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Home All issues Volume 507 / No 1 (November III 2009) A&A, 507 1 (2009) L17-L20 Full HTML
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Table 1:

Compact radio-emitting sources in the central region of Arp 299-A.
Source Source $\Delta~\alpha^{{a}}$ $\Delta~\delta$ $S_\nu$($\mu $Jy)b $L_\nu$/1026 erg s-1 Hz-1 Vc
named type (J2000.0) (J2000.0) 8 Apr. 2008 5 Dec. 2008 8 Apr. 2008 5 Dec. 2008  
A0 SN 33.6212 46.707 318 $\pm$ 42 446 $\pm$ 33 7.9 $\pm$ 1.0 11.1 $\pm$ 0.8 2.4
A1 SNR 33.6199 46.699 855 $\pm$ 58 901 $\pm$ 51 21.3 $\pm$ 1.4 22.4 $\pm$ 1.3 0.6
A2 SNR 33.6219 46.655 708 $\pm$ 53 713 $\pm$ 43 17.6 $\pm$ 1.3 17.7 $\pm$ 1.1 0.1
A3 SNR 33.5942 46.560 398 $\pm$ 44 353 $\pm$ 30 9.9 $\pm$ 1.1 8.8 $\pm$ 0.7 0.8
A4 SNR 33.6501 46.537 558 $\pm$ 48 628 $\pm$ 40 13.9 $\pm$ 1.2 15.6 $\pm$ 1.0 1.1
A5 SN? 33.6176 46.693 278 $\pm$ 41 143 $\pm$ 25 6.9 $\pm$ 1.0 3.6 $\pm$ 0.6 2.8
A6 SN 33.6206 46.597 208 $\pm$ 40 $\leq$72 5.2 $\pm$ 1.0 $\leq$1.8 3.4
A7 SNR 33.6300 46.786 496 $\pm$ 46 468 $\pm$ 34 12.3 $\pm$ 1.2 11.6 $\pm$ 0.8 0.5
A8 SNR 33.6306 46.401 226 $\pm$ 41 264 $\pm$ 27 5.6 $\pm$ 1.0 6.6 $\pm$ 0.7 0.8
A9 SNR 33.6306 46.620 294 $\pm$ 42 282 $\pm$ 28 7.3 $\pm$ 1.0 7.0 $\pm$ 0.7 0.2
A10 SNR 33.6392 46.551 550 $\pm$ 48 436 $\pm$ 32 13.7 $\pm$ 1.2 10.9 $\pm$ 0.8 2.0
A11 SNR 33.6403 46.583 300 $\pm$ 42 351 $\pm$ 30 7.5 $\pm$ 1.0 8.7 $\pm$ 0.7 1.0
A12 SN 33.6495 46.590 449 $\pm$ 45 639 $\pm$ 40 11.2 $\pm$ 1.1 15.9 $\pm$ 1.0 3.2
A13 SN? 33.6531 46.733 251 $\pm$ 41 118 $\pm$ 25 6.2 $\pm$ 1.0 2.9 $\pm$ 0.6 2.8
A14 SNR 33.6825 46.571 292 $\pm$ 42 260 $\pm$ 27 7.3 $\pm$ 1.0 6.5 $\pm$ 0.7 0.6
A15 SN 33.5991 46.638 159 $\pm$ 40 304 $\pm$ 28 4.0 $\pm$ 1.0 7.6 $\pm$ 0.7 3.0
A16 uncl. 33.6149 46.516 $\leq$117 147 $\pm$ 25 $\leq$2.9 3.7 $\pm$ 0.6 1.2
A17 uncl. 33.6179 46.561 $\leq$117 179 $\pm$ 26 $\leq$2.9 4.5 $\pm$ 0.6 2.4
A18 uncl. 33.6192 46.464 151 $\pm$ 40 129 $\pm$ 25 3.8 $\pm$ 1.0 3.2 $\pm$ 0.6 0.5
A19 SN? 33.6196 46.659 $\leq$117 191 $\pm$ 26 $\leq$2.9 4.8 $\pm$ 0.6 2.8
A20 uncl. 33.6278 46.789 $\leq$117 146 $\pm$ 25 $\leq$2.9 3.6 $\pm$ 0.6 1.2
A21 uncl. 33.6291 46.836 $\leq$117 133 $\pm$ 25 $\leq$2.9 3.3 $\pm$ 0.6 0.6
A22 uncl. 33.6354 46.678 173 $\pm$ 40 217 $\pm$ 26 4.3 $\pm$ 1.0 5.4 $\pm$ 0.7 0.9
A23 uncl. 33.6360 46.560 $\leq$117 137 $\pm$ 25 $\leq$2.9 3.4 $\pm$ 0.6 0.8
A24 uncl. 33.6361 46.764 $\leq$117 166 $\pm$ 25 $\leq$2.9 4.1 $\pm$ 0.6 2.0
A25 SN? 33.6524 46.701 132 $\pm$ 40 209 $\pm$ 26 3.3 $\pm$ 1.0 5.2 $\pm$ 0.7 1.6

a Coordinates are given with respect to $\alpha$(J2000.0) = 11:28:00.0000 and $\delta$ (J2000.0) = 58:33:00.000, and were obtained from the 5 December 2008 image. The positions of those sources also detected in 8 April 2008 coincide within the errors ($\la$0.5 mas) with all of them.
b The uncertainty in the reported flux density for the detected compact components corresponds to 1$\sigma$, where $\sigma$was determined by adding in quadrature the off-source rms in each image and a 5% of the local maxima, to conservatively account for possible inaccuracies in the eEVN calibration.
c We define the significance of the flux density variability between the two consecutive epochs as $V = \mid S_{\rm Dec} - S_{\rm Apr}\mid / \sqrt{\sigma_{\rm Dec}^2+ \sigma_{\rm Apr}^2}$, where $S_{\rm Apr}$ and $\sigma_{\rm Apr}$ ( $S_{\rm Dec}$ and $\sigma_{\rm Dec}$) are the values in Cols. 5 and 6 (7 and 8), respectively.
d Source names are given in right ascension order, except for the five components reported previously (A0 through A4) by (Neff et al. 2004).


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