Results 1 to 10 of about 66,232 (263)

Molecular cloud dispersal traced by the ionized carbon 158 μm line

Astronomy & Astrophysics
Feedback from massive stars in the form of radiation and winds impacts the associated host molecular cloud. Not only can feedback compress gas and trigger the formation of dense cores that eventually collapse into new stars, it can also disperse cloud ...
Bonne L., Schneider N., Dannhauer S., Keilmann E., Jackson J. M., Simon R., Tielens A. G. G. M., Chambers E., Buchbender C., Verbena J. L., Kabanovic S., Faerber T., Anderson L. D., Güsten R., Jacob A. M., Guevara C., Wyrowski F.   +16 more
doaj   +1 more source

An S-shaped Filament Formed Due to Cloud–Cloud Collision in Molecular Cloud G178.28-00.61

The Astrophysical Journal Supplement Series
We present compelling observational evidence supporting G178.28-00.61 as an early-stage candidate for cloud–cloud collision (CCC), with indications of the formation of an S-shaped filament, evenly separated dense cores, and young star clusters.
Tianwei Zhang, Tie Liu, Yuefang Wu, Linjing Feng, Sihan Jiao, Derek Ward-Thompson, Alessio Traficante, Helen J Fraser, James Di Francesco, Doug Johnstone, Paul F. Goldsmith, Yasuo Doi, Xunchuan Liu, Chang Won Lee, Fengwei Xu, Ram K. Yadav, Glenn J White, Leonardo Bronfman, Yi-Jehng Kuan, Kee-Tae Kim, Donghui Quan   +20 more
doaj   +1 more source

RETHINKING A MYSTERIOUS MOLECULAR CLOUD [PDF]

The Astrophysical Journal, 2015
Accepted for publication in ApJ. 16 pages, 13 figures.
openaire   +2 more sources

Outer-Galaxy molecular clouds [PDF]

Symposium - International Astronomical Union, 1985
Since our original report of CO emission from outside the solar circle in the first quadrant (Kutner and Mead, 1981) we have extended the observations in two ways: (1) We have improved latitude and longitude coverage. Preliminary results on the latitude distribution were reported by Kutner (1983).
Marc L. Kutner, Kathryn N. Mead
openaire   +1 more source

The Molecular Cloud Life Cycle. II. Formation and Destruction of Molecular Clouds Diagnosed via H2 Fluorescent Emission

The Astrophysical Journal
Molecular hydrogen (H _2 ) formation and dissociation are key processes that drive the gas life cycle in galaxies. Using the SImulating the LifeCycle of Molecular Clouds zoom-in simulation suite, we explore the utility of future observations of H _2 ...
Blakesley Burkhart, Shmuel Bialy, Daniel Seifried, Stefanie Walch, Erika Hamden, Thomas J. Haworth, Keri Hoadley, Shuo Kong, Madisen Johnson, Sarah Jeffreson, Mark R. Krumholz, Min-Young Lee, Amiel Sternberg, Neal J. Turner   +13 more
doaj   +1 more source

Comprehensive analysis of repetitive extragenic palindrome sequences identified in bacteria and archaea using a new web-based tool, RepRanger

mSphere
Repetitive extragenic palindromic (REP) sequences were first discovered in the intergenic regions of Escherichia coli and later found in phylogenetically distinct bacterial species. However, their biological roles and sequence conservation remain unclear.
Oleg N. Murashko, Connor Morgan-Lang, Chen-Hsin Albert Yu, Hsin-Nan Lin, Anna Chao Kaberdina, Shin-Yu Kung, Vladimir R. Kaberdin, Sue Lin-Chao   +7 more
doaj   +1 more source

The Nature of Shocks in Molecular Clouds [PDF]

International Astronomical Union Colloquium, 1989
AbstractEvidence is presented to suggest that the shocked molecular hydrogen emission in the brightest part of the Orion outflow is produced in a J-shock and not a C-shock; that this is true throughout the entire flow; that it may be true in many outflow sources; and that this exacerbates problems with current explanations of the very wide velocity ...
openaire   +1 more source

A New Cloud–Cloud Collision Source N68 toward the G35 Molecular Cloud Complex

The Astrophysical Journal
Bubble N68 in the G35 complex shows clear cloud–cloud collision (CCC) signatures. Its semiring-like morphology harbors many significant massive star formation tracers: 6 H ii regions, 4 6.7 GHz masers, 5 Midcourse Space Experiment sources, 9 radio peaks,
En Chen, Xi Chen
doaj   +1 more source

Discovery of A Giant Spiral Molecular Cloud in the Galactic Anticenter. II. A Black Hole and Jet System

The Astronomical Journal
A giant spiral molecular cloud is recently discovered in the Galactic anticenter, within a wide-field and high-sensitivity CO line survey. We present multiwavelength observational data of this cloud in this work.
Xuepeng Chen, Li Sun, Yuehui Ma, Min Fang, Fujun Du, Ji Yang, Yang Su, Yan Sun, Xin Zhou, Qing-Zeng Yan, Shaobo Zhang, Lixia Yuan, Shiyu Zhang, Xin Liu   +13 more
doaj   +1 more source

Molecular Clouds at High Z [PDF]

Symposium - International Astronomical Union, 1991
The evidence for the existence of molecular clouds at large distances from the Galactic plane is reviewed. The molecular clouds at high Galactic latitudes are shown to be largely confined to the Galactic plane. There is evidence for one giant molecular cloud as much as four scale heights from the Galactic plane, but given the sample size from which the
openaire   +1 more source