Kinematic distinction of the two subpopulations of X-ray pulsars

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Table 1.

Galactic BeXRB pulsars.

Name	P_orb	P_s	GDR2 ID	d_lit	d_BJ	d_lit ref
	(d)	(s)		(kpc)	(kpc)
4U 0115+63	24.3	3.61	524677469790488960	5.3 ± 0.44		Coleiro & Chaty (2013)
V 0332+53	34.67	4.375	444752973131169664	6.9 ± 0.71		Coleiro & Chaty (2013)
GS 0834-430	105.8	12.3	5523448270462666880 ^(a)	3.0 < d < 5.0		Israel et al. (2000)
IGR J19294+1816	117.2	12.4	4323316622779495680	11.0 ± 1.0		Rodes-Roca et al. (2018)
XTE J1946+274	169.2	15.8	2028089540103670144	6.2 ± 3.0		Coleiro & Chaty (2013)
4U 1416-62	42.12	17.64	5854175187680510336 ^(b)	7.0 ± 0.74		Coleiro & Chaty (2013)
KS 1947+300	40.415	18.7	2031939548802102656	8.5 ± 2.3		Coleiro & Chaty (2013)
GS 1843+00		29.5	4278536022438800640	12.5 ± 2.5		Israel et al. (2001)
RX J0812.4-3114	81.3	31.8851	5548261400354128768	8.6 ± 1.8		Coleiro & Chaty (2013)
EXO 2030+375	46.016	42	2063791369815322752	3.1 ± 0.38		Coleiro & Chaty (2013)
IGR J22534+6243		46.67	2207277877757956352	4.0 < d < 5.0		Esposito et al. (2013)
AX J1700.2-4220	44.0	54	5966213219190201856	1.7 < d < 2.6		Negueruela & Schurch (2007)
Cep X-4		66.2	2178178409188167296	3.7 ± 0.52		Coleiro & Chaty (2013)
XTE J1906+090	26–30	89.17	4310649149314811776 ^(c)	d > 4		Göǧüş et al. (2005)
GRO J1008-57	249.46	93.6	5258414192353423360 ^(d)	4.1 ± 0.59		Coleiro & Chaty (2013)
3A 0535+262	111.1	103	3441207615229815040	3.8 ± 0.33		Coleiro & Chaty (2013)
4U 0728-25	34.5	103.2	5613494119544761088	5.0 ± 0.82		Coleiro & Chaty (2013)
2E 0655.8-0708	101.2	160.7	3052677318793446016	3.9 ± 0.1		McBride et al. (2006)
IGR J11435-6109	52.46	161.76	5335021664274920576	9.8 ± 0.86		Coleiro & Chaty (2013)
GRO J2058+42	55.03	198	2065653598916388352	9.0 ± 1.3		Wilson et al. (2005)
RX J0440.9+4431	155	202.5	252878401557369088	2.9 ± 0.37		Coleiro & Chaty (2013)
GX 304-1	132.5	272	5863533199843070208	1.3 ± 0.1		Coleiro & Chaty (2013)
4U 1145-619	187.5	292	5334823859608495104	4.3 ± 0.52		Coleiro & Chaty (2013)
SAX J2103.5+4545	12.68	358.6	2162805896614571904	8.0 ± 0.78		Coleiro & Chaty (2013)
1A 1118-615	24.0	406	5336957010898124160	3.2 ± 1.4		Coleiro & Chaty (2013)
IGR J01583+6713		469.2	518990967445248256	4.1 ± 0.63		Coleiro & Chaty (2013)
2RXP J130159.6-635806		700	5862285700835092352	4.0 < d < 7.0		Chernyakova et al. (2005)
4U 0352+309	250	835	168450545792009600	1.2 ± 0.16		Coleiro & Chaty (2013)
3U 1022-55		860	5352018121173519488	∼5		Motch et al. (1997)
SAX J2239.3+6116	262	1247	2201091578667140352	4.9 ± 0.8		Reig et al. (2017)
RX J0146.9+6121		1400	511220031584305536	2.3 ± 0.5		Reig et al. (1997)
4U 2206+543	9.57	5559	2005653524280214400	3.4 ± 0.35		Coleiro & Chaty (2013)
1H 1249-637		14200	6055103928246312960	0.392 ± 0.055		Megier et al. (2009)

Notes. Names, orbital periods (P_orb), and spin periods (P_s) are obtained from Liu et al. (2006) and Walter et al. (2015). GDR2 ID is the source id of the counterpart in GDR2. d_lit are the distances of the BeXRBs collected from the literature used to estimate the scale length (Sect. 2.2). The typical uncertainty for P_orb and P_s is < 1 d and ≪1 s, respectively (see references in Liu et al. 2006 and Walter et al. 2015), although higher errors may be present for higher P_orb and P_s values.

References. ^(a)Israel et al. (2000), ^(b) Grindlay et al. (1984), ^(c)Göǧüş et al. (2005), ^(d)Coe et al. (1994).

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