J/A+A/558/A44 TMC-1N mapping in JHK bands (Malinen+, 2013)
Mapping of interstellar clouds with infrared light scattered from dust: TMC-1N.
Malinen J., Juvela M., Pelkonen V.-M., Rawlings M.G.
<Astron. Astrophys. 558, A44 (2013)>
=2013A&A...558A..44M 2013A&A...558A..44M
ADC_Keywords: Interstellar medium ; Molecular clouds
Keywords: ISM: clouds - stars: formation - infrared: ISM - submillimeter: ISM -
scattering - radiative transfer
Abstract:
Mapping of the near-infrared (NIR) scattered light is a recent method
for the study of interstellar clouds, complementing other, more
commonly used methods, like dust emission and extinction.
Our goal is to study the usability of this method on larger scale,
and compare the properties of a filamentary structure using infrared
scattering and other methods. We also study the radiation field and
differences in grain emissivity between diffuse and dense areas.
We have used scattered NIR J, H, and K band surface brightness
observations with WFCAM instrument to map a filament TMC-1N in Taurus
Molecular Cloud, covering an area of 1°x1° corresponding to
~(2.44pc). We have converted the data into an optical depth map and
compared the results with NIR extinction and Herschel observations of
sub-mm dust emission. We have also modelled the filament with 3D
radiative transfer calculations of scattered light.
Description:
Maps of optical depth tau, derived using NICER method and scattered
near-infrared light. Both are based on J, H, and K band observations
made with UKIRT/WFCAM instrument.
Objects:
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RA (2000) DE Designation(s)
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04 41 21.3 +25 48 07 TMC-1N = TMC-1N
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 115 2 List of fits files
fits/* . 2 Individual fits files
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 24 F5.3 arcsec/pix Scale Scale of the image
26- 29 I4 pix Nx Number of pixels along X-axis
30 A1 --- --- [x]
31- 34 I4 pix Ny Number of pixels along Y-axis
36- 47 A12 --- FileName Name of FITS file in subdirectory fits
49-115 A67 --- Title Title of the file
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Acknowledgements:
Johanna Malinen, pjmaline(at)cc.helsinki.fi
(End) Patricia Vannier [CDS] 27-Aug-2013