Neglected X-ray discovered polars - III. RX J0154.0–5947, RX J0600.5–2709, RX J0859.1+0537, RX J0953.1+1458, and RX J1002.2–1925

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Table 2.

Journal of X-ray observations (Cols. 1–6), interstellar extinction (Cols. 7–9), and the results of X-ray spectral fits with the sum of a multitemperature thermal component and a single-blackbody soft X-ray component with kT_bb1 (Cols. 10–12).

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)	(15)	(16)	(17)	(18)	(19)	(20)
Short	Start date	Instr.	Exp.	CR	HR1	N_H, gal	N_{H, E_B − V}	N_H, ad	kT_bb1	f_sX, bol	f_th, bol	f_cyc	L_sX	L_hX	L_cyc	R_L	Ṁ_X	Ṁ_X+cyc	M₁

name		state	(s)	(1 s⁻¹)		(10²⁰ H-atoms cm⁻²)			(eV)	(10⁻¹¹erg cm⁻² s)			(10³² erg s⁻¹)				(10⁻¹¹ M_⊙ yr⁻¹)		(M_⊙)
J0154	26 Nov 1990	RASS	hi	138	0.346	−0.78	1.96	1.0 (5)	1.0		3.82	0.25⁽¹⁾	0.50	1.76	0.23	0.46	2.55	2.3	2.9	0.75:
	1 Jul 1992	R P	in	5158	0.101	−0.57			1.0		0.76	0.20⁽¹⁾	0.10	0.35	0.18	0.10	1.27	0.6	0.7	0.75:
	3 Jan 1995	R H	hi	11248	0.080
	1 May 2002	X pn	lo	5040	0.005
J0600	10 Sep 1990	RASS	hi	574	0.520	−0.92	2.20	1.5 (5)	1.5		2.20⁽²⁾	0.20⁽²⁾	0.08	6.53⁽²⁾	1.19⁽²⁾	0.47⁽²⁾	3.93	9.1⁽²⁾	9.7⁽²⁾	0.75:
	12 Sep 1995	R H	lo	13474	0.002
J0859	28 Oct 1990	RASS	hi	368	0.300⁽³⁾	−0.86	3.79	3.1 (8)	2.8		3.26	0.19⁽¹⁾	0.50	2.79	0.33	0.86	2.36	5.4	6.9	0.61
	24 Apr 1996	R H	in	32846	0.022⁽³⁾
J0953	7 Nov 1990	RASS	hi	335	0.430⁽³⁾	−0.72	3.11	2.2 (6)	2.2		1.99	0.56⁽¹⁾	0.40	1.79	0.56	0.72	1.04	4.6	5.8	0.63
	31 May 1996	R H	in	4977	0.023⁽³⁾
J1002	22 Nov 1990	RASS	hi	474	0.690⁽³⁾	−0.97
	16vNov 1992	R P	lo	4192	−0.0002
	30 Nov 1993	R P	hi	1609	0.708⁽³⁾	−0.93	3.96	2.9 (9)	≳1.0	≲50	1.78⁽⁴⁾	0.22⁽⁴⁾	0.43⁽⁴⁾	5.07⁽⁴⁾	1.25⁽⁴⁾	2.46⁽⁴⁾	1.37	6.3⁽⁴⁾	8.7⁽⁴⁾	0.82
	4 Jun 1995	R H	hi	12474	0.120
	10 Dec 2001	X pn	in	3160			3.96	2.9 (9)	≳1.0	≳50	0.86⁽⁴⁾	0.27⁽⁴⁾	0.13⁽⁴⁾	2.45⁽⁴⁾	1.54⁽⁴⁾	0.74⁽⁴⁾	1.08	4.0⁽⁴⁾	4.7⁽⁴⁾	0.82
		X M	in	5820

Notes. The bolometric flux in Col. (11) is three times that of the single-blackbody fit (see Sect. 3.1). The cyclotron flux in Col. (13) is an estimate based on nonsimultaneous data. The luminosities in Cols. (14)–(16) are calculated with the Gaia distances in Table 1. The luminosity ratio in Col. (17) is R_L = L_sX/(L_hX + L_cyc). The blackbody temperatures in Col. (10) are quoted with errors. The errors are omitted for the derived parameters in Cols. (12)–(20). The accretion rates in Cols. (18) and (19) were calculated for the WD mass in Col. (20). Abbreviations: RASS = ROSAT All Sky Survey with the PSPC as detector, R = ROSAT pointed mode, X = XMM-Newton, P = PSPC as detector, H = HRI, pn = EPIC camera with pn as detector, M = MOS1&2, hi = high state, in = intermediate state, and lo = low state. Numbers in brackets indicate errors in the last digits. A colon indicates an uncertain value. (1) Fit with N_H,int = 0. (2) Lower limit based on d ≥ 813 pc. (3) Mean of bright phase. (4) Lower limits based on N_H ≥ 1.0 × 10²⁰ H-atoms cm⁻².

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