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Title:
Faint Object Spectrograph Spectra of the Broad Fe II Absorption Lines in the Remnant of SN 1006
Authors:
Wu, Chi-Chao; Crenshaw, D. Michael; Fesen, Robert A.; Hamilton, Andrew J. S.; Sarazin, Craig L.
Publication:
Astrophysical Journal v.416, p.247 (ApJ Homepage)
Publication Date:
10/1993
Origin:
APJ; KNUDSEN
Astronomy Keywords:
ISM: ABUNDANCES, ISM: SUPERNOVA REMNANTS, ISM: INDIVIDUAL ALPHANUMERIC: SN 1006
DOI:
10.1086/173230
Bibliographic Code:
1993ApJ...416..247W

Abstract

Ultraviolet spectra of a hot subdwarf star located behind the remnant of SN 1006 have been obtained with the Faint Object Spectrograph on the Hubble Space Telescope. The FOS UV spectra show strong and extremely broad Fe II lambda2343, lambda2374, lambda2382, lambda2586, and lambda2599 lines in absorption from the supernova remnant, confirming an earlier detection with the International Ultraviolet Explorer. The better resolution and signal-to-noise of the FOS spectra allow for the removal of narrow interstellar and stellar lines and the deblending of the broad Fe II lines, resulting in an intrinsic Fe II profile suitable for detailed comparison with model predictions.

The velocity profile of the ejecta is approximately symmetric around 0 km s-1 and extends up to ±8300 km s-1 at the continuum. The absorption-line width and angular size of the remnant yield a lower limit of 1.9 kpc to the distance of the remnant. The remnant contains approximately 0.014 Msun of Fe+.


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