scholarly journals Molecular Line Observations of Infrared Dark Clouds: Seeking the Precursors to Intermediate and Massive Star Formation

2006 ◽  
Vol 166 (2) ◽  
pp. 567-584 ◽  
Author(s):  
S. E. Ragan ◽  
E. A. Bergin ◽  
R. Plume ◽  
D. L. Gibson ◽  
D. J. Wilner ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Molecular Line ◽  
Dark Clouds ◽  
Infrared Dark Clouds

scholarly journals Fire from Ice - Massive Star Birth from Infrared Dark Clouds

2017 ◽  
Vol 13 (S332) ◽  
pp. 139-152
Author(s):  
Jonathan C. Tan
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Initial Conditions ◽  
Massive Star Formation ◽  
Dark Clouds ◽  
Complex Process ◽  
Infrared Dark Clouds

AbstractI review massive star formation in our Galaxy, focussing on initial conditions in Infrared Dark Clouds (IRDCs), including the search for massive pre-stellar cores (PSCs), and modeling of later stages of massive protostars, i.e., hot molecular cores (HMCs). I highlight how developments in astrochemistry, coupled with rapidly improving theoretical/computational and observational capabilities are helping to improve our understanding of the complex process of massive star formation.

scholarly journals Southern IRDCs seen with Spitzer/MIPS

2006 ◽  
Vol 2 (S237) ◽  
pp. 440-440 ◽  
Author(s):  
H. Linz ◽  
Ra. Klein ◽  
L. Looney ◽  
Th. Henning ◽  
B. Stecklum ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Dark Clouds ◽  
Dust Extinction ◽  
Early Stages ◽  
Ir Sources ◽  
Current State ◽  
Infrared Dark Clouds ◽  
Hunting Ground

AbstractInfrared dark clouds (IRDCs) are generally assumed to be a promising hunting ground for tracing very early stages of massive star formation. Observations with Spitzer are a viable tool to probe their interiors that are still dominated by strong dust extinction even at 8 μm. With Spitzer/MIPS, we have observed several IRDCs at 24 and 70 micron. We generally find weak 24 micron sources within the IRDCs. However, at 70 micron these sources remain weak and thus indicate lower luminosities at the current state of evolution. Indications for internal substructures exist, separating regions with compact IR sources from even more dark regions.

scholarly journals PHYSICAL CONDITIONS OF THE EARLIEST PHASES OF MASSIVE STAR FORMATION: SINGLE-DISH AND INTERFEROMETRIC OBSERVATIONS OF AMMONIA AND CCS IN INFRARED DARK CLOUDS

2015 ◽  
Vol 150 (5) ◽  
pp. 159 ◽  
Author(s):  
William J. Dirienzo ◽  
Crystal Brogan ◽  
Rémy Indebetouw ◽  
Claire J. Chandler ◽  
Rachel K. Friesen ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Dark Clouds ◽  
Physical Conditions ◽  
Infrared Dark Clouds

scholarly journals SiO Outflows as Tracers of Massive Star Formation in Infrared Dark Clouds

2021 ◽  
Vol 921 (1) ◽  
pp. 96
Author(s):  
Mengyao Liu ◽  
Jonathan C. Tan ◽  
Joshua Marvil ◽  
Shuo Kong ◽  
Viviana Rosero ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Dark Clouds ◽  
Infrared Dark Clouds

Perspectives on star formation: the formation of high-mass stars

2017 ◽  
Vol 13 (S336) ◽  
pp. 193-200
Author(s):  
Maria T. Beltrán
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Point Of View ◽  
High Mass ◽  
Observational Research ◽  
Mass Star ◽  
Ob Stars ◽  
Dark Clouds ◽  
Infrared Dark Clouds

AbstractThe formation process of high-mass stars has puzzled the astrophysical community for decades from both a theoretical and an observational point of view. Here, we present an overview of the current theories and status of the observational research on this field, outlining the progress achieved in recent years on our knowledge of the initial phases of massive star formation, the fragmentation of cold, infrared-dark clouds, and the evidence for circumstellar accretion disks around OB stars. The role of masers in helping us to understand the mechanism leading to the formation of a high-mass star are also discussed.

scholarly journals Formation of massive stars

2010 ◽  
Vol 6 (S270) ◽  
pp. 33-40
Author(s):  
Maria T. Beltrán
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Stars ◽  
Point Of View ◽  
High Mass ◽  
Observational Research ◽  
Current Status ◽  
Dark Clouds ◽  
Star Formation Activity ◽  
Infrared Dark Clouds

AbstractThe formation of high-mass stars represents a challenge from both a theoretical and an observational point of view. Here, we present an overview of the current status of the observational research on this field, outlining the progress achieved in recent years on our knowledge of the initial phases of massive star formation. The fragmentation of cold, infrared-dark clouds, and the evidence for star formation activity on some of them will be discussed, together with the kinematics of the gas in hot molecular cores, which can give us insights on the mechanism leading to the birth of an OB star.

scholarly journals Atomic carbon in an infrared dark cloud

2009 ◽  
Vol 5 (H15) ◽  
pp. 403-403
Author(s):  
Volker Ossenkopf ◽  
Chris W. Ormel ◽  
Robert Simon ◽  
Kefeng Sun ◽  
Jürgen Stutzki
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Near Infrared ◽  
Far Infrared ◽  
Test Bed ◽  
Dark Cloud ◽  
Dark Clouds ◽  
Infrared Dark Clouds ◽  
Cloud Material

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.

scholarly journals THE INFLOW SIGNATURE TOWARD DIFFERENT EVOLUTIONARY PHASES OF MASSIVE STAR FORMATION

2016 ◽  
Vol 225 (2) ◽  
pp. 21 ◽  
Author(s):  
Mihwa Jin ◽  
Jeong-Eun Lee ◽  
Kee-Tae Kim ◽  
Neal J. Evans II
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation

scholarly journals Uncovering the earliest stages of massive star formation

2005 ◽  
Vol 1 (S227) ◽  
pp. 157-162 ◽  
Author(s):  
M. G. Burton ◽  
T. Hill ◽  
S. N. Longmore ◽  
C. R. Purcell ◽  
A. J. Walsh
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation
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