2011A&A...529L...6A

Query : 2011A&A...529L...6A

2011A&A...529L...6A - Astronomy and Astrophysics, volume 529L6-6 (2011/5-1)

Characterizing interstellar filaments with Herschel in IC 5146.

ARZOUMANIAN D., ANDRE P., DIDELON P., KOENYVES V., SCHNEIDER N., MEN'SHCHIKOV A., SOUSBIE T., ZAVAGNO A., BONTEMPS S., DI FRANCESCO J., GRIFFIN M., HENNEMANN M., HILL T., KIRK J., MARTIN P., MINIER V., MOLINARI S., MOTTE F., PERETTO N., PEZZUTO S., SPINOGLIO L., WARD-THOMPSON D., WHITE G. and WILSON C.D.

Abstract (from CDS):

We provide a first look at the results of the Herschel Gould Belt survey toward the IC 5146 molecular cloud and present a preliminary analysis of the filamentary structure in this region. The column density map, derived from our 70-500µm Herschel data, reveals a complex network of filaments and confirms that these filaments are the main birth sites of prestellar cores. We analyze the column density profiles of 27 filaments and show that the underlying radial density profiles fall off as r–1.5 to r–2.5 at large radii. Our main result is that the filaments seem to be characterized by a narrow distribution of widths with a median value of 0.10±0.03pc, which is in stark contrast to a much broader distribution of central Jeans lengths. This characteristic width of ∼0.1pc corresponds to within a factor of ∼2 to the sonic scale below which interstellar turbulence becomes subsonic in diffuse gas, which supports the argument that the filaments may form as a result of the dissipation of large-scale turbulence.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - ISM: individual objects: IC 5146 - ISM: clouds - ISM: structure - submillimeter: ISM

Simbad objects: 1

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Number of rows : 1
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 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 507 2

Query : 2011A&A...529L...6A

Basic data :
IC 5146 -- Open Cluster
Other object types: otypes_help 		OpC (2013A&A,OCISM,...), Cl* (2020A&A,C,...), As* (2019AJ,[KC2019]), HII (LBN), * (IC), ISM (Min)
ICRS coord. (ep=J2000) : 		21 53 29.3 +47 14 46 (Optical) [ ] E 2021A&A...647A..19T
FK4 coord. (ep=B1950 eq=1950) : 		21 51 33.5 +47 00 35 [ ]
Gal coord. (ep=J2000) : 		094.3820 -05.5204 [ ]
Proper motions mas/yr : 		-2.910 -2.490 [0.037 0.037 90] C 2020A&A...633A..99C
Radial velocity / Redshift / cz : 		V(km/s) -5.48 [0.25] / z(spectroscopic) -0.000018 [0.000001] / cz -5.48 [0.25]
   (NIR) A 2019A&A...623A..80C
Parallaxes (mas): 		1.213 [0.013] C 2020A&A...633A..99C
Angular size (arcmin): 		8.2 8.2 0 (Opt) D 2020A&A...633A..99C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1032 		Display criteria :

Identifiers (12) :
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IC 5146 LBN 424 NAME Cocoon Nebula OCl 213.0
C 2151+470 LBN 094.43-05.58 OCISM 43 [KC2019] Theia 88
Cl Collinder 470 Min 2-70 OCl 213 [KPS2012] MWSC 3571

References (507 between 1850 and 2026) (Total 507)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 8    Distance : 5    Fe/H : 3    Plx : 7    PM : 9   

   

Observing logs
Herschel : 4    ISO : 12   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : IC 5146

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Notes (1) :

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