The X-ray emission from Z Canis Majoris during an FUor-like outburst and the detection of its X-ray jet

DSpace/Manakin Repository

aaK citaci nebo jako odkaz na tento záznam použijte identifikátor:

Show simple item record Stelzer, Beate Hubrig, Swetlana Orlando, Salvatore Micela, Giusi Mikulášek, Zdeněk Schöller, Marcus 2009-07-03T10:34:55Z 2009-07-03T10:34:55Z 2009
dc.identifier.citation Astronomy & astrophysics. 2009, vol. 499, no. 2, p. 529-533. en
dc.identifier.issn 0004-6361
dc.identifier.issn 1432-0746
dc.description.abstract Accretion shocks have been recognized as an important X-ray emission mechanism for pre-main sequence stars, and yet the X-ray properties of FUor outbursts, events that are caused by violent accretion, have been given little attention. We observed the FUor object Z CMa during optical outburst and quiescence with Chandra. No significant changes in X-ray brightness and spectral shape were found, suggesting that the X-ray emission is coronal. The binary nature of Z CMa makes the origin of the X-ray source ambiguous. However, the moderate hydrogen column density derived from our data makes it unlikely that the embedded primary star is the X-ray source. The secondary star, which is the FUor object, is thus responsible for both the X-ray emission and the ongoing accretion outburst, which seem, however, to be unrelated phenomena. The secondary is also known to drive a large outflow and jet, which we detect here for the first time in X-rays. The distance of the X-ray emitting outflow source to the central star is greater than in jets of low-mass stars. en
dc.language.iso en en
dc.publisher EDP Sciences en
dc.relation.ispartofseries Astronomy & astrophysics en
dc.relation.uri en
dc.subject X-rays: stars en
dc.subject accretion en
dc.subject accretion disks en
dc.subject stars: pre-main sequence en
dc.subject stars: variables: general en
dc.subject stars: activity en
dc.subject stars: winds en
dc.subject outflows en
dc.title The X-ray emission from Z Canis Majoris during an FUor-like outburst and the detection of its X-ray jet en
dc.type article en
dc.identifier.location Není ve fondu ÚK en
dc.identifier.doi 10.1051/0004-6361/200911750
dc.identifier.wos 000266730500017

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search



My Account