Optical spectroscopy of MT Dra in 2006 and 2009
A.M. Zubareva (1, 2), V.V. Shimansky (3), N.V. Borisov (4), A.F., Valeev (4) ((1) Institute of Astronomy, Russia, (2) Sternberg Astronomical, Institute, Russia, (3) Kazan Federal University, (4) Special Astrophysical, Observatory, Russia)
TL;DR
This paper presents phase-resolved optical spectra of the polar MT Dra during high states in 2006 and 2009, revealing complex emission line profiles and gas motions near the white dwarf's magnetic poles.
Contribution
It provides new low-resolution spectral data of MT Dra during high states, illustrating emission line behavior and gas dynamics close to the magnetic poles.
Findings
Emission lines show complex shapes and profile variations.
Radial velocities vary with orbital period.
Gas motions indicate accretion near magnetic poles.
Abstract
We present low-resolution phase-resolved spectra of the polar MT Dra during its high states in 2006 and 2009. Balmer series, He I and He II 4686 \AA\ emission lines have complex shapes and show similar profile variations over an orbital cycle. The radial velocities vary with orbital period and display motions of the gas falling close to the magnetic poles of the white dwarf.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAstrophysics and Star Formation Studies · Stellar, planetary, and galactic studies · High-pressure geophysics and materials