The Radial Velocity and Mass of the White Dwarf of EX Hydrae Measured withChandra | Zendy

R. Hoogerwerf | Zendy; N. S. Brickhouse | Zendy; C. W. Mauche | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The Radial Velocity and Mass of the White Dwarf of EX Hydrae Measured withChandra

Author(s) -

R. Hoogerwerf,

N. S. Brickhouse,

C. W. Mauche

Publication year - 2004

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 - 10.1086/421389

Subject(s) - physics , astrophysics , white dwarf , radial velocity , astronomy , telescope , orbital motion , amplitude , ultraviolet , proper motion , spectrometer , cataclysmic variable star , stars , optics , quantum mechanics , angular momentum

We present the first detection of orbital motion in the cataclysmic variableEX Hydrae based on X-ray data from the Chandra X-ray Observatory. The largecollecting area of the telescope and the high resolution of the HETGspectrometers allow for an unprecedented velocity accuracy of ~15 km/s in theX-ray wavelength regime. We find an emission line velocity amplitude of58.2+-3.7 km/s and infer a white dwarf mass of 0.49+-0.13 M_sun, in goodagreement with previous studies using optical, ultraviolet, and far ultravioletdata.Comment: 14 pages, 3 figues,accepted for publication by Ap

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research