D. Vande Putte's research while affiliated with University of Sussex and other places

Publications (5)

Article
Full-text available
About 2% of the CVs in the Ritter & Kolb catalogue have mass estimates for their components that suggest that they are undergoing unstable mass transfer, contrary to the canonical model of the evolution of CVs. We have previously revised the mass values for three of them, and found them to be stable. We review the observations for the other nine an...
Article
Simultaneous spectroscopic and photometric observations of the Z Cam type dwarf nova SY Cancri were used to obtain absolute flux calibrations. A comparison of the photometric calibration with a wide-slit spectrophotometric calibration showed that either method is equally satisfactory. A radial velocity study of the secondary star, made using the fa...
Article
The secondary in cataclysmic variables (CV's) is usually detected by cross-correlation of the CV spectrum with that of a K or M dwarf template, to produce a radial velocity curve. Although this method has demonstrated its power, it has its limits in the case of noisy spectra, such as are found when the secondary is faint. A method of co-adding spec...
Article
The secondary in CVs is usually detected by correlation of the spectrum with that of a red dwarf template, to produce a radial velocity curve. This method has demonstrated its power, but has limits in case of noisy spectra, as in faint secondaries. To circumvent this difficulty, a method of co-adding spectra, called skew mapping, has been proposed...

Citations

... and how does the rate of radius change compare to the rate at which the Roche lobe radius is changing? The great majority of CVs have mass ratios that fall in the stable part of parameter space; those few that appear to lie in the unstable region have rather uncertain orbital parameters [75], and it is believed that all CVs are stable to mass transfer from the secondary star. ...
... Vande Putte et al. 2003, Smith et al. 2005. Our analysis compares a template M3V star spectrum with different Doppler-corrected averaged spectra created from our database. ...
... i Martin et al. (1989), Smak (2002), Marsh (1988), and Wood & Crawford (1986). j Diaz & Steiner (1991), Vande Putte et al. (2003, and Baptista et al. (1994). k Thorstensen (2000). ...