IR photometry and polarimetry of 2A0311-227

J. Bailey; J. H. Hough; D. J. Axon

doi:10.1038/285306a0

IR photometry and polarimetry of 2A0311-227

J. Bailey^*, J. H. Hough, D. J. Axon

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The X-ray source 2A0311 - 227 has recently been identified with a star whose spectrum¹ and polarization properties ² show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronously rotating magnetic white dwarf, with a surface field of ∼ 10⁸G, accreting matter from a cooler companion star³. The highly circularly polarized radiation emitted by these systems is thought to be due to cyclotron radiation originating in an accretion column at one or both poles of the white dwarf. We describe here IR light curves of 2A0311 - 227 at 1.25 and 2.2μm, together with circular polarimetry at 1.25μm. The light curves show a deep narrow minimum which does not have an optical counterpart, and the 1.25μm polarimetry shows circular polarization which is much lower than that in the optical.

Original language	English
Pages (from-to)	306-308
Number of pages	3
Journal	Nature
Volume	285
Issue number	5763
DOIs	https://doi.org/10.1038/285306a0
Publication status	Published - 1980

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title = "IR photometry and polarimetry of 2A0311-227",

abstract = "The X-ray source 2A0311 - 227 has recently been identified with a star whose spectrum1 and polarization properties 2 show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronously rotating magnetic white dwarf, with a surface field of ∼ 108G, accreting matter from a cooler companion star3. The highly circularly polarized radiation emitted by these systems is thought to be due to cyclotron radiation originating in an accretion column at one or both poles of the white dwarf. We describe here IR light curves of 2A0311 - 227 at 1.25 and 2.2μm, together with circular polarimetry at 1.25μm. The light curves show a deep narrow minimum which does not have an optical counterpart, and the 1.25μm polarimetry shows circular polarization which is much lower than that in the optical.",

author = "J. Bailey and Hough, {J. H.} and Axon, {D. J.}",

year = "1980",

doi = "10.1038/285306a0",

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journal = "Nature",

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T1 - IR photometry and polarimetry of 2A0311-227

AU - Bailey, J.

AU - Hough, J. H.

AU - Axon, D. J.

PY - 1980

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N2 - The X-ray source 2A0311 - 227 has recently been identified with a star whose spectrum1 and polarization properties 2 show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronously rotating magnetic white dwarf, with a surface field of ∼ 108G, accreting matter from a cooler companion star3. The highly circularly polarized radiation emitted by these systems is thought to be due to cyclotron radiation originating in an accretion column at one or both poles of the white dwarf. We describe here IR light curves of 2A0311 - 227 at 1.25 and 2.2μm, together with circular polarimetry at 1.25μm. The light curves show a deep narrow minimum which does not have an optical counterpart, and the 1.25μm polarimetry shows circular polarization which is much lower than that in the optical.

AB - The X-ray source 2A0311 - 227 has recently been identified with a star whose spectrum1 and polarization properties 2 show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronously rotating magnetic white dwarf, with a surface field of ∼ 108G, accreting matter from a cooler companion star3. The highly circularly polarized radiation emitted by these systems is thought to be due to cyclotron radiation originating in an accretion column at one or both poles of the white dwarf. We describe here IR light curves of 2A0311 - 227 at 1.25 and 2.2μm, together with circular polarimetry at 1.25μm. The light curves show a deep narrow minimum which does not have an optical counterpart, and the 1.25μm polarimetry shows circular polarization which is much lower than that in the optical.

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JO - Nature

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SN - 1476-4687

IS - 5763

ER -

IR photometry and polarimetry of 2A0311-227

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