2020PASP..132e4301P


Query : 2020PASP..132e4301P

2020PASP..132e4301P - Publ. Astron. Soc. Pac., 132, part no 5, 4301-54301 (2020/May-0)

A semi-automated computational approach for Infrared Dark cloud localization: a catalog of Infrared Dark Clouds.

PARI J. and HORA J.L.

Abstract (from CDS):

The field of computer vision has greatly matured in the past decade, and many of the methods and techniques can be useful for astronomical applications. One example is in searching large imaging surveys for objects of interest, especially when it is difficult to specify the characteristics of the objects being searched for. We have developed a method using contour finding and convolution neural networks (CNNs) to search for Infrared Dark Clouds (IRDCs) in the Spitzer Galactic plane survey data. IRDCs can vary in size, shape, orientation, and optical depth, and are often located near regions with complex emission from molecular clouds and star formation, which can make the IRDCs difficult to reliably identify. False positives can occur in regions where emission is absent, rather than from a foreground IRDC. The contour finding algorithm we implemented found most closed figures in the mosaic and we developed rules to filter out some of the false positive before allowing the CNNs to analyze them. The method was applied to the Spitzer data in the Galactic plane surveys, and we have constructed a catalog of IRDCs which includes additional parts of the Galactic plane that were not included in earlier surveys.

Abstract Copyright: © 2020. The Astronomical Society of the Pacific. All rights reserved.

Journal keyword(s):

VizieR on-line data: <Available at CDS (J/PASP/132/e4301): table2.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME Per Arm PoG 03 30 +45.0           ~ 1385 0
2 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 295 0
3 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 461 1
4 NAME Nor Arm PoG 16 00 -50.0           ~ 381 0
5 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 717 1
6 NAME Outer Arm PoG 21 48 +69.4           ~ 265 0
7 NAME Vel-Car Region reg ~ ~           ~ 8 0

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2022.07.01-07:39:44

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