Z/2003-11-22T12:49:59Z
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 2005-01-01T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2005-01-01T00:00:00Z, 014888, 17.56_20190403_1200. https://doi.org/10.5270/esa-5o72c97