IPs by Orbit/Spin Ratio

IPs

AE Aqr
FO Aqr
XY Ari
V405 Aur
HT Cam
MU Cam
DW Cnc
BG CMi
V709 Cas
V1025 Cen
TV Col
TX Col
UU Col
V2306 Cyg
YY Dra
PQ Gem
DQ Her
EX Hya
NY Lup
V2400 Oph
GK Per
AO Psc
WX Pyx
V1223 Sgr
V1062 Tau
EI UMa
IGR 00234
IGR 15094
IGR 17303
Swift J0732
RX J0704
RX J1803
RX J2133
XSS 00564

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IPs by Orbit/Spin Ratio

The orbital period (P_orb) to spin period (P_spin) ratio is an important diagnostic of the accretion mode. Therefore, the table below lists 33 of the 34 confirmed/ironclad IPs from IP catalog 2009a in decreasing order of P_orb/P_spin. WX Pyx is missing, because its orbital period is completely unknown. Note that there may still be dispute over a few aliases and a few identifications (such as fundamental vs. 1st harmonic discussion regarding the 71 s period of DQ Her).

	Star	P_orb/P_spin	P_orb (hrs)	P_spin (s)	F_{(2-10 keV)} (erg cm^-2s^-1)	Remarks
1	AE Aqr	1075.2884	9.87973	33.0767335	2.6x10^-12	Prop
2	GK Per	491.0440	47.9233	351.341	3.2x10^-11	Out
3	IGR J17303-0601	433.72	15.421	128	?	Dbl;qSoft;P
4	DQ Her	119.3804	4.646909	140.13080	?	Ecl
5	XY Ari	105.8327	6.0648	206.30	1.9x10^-11	Ecl;Dbl;Out
6	V709 Cas	61.4732	6.341	312.78	6.6x10^-11	Dbl
7	NY Lup	51.2	9.87	693.01	2.3x10^-11	qSoft
8	1RXS J213344.1+510725	45.3676	7.1935	570.8189	1.9x10^-11	qSoft;P
9	Swift J0732.5-1331	39.37	5.604	512.42	?
10	EI UMa	31.21	6.43	741.6	?
11	1RXS J070407.9+262501	30.0	4.0	480.7	?	qSoft
12	V405 Aur	27.3435	4.1628	545.4555	1.9x10^-11	Soft;Dbl;P
13	YY Dra	26.94	3.96	529.22	1.5x10^-11	Dbl;Out
14	IGR J15094-6649	26.1972	5.89	809.4	1.5x10^-11	Cmpl
15	IGR J00234+6141	25.77	4.033	563.5	?
16	PQ Gem	22.4299	5.192616	833.4139	2.3x10^-11 (0.2-10)	Soft;Cmpl;P
17	XSS J00564+4548	20.287	2.6244 ?	465.7	2.8x10^-11
18	V1223 Sgr	16.2535	3.36586	745.506	8.8x10^-11
19	AO Psc	16.0553	3.59105	805.203	4.1x10^-11
20	UU Col	14.36	3.45	863.5	?	Soft
21	MU Cam	14.3	4.72	1187.24	?	Soft
22	FO Aqr	13.9168	4.84944	1254.451	3.5x10^-11	gEcl;Cmpl;vDO
23	V2400 Oph	13.3	3.43	927.66	5.2x10^-11	D-less;qSoft;P
24	V2306 Cyg	13.22	5.387	1466.66	1.0x10^-11	Dbl
25	BG CMi	12.7446	3.233965	913.5066	2.3x10^-11	gEcl;P
26	TX Col	10.77	5.718	1911	1.5x10^-11	vDO
27	1RXS J180340.0+401214	10.426	4.402	1520	2.0x10^-12	qSoft
28	TV Col	10.34	5.48641	1910	5.4x10^-11	gEcl;PSH
29	HT Cam	10.0	1.43	515.06	?	Out
30	V1062 Tau	9.6	9.95	3726	2.3x10^-11
31	V1025 Cen	2.37	1.41	2146.59	1.4x10^-11
32	DW Cnc	2.23155	1.435063	2315.03
33	EX Hya	1.46593	1.637612	4021.62	8.7x10^-11	Ecl;Out

Keys to Comments:

Ecl: Eclipsing system.
gEcl: Grazing eclipser (eclipse of the outer disk).
D-less: Discless
vDO: Variable Disk Overflow.
Soft: Soft IP; qSoft: quasi-soft IP (BB temp~90 eV).
P: Polarized.
Dbl: 2 pulses per spin period.
Cmpl: Complex pulse profiles.
Out: Outbursts.
PSH: Permanent SuperHumps.
Prop: Propeller.

Please send your comments, suggestions etc. to Koji.Mukai@nasa.gov and/or Koji.Mukai@umbc.edu

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Last Updated: Wednesday, 17-Jun-2009 13:41:17 EDT

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IPs by Orbit/Spin Ratio