Spectropolarimetric observations of cool DQ white dwarfs
S V Berdyugina; T Vornanen; A Berdyugin
Spectropolarimetric observations of cool DQ white dwarfs
S V Berdyugina
T Vornanen
A Berdyugin
ESO
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042714695
https://urn.fi/URN:NBN:fi-fe2021042714695
Tiivistelmä
Following our recent discovery of a new magnetic DQ white dwarf (WD) with CH molecular features, we report the results for the rest of the DQ WDs from our survey. We use high signal-to-noise spectropolarimetric data to search for magnetic fields in a sample of 11 objects. One object in our sample, WD1235+422, shows the signs of continuum circular polarization that is similar to some peculiar DQs with unidentified molecular absorption bands, but the low S/N and spectral resolution of these data make more observations necessary to reveal the true nature of this object.
Kokoelmat
- Rinnakkaistallenteet [19207]