2006ApJ...650L..67M

Query : 2006ApJ...650L..67M

2006ApJ...650L..67M - Astrophys. J., 650, L67-L70 (2006/October-2)

A cold nearby cloud inside the Local Bubble.

MEYER D.M., LAUROESCH J.T., HEILES C., PEEK J.E.G. and ENGELHORN K.

Abstract (from CDS):

The high-latitude Galactic H I cloud toward the extragalactic radio source 3C 225 is characterized by very narrow 21 cm emission and absorption indicative of a very low H I spin temperature of about 20 K. Through high-resolution optical spectroscopy, we report the detection of strong, very narrow Na I absorption corresponding to this cloud toward a number of nearby stars. Assuming that the turbulent H I and Na I motions are similar, we derive a cloud temperature of 20+6–8K (in complete agreement with the 21 cm results) and a line-of-sight turbulent velocity of 0.37±0.08 km/s from a comparison of the H I and Na I absorption line widths. We also place a firm upper limit of 45 pc on the distance of the cloud, which situates it well inside the Local Bubble in this direction and makes it the nearest known cold diffuse cloud discovered to date.

Abstract Copyright: ∼

Journal keyword(s): ISM: Atoms - ISM: Clouds - ISM: Structure - Galaxy: Solar Neighborhood

Simbad objects: 39

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Number of rows : 39
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * 83 Cnc PM* 09 18 58.8555223728 +17 42 19.012491144 7.05 7.11 6.64 6.18 5.89 F5 107 0
2 HD 80510 * 09 20 38.1912840384 +17 07 38.430852168   8.12 7.76     F2 24 0
3 HD 80613 * 09 21 15.3464910984 +15 22 16.865808924   6.546 6.549     B9.5Vn 43 0
4 HD 80652 PM* 09 21 25.4892088728 +16 35 53.877410520   7.27 7.02     A5 25 0
5 * ksi Leo PM* 09 31 56.7409736040 +11 17 59.358476976   6.015 4.963     G9.5III 119 0
6 HD 82906 * 09 35 09.5017327176 +14 04 32.279263392   7.77 7.85     B9 27 0
7 * 7 Leo * 09 35 52.8836758368 +14 22 46.538150772   6.326 6.303     A1V 46 0
8 * 11 Leo PM* 09 38 01.2549007008 +14 20 50.271148428   7.057 6.614     F2 37 0
9 HD 83362 * 09 38 16.0587233064 +12 44 10.667286096 8.240 7.640 6.740     G8III 24 0
10 * 2 Sex PM* 09 38 27.2885284367 +04 38 57.453963996 7.45 6.00 4.68 3.62 2.91 K3III 119 0
11 HD 83509 SB* 09 39 17.2239004656 +13 18 45.242939016   7.491 7.021     F7V 53 0
12 HD 83683 PM* 09 40 35.2461031928 +13 03 13.621276525   7.424 6.943     F8 49 0
13 * omi Leo SB* 09 41 09.0321741326 +09 53 32.308426423 4.22 4.01 3.52 3.11 2.88 F8-G0III+A7m 163 0
14 [MMD97] 093925.20+140536.5 rG 09 42 08.47 +13 51 53.8   22       ~ 25 0
15 3C 225 rG 09 42 15.38702 +13 45 50.4653   19 20.0     ~ 147 2
16 HD 84183 PM* 09 43 35.2873490880 +10 31 07.933083492 7.650 7.540 7.000     F8V 35 0
17 HD 84182 PM* 09 43 36.4163627928 +13 26 31.277047380   8.27 7.08     K0 18 0
18 * psi Leo V* 09 43 43.9068253008 +14 01 18.131099484 8.93 6.98 5.35     M2III 74 0
19 * 18 Leo * 09 46 23.3273119968 +11 48 36.155648304   7.142 5.644     K4III 58 0
20 * 19 Leo ** 09 47 25.9647340 +11 34 05.397343   6.696 6.445     A7Vn 86 0
21 HD 84764 ** 09 47 41.2973250219 +10 23 05.754900139 8.130 8.030 7.810     A5 19 0
22 HD 84937 Pe* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 831 0
23 V* DY Leo RS* 09 49 48.5082773751 +11 06 23.144197832       7.2   F8 97 0
24 [V69] A HI 09 50 38 -10 22.1           ~ 6 0
25 * 21 Leo * 09 50 49.2675654576 +11 50 32.675849412   6.82 6.85     A0 30 0
26 HD 85269 * 09 50 56.8251245976 +10 52 56.967419604   8.40 8.28     A0 14 0
27 * 23 Leo * 09 51 01.9840280136 +13 03 58.460768316 9.970 8.030 6.450 10.9   M0III 47 0
28 * 10 Sex PM* 09 56 25.9751697696 +08 55 59.361113031   6.985 5.848     K2III: 33 0
29 * nu. Leo SB* 09 58 13.3753792440 +12 26 41.300627166 5.01 5.212 5.260     B6IV 84 0
30 * pi. Leo V* 10 00 12.8060146393 +08 02 39.190724909 8.22 6.30 4.70 3.27 2.19 M2-III 152 0
31 HD 87392 * 10 04 47.5335617760 +05 00 14.491881756   7.97 7.35     G0 30 0
32 * 14 Sex ** 10 06 47.4247307834 +05 36 41.373901776   7.130 6.187     K1III 48 0
33 * 31 Leo PM* 10 07 54.2701166766 +09 59 51.024749763 7.57 5.82 4.38 3.26 2.49 K3.5IIIbFe-1: 150 0
34 3C 237.0 rG 10 08 00.0529 +07 30 16.830   21       ~ 197 1
35 * 16 Sex * 10 09 14.8706760883 +06 10 15.237366354   7.93 6.58     K0 23 0
36 [V69] B HI 10 09 36 +04 53.2           ~ 5 0
37 HD 88315 PM* 10 11 06.1127122728 +05 15 08.066767356   8.33 7.25     K0 18 0
38 * 19 Sex PM* 10 12 48.3646193304 +04 36 52.837757280   6.957 5.781     K0III: 42 0
39 NAME Local Bubble ISM ~ ~           ~ 1059 0

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