Results 1 to 10 of about 3,493 (285)
Chemistry in infrared dark clouds [PDF]
Astronomy and Astrophysics, 2011 Context. Massive stars play an important role in shaping the structure of galaxies. Infrared dark clouds (IRDCs), with their low temperatures and high densities, have been identified as the potential birthplaces of massive stars.
T Vasyunina, H Linz, Th Henning
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Deuteration in infrared dark clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Artículo de publicación ISIMuch of the dense gas in molecular clouds has a filamentary structure but the detailed structure and evolution of this gas is poorly known. We have observed 54 cores in infrared dark clouds (IRDCs) using N2H+ (1-0) and (3-2) to
G A Fuller, Jaime E Pineda, Guido Garay
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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
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SiO emission as a probe of cloud–cloud collisions in infrared dark clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 Infrared dark clouds (IRDCs) are very dense and highly extincted regions that host the initial conditions of star and stellar cluster formation. It is crucial to study the kinematics and molecular content of IRDCs to test their formation mechanism and ...
G Cosentino +2 more
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Astrochemical modelling of infrared dark clouds [PDF]
Astronomy and Astrophysics, 2022 Infrared dark clouds (IRDCs) are cold, dense regions of the interstellar medium (ISM) that are likely to represent the initial conditions for massive star formation.
Jonathan C Tan, G Cosentino, P Caselli
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Physical properties of Southern infrared dark clouds [PDF]
Astronomy and Astrophysics, 2009 Context: What are the mechanisms by which massive stars form? What are the initial conditions for these processes? It is commonly assumed that cold and dense Infrared Dark Clouds (IRDCs) represent the birth-sites of massive stars. Therefore, these clouds
T Vasyunina, H Linz, Th Henning
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Infrared dark clouds from the ISOGAL survey
Astronomy and Astrophysics, 2001 The ISO galactic survey provides images of the inner disk in two broad filters (around 7 and 15 μm) over some 15 square degrees, away from the brightest star forming regions.
P Hennebelle, M Perault, D Teyssier
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Cloud radiative effect dominates variabilities of surface energy budget in the dark Arctic [PDF]
Scientific ReportsClimate models simulate a wide range of temperatures in the Arctic. Here we investigate one of the main drivers of changes in surface temperature: the net surface heat flux in the models.
Cheng Tao, Minghua Zhang, Shaocheng Xie
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Molecular Line Observations of Infrared Dark Clouds: Seeking the Precursors to Intermediate and Massive Star Formation [PDF]
Astrophysical Journal, Supplement Series, 2006 We have identified 41 infrared dark clouds from the 8 μm maps of the Midcourse Space Experiment (MSX), selected to be found within 1 deg2 areas centered on known ultracompact H II regions. We have mapped these infrared dark clouds in N2H+1-->0, CS 2-->1,
S E Ragan, Edwin A Bergin, R Plume
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Similar complex kinematics within two massive, filamentary infrared dark clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Infrared dark clouds (IRDCs) are thought to be potential hosts of the elusive early phases of high-mass star formation. Here, we conduct an in-depth kinematic analysis of one such IRDC, G034.43+00.24 (Cloud F), using high sensitivity and high spectral ...
Ashley T Barnes +2 more
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