J/A+A/569/A7 CB17 dust emission (100-500um), N(H) and T maps (Schmalzl+, 2014)
The Earliest Phases of Star formation (EPoS):
Temperature, density, and kinematic structure of the star-forming core CB 17.
Schmalzl M., Launhardt R., Stutz A.M., Linz H., Bourke T.L., Beuther H.,
Henning T., Krause O., Nielbock M., Schmiedeke A.
<Astron. Astrophys. 569, A7 (2014)>
=2014A&A...569A...7S 2014A&A...569A...7S
ADC_Keywords: Bok globules ; Molecular clouds ; Millimetric/submm sources
Keywords: dust, extinction - ISM: molecules - ISM: kinematics and dynamics -
stars: formation - stars: low-mass - ISM: individual objects: CB 17
Abstract:
The initial conditions for the gravitational collapse of molecular
cloud cores and the subsequent birth of stars are still not well
constrained. The characteristic cold temperatures (∼10K) in such
regions require observations at sub-millimetre and longer wavelengths.
The Herschel Space Observatory and complementary ground-based
observations presented in this paper have the unprecedented potential
to reveal the structure and kinematics of a prototypical core region
at the onset of stellar birth.
This paper aims to determine the density, temperature, and velocity
structure of the star-forming Bok globule CB 17. This isolated
region is known to host (at least) two sources at different
evolutionary stages: a dense core, SMM1, and a Class I protostar, IRS.
We modeled the cold dust emission maps from 100µm to 1.2mm with
both a modified blackbody technique to determine the optical
depth-weighted line-of-sight temperature and column density and a
ray-tracing technique to determine the core temperature and volume
density structure. Furthermore, we analysed the kinematics of CB17
using the high-density gas tracer N2H^+
Description:
The attached files contain the Herschel bolometer maps of CB 17 for
PACS + SPIRE (100-500um) from Figure 2, and the derived column density
(NH) and dust temperature maps from Figure 3.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------
04 04 38 +56 56.2 CB 17 = [CB88] 17
-----------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
list.dat 104 7 List of fits images
fits/* . 7 Individual FITS images (100-500µm Herschel maps)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 23 F4.1 arcsec/pix Scale Scale of the image
25- 27 I3 --- Nx [45/255] Number of pixels along X-axis
28 A1 --- --- [x]
29- 31 I3 --- Ny [38/287] Number of pixels along Y-axis
33- 35 I3 Kibyte size [14/295] Size of FITS file
37- 50 A14 --- FileName Name of FITS file in subdirectory fits
52-104 A53 --- Title Title of the files
--------------------------------------------------------------------------------
Acknowledgements:
Markus Schmalzl, schmalzl(at)strw.leidenuniv.nl
(End) Patricia Vannier [CDS] 18-Jul-2014