id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
app01-2818	Ritter, H.; Kolb, U.	The Ritter-Kolb Catalogue and its Impact on Research into CVs, LMXBs and related Objects	2015	5	.pdf	application/pdf	3565	127	56	What this means is that now the contents of RKcat allows for statisti- cally meaningful studies of the properties of var- ious subsets of CVs, LMXBs or related objects, which because of too small numbers of objects had not been possible a decade or two ago. Around 1987, when the 4th edition of Rcat (Rit- ter 1987) was published it was also realized, not least thanks to X-ray observations with EXOSAT, that the distribution of the orbital periods of the synchronized and non-synchronized magnetic CVs, i.e. of the AM Her stars and the intermediate polars, are significantly dif- 22 The Ritter-Kolb Catalogue and its Impact on Research into CVs, LMXBs and related Objects ferent and that this could be accounted for in terms of standard CV evolution by the fact that on average the mass transfer rate in CVs decreases with orbital period (Hameury et al. 1987).	cache/app01-2818.pdf	txt/app01-2818.txt