SIMBAD references

2010A&A...519A..86I - Astronomy and Astrophysics, volume 519, A86-86 (2010/9-1)

Search for broad absorption lines in spectra of stars in the field of supernova remnant RX J0852.0-4622 (Vela Jr.).

IYUDIN A.F., PAKHOMOV Y.V., CHUGAI N.N., GREINER J., AXELSSON M., LARSSON S. and RYABCHIKOVA T.A.

Abstract (from CDS):

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 44Ti γ-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. Spectral synthesis is performed for all the stars in the wavelength range of 3740-4020Å to extract the broad absorption lines of CaII related to the SNR RX J0852.0-4622. We do not detect any broad absorption line and place a 3σ upper limit on the relative depths of <0.04 for the broad CaII absorption produced by the SNR. We detect narrow low and high velocity absorption components of CaII. High velocity |VLSR|∼100-140km/s 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 44Ti γ-ray line 1.16MeV lead us to conclude that SNR RX J0852.0-4622 was probably produced by an energetic SN Ic explosion.

Abstract Copyright:

Journal keyword(s): line: formation - stars: fundamental parameters - stars: distances - ISM: supernova remnants - supernovae: general - supernova: individual: RX J0852.0-4622

Simbad objects: 23

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2023.02.02-00:18:23

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