Title:	Measuring the masses of Intermediate Polars with NuSTAR: V709 Cas, NY Lup and V1223 Sgr
Authors:	Shaw, A.W. Heinke, C.O. Mukai, K. Sivakoff, G.R. Tomsick, J.A. Rana, V.
Keywords:	accretion accretion discs novae cataclysmic variables, white dwarfs X-rays: binaries
Issue Date:	1-May-2018
Publisher:	Oxford University Press on behalf of the Royal Astronomical Society
Citation:	Monthly Notices of the Royal Astronomical Society, 2018, Vol. 476; p554–561
Abstract:	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 MWD=0.88+0.05−0.04M⊙, MWD=0.88−0.04+0.05M⊙, 1.16+0.04−0.02M⊙,1.16−0.02+0.04M⊙, 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.
Description:	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/6877
ISSN:	0035-8711 1365-2966 - (online)
Alternative Location:	http://adsabs.harvard.edu/abs/2018MNRAS.tmp..242S https://arxiv.org/abs/1801.08508 http://dx.doi.org/10.1093/mnras/sty246
Copyright:	2018, The Authours & Oxford University Press
Appears in Collections:	Research Papers (A&A)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.