2012A&A...542L..10O


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.25CEST01:24:09

2012A&A...542L..10O - Astronomy and Astrophysics, volume 542, L10-10 (2012/6-1)

Dynamics and photodissociation region properties in IC 1396A.

OKADA Y., GUESTEN R., REQUENA-TORRES M.A., ROELLIG M., HARTOGH P., HUEBERS H.-W., KLEIN T., RICKEN O., SIMON R. and STUTZKI J.

Abstract (from CDS):

We investigate the gas dynamics and the physical properties of photodissociation regions (PDRs) in IC 1396A, which is an illuminated bright-rimmed globule with internal structures created by young stellar objects. Our mapping observations of the [CII] emission in IC 1396A with GREAT onboard SOFIA revealed the detailed velocity structure of this region. We combined them with observations of the [CI] 3P1-3P0 and CO(4-3) emissions to study the dynamics of the different tracers and physical properties of the PDRs. The [CII] emission generally matches the IRAC 8µm, which traces the polycyclic aromatic hydrocarbon (PAH) emissions. The CO(4-3) emission peaks inside the globule, and the [CI] emission is strong in outer regions, following the 8µm emission to some degree, but its peak is different from that of [CII]. The [CII] emitting gas shows a clear velocity gradient within the globule, which is not significant in the [CI] and CO(4-3) emission. Some clumps that are prominent in [CII] emission appear to be blown away from the rim of the globule. The observed ratios of [CII]/[CI] and [CII]/CO(4-3) are compared to the KOSMA-τ PDR model, which indicates a density of 104-105cm–3.

Abstract Copyright:

Journal keyword(s): ISM: lines and bands - photon-dominated region (PDR) - ISM: individual objects: IC 1396

Status at CDS:  

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Elephant Trunk Nebula MoC 21 36 +57.4           ~ 47 0
2 EM* LkHA 349 Or* 21 36 50.7254771922 +57 31 10.698341701   15.13 13.45 12.88 10.91 F9e 46 1
3 HD 206267 SB* 21 38 57.6182747705 +57 29 20.557311013 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 450 0
4 IC 1396 OpC 21 39 00 +57 29.4           ~ 444 1
5 Ass Cep OB 2 As* 21 51 +60.0           ~ 279 0

    Equat.    Gal    SGal    Ecl

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2020.05.25-01:24:09

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