A dynamical explanation for a long-term modulation in the light curve of FS Aurigae - A possible triple cataclysmic variable system

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Table 2

Summary of periodicities detected in FS Aur.

Name/Acronym	Value	Source	Reference	Comments

Spin Period of WD (SP)	168−175	light curve	Neustroev et al. (2005)	inconclusive
Orbital Period (OP)	8579736	RV^a	Thorstensen et al. (1996)	firmly
	± 0.00004	core of H lines	unpublished data	established
Long Spectr. Period (LSP)	147^m	RV^b	Tovmassian et al. (2003)	beat between
		wings of H lines		OP and LPP
Long Phot. Period (LPP)	20545013	light curve	Tovmassian et al. (2003)	stable
	± 0.0006			over ~3000^d
Very Long Phot. Period (VLPP)	875^d ± 50^d	light curve	this work	based on ~5000^d coverage

Notes.

^(a)

Measured in the core of emission lines;

^(b)

measured in the extreme wings of emission lines.

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