Results 131 to 140 of about 4,653,928 (371)

Molecular Clouds in External Galaxies [PDF]

Symposium - International Astronomical Union, 1985
Observations of the large-scale distribution of molecular clouds in external galaxies offer a unique opportunity for investigating galactic evolution. New generations of stars form in these dense regions, and the most massive of these stars recycle their processed interiors into the interstellar medium.
openaire   +2 more sources

Waves on the surface of the Orion molecular cloud [PDF]

, 2010
Massive stars influence their parental molecular cloud, and it has long been suspected that the development of hydrodynamical instabilities can compress or fragment the cloud. Identifying such instabilities has proved difficult.
A Rodriguez-Franco, A Tappe, AGGM Tielens, B Lefloch, D Johnstone, DA Neufeld, DD Ryutov, DD Ryutov, G Tenorio-Tagle, J Bally, J Bally, J Wilms, JC Weingartner, JJ Hester, José Cernicharo, K-F Schuster, KM Menten, L Spitzer, M Güdel, MJ Kaufman, MW Pound, MW Pound, Núria Marcelino, O Berné, Olivier Berné, PR Woodward, R Bachiller, R Genzel, S Chandrasekhar   +28 more
core   +2 more sources

Toward Architected Microstructures Using Advanced Laser Beam Shaping in Laser Powder Bed Fusion of Ti‐6Al‐4V

Advanced Functional Materials, EarlyView.
This research applies advanced laser beam shaping (LCoS‐SLM) to fabricate the Ti‐6Al‐4V alloy via laser powder bed fusion. A tailored beam is used to prevent martensite formation and create a dual α+β microstructure by controlling cooling rates.
Reza Esmaeilzadeh, Jamasp Jhabvala, Lucas Schlenger, Mathijs van der Meer, Eric Boillat, Cyril Cayron, Amir Mohammad Jamili, Junfeng Xiao, Roland E. Logé   +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

THE TWO MOLECULAR CLOUDS IN RCW 38: EVIDENCE FOR THE FORMATION OF THE YOUNGEST SUPER STAR CLUSTER IN THE MILKY WAY TRIGGERED BY CLOUD–CLOUD COLLISION [PDF]

, 2015
We present distributions of two molecular clouds having velocities of 2 and 14 km s−1 toward RCW 38, the youngest super star cluster in the Milky Way, in the 12CO J = 1–0 and 3–2 and 13CO J = 1–0 transitions.
Y. Fukui, K. Torii, A. Ohama, K. Hasegawa, Y. Hattori, H. Sano, S. Ohashi, K. Fujii, S. Kuwahara, N. Mizuno, J. Dawson, H. Yamamoto, K. Tachihara, T. Okuda, T. Onishi, A. Mizuno   +15 more
semanticscholar   +1 more source

The Molecular Clouds of M31

The Astrophysical Journal
Abstract Deep interferometric observations of CO and dust continuum emission are obtained with the Submillimeter Array at 230 GHz to investigate the physical nature of the giant molecular cloud (GMC) population in the Andromeda galaxy (M31).
Charles J. Lada, Jan Forbrich, Glen Petitpas, Sébastien Viaene   +3 more
openaire   +3 more sources

Integration of Perovskite/Low‐Dimensional Material Heterostructures for Optoelectronics and Artificial Visual Systems

Advanced Functional Materials, EarlyView.
Heterojunctions combining halide perovskites with low‐dimensional materials enhance optoelectronic devices by enabling precise charge control and improving efficiency, stability, and speed. These synergies advance flexible electronics, wearable sensors, and neuromorphic computing, mimicking biological vision for real‐time image analysis and intelligent
Yu‐Jin Du, Junjie Yang, Ziyu Lv, Yongbiao Zhai, Zezhuang Yi, Yuhui Xie, Ming‐Lin Zheng, Xiangyu Ma, Guodong Gong, Yan Wang, Ye Zhou, Su‐Ting Han   +11 more
wiley   +1 more source

3D MC. I. X-Ray Tomography Begins to Unravel the 3D Structure of a Molecular Cloud in our Galaxy’s Center

The Astrophysical Journal Letters
Astronomers have used observations of the Galactic gas and dust via infrared, microwave, and radio to study molecular clouds in extreme environments such as the Galactic center.
Samantha W. Brunker, Cara Battersby, Danya Alboslani, Maïca Clavel, Daniel L. Walker, Dani Lipman, H Perry Hatchfield, Régis Terrier   +7 more
doaj   +1 more source

ALMA Observations of a Quiescent Molecular Cloud in the Large Magellanic Cloud

, 2017
We present high-resolution (sub-parsec) observations of a giant molecular cloud in the nearest star-forming galaxy, the Large Magellanic Cloud. ALMA Band 6 observations trace the bulk of the molecular gas in $^{12}$CO(2-1) and high column density regions
Bandurski, Jeffrey B., Bernard, Jean-Philippe, Cao, Yixian, Chen, C. -H. Rosie, Chu, You-hua, Cui, Chaoyue, Fukui, Yasuo, Hughes, Annie, Indebetouw, Rémy, Kawamura, Akiko, Montier, Ludovic, Muller, Erik, Onishi, Toshikazu, Ott, Juergen, Paradis, Deborah, Pineda, Jorge L., Roman-Duval, Julia, Rosolowsky, Erik, Sewiło, Marta, Tokuda, Kazuki, Wojciechowski, Evan, Wong, Tony   +21 more
core   +1 more source

The shapes of column density PDFs - The importance of the last closed contour [PDF]

, 2017
The probability distribution function of column density (PDF) has become the tool of choice for cloud structure analysis and star formation studies.
Alves, João, Lada, Charles, Lombardi, Marco   +2 more
core   +2 more sources