Change search
ReferencesLink to record
Permanent link

Direct link
Search for broad absorption lines in spectra of stars in the field of supernova remnant RX J0852.0-4622 (Vela Jr.)
Show others and affiliations
2010 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, ISSN 0004-6361, Vol. 519, no 9, A86- p.Article in journal (Refereed) Published
Abstract [en]

Aims. Supernova remnant (SNR) RX J0852.0-4622 is one of the youngest and is most likely the closest among known Galactic SNRs. It was detected in X-rays, the (44)Ti gamma-line, and radio. We obtain and analyze medium-resolution spectra of 14 stars in the direction towards the SNR RX J0852.0-4622 in an attempt to detect broad absorption lines of unshocked ejecta against background stars. Methods. Spectral synthesis is performed for all the stars in the wavelength range of 3740-4020 angstrom to extract the broad absorption lines of Ca II related to the SNR RX J0852.0-4622. Results. We do not detect any broad absorption line and place a 3 sigma upper limit on the relative depths of <0.04 for the broad Ca II absorption produced by the SNR. We detect narrow low and high velocity absorption components of Ca II. High velocity vertical bar V(LSR)vertical bar similar to 100-140 km s(-1) components are attributed to radiative shocks in clouds engulfed by the old Vela SNR. The upper limit to the absorption line strength combined with the width and flux of the (44)Ti gamma-ray line 1.16 MeV lead us to conclude that SNR RX J0852.0-4622 was probably produced by an energetic SN Ic explosion.

Place, publisher, year, edition, pages
2010. Vol. 519, no 9, A86- p.
Keyword [en]
ISM: supernova remnants, line: formation, stars: distances, stars: fundamental parameters, supernova: individual: RX J0852.0-4622, supernovae: general, Absorption, Calcium, Harmonic analysis, Spectroscopy, Stars, Atmospheric optics
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-84607DOI: 10.1051/0004-6361/201014031ISI: 000283297300086ScopusID: 2-s2.0-77957375662OAI: diva2:499419

QC 20120213

Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2014-04-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Iyudin, Anatoli F.Axelsson, Magnus
In the same journal
Astronomy and Astrophysics
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 36 hits
ReferencesLink to record
Permanent link

Direct link