Results 41 to 50 of about 13,210 (208)

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

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

Filamentary Dust Polarization and the Morphology of Neutral Hydrogen Structures

The Astrophysical Journal
Filamentary structures in neutral hydrogen (H i ) emission are well aligned with the interstellar magnetic field, so H i emission morphology can be used to construct templates that strongly correlate with measurements of polarized thermal dust emission ...
George Halal, Susan E. Clark, Ari Cukierman, Dominic Beck, Chao-Lin Kuo   +4 more
doaj   +1 more source

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

Far-infrared polarimetry from the Stratospheric Observatory for Infrared Astronomy [PDF]

, 2007
Multi-wavelength imaging polarimetry at far-infrared wavelengths has proven to be an excellent tool for studying the physical properties of dust, molecular clouds, and magnetic fields in the interstellar medium.
Chuss, D. T., Crutcher, R. M., Dotson, J. L., Dowell, C. D., Harper, D. A., Hildebrand, R. H., Jones, T. J., Lazarian, A., Novak, G., Vaillancourt, J. E., Werner, M. W.   +10 more
core   +2 more sources

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

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

Magnetic structure of our Galaxy: A review of observations

, 2009
The magnetic structure in the Galactic disk, the Galactic center and the Galactic halo can be delineated more clearly than ever before. In the Galactic disk, the magnetic structure has been revealed by starlight polarization within 2 or 3 kpc of the ...
Battaner, Han, Han, Han, Han, Han, Heiles, JinLin Han, Junkes, Mathewson, Men, Mitra, Prouza, Qiao, Roy, Sun, Sun, Sun   +17 more
core   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Dusty globules in the Crab Nebula

, 2016
From existing broad-band images obtained with the Hubble Space Telescope, we located 92 globules, for which we derived positions, dimensions, orientations, extinctions, masses, proper motions, and their distributions. The globules have mean radii ranging
Elfgren, Erik, Gahm, Gösta F., Grenman, Tiia   +2 more
core   +1 more source