2002A&A...395..663T


Query : 2002A&A...395..663T

2002A&A...395..663T - Astronomy and Astrophysics, volume 395, 663-667 (2002/11-4)

Extending the limits of globule detection. ISOPHOT Serendipity Survey observations of interstellar clouds II.

TOTH L.V., KISS C., JUVELA M., STICKEL M., LISENFELD U. and HOTZEL S.

Abstract (from CDS):

Small isolated clouds were discovered by the ISOPHOT 170µm Serendipity Survey (ISOSS) as faint I170<13MJy/sr FIR sources. One of them is ISOSS J20246+6540, a cold (Td≃14.5K) pointlike ISOSS source without an IRAS pointsource counterpart. In the Digitized Sky Survey B band it is seen as a 3'size bipolar nebulosity with an average excess DSS blue band surface brightness of 8% of the background's photographical density. The CO column density distribution determined by multi-isotopic, multi-level CO measurements with the IRAM-30m telescope agrees well with the optical appearance. An average hydrogen column density of ≃1021cm–2 was derived from both the FIR and CO data. Using a kinematic distance estimate of 400pc the NLTE modelling of the CO, HCO+, and CS measurements gives a peak density of ≃104cm–3. The multiwavelength data characterise ISOSS J20246+6540 as a representative of a class of globules which has not been discovered so far due to their small angular size and low 100µm brightness. A significant overabundance of 13CO is found X(13CO)≥150xX(C18O). This is likely due to isotope selective chemical processes.

Abstract Copyright:

Journal keyword(s): ISM: clouds - dust, extinction - ISM: molecules - Infrared: ISM: - Surveys

CDS comments: YDM 97(*): unnumbered peak in YDM97, not in SIMBAD.

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 987 2
2 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 747 0
3 LDN 57 DNe 17 22 38.2 -23 49 34           ~ 300 1
4 ISOSS J20180+6345 IR 20 18.1 +63 45           ~ 1 0
5 [DB2002b] G97.84+15.33 MoC 20 18 19 +63 52.7           ~ 6 0
6 ISOSS J20215+6820 IR 20 21.5 +68 20           ~ 1 0
7 [YDM97] CO 3 MoC 20 23 02.2 +66 45 38           ~ 2 0
8 [YDM97] CO 4 MoC 20 23 36.6 +67 37 24           ~ 2 0
9 ISOSS J20246+6540 IR 20 24.7 +65 40           ~ 2 0
10 [YDM97] CO 7 MoC 20 32 33.2 +68 27 22           ~ 2 0
11 [YDM97] CO 10 MoC 20 32 39.9 +69 12 35           ~ 2 0
12 LDN 1122 DNe 20 32.7 +65 20           ~ 7 0
13 [YDM97] CO 1 MoC 20 32 56.3 +65 21 31           ~ 2 0
14 [YDM97] CO 9 MoC 20 33 37.1 +68 51 01           ~ 2 0
15 LDN 1100 Y*O 20 36 22.86 +63 53 40.4           ~ 30 0
16 ISOSS J20380+6352 IR 20 38.0 +63 52           ~ 2 0
17 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 1005 0
18 LDN 1157 DNe 20 39 06.4 +68 02 13           ~ 543 0
19 LDN 1155 DNe 20 43.5 +67 41           ~ 26 0
20 ISOSS J20474+6014 IR 20 47.4 +60 13           ~ 1 0
21 [LM99] L1082C-3 cor 20 49 07.0 +60 11 48           ~ 7 0
22 [YDM97] CO 21 MoC 22 17 18.2 +61 44 42           ~ 2 0
23 NAME Cepheus Flare MoC 23 34 +72.0           ~ 118 0

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2022.08.11-20:29:13

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