Volume 407, Number 1, August III 2003
|Page(s)||249 - 257|
|Section||Interstellar and circumstellar matter|
|Published online||17 November 2003|
High resolution spectroscopy of Balmer-dominated shocks in the RCW 86, Kepler and SN 1006 supernova remnants*
Stockholm Observatory, Department of Astronomy, AlbaNova, 106 91 Stockholm, Sweden
2 Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Rd., Piscataway, NJ 08854-8019, USA
3 Visiting Astronomer, Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatories, CTIO is operated by AURA, Inc. under contract to the National Science Foundation
4 Cerro Tololo Inter-American Observatory, Casilla 603, Chile
Corresponding author: J. Sollerman, firstname.lastname@example.org
Accepted: 22 May 2003
We report results from high resolution optical spectroscopy of three non-radiative galactic supernova remnants, RCW 86, Kepler's supernova remnant and SN 1006. We have measured the narrow component Hα line widths in Balmer-dominated filaments in RCW 86 and SN 1006, as well as the narrow component width in a Balmer-dominated knot in Kepler's SNR. The narrow component line widths measured in RCW 86 and Kepler's SNR show FWHM of km s-1, similar to what has been seen in other Balmer-dominated remnants. Of the remnants in our sample, SN 1006 is the fastest shock (~3000 km s-1). The narrow component Hα and Hβ lines in this remnant have a FWHM of merely 21 km s-1. Comparing the narrow component widths measured in our sample with those measured in other remnants shows that the width of the narrow component does not correlate in a simple way with the shock velocity. The implications for the pre-heating mechanism responsible for the observed line widths are discussed.
Key words: ISM: supernova remnants / shock waves / ISM: individual objects: SN 1006 / ISM: individual objects: RCW 86 / ISM: individual objects: Kepler
© ESO, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.