X-ray monitoring of classical novae in the central region of M 31 - I. June 2006–March 2007

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Volume 523 (November-December 2010)

A&A, 523 (2010) A89

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Table 5

M 31 optical novae with XMM-Newton and Chandra counterparts discovered in this work.

Optical nova candidate			X-ray measurements

Name	RA (h:m:s)^a	MJD^b	D^c	Observation^d	Δt^e	L_X^f	Comment
M31N	Dec (d:m:s)^a	(d)	(″)	ID	(d)	(10³⁶ erg s^-1)

2001-01a	0:42:21.49	51 928.8		mrg (HRC-I)	1962.5	< 7.3
	41:07:47.4		2.5	mrg (EPIC)	1989.9	2.4 ± 0.5	SSS-HR
2005-02a	0:42:52.79	53 419.8	0.1	7283 (HRC-I)	471.5	13.2 ± 1.7	SSS
	41:14:28.9		0.1	0405320501 (EPIC)	498.9	17.6 ± 1.2
			0.4	0405320601 (EPIC)	536.8	28.4 ± 1.6
			0.4	7284 (HRC-I)	589.1	30.2 ± 2.8
			0.4	7285 (HRC-I)	632.5	56.4 ± 4.9
				7064 (ACIS-I)	654.2	18.9 ± 6.6
			1.2	0405320701 (EPIC)	680.9	20.3 ± 1.3
			1.1	0405320801 (EPIC)	696.7	18.6 ± 1.3
			0.8	0405320901 (EPIC)	716.4	8.9 ± 0.9
			0.6	7286 (HRC-I)	750.9	23.3 ± 3.9
2006-04a	0:43:13.42	53 851.2		7283 (HRC-I)	40.0	< 0.6
	41:16:58.9			0405320501 (EPIC)	67.4	< 0.3
			1.0	0405320601 (EPIC)	105.3	48.9 ± 2.0	SSS, short-term variable
				7284 (HRC-I)	157.6	< 2.0
				7285 (HRC-I)	201.0	< 7.0
				0405320701 (EPIC)	249.4	< 1.2
				0405320801 (EPIC)	265.2	< 0.5
				0405320901 (EPIC)	284.9	< 1.5
				7286 (HRC-I)	319.4	< 1.7
2006-06a	0:43:11.81	53 877.0		7283 (HRC-I)	14.3	< 0.7
	41:13:44.7			0405320501 (EPIC)	41.6	< 1.4
				0405320601 (EPIC)	79.5	< 1.5
			0.7	7284 (HRC-I)	131.9	7.5 ± 1.8	SSS candidate
			0.5	7285 (HRC-I)	175.3	10.3 ± 2.1
				0405320701 (EPIC)	223.6	< 1.8
				0405320801 (EPIC)	239.5	< 1.6
				0405320901 (EPIC)	259.2	< 1.7
				7286 (HRC-I)	293.6	< 6.2

Notes.

^(a)

RA, Dec are given in J2000.0;

^(b)

Modified Julian Date; MJD = JD–2 400 000.5;

^(c)

Distance in arcsec between optical and X-ray source;

^(d)

mrg (HRC-I/EPIC) indicates the merged data of all HRC-I/EPIC observations of the monitoring;

^(e)

Time after observed start of optical outburst;

^(f)

unabsorbed 3σ upper limits in 0.2–10.0 keV band assuming a 50 eV blackbody spectrum with Galactic foreground absorption.

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