The Library
Measuring the rotational periods of isolated magnetic white dwarfs
Tools
Tools
Tools
Brinkworth, Carolyn S., Burleigh, Matthew R., Lawrie, Katherine, Marsh, Tom and Knigge, Christian (2013) Measuring the rotational periods of isolated magnetic white dwarfs. The Astrophysical Journal, Volume 773 (Number 1). p. 47. Article number 47. doi:10.1088/0004-637X/773/1/47 ISSN 0004-637X.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1088/0004-637X/773/1/47
Abstract
We present time-series photometry of 30 isolated magnetic white dwarfs, surveyed with the Jacobus Kapteyn Telescope between 2002 August and 2003 May. We find that 9 were untestable due to varying comparison stars, but of the remaining 21, 5 (24%) are variable with reliably derived periods, while a further 9 (43%) are seen to vary during our study, but we were unable to derive the period. We interpret the variability to be the result of rotation of the objects. We find no correlation between rotation period and mass, temperature, magnetic field, or age. We have found variability in 9 targets with low magnetic field strengths and temperatures low enough for partially convective atmospheres, which we highlight as candidates for polarimetry to search for starspots. Most interestingly, we have found variability in one target, PG1658+441, which has a fully radiative atmosphere in which conventional starspots cannot form, but a magnetic field strength that is too low to cause magnetic dichroism. The source of variability in this target remains a mystery.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | The Astrophysical Journal | ||||
| Publisher: | Institute of Physics Publishing, Inc. | ||||
| ISSN: | 0004-637X | ||||
| Official Date: | 10 August 2013 | ||||
| Dates: |
|
||||
| Volume: | Volume 773 | ||||
| Number: | Number 1 | ||||
| Page Range: | p. 47 | ||||
| Article Number: | Article number 47 | ||||
| DOI: | 10.1088/0004-637X/773/1/47 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
