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Home All issues Volume 504 / No 2 (September III 2009) A&A, 504 2 (2009) 415-427 Full HTML
   

Table 1:

Observed and derived parameters for the 24 sources located in the region shown in Fig. 6 and observed in NH3 lines.
Source RA (J2000) Dec (J2000) Size $v_{\rm LSR}$ RG $D_{\rm near}$ $D_{\rm far}$ $F_{\rm peak}$ $F_{\rm int}$ $T_{\rm kin}$ $N({\rm H_2})$ $M_{\rm near}$ $M_{\rm far}$
      '' km s-1 kpc kpc kpc Jy/b. Jy K (1) $M_{\odot}$ $M_{\odot}$
G18.55+0.04 18 24 37.85 -12 45 14.8 36 $\times $ 24 36.3 5.6 3.1 13.0 0.92 2.8 21.0 2.1 140 2380
G18.61-0.07 18 25 08.42 -12 45 21.6 38 $\times $ 26 45.8 5.2 3.7 12.5 1.70 5.7 32.7(2) 2.2 210 2490
G18.63-0.07 18 25 09.84 -12 44 07.5 53 $\times $ 21 45.7 5.2 3.6 12.5 0.96 3.6 14.7 3.9 420 5010
G18.65-0.06 18 25 10.63 -12 42 24.1 43 $\times $ 25 44.6 5.2 3.7 12.5 2.25 8.1 18.3 6.4 680 7940
G18.66+0.04 18 24 50.98 -12 39 20.8 36 $\times $ 24 80.9 4.0 5.2 10.9 2.10 6.3 22.4 4.5 780 3510
G18.70+0.00 18 25 02.38 -12 38 12.6 46 $\times $ 34 80.3 4.0 5.1 11.0 0.84 4.5 14.8 3.4 1030 4770
G18.76+0.26 18 24 13.27 -12 27 44.6 59 $\times $ 42 20.8 6.6 2.0 14.1 1.14 9.7 15.8 4.1 320 15090
G18.79-0.29 18 26 15.53 -12 41 36.2 40 $\times $ 34 65.5 4.4 4.5 11.6 0.94 4.3 14.4 4.0 830 5360
G18.83-0.30 18 26 23.70 -12 39 38.9 37 $\times $ 28 63.5 4.6 4.4 11.7 1.35 4.8 -(3) 5.3 800 5610
G18.83-0.47 18 26 59.34 -12 44 46.5 34 $\times $ 32 63.3 4.5 4.5 11.6 1.50 5.7 18.9 4.1 680 4600
G18.83-0.49 18 27 03.57 -12 45 06.5 58 $\times $ 25 65.2 4.5 4.5 11.6 1.34 6.7 20.8 3.2 720 4640
G18.86-0.48 18 27 06.20 -12 43 09.3 38 $\times $ 23 65.4 4.4 4.6 11.5 0.73 2.1 18.8 2.0 270 1710
G18.88-0.49 18 27 09.21 -12 42 35.1 38 $\times $ 25 65.5 4.5 4.5 11.6 1.11 3.5 22.4 2.4 340 2210
G18.88-0.51 18 27 15.13 -12 42 54.6 52 $\times $ 29 66.2 4.4 4.6 11.5 0.62 3.2 23.6 1.2 290 1840
G18.89-0.47 18 27 07.82 -12 41 38.0 64 $\times $ 34 66.1 4.4 4.6 11.5 3.39 25.4 25.9 5.9 2040 12840
G18.89-0.64 18 27 43.46 -12 45 48.5 28 $\times $ 22 64.1 4.5 4.5 11.6 0.58 1.2 20.0 1.5 130 880
G18.91-0.63 18 27 43.55 -12 44 51.0 50 $\times $ 43 64.5 4.5 4.5 11.6 1.51 11.1 17.1 4.8 1560 10340
G18.93-0.01 18 25 32.35 -12 26 41.4 27 $\times $ 25 46.3 5.1 3.7 12.4 1.33 3.1 29.3 2.0 140 1530
G18.98-0.07 18 25 51.06 -12 25 42.5 26 $\times $ 18 61.8 4.6 4.4 11.7 0.82 1.3 20.4 2.0 140 960
G18.98-0.09 18 25 55.22 -12 25 50.3 30 $\times $ 19 63.0 4.5 4.4 11.6 0.64 1.3 20.7 1.5 130 900
G18.99-0.04 18 25 45.44 -12 23 54.0 38 $\times $ 32 59.8 4.7 4.3 11.8 0.31 1.3 20.7 0.7 120 930
G19.01-0.03 18 25 44.61 -12 22 42.0 40 $\times $ 34 59.8 4.7 4.3 11.8 2.18 10.1 19.5 5.7 1070 8000
G19.08-0.29 18 26 48.77 -12 26 20.7 39 $\times $ 37 66.0 4.6 4.3 11.7 4.28 21.4 24.2 8.2 1700 12330
G19.47+0.17 18 25 54.50 -11 52 34.4 33 $\times $ 24 20.0 6.6 2.0 14.0 6.53 18.0 23.4 13.1 330 15510
Notes: (1) unit of $N({\rm H_2})$ is 1022 cm-2; (2) this source was also observed in NH3 by Sridharan et al. (2005), with a better signal-to-noise ratio. We therefore use the kinetic temperature derived by this study rather than our own data for this source; (3) only the (1, 1) transition of NH3 is detected at this position, so that no kinetic temperature could be derived. A temperature of 15 K has been assumed to compute masses and column density for this source.
When the distance ambiguity could be solved, the preferred distance and mass are shown in boldface.

Source LaTeX | All tables | In the text

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