2001A&A...366.1016V


Query : 2001A&A...366.1016V

2001A&A...366.1016V - Astronomy and Astrophysics, volume 366, 1016-1034 (2001/2-2)

NaI and HI 3-D density distribution in the solar neighbourhood.

VERGELY J.-L., FREIRE FERRERO R., SIEBERT A. and VALETTE B.

Abstract (from CDS):

A study of the local interstellar medium (LISM) using a robust inversion method, similar to current tomography techniques, is applied to compiled data on neutral interstellar absorbers and Hipparcos parallaxes. We present here the 3-D distribution of two neutral species, NaI and HI. Our analysis enables us to obtain a reliable 3-D density distribution of the IS matter in the solar neighbourhood, providing a new basis for the discussion of origin, present state and evolution of the LISM. We show that neutral IS matter is distributed in compact clouds or in cloud complexes with cavities between them. It is now easy to distinguish the so-called Local Bubble and the Loop I cavities and also two tunnels linking the Local Bubble to the outer regions of the galaxy, away from the galactic plane. Better accuracy is achieved for NaI, as to a larger number of lines-of-sight and target stars than are available for HI. A rather detailed NaI 3-D density distribution is obtained with a 40 pc smoothing length. The extended high-density regions in the NaI and HI maps are correlated which is not the case for the diffuse regions. The density ratio ρHINaI is lower or equal to 9.1*108±3*108 for extended high density clouds.

Abstract Copyright:

Journal keyword(s): ISM: bubbles - ISM: clouds - Galaxy: solar neighbourhood - stars: distances - methods: statistical

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * lam Cas ** 00 31 46.3593467 +54 31 20.225689       6.25   B8Vn 132 0
2 * 42 Cas EB* 01 42 55.8618382880 +70 37 21.090017973   5.143 5.174     B9V 45 0
3 HD 21278 SB* 03 28 03.0722871396 +49 03 46.331543444   4.89 4.97     B5V 198 0
4 HD 23509 Ro* 03 41 29.8227365468 -66 28 37.884857890   8.05 7.75     A5V(m) 26 0
5 HD 23274 * 03 41 45.5511963134 -47 46 32.639930304   7.13 6.96     A4V 12 0
6 HD 26594 * 04 05 44.2799950360 -73 16 50.710127100   9.18 8.95     A4V 19 0
7 HD 35575 * 05 25 36.4986904596 -01 29 28.651977227   6.256 6.420     B5II/III 81 0
8 * bet CMa bC* 06 22 41.9853527 -17 57 21.307352 0.77 1.73 1.97 2.11 2.35 B1II-III 692 0
9 * eps CMa * 06 58 37.54876 -28 58 19.5102 0.36 1.29 1.50 1.59 1.80 B1.5II 467 1
10 * 24 Lyn PM* 07 43 00.4155061 +58 42 37.295002   5.024 4.947     A3IVn 71 0
11 NAME eta Car Cluster Cl* 10 45 03.0 -59 41 04           ~ 25 1
12 HD 101075 * 11 38 22.4896540263 +64 10 36.571325967   7.84 7.77     A0 15 0
13 HD 109401 PM* 12 34 20.1547178335 +10 55 15.965204310   7.95 7.58     A5 26 0
14 HD 124367 Be* 14 14 57.1404303053 -57 05 10.058117811 4.36 4.99 5.07     B4Vne 135 0
15 * c02 Cen * 14 44 59.2017716710 -35 11 30.575001422   4.927 4.924     A0IVnn 58 0
16 * eps Lup SB* 15 22 40.8682566 -44 41 22.614637 2.46 3.191 3.366     B2IV-V 161 0
17 HD 141569 Y*O 15 49 57.7484743862 -03 55 16.344023102 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 482 0
18 * b Sco * 15 50 58.7451174285 -25 45 04.662754169 3.84 4.552 4.635     B1.5Vn 274 0
19 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1177 1
20 HD 151749 * 16 47 37.7638790453 +37 33 36.800685572   7.13 7.17     B9 19 0
21 HD 154445 * 17 05 32.2588605026 -00 53 31.438713756 5.10 5.73 5.61 5.39 5.34 B1V 242 0
22 HD 155379 * 17 12 13.6197186499 -25 15 18.522516565   6.467 6.499     A0V 63 0
23 * alf Oph ** 17 34 56.06945 +12 33 36.1346 2.32 2.22 2.07 1.93 1.85 A5IVnn 452 0
24 * tet Sco * 17 37 19.12985 -42 59 52.1808   2.29 1.85     F1III 119 0
25 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12306 0
26 HD 167666 * 18 17 24.0865399657 -28 39 07.440700818   6.350 6.168     A5V 27 0
27 * 58 Aql * 19 54 44.7954348711 +00 16 25.053387202   5.703 5.631     B9IV 200 0
28 HD 203532 * 21 33 54.5737752124 -82 40 59.110819449 6.15 6.51 6.38     B3IV/V 88 0
29 * eps Cap Be* 21 37 04.8306787 -19 27 57.646354 3.69 4.35 4.55 4.60 4.74 B3V 243 0
30 HD 208886 Be* 21 59 55.5416442019 -31 31 32.651750541   6.98 7.06     B7Ve 36 0
31 NAME Local Bubble ISM ~ ~           ~ 739 0

    Equat.    Gal    SGal    Ecl

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2021.07.27-17:57:18

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