On the peculiar spectrum of the optical remnant of supernova A.D. 1006

Abstract

view Abstract Citations (42) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the peculiar spectrum of the optical remnant of supernova A.D. 1006. Schweizer, F. ; Lasker, B. M. Abstract Three spectral records of the faint optical filaments in the remnant of SN 1006 show a nearly pure Balmer emission-line spectrum; the usual forbidden lines of O I, O II, O III, N II, and S II are either very weak or absent. No explanation is offered for the peculiar spectrum, but it is noted that SNR 1006 is the second remnant (after Tycho's) known to have such a spectrum. To explain the Balmer decrement in terms of case B recombination requires the extinction to be AV = 3 + or - 1, of which only about 0.75 mag seems to be due to galactic foreground obscuration. The radial velocity of the filaments is nearly constant over 5 arcmin and surprisingly low, approximately -40 km/s relative to the LSR. The absence of further, similar filaments in a 3 x 3 deg field centered on the radio remnant supports van den Bergh's (1976) identification of the filaments with the optical remnant of SN 1006. Publication: The Astrophysical Journal Pub Date: November 1978 DOI: 10.1086/156596 Bibcode: 1978ApJ...226..167S Keywords: Astronomical Spectroscopy; Light Emission; Line Spectra; Nebulae; Supernova Remnants; Balmer Series; Filaments; H Lines; Image Tubes; Radial Velocity; Visual Photometry; Astrophysics; Spectra:Supernova Remnants full text sources ADS | data products SIMBAD (2)