X-ray spectroscopy of massive stellar winds: previous and ongoing observations of the hot star ζ Pup

Miller, Nathan; Waldron, Wayne; Nichols, Joy; Huenemoerder, David; Dahmer, Matthew; Ignace, Richard; Lauer, Jennifer; Moffat, Anthony; Nazé, Yaël; Oskinova, Lidia; Richardson, Noël; Ramiaramanantsoa, Tahina; Shenar, Tomer; Gayley, Kenneth

doi:10.1017/S1743921319001340

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X-ray spectroscopy of massive stellar winds: previous and ongoing observations of the hot star ζ Pup

Miller, Nathan; Waldron, Wayne; Nichols, Joy et al.

2019 • In Proceedings of the International Astronomical Union, Volume 346

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https://hdl.handle.net/2268/245956

DOI
10.1017/S1743921319001340

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Keywords :

stars: early-type; stars: mass loss; stars: winds; outflows; X-rays: stars

Abstract :

[en] The stellar winds of hot stars have an important impact on both stellar and galactic evolution, yet their structure and internal processes are not fully understood in detail. One of the best nearby laboratories for studying such massive stellar winds is the O4I(n)fp star ζ Pup. After briefly discussing existing X-ray observations from Chandra and XMM, we present a simulation of X-ray emission line profile measurements for the upcoming 840 kilosecond Chandra HETGS observation. This simulation indicates that the increased S/N of this new observation will allow several major steps forward in the understanding of massive stellar winds. By measuring X-ray emission line strengths and profiles, we should be able to differentiate between various stellar wind models and map the entire wind structure in temperature and density. This legacy X-ray spectrum of ζ Pup will be a useful benchmark for future X-ray missions.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Miller, Nathan; Department of Physics & Astronomy, University of Wisconsin-Eau Claire, 105 Garfield Avenue, Eau Claire, WI 54701, USA

Waldron, Wayne; Eureka Scientific, Inc., USA

Nichols, Joy; Harvard-Smithsonian Center for Astrophysics, USA

Huenemoerder, David; Massachusetts Institute of Technology, USA

Dahmer, Matthew; Northrop Grumman, USA

Ignace, Richard; East Tennessee State University, USA

Lauer, Jennifer; Harvard-Smithsonian Center for Astrophysics, USA

Moffat, Anthony; University of Montreal, Canada

Nazé, Yaël ; Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)

Oskinova, Lidia; University of Potsdam, Germany

More authors (4 more)

Language :

English

Title :

X-ray spectroscopy of massive stellar winds: previous and ongoing observations of the hot star ζ Pup

Publication date :

01 December 2019

Event name :

High-mass X-ray Binaries: Illuminating the Passage from Massive Binaries to Merging Compact Objects, IAUS 346

Event date :

27-31 Aout 2018

Audience :

International

Main work title :

Proceedings of the International Astronomical Union, Volume 346

Pages :

88-92

Additional URL :

https://ui.adsabs.harvard.edu/abs/2019IAUS..346...88M

Available on ORBi :

since 11 March 2020

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