Pubblicazioni

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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

Scritto 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…

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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

Scritto il 19 Ago 2011 alle 01:35 in Pubblicazioni

The nova T Pyx was observed with high resolution spectroscopy (R ~
65000) spectroscopy, beginning 1 day after discovery of the outburst and
continuing through the last visibility of the star at the end of May
2011. The interstellar absorption lines of Na I, Ca II, CH, CH$^+$, and
archival H I 21 cm emission line observations have been used to
determine a kinematic distance. Interstellar diffuse absorption features
have been used to determine the extinction independent of previous
assumptions. Sample Fe-peak line profiles show the optical depth and
radial velocity evolution of the discrete…

continua