SIMBAD references

2012A&A...538A..22N - Astronomy and Astrophysics, volume 538A, 22-22 (2012/2-1)

A detailed X-ray investigation of ζ Puppis. I. The dataset and some preliminary results.


Abstract (from CDS):

One of the closest and brightest massive stars, ζ Puppis, was the first early-type object observed by the current generation of X-ray observatories. These observations provided some surprising results, partly confirming the theoretical predictions while simultaneously unveiling some problematic mismatches with expectations. In this series of papers, we perform a thorough study of ζPuppis in X-rays, using a decade of XMM-Newton observations. The star ζPuppis was observed 18 times by XMM-Newton, totaling 1 Ms in exposure. This provides the highest quality high-resolution X-ray spectrum of a massive star to date, as well as a perfect dataset for studying X-ray variability in an ``archetype'' object. This first paper reports on the data reduction of this unique dataset and provides a few preliminary results. On the one hand, analysis of EPIC low-resolution spectra shows the star to have a remarkably stable X-ray emission from one observation to the next. On the other hand, fitting by a wind model of individual line profiles recorded by RGS confirms the wavelength dependence of the line morphology.

Abstract Copyright:

Journal keyword(s): X-rays: stars - stars: early-type - stars: individual: ζ Puppis - stars: mass-loss

Simbad objects: 2

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