Open AccessThe emission distribution in RR Pictoris
Author(s) -
Schmidtobreick L.,
Tappert C.,
Saviane I.
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06523.x
Subject(s) - physics , outflow , astrophysics , emission spectrum , accretion disc , doppler effect , accretion (finance) , astronomy , spectral line , meteorology
We present time‐resolved optical spectroscopy of the old nova RR Pic. Two emission lines (Hα and He i ) are present in the observed part of the spectrum and both show strong variability. Hα has been used for Doppler tomography in order to map the emission distribution in this system for the first time. The resulting map shows the emission from the disc as well as two additional emission sources on the leading and trailing sides of the disc. Furthermore, we find evidence for the presence of either a disc overflow or an asymmetric outflow from the binary with velocities up to ±1200 km s −1 . The origin of the outflow would be the emission source on the leading side of the accretion disc.