The spectroscopic evolution of the recurrent nova T Pyxidis during its 2011 outburst. I. The optically thick phase and the origin of moving lines in novae
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il 30 Ago 2011 alle 01:35
in Pubblicazioni
<BR /> Aims: We aim to derive the physical properties of the recurrent nova T Pyx and the structure of the ejecta during the early stages of expansion of the 2011 outburst. <BR /> Methods: The nova was observed with high resolution spectroscopy (R ≈ 65 000), from one day after discovery of the outburst and until the last visibility of the star at the end of May 2011. The interstellar absorption lines of Na I, Ca II, CH, CH<SUP>+</SUP>, and archival H I 21 cm emission line observations were used to determine a kinematical distance. Interstellar diffuse absorption features have been...
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