Results 41 to 50 of about 13,169 (193)

A High-Resolution Survey of HI Absorption toward the Central 200 pc of the Galactic Center [PDF]

, 2010
We present an HI absorption survey of the central 250 pc of the Galaxy. Very Large Array (VLA) observations were made at 21 cm in the DnC and CnB configurations and have a resolution of ~15"(0.6 pc at the Galactic Center (GC) distance) and a velocity ...
Binney, Claudia Cyganowski, Cohen, Cohen, Coil, Cornelia C. Lang, Dwarakanath, Egan, Figer, Figer, Kelsey I. Clubb, Lang, Lang, Lang, LaRosa, Lazio, Liszt, Liszt, McGary, Oka, Oka, Radhakrishnan, Schwarz, Schwarz, Serabyn, Serabyn, van der Hulst, van der Werf, W. M. Goss, Yusef-Zadeh   +29 more
core   +1 more source

RadFil: A Python Package for Building and Fitting Radial Profiles for Interstellar Filaments [PDF]

The Astrophysical Journal, 2018
Abstract We present RadFil, a publicly available Python package that gives users full control over how to build and fit radial profiles for interstellar filaments. RadFil builds filament profiles by taking radial cuts across the spine of a filament, thereby preserving the radial structure of the filament across its entire length.
Catherine Zucker, Hope How-Huan Chen
openaire   +2 more sources

Supervised machine learning on Galactic filaments

Astronomy & Astrophysics, 2023
Context. Filaments are ubiquitous in the Galaxy, and they host star formation. Detecting them in a reliable way is therefore key towards our understanding of the star formation process. Aims. We explore whether supervised machine learning can identify filamentary structures on the whole Galactic plane. Methods.
Zavagno A., Dupé F. X., Bensaid S., Schisano E., Li Causi, G. Gray, M. Molinari, S. Elia, D. Lambert, J. -C., Brescia M., Arzoumanian D., Russeil D., Riccio G., Cavuoti S.   +14 more
openaire   +4 more sources

The Role of Magnetic Field in Molecular Cloud Formation and Evolution

Frontiers in Astronomy and Space Sciences, 2019
We review the role that magnetic field may have on the formation and evolution of molecular clouds. After a brief presentation and main assumptions leading to ideal MHD equations, their most important correction, namely the ion-neutral drift is described.
Patrick Hennebelle, Patrick Hennebelle, Shu-ichiro Inutsuka   +2 more
doaj   +1 more source

A multifrequency study of the active star forming complex NGC6357. I. Interstellar structures linked to the open cluster Pis24 [PDF]

, 2011
We investigate the distribution of the gas (ionized, neutral atomic and molecular), and interstellar dust in the complex star forming region NGC6357 with the goal of studying the interplay between the massive stars in the open cluster Pis24 and the ...
Benjamin, Bohigas, C. E. Cappa, Cesarsky, Churchwell, Cichowolski, Damke, E. Fernández Lajús, E. M. Arnal, Fazio, Felli, Haynes, Hester, Hester, Hildebrand, Inoue, J. Vasquez, Kutner, Lortet, Marston, Martins, Massey, Massi, Maíz, McBreen, Mezger, Murphy, N. U. Duronea, Neckel, Penzias, Persi, Prinja, Quireza, R. Barbá, Russeil, Shaver, Ulich, Vacca, van der Hucht, W. M. Goss, Walborn, Wang, Watson, Watson, Westmoquette, Wilson   +45 more
core   +2 more sources

H₂absorption in a dense interstellar filament in the Milky Way halo [PDF]

Astronomy & Astrophysics, 2003
12 pages, 6 figures; accepted for publication in A& ...
Richter, P., Sembach, K. R., Howk, J. C.
openaire   +2 more sources

The Cassiopeia Filament: A Blown Spur of the Local Arm

The Astronomical Journal, 2022
We present wide-field and high-sensitivity CO(1–0) molecular line observations toward the Cassiopeia region, using the 13.7 m millimeter telescope of the Purple Mountain Observatory.
Xuepeng Chen, Li Sun, Jiancheng Feng, Shiyu Zhang, Weihua Guo, Xiaoyun Xu, Yang Su, Yan Sun, Shaobo Zhang, Xin Zhou, Zhiwei Chen, Qing-Zeng Yan, Miaomiao Zhang, Min Fang, Ji Yang   +14 more
doaj   +1 more source

Local stability of a gravitating filament: a dispersion relation

, 2014
Filamentary structures are ubiquitous in astrophysics and are observed at various scales. On a cosmological scale, matter is usually distributed along filaments, and filaments are also typical features of the interstellar medium. Within a cosmic filament,
Combes, Françoise, Freundlich, Jonathan, Jog, Chanda J.   +2 more
core   +2 more sources

TRAO Survey of Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO-FUNS). III. Filaments and Dense Cores in the NGC 2068 and NGC 2071 Regions of Orion B

The Astrophysical Journal, 2023
We present the results of molecular line observations performed toward the NGC 2068 and NGC 2071 regions of the Orion B cloud as the TRAO-FUNS project to study the roles of the filamentary structure in the formation of dense cores and stars in the clouds.
Hyunju Yoo, Chang Won Lee, Eun Jung Chung, Shinyoung Kim, Mario Tafalla, Paola Caselli, Philip C. Myers, Kyoung Hee Kim, Tie Liu, Woojin Kwon, Archana Soam, Jongsoo Kim   +11 more
doaj   +1 more source

B-fields and Dust in Interstellar Filaments Using Dust Polarization (BALLAD-POL). I. The Massive Filament G11.11–0.12 Observed by SOFIA/HAWC+

The Astrophysical Journal, 2023
Abstract We report the first measurement of polarized thermal dust emission toward the entire infrared dark cloud G11.11−0.12 taken by the polarimeter SOFIA/HAWC+ at 214 μm. The obtained magnetic fields (B-fields) from the polarized emission of the early-stage and massive filament tend to be perpendicular to its spine.
Nguyen Bich Ngoc, Pham Ngoc Diep, Thiem Hoang, Le Ngoc Tram, Nguyen Chau Giang, Ngân Lê, Duc Thuong Hoang, Nguyen Thi Phuong, Nguyen Minh Khang, Dieu D. Nguyen, Bao Truong   +10 more
openaire   +3 more sources