Results 11 to 20 of about 1,445,074 (221)
Ammonia in infrared dark clouds [PDF]
Astronomy & Astrophysics, 2006 Infrared Dark Clouds appear to be the long sought population of cold and dense aggregations with the potential of harbouring the earliest stages of massive star formation. Up to now there has been no systematic study on the temperature distribution, velocity fields, chemical and physical state toward this new cloud population.
Pillai, Thushara +3 more
openaire +3 more sources
Deuteration in infrared dark clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 15 pages, 12 ...
Fuller, Gary; id_orcid 0000-0001-8509-1818 +6 more
openaire +9 more sources
CO depletion in infrared dark clouds
Astronomy & AstrophysicsContext. Infrared dark clouds (IRDCs) are cold, dense structures that are likely representative of the initial conditions of star formation. Many studies of IRDCs employ CO to investigate cloud dynamics, but CO can be highly depleted from the gas phase ...
Cosentino G. +12 more
doaj +5 more sources
Atomic carbon in an infrared dark cloud [PDF]
Proceedings of the International Astronomical Union, 2009 Infrared dark clouds (IRDCs) are potential sites of massive star formation, dark in the near-infrared, but in many cases already with indications of active star-formation from far-infrared and submm observations. They are an ideal test bed to study the role of internal and external heating on the structure of the molecular cloud material.
Ossenkopf, Volker +4 more
openaire +2 more sources
A New Comprehensive Catalogue of Infrared Dark Clouds [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractTo better characterise infrared dark clouds (IRDCs), and the star formation within them, a comprehensive catalogue of IRDCs has been constructed from the Spitzer GLIMPSE and MIPSGAL archival data. Mosaicing the individual survey blocks together, we have used a new extraction method to identify dark clouds up to 30′ in size, and produce a column
G. A. Fuller, N. Peretto
openaire +2 more sources
Radiative Transfer Simulations of Infrared Dark Clouds [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractThe determination of prestellar core structure is often based on observations of (sub)millimeter dust continuum. However, recently the Spitzer Space Telescope provided us with IR images of many objects not only in emission but also in absorption.
Yaroslav Pavlyuchenkov +3 more
openaire +2 more sources
Infrared Dark Clouds in the Cygnus-X Region
, 2012 As part of the Cygnus-X Spitzer Legacy survey, we have begun a study of the infrared dark clouds (IRDCs) found in the IRAC and MIPS data of the region. Since most of the IRDCs are associated with the Cygnus-X complex at 1.4 kpc, they are closer than most of those observed in the large Galactic surveys, and therefore we can better resolve their ...
Hora, Joseph L. +17 more
core +6 more sources
Submillimetre molecular line observations and modelling of molecular clouds. [PDF]
, 1985 PhDSubmillimetre molecular line observations of molecular clouds in our galaxy are presented, and the data analysed using various alternative cloud models.
Richardson, Kevin John
core +4 more sources
INFRARED DARK CLOUDS IN THE SMALL MAGELLANIC CLOUD? [PDF]
The Astronomical Journal, 2009 accepted for publication in the Astronomical ...
Lee, Min-Young +8 more
openaire +7 more sources
A Semi-automated Computational Approach for Infrared Dark Cloud Localization: A Catalog of Infrared Dark Clouds [PDF]
Publications of the Astronomical Society of the Pacific, 2020 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.
Jyothish Pari, Joseph L. Hora
openaire +2 more sources