J/A+A/655/L2 OGHReS 12CO(2-1) data cubes (Colombo+, 2021)
OGHReS: large-scale filaments in the outer Galaxy.
Colombo D., Koenig C., Urquhart J.S., Wyrowski F., Mattern M., Menten K.M.,
Lee M.-Y., Brand J., Wienen M., Mazumdar P., Schuller F., Leurini S.
<Astron. Astrophys. 655, L2 (2021)>
=2021A&A...655L...2C 2021A&A...655L...2C (SIMBAD/NED BibCode)
ADC_Keywords: Interstellar medium ; Carbon monoxide
Keywords: ISM: molecules - ISM: clouds - evolution - ISM: structure -
local interstellar matter - galaxies: ISM
Abstract:
Filaments are a ubiquitous morphological feature of the molecular
interstellar medium and are identified as sites of star formation. In
recent years, more than 100 large-scale filaments (with length >10pc)
have been observed in the inner Milky Way. As they appear linked to
Galactic dynamics, studying those structures represents an opportunity
to link kpc-scale phenomena to the physics of star formation, which
operates on much smaller scales. In this letter, we use newly acquired
Outer Galaxy High Resolution Survey (OGHReS) 12CO(2-1) data to
demonstrate that a significant number of large-scale filaments are
present in the outer Galaxy as well. The 37 filaments identified
appear tightly associated to inter-arm regions. In addition, their
masses and linear masses are, on average, one order of magnitude lower
than similar-sized molecular filaments located in the inner Galaxy,
showing that Milky Way dynamics is able to create very elongated
features in spite of the lower gas supply in the Galactic outskirts.
Description:
Datacubes used in the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 112 37 List of fits datacubes
fits/* . 37 Individual fits datacubes
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See also:
J/A+A/619/A166 : SEDIGISM, kinematics of ATLASGAL filaments (Mattern+, 2018)
Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1 A1 --- --- [G]
2- 10 F9.5 deg GLON Galacitc longitude
11- 19 F9.5 deg GLAT Galactic latitude
21- 23 I3 --- Nx Number of pixels along X-axis
25- 27 I3 --- Ny Number of pixels along Y-axis
29- 30 I2 --- Nz Number of pixels along Z-axis
32- 36 I5 m/s bVRAD Lower value of VRAD interval
38- 42 I5 m/s BVRAD Upper value of VRAD interval
44- 46 I3 m/s dVRAD VRAD resolution
48- 52 I5 Kibyte size Size of FITS file
54- 86 A33 --- FileName Name of FITS file, in subdirectory fits
88-112 A25 --- Title Title of the FITS file
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Acknowledgements:
Dario Colombo, dcolombo(at)mpifr-bonn.mpg.de
References:
Taylor & Cordes, 1993ApJ...411..674T 1993ApJ...411..674T
Rosolowsky et al., 2008ApJ...679.1338R 2008ApJ...679.1338R
Reid et al., 2016ApJ...823...77R 2016ApJ...823...77R
Zucker et al., 2018ApJ...864..153Z 2018ApJ...864..153Z
Amari & Aly, 2010A&A...522A..52A 2010A&A...522A..52A
(End) Patricia Vannier [CDS] 29-Oct-2021