Massive stars exploding in a He-rich circumstellar medium - II. The transitional case of SN 2005la
Massive stars exploding in a He-rich circumstellar medium - II. The transitional case of SN 2005la
We present photometric and spectroscopic data of the peculiar SN 2005la, an object which shows an optical light curve with some luminosity fluctuations and spectra with comparably strong narrow hydrogen and helium lines, probably of circumstellar nature. The increasing full-width-half-maximum velocity of these lines is indicative of an acceleration of …