2000MNRAS.317..996C

Query : 2000MNRAS.317..996C

2000MNRAS.317..996C - Mon. Not. R. Astron. Soc., 317, 996-1004 (2000/October-1)

A study of interstellar NaI D absorption lines towards the Lupus molecular clouds.

CRAWFORD I.A.

Abstract (from CDS):

Intermediate-resolution (60000≤R≤120000) observations of interstellar Nai lines towards 29 stars in the general direction of the Lupus molecular clouds (330°≲l≲350°; 0°≲b≲25°) are presented. Previously published spectra towards an additional seven stars are also included. Based on the Hipparcos distances to these stars, and the minimum distance at which strong interstellar Nai lines appear in the spectra, I obtain a distance of ∼150±10pc to the Lupus molecular complex. While in agreement with a number of other independent estimates, this result is at odds with the value of 100pc recently obtained by Knude & Høg from a Hipparcos-based study of interstellar extinction. A possible explanation for this discrepancy is discussed, and it is concluded that the value of 150±10pc obtained here is to be preferred. In addition, these observations have some other implications for the structure of the interstellar medium in this direction, and these are briefly considered.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): line: profiles - ISM: clouds - ISM: individual: Lupus - ISM: structure

Simbad objects: 42

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Number of rows : 42
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 HD 133716 * 15 07 06.2111762664 -37 56 44.370173328   7.24 7.17     A1V 23 0
2 HD 134685 * 15 12 19.5383626056 -34 58 03.703948392   7.79 7.67     A1V 28 0
3 * del Lup bC* 15 21 22.3138254072 -40 38 51.109328940 2.12 2.995 3.190     B1.5IV 230 0
4 * phi02 Lup * 15 23 09.3506362429 -36 51 30.557900083 3.77 4.39 4.54 4.60 4.74 B4V 139 0
5 HD 136961 * 15 24 41.8736604792 -35 55 01.491361536   6.81 6.75     A0/1V 27 0
6 HD 137169 * 15 26 00.8136888312 -40 32 41.010896472   9.12 8.98     A3III 20 0
7 HD 137432 SB* 15 27 18.1304610624 -36 46 03.214731900 4.69 5.30 5.45 5.54 5.71 B5V 102 0
8 HD 137957 * 15 30 48.4244007888 -45 25 27.887644776   7.51 7.44     A0V 31 0
9 HD 138138 ** 15 31 17.20862 -33 49 11.4308           A2/3V 41 0
10 * gam Lup ** 15 35 08.44835 -41 10 00.3247 1.76 2.586 2.765     B2IV 187 0
11 HD 139094 ** 15 37 06.8848382712 -26 29 32.583873336   7.46 7.38     B8IV/V 58 0
12 HD 139233 * 15 38 32.6385326520 -39 09 38.520773532   6.506 6.575     B9V 57 0
13 HD 139524 * 15 40 23.4940693392 -44 14 48.969288168   8.05 8.06     A0 18 0
14 * psi02 Lup SB* 15 42 41.0197420380 -34 42 37.467073334 4.08 4.576 4.721     B5V 122 0
15 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 320 0
16 HD 140475 ** 15 45 06.3663456576 -35 06 06.912949752   7.82 7.70     A2V 41 0
17 HD 140602 * 15 46 19.4302352136 -44 04 57.504883980   8.43 8.24     A3/4V 22 0
18 HD 140784 ** 15 46 44.2174303104 -34 40 56.830010556   5.481 5.600     B8V 63 0
19 HD 140817 ** 15 47 04.4561718672 -35 30 37.241353908   6.89 6.92     A0V 49 0
20 HD 141180 * 15 48 42.9020547096 -27 34 56.274034260   8.25 8.26     B9III 38 0
21 * b Sco * 15 50 58.7444628720 -25 45 04.658676984 3.84 4.552 4.635     B1.5Vn 305 0
22 HD 141905 * 15 53 02.7302125656 -39 53 37.313967768   8.52 8.30     A2Va+n 30 0
23 * 2 Sco ** 15 53 36.71880 -25 19 37.7087 3.86 4.52 4.59     B2.5Vn 169 0
24 HD 142201 * 15 54 43.9615406616 -40 09 09.974041920   10.67 10.55     B9III 8 0
25 HD 142431 * 15 56 05.1194372568 -40 42 17.141802804   7.16 7.05     A2V 22 0
26 * rho Sco SB* 15 56 53.0772000457 -29 12 50.667996815 2.84 3.66 3.86 3.97 4.17 B2IV-V 221 0
27 Lupus 2 MoC 15 57 08 -37 47.1           ~ 119 1
28 * eta Lup bC? 16 00 07.3279160436 -38 23 48.138224969 2.36 3.19 3.41     B2.5IV 186 0
29 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
30 HD 143699 * 16 03 24.1895252119 -38 36 09.141541952 4.18 4.75 4.89 4.96 5.10 B5/7III/IV 154 0
31 HD 143927 * 16 04 42.3235078752 -37 48 58.070789280   7.05 7.06     B8/9V 43 0
32 * tet Lup Pu* 16 06 35.5439828160 -36 48 08.173906632 3.36 4.027 4.201     B2.5Vn 130 0
33 V* V856 Sco Ae* 16 08 34.2870044544 -39 06 18.325711332 7.66 7.41 7.05 6.92   A9V_sh 405 0
34 V* V1027 Sco a2* 16 08 34.5616203192 -39 05 34.278268848   6.552 6.629 6.66   A0/3III 204 0
35 V* V952 Sco a2* 16 10 15.9221226696 -26 54 32.879906064   6.634 6.587     ApSi 93 0
36 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
37 HD 146284 * 16 16 26.6950070328 -24 16 55.013458692 6.7 6.835 6.712     B7IV 70 0
38 HD 146332 * 16 16 52.5517600032 -29 44 37.379436144 7.55 7.78 7.65     B3III 48 0
39 V* V1028 Sco a2* 16 27 29.6805068520 -29 17 17.780088804   7.10 7.01     ApSi 96 0
40 HD 148594 * 16 30 15.6761762712 -27 54 58.506303852   6.964 6.892     B8V 69 0
41 * N Sco V* 16 31 22.9344803220 -34 42 15.725494158 3.30 4.06 4.23 4.29 4.41 B2III-IV 151 0
42 * mu.01 Sco Be* 16 51 52.2283548696 -38 02 50.638070400 1.98 2.82 2.98     B1V+B 305 0

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