Characterization of new hard X-ray cataclysmic variables

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Table 2

Timing properties of the source sample.

Source					/
	s	s	h	h		s	s	h	h

IGR J0839	1480.8 ± 0.5	–	–	–		1480 ± 13	1560 ± 7	8 ± 1.0^a	8 ± 1
IGR J1830	1820 ± 2	2400 ± 19 (ω − 2Ω)	4.2 ± 0.2	–	2.6	–	–	–	4.2 ± 0.2
IGR J16500^b	571.9 ± 0.5	–	–	–	–	–	–	3.617 ± 0.003 [1]	3.617 ± 0.003
IGR J1817	831.7 ± 0.7 (2ω)	810 ± 1.0 (2(ω + Ω))	8.5 ± 0.2	6.6 ± 0.3 (3.41)^c	2.5	1690 ± 18	–	–	6.3–8.7
IGR J1719^d	1062 ± 2	1163 ± 4 (ω − Ω)	3.2 ± 0.8	–	1.4	–	1102 ± 4	4.005 ± 0.006 [1]	4.005 ± 0.006
V2069 Cyg	743.1 ± 0.6	–	–	–	–	751 ± 5	–	7.48039 ± 0.00005 [2]	7.48039 ± 0.00005
RX J0636^e	920 ± 1	952 ± 4 (ω − Ω)	7.6 ± 0.9	(3.00)^c,^f	1.4	–	–	~3.4 [3]	≳ 5
		1016 ± 5 (ω − 2Ω)	5.4 ± 0.5		1.9
IGR J1509^g	808.7 ± 0.1	842.4 ± 0.6 (ω − Ω)	5.66 ± 0.08	–	1.4	814 ± 1	–	5.89 ± 0.01 [1]	5.89 ± 0.01
		412.7 ± 0.5 (2ω − Ω)	5.6 ± 0.3	–	2.4	–	–
XSS J0056^h	470.1 ± 0.2	454.2 ± 0.7 (ω + Ω)	3.7 ± 0.2	4.1 ± 0.4 (4.21)^c	2.6	474 ± 2	–	2.624 ± 0.001 [4]	2.624 ± 0.001
			2.52 ± 0.08ⁱ

Notes. From left to right: (X-ray main (spin) period); (X-ray sidebands); (orbital period derived from X-ray sidebands); (orbital period derived from phase-fitting); / (spin to sideband amplitude ratio); optical spin period from OM; (optical beat from OM); (optical spectroscopic period with its reference in parenthesis); (adopted orbital period in this work).

^(a)

Orbital period from OM photometric periods.

^(b)

Ground based photometric optical pulse at 597.92 ± 0.04 s [1].

^(c)

Detection significance is reported in parenthesis in unity of σ.

^(d)

Ground based photometric optical pulse at 1139.55 ± 0.04 s and weaker signal at ~ 1055 s [1].

^(e)

Ground based photometric optical pulse at 1008.341 ± 0.002 s and weaker signal at 930.583 ± 0.004 s [3].

^(f)

Since the total exposure is ~8 h, we here give the uncertainty at 3σ c.l.

^(g)

Beat period from 3(ω − Ω). Amplitude ratio refers to 3ω and 3(ω − Ω). Ground based photometric optical pulse at 809.42 ± 0.02 s [1].

^(h)

OM B band pulses derived from third and fifth segment. Ground based photometric optical pulse at 470.40 ± 0.03 s [5].

⁽ⁱ⁾

Orbital period from X-ray light curve.

References. [1] Pretorius (2009); [2] Thorstensen et al. (2001); [3] Gänsicke et al. (2005); [4] Bonnet-Bidaud et al. (2009); [5] de Martino et al. (priv. comm.)

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