Quote:
Originally Posted by Merlin66
Based on my measures of the P Cygni profiles, I get 1796 Km/s at Ha, and 1789 Km/s at Hb. Seems consistant....say 1790 Km/s +/-
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Interesting. ATEL #5639 (
http://www.astronomerstelegram.org/?read=5639) showed up to ~ -1300 km/s and I get a figure consistent with that from Rogerio and Tasso's spectra, up to the point where their spectra lose the p cyg profile, see attached.
Is an acceleration here an expected part of the evolution?