Two Rare Magnetic Cataclysmic Variables with Extreme Cyclotron Features Identified in the Sloan Digital Sky Survey | Zendy

Paula Szkody | Zendy; Scott F. Anderson | Zendy; Gary D. Schmidt | Zendy; Patrick B. Hall | Zendy; B. Margon | Zendy; A. Miceli | Zendy; Mark SubbaRao | Zendy; James Frith | Zendy; Hugh C. Harris | Zendy; Suzanne L. Hawley | Zendy; B. Lawton | Zendy; R. Covarrubias | Zendy; Kevin R. Covey | Zendy; Xiaohui Fan | Zendy; Thomas Murphy | Zendy; Vijay K. Narayanan | Zendy; Sean N. Raymond | Zendy; A. Rest | Zendy; Michael A. Strauss | Zendy; C. W. Stubbs | Zendy; Edwin L. Turner | Zendy; W. Voges | Zendy; A. Bauer | Zendy; J. Brinkmann | Zendy; G. R. Knapp | Zendy; Donald P. Schneider | Zendy

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Two Rare Magnetic Cataclysmic Variables with Extreme Cyclotron Features Identified in the Sloan Digital Sky Survey

Author(s) -

Paula Szkody,

Scott F. Anderson,

Gary D. Schmidt,

Patrick B. Hall,

B. Margon,

A. Miceli,

Mark SubbaRao,

James Frith,

Hugh C. Harris,

Suzanne L. Hawley,

B. Lawton,

R. Covarrubias,

Kevin R. Covey,

Xiaohui Fan,

Thomas Murphy,

Vijay K. Narayanan,

Sean N. Raymond,

A. Rest,

Michael A. Strauss,

C. W. Stubbs,

Edwin L. Turner,

W. Voges,

A. Bauer,

J. Brinkmann,

G. R. Knapp,

Donald P. Schneider

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/345418

Subject(s) - sky , physics , cyclotron , astrophysics , accretion (finance) , magnetic field , cataclysmic variable star , spectral line , intermediate polar , accretion disc , amplitude , astronomy , white dwarf , stars , optics , quantum mechanics

Two newly identified magnetic cataclysmic variables discovered in the SloanDigital Sky Survey (SDSS), SDSSJ155331.12+551614.5 and SDSSJ132411.57+032050.5,have spectra showing highly prominent, narrow, strongly polarized cyclotronhumps with amplitudes that vary on orbital periods of 4.39 and 2.6 hrs,respectively. In the former, the spacing of the humps indicates the 3rd and 4thharmonics in a magnetic field of ~60 MG. The narrowness of the cyclotronfeatures and the lack of strong emission lines imply very low temperatureplasmas and very low accretion rates, so that the accreting area is heated byparticle collisions rather than accretion shocks. The detection of rare systemslike these exemplifies the ability of the SDSS to find the lowest accretionrate close binaries.Comment: Accepted for publication in the Astrophysical Journal, vol. 583, February 1, 2003; slight revisions and additions in response to referee's comments; 17 pages, 6 figures, AASTeX v4.

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