1998A&A...336L..53T

Query : 1998A&A...336L..53T

1998A&A...336L..53T - Astronomy and Astrophysics, volume 336L53-56 (1998/8-3)

[CII]158 and [OI]63µm ISO-Observations of L1457.

TIMMERMANN R., KOESTER B. and STUTZKI J.

Abstract (from CDS):

We report here the results of [CII]158 and [OI]63µm fine-structure line observations along two cuts across a molecular clump of L1457 (MBM12) carried out with ISO-LWS. [CII] emission was detected at all positions observed. It can be assigned to the cooling of the diffuse atomic interstellar medium. We observed excess [CII] emission from the dense clumpy molecular component. It is likely to originate from molecular gas that is irradiated by an interstellar FUV-radiation field of order χ=(1-2)χ₀. Using PDR models for a spherical symmetry we find the molecular gas of L1457 consists of clumps with a density n_H∼10⁵cm^–3. Their masses range between 10^–4 and 10^–3M_☉ consistent with the clump distribution derived from high resolution CO observations. [OI]63µm emission was not detected toward L1457.

Abstract Copyright: ∼

Journal keyword(s): ISM: abundances - ISM: clouds - ISM: individual: L1457 (MBM12) - infrared: ISM: lines and bands

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	LDN 1457	DNe	02 55.9	+19 35						~	85	1

Query : 1998A&A...336L..53T

Basic data :

LDN 1457 -- Dark Cloud (nebula)
Other object types:	`DNe (LDN,[DB2002b])`, `Cld (TGU)`
ICRS coord. (ep=J2000) :	`02 55 54.0 +19 35 00 [ ] E 2005PASJ...57S...1D`
FK4 coord. (ep=B1950 eq=1950) :	`02 53 03.9 +19 22 55 [ ]`
Gal coord. (ep=J2000) :	`159.0960 -34.4046 [ ]`
Angular size (arcmin):	`31 31 90 (~) D` `2002A&A...383..631D`

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LDN 1457 TGU L130 P2 [DB2002b] G159.11-34.45

References (85 between 1850 and 2026) (Total 85)
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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