Results 81 to 90 of about 273,089 (299)

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

A CO Line and Infrared Continuum Study of the Active Star-Forming Complex W51

, 2010
We present the results of an extensive observational study of the active star-forming complex W51 that was observed in the J=2-1 transition of the 12CO and 13CO molecules over a 1.25 deg x 1.00 deg region with the University of Arizona Heinrich Hertz ...
Arnal, Beuther, Bieging, Brand, Burton, Carey, Carpenter, Craig A. Kulesa, Crampton, Cyganowski, Downes, Elmegreen, Fazio, Figuerêdo, Genzel, Goss, Goudis, Gritschneder, Habe, Imai, Israel, Jackson, John H. Bieging, Kang, Kang, Klein, Koo, Koo, Koo, Kulesa, Kundu, Miju Kang, Minho Choi, Pankonin, Povich, Rieke, Robitaille, Sakamoto, Sault, Shepherd, Skrutskie, Smith, Subrahmanyan, van Gorkom, Walborn, William L. Peters, Williams, Wilson, Xu, Youngung Lee   +49 more
core   +1 more source

Cavity of Molecular Gas Associated with Supernova Remnant 3C 397 [PDF]

, 2009
3C 397 is a radio and X-ray bright Galactic supernova remnant (SNR) with an unusual rectangular morphology. Our CO observation obtained with the Purple Mountain Observatory at Delingha reveals that the remnant is well confined in a cavity of molecular ...
Abdo, Abdo, Abdo, Acciari, Acciari, Aharonian, Albert, Albert, Arikawa, Bing Jiang, Byun, Caswell, Chen, Chen, Claussen, Cox, Dame, Dubner, Dyer, Feinstein, Feldt, Filipovic, Fukui, Funk, Green, Hewitt, Hewitt, Hewitt, Hines, Humensky, Jackson, Jiang, Junkes, Junzhi Wang, Katagiri, Keohane, Koo, Koo, Koralesky, Kothes, Kothes, Landecker, Leahy, Leahy, Lee, Lee, Lee, Levenson, Moriguchi, Moriguchi, Muraishi, Oliva, Oliver, Reach, Reach, Reach, Reach, Reach, Reynoso, Reynoso, Reynoso, Rho, Rho, Roman-Duval, Rosado, Routledge, Safi-Harb, Safi-Harb, Samar Safi-Harb, Sasaki, Seta, Shinn, Stil, Su, Su, Tappe, Tavani, Tian, Tracey DeLaney, White, Xin Zhou, Yang, Yang Chen, Yang Su, Yusef-Zadeh, Yusef-Zadeh, Yusef-Zadeh, Zel'dovich, Zhang, Zhou   +89 more
core   +2 more sources

The formation of molecular clouds [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
In a recent paper, Elmegreen (2000) has made a cogent case, from an observational point of view, that the lifetimes of molecular clouds are comparable to their dynamical timescales. If so, this has important implications for the mechanisms by which molecular clouds form.
Pringle, J. E., Allen, Ronald J., Lubow, S. H.   +2 more
openaire   +2 more sources

Graphene Nanosheet‐Based Mixed Proton‐Electron Conducting Membranes for Efficient Hydrogen Purification

Advanced Functional Materials, EarlyView.
A monolayer graphene/phosphoric‐acid mixed proton‐electron conducting membrane combines proton‐conducting nanoconfined acid channels with electron‐conducting graphene nanosheets for efficient high‐temperature hydrogen purification. The membrane achieves nearly 100% H2/CO2 selectivity and 69 GPU hydrogen permeance at 250°C, arising from synergistic ...
Kaiqiang He, Fanmengjing Wang, Dehua Dong, Yuan Kang, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Douglas R. MacFarlane, Huanting Wang   +8 more
wiley   +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

Fast Molecular Cloud Destruction Requires Fast Cloud Formation [PDF]

The Astrophysical Journal Letters, 2017
Abstract A large fraction of the gas in the Galaxy is cold, dense, and molecular. If all this gas collapsed under the influence of gravity and formed stars in a local free-fall time, the star formation rate in the Galaxy would exceed that observed by more than an order of magnitude. Other star-forming galaxies behave similarly.
Mordecai-Mark Mac Low, Andreas Burkert, Juan C. Ibáñez-Mejía   +2 more
openaire   +3 more sources

Fluorescent Nanosensor for Indole‐3‐Propionic Acid Detection in Gut Health Monitoring

Advanced Healthcare Materials, EarlyView.
This work introduces a fluorescent nanosensor system with two optical modalities for detection of indole‐3‐propionic acid (IPA) gut metabolite: (1) blue‐emitting cationic conjugated polyelectrolyte (CP3) and (2) near‐infrared (NIR)‐emitting CP3‐wrapped single‐walled carbon nanotube (SWNT).
Mervin Chun‐Yi Ang, Jonathan Wei Jie Lee, Sayyid Mohaideen, Gabriel Sánchez‐Velázquez, Song Wang, Yangyang Han, Liu Lin, Germaine Yong, Raju Cheerlavancha, Duc Thinh Khong, Jianhong Ching, Sharon Hong Yu Han, Jun Yu Yeo, Lian Xu, Gajendra Pratap Singh, Michael S. Strano   +15 more
wiley   +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

Hierarchical structure of the interstellar molecular clouds and star formation

Open Astronomy, 2017
Properties of the hierarchical structures of interstellar molecular clouds are discussed. Particular attention is paid to the statistical correlations between velocity dispersion and size, and between the magnetic field strength and gas density.
Dudorov Alexander E., Khaibrakhmanov Sergey A.   +1 more
doaj   +1 more source