GT-zeta Ori, a late O type supergiant, is a strong X-ray source. The X-raysoriginate from shocks in the stellar wind. The observations will be used toestablish the physical conditions and elemental abundances in the shockedmaterial. With models of line transfer in moving atmospheres we will determinethe volume filling factor and depth distribution of the shocked gas pockets.This will help to constrain the still unknown mechanism that triggers theseshocks. zeta Ori will be in the RGS focus. The surrounding field is a starformation region with many X-ray sources. We will use the EPIC cameras to studythis complete field as well. The pn will be used in full window mode, one MOSwith window2 and the other MOS in timing mode. All EPICs will use the thick filter.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2002-09-15T13:12:07Z/2002-09-16T00:52:19Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Dr Albert Brinkman, 2003, 'GT Observations of Hot Stars: Zeta Ori', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-14fn2fw
