SIMBAD references

2018MNRAS.476..554S - Mon. Not. R. Astron. Soc., 476, 554-561 (2018/May-1)

Measuring the masses of intermediate polars with NuSTAR: V709 Cas, NY Lup, and V1223 Sgr.

SHAW A.W., HEINKE C.O., MUKAI K., SIVAKOFF G.R., TOMSICK J.A. and RANA V.

Abstract (from CDS):

The X-ray spectra of intermediate polars can be modelled to give a direct measurement of white dwarf mass. Here, we fit accretion column models to NuSTAR spectra of three intermediate polars; V709 Cas, NY Lup, and V1223 Sgr in order to determine their masses. From fits to 3-78 keV spectra, we find masses of M_ WD=0.88+0.05^–0.04 M☉, 1.16+0.04–0.02 M☉, and 0.75 ± 0.02 M☉ for V709 Cas, NY Lup, and V1223 Sgr, respectively. Our measurements are generally in agreement with those determined by previous surveys of intermediate polars, but with typically a factor ∼2 smaller uncertainties. This work paves the way for an approved NuSTAR Legacy Survey of white dwarf masses in intermediate polars.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - novae, cataclysmic variables - white dwarfs - X-rays: binaries

Simbad objects: 5

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