Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1204.4267)
· On-line Data
· References in the article
· Citations to the Article (2) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (1)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Magnetometry of a sample of massive stars in Carina
Authors:
Nazé, Yaël.; Bagnulo, Stefano; Petit, Véronique; Rivinius, Thomas; Wade, Gregg; Rauw, Gregor; Gagné, Marc
Affiliation:
AA(GAPHE, Département AGO, Université de Liège, Allée du 6 Août 17, Bat. B5C, B4000 Liège, Belgium), AB(Armagh Observatory, College Hill, Armagh BT61 9DG), AC(Department of Geology & Astronomy, West Chester University, West Chester, PA 19383, USA), AD(ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Casilla 19001, Santiago 19, Chile), AE(Department of Physics, Royal Military College of Canada, PO Box 17000, Station Forces, Kingston, ON K7K 4B4, Canada), AF(GAPHE, Département AGO, Université de Liège, Allée du 6 Août 17, Bat. B5C, B4000 Liège, Belgium), AG(Department of Geology & Astronomy, West Chester University, West Chester, PA 19383, USA)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 423, Issue 4, pp. 3413-3419. (MNRAS Homepage)
Publication Date:
07/2012
Origin:
WILEY
Astronomy Keywords:
stars: early-type, stars: individual: Tr16-22, stars: individual: Tr16-13, stars: magnetic field, open clusters and associations: individual: Car OB1
Abstract Copyright:
© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS
DOI:
10.1111/j.1365-2966.2012.21134.x
Bibliographic Code:
2012MNRAS.423.3413N

Abstract

X-ray surveys of the Carina nebula have revealed a few hard and luminous sources associated with early-type stars. Such unusual characteristics for the high-energy emission may be related to magnetically confined winds. To search for the presence of magnetic fields in these objects, we performed a limited spectropolarimetric survey using the Focal reducer and low dispersion spectrograph (FORS) instrument. The multi-object mode was used, so that a total of 21 OB stars could be investigated during a one-night-long run. A magnetic field was detected in two objects of the sample, with a 6sigma significance: Tr16-22 and 13. Such a detection was expected for Tr16-22, as its X-ray emission is too bright, variable and hard, compared to other late-type O or O+OB systems. It is more surprising for Tr16-13, a poorly known star which so far has never shown any peculiar characteristics. Subsequent monitoring is now needed to ascertain the physical properties of these objects and enable a full modelling of their magnetic atmospheres and winds. Based on data collected at ESO under Program ID 386.D-0624A.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints