onr:"swepub:oai:research.chalmers.se:8f136338-51a8-41d3-b78c-25df08e84796"
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04663naa a2200577 4500 | |
| 001 | oai:research.chalmers.se:8f136338-51a8-41d3-b78c-25df08e84796 | |
| 003 | SwePub | |
| 008 | 230831s2023 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://doi.org/10.1093/mnras/stad22832 DOI |
| 024 | 7 | a https://research.chalmers.se/publication/5372212 URI |
| 040 | a (SwePub)cth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Pandhi, A.u University of Toronto4 aut |
| 245 | 1 0 | a Alignment of dense molecular core morphology and velocity gradients with ambient magnetic fields |
| 264 | 1 | c 2023 |
| 338 | a electronic2 rdacarrier | |
| 520 | a Studies of dense core morphologies and their orientations with respect to gas flows and the local magnetic field have been limited to only a small sample of cores with spectroscopic data. Leveraging the Green Bank Ammonia Survey alongside existing sub-millimeter continuum observations and Planck dust polarization, we produce a cross-matched catalogue of 399 dense cores with estimates of core morphology, size, mass, specific angular momentum, and magnetic field orientation. Of the 399 cores, 329 exhibit 2D v(LSR) maps that are well fit with a linear gradient, consistent with rotation projected on the sky. We find a best-fit specific angular momentum and core size relationship of J/M & PROP; R-1.82 & PLUSMN; 0.10, suggesting that core velocity gradients originate from a combination of solid body rotation and turbulent motions. Most cores have no preferred orientation between the axis of core elongation, velocity gradient direction, and the ambient magnetic field orientation, favouring a triaxial and weakly magnetized origin. We find, however, strong evidence for a preferred anti-alignment between the core elongation axis and magnetic field for protostellar cores, revealing a change in orientation from starless and prestellar populations that may result from gravitational contraction in a magnetically-regulated (but not dominant) environment. We also find marginal evidence for anti-alignment between the core velocity gradient and magnetic field orientation in the L1228 and L1251 regions of Cepheus, suggesting a preferred orientation with respect to magnetic fields may be more prevalent in regions with locally ordered fields. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Fysikx Fusion, plasma och rymdfysik0 (SwePub)103032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Fusion, Plasma and Space Physics0 (SwePub)103032 hsv//eng |
| 653 | a ISM: kinematics and dynamics | |
| 653 | a stars: formation | |
| 653 | a ISM: evolution | |
| 653 | a ISM: structure | |
| 653 | a ISM: clouds | |
| 653 | a ISM: magnetic fields | |
| 700 | 1 | a Friesen, R. K.u University of Toronto4 aut |
| 700 | 1 | a Fissel, L.u Queen's University4 aut |
| 700 | 1 | a Pineda, J. E.u Max-Planck-Institut für extraterrestrische Physik,Max Planck Institute for Extraterrestrial Physics4 aut |
| 700 | 1 | a Chen, M. C-Yu Queen's University4 aut |
| 700 | 1 | a Di Francesco, J.u University of Victoria,National Research Council Canada4 aut |
| 700 | 1 | a Ginsburg, A.u University of Florida4 aut |
| 700 | 1 | a Kirk, H.u National Research Council Canada,University of Victoria4 aut |
| 700 | 1 | a Myers, P. C.u Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Offner, S. S. R.u The University of Texas at Austin, USA4 aut |
| 700 | 1 | a Punanova, Anna,d 1989u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)punanova |
| 700 | 1 | a Quan, F.u University of Toronto4 aut |
| 700 | 1 | a Redaelli, E.u Max-Planck-Institut für extraterrestrische Physik,Max Planck Institute for Extraterrestrial Physics4 aut |
| 700 | 1 | a Rosolowsky, E.u University of Alberta4 aut |
| 700 | 1 | a Scibelli, S.u University of Arizona4 aut |
| 700 | 1 | a Seo, Y. M.u California Institute of Technology (Caltech)4 aut |
| 700 | 1 | a Shirley, Y.u University of Arizona4 aut |
| 710 | 2 | a University of Torontob Queen's University4 org |
| 773 | 0 | t Monthly Notices of the Royal Astronomical Societyg 525:1, s. 364-392q 525:1<364-392x 0035-8711x 1365-2966 |
| 856 | 4 | u https://research.chalmers.se/publication/537221/file/537221_Fulltext.pdfx primaryx freey FULLTEXT |
| 856 | 4 8 | u https://doi.org/10.1093/mnras/stad2283 |
| 856 | 4 8 | u https://research.chalmers.se/publication/537221 |
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