2002MNRAS.334..327A

Query : 2002MNRAS.334..327A

2002MNRAS.334..327A - Mon. Not. R. Astron. Soc., 334, 327-337 (2002/August-1)

Ultra-high-resolution observations of CH in Southern Molecular Cloud envelopes.

ANDERSSON B.-G., WANNIER P.G. and CRAWFORD I.A.

Abstract (from CDS):

We present a mini-survey of ultrahigh-resolution spectroscopy (UHRS) of CH towards three southern molecular cloud envelopes. The sightlines are selected to probe physically similar gas in different Galactic environments. With a velocity resolution of ∼0.5km.s–1 (R =575000) these observations resolve most kinematic components of the absorption lines. We do, however, detect one line component in the Lupus region, which is not resolved and for which an upper limit of b <0.3km.s–1 is found. We find a correlation between distance of the absorbing gas from the Galactic mid-plane and the fractional abundance of CH. We show that this correlation can be explained as being a result of a fall-off in the ultraviolet radiation field intensity and propose that CH observations in carefully selected sightlines might allow a mapping of the variations in the interstellar radiation field.

Abstract Copyright: 2002 Blackwell Science Ltd

Journal keyword(s): ISM: individual: Chamaeleon - ISM: individual: Lupus - ISM: individual: Southern Coalsack - ISM: molecules

Simbad objects: 28

goto Full paper

goto View the references in ADS

Number of rows : 28
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 GAL 295-17 Cld 10 15 -77.4           ~ 6 0
2 HD 93237 Be* 10 41 51.5204253456 -79 46 59.837196072 5.39 5.892 5.969     B5III 75 0
3 HD 94454 * 10 51 30.2718819000 -75 52 57.953647452   6.77 6.69     B8III 40 0
4 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
5 HD 99872 ** 11 28 18.41395 -72 28 26.3265 5.83 6.221 6.115     B3V 85 0
6 GAL 298-13 Cld 11 35 -75.4           ~ 6 0
7 [DB2002b] G300.23-16.89 DNe 11 54 31 -79 27.8           ~ 46 1
8 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
9 HD 106943 * 12 18 06.7513835328 -61 28 11.640146052 7.07 7.49 7.51     B7IV 33 0
10 HD 108002 * 12 24 55.9571476872 -65 12 39.649886676 6.3 7.008 6.955 7.85   B2Ia/ab 67 0
11 HD 108610 SB* 12 28 54.8618257992 -61 52 15.289058244 6.33 6.87 6.92     B3IV/V 51 0
12 HD 108639 * 12 29 09.5168765256 -60 48 17.541197892 7.09 8.74 8.57 8.76   B1III 68 0
13 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 275 0
14 HD 108927 * 12 32 19.7295790536 -78 11 38.855722632   7.83 7.76     B5V 42 0
15 IRAS 12340-7958 LP* 12 37 39.7408011816 -80 15 13.707391932   16.11 14.39 13.63 9.81 ~ 108 0
16 NAME Cha III MoC 12 37.8 -80 15           ~ 147 2
17 HD 110020 El? 12 39 55.8519065736 -66 30 40.090934880   6.199 6.252     B8V 59 0
18 HD 110434 * 12 42 49.4549450544 -66 27 27.790843968   7.54 7.57     B8/9III 26 0
19 NAME Cha II MoC 12 54 -77.2           ~ 361 0
20 HD 112999 Be* 13 01 34.8962893200 -60 40 16.996296288 7 7.414 7.383     B6V 51 0
21 HD 114886 ** 13 14 44.38260 -63 34 51.8077 6.15 6.98 6.89 7.76   O9-B0V 114 0
22 V* V961 Cen SB* 13 16 04.8010592232 -62 35 01.490795556 7.51 9.16 9.32 8.82   O9.5III+B0Ib 111 0
23 HD 115455 SB* 13 18 35.3592390638 -62 29 28.407889555 7.40 8.17 7.97 8.81   O8III((f)) 109 1
24 HD 137595 PM* 15 28 02.2701731592 -33 32 42.874121688 6.78 7.52 7.49     B2II/III 47 0
25 HD 140037 * 15 42 40.0940922024 -32 11 09.718038852   7.40 7.48     B5III 37 0
26 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
27 HD 144965 Be* 16 10 10.5557672592 -40 07 43.767402492 6.71 7.206 7.114     B3Vne 70 0
28 V* V760 Sco SB* 16 24 43.7182304928 -34 53 37.529154204   7.16 7.05     B4V 176 0

To bookmark this query, right click on this link: simbad:objects in 2002MNRAS.334..327A and select 'bookmark this link' or equivalent in the popup menu