Results 21 to 30 of about 13,210 (208)

A systematic bias in fitting the surface-density profiles of interstellar filaments [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT The surface-density profiles (SDPs) of dense filaments, in particular those traced by dust emission, appear to be well fit with Plummer profiles, i.e. Σ(b) = ΣB + ΣO{1 + [b/wO]2}[1 − p]/2. Here, $\, \Sigma _{{\rm B}}$ is the background surface density;  ΣB + ΣO is the surface density on the filament spine;  b is the impact ...
Whitworth, A. P., Priestley, F. D., Arzoumanian, D.   +2 more
openaire   +4 more sources

Evolution of dust properties in an interstellar filament [PDF]

Astronomy & Astrophysics, 2003
We present submillimetre observations obtained using the balloon-borne experiment PRONAOS/SPM, from 200 to 600 μm with an angular resolution of 2-3.5', of a quiescent dense filament (typically A V ∼ 4) in the Taurus molecular complex. This filament, like many other molecular clouds, presents a deficit in its IRAS I 6 0 μ m /I 1 0 0 μ m flux ...
B. Stepnik, A. Abergel, J.-P. Bernard, F. Boulanger, L. Cambrésy, M. Giard, A. P. Jones, G. Lagache, J.-M. Lamarre, C. Meny, F. Pajot, F. Le Peintre, I. Ristorcelli, G. Serra, J.-P. Torre   +14 more
openaire   +1 more source

Why (Still) Studying Turbulence in Fluids and Plasmas?

Perspectives of Earth and Space Scientists, Volume 4, Issue 1, December 2023., 2023
Abstract Turbulence, a captivating and intricate phenomenon, continues to attract researchers across diverse scientific disciplines. Despite considerable efforts, turbulence remains a fascinating challenge and stands as one of the unsolved enigmas in classical physics.
Tommaso Alberti, Roberto Benzi, Vincenzo Carbone   +2 more
wiley   +1 more source

Chirality in Light–Matter Interaction

Advanced Materials, Volume 35, Issue 34, August 24, 2023., 2023
Recent advances in nanofabricated optical metamaterials designed to enhance the interaction between optical and structural chirality are explored, focusing on the role of chirality in biological systems and its use in current biosensing applications.
Andrew Lininger, Giovanna Palermo, Alexa Guglielmelli, Giuseppe Nicoletta, Madhav Goel, Michael Hinczewski, Giuseppe Strangi   +6 more
wiley   +1 more source

Ionisation impact of high-mass stars on interstellar filaments [PDF]

Astronomy & Astrophysics, 2013
Context. Ionising stars reshape their original molecular cloud and impact star formation, leading to spectacular morphologies such as bipolar nebulae around HII regions. Molecular clouds are structured in filaments where stars principally form, as revealed by the Herschel space observatory.
Minier, V., Tremblin, P., Hill, T., Motte, F., André, Ph., Lo, N., Schneider, N., Audit, E., White, G. J., Hennemann, M., Cunningham, M., Deharveng, L., Didelon, P., Di Francesco, J., Elia, D., Giannini, T., Nguyen Luong, Q., Pezzuto, S., Rygl, K. L. J., Spinoglio, L., Ward-Thompson, D., Zavagno, A.   +21 more
openaire   +6 more sources

Evidence for dust evolution within the Taurus Complex from Spitzer images [PDF]

, 2009
We present Spitzer images of the Taurus Complex (TC) and take advantage of the sensitivity and spatial resolution of the observations to characterize the diffuse IR emission across the cloud.
A. Noriega-Crespo, Bernard, Bernard, Boulanger, Boulanger, C. E. McCabe, Cambrésy, D. L. Padgett, Draine, Draine, Désert, E. Falgarone, F. Boulanger, Falgarone, Fazio, Flagey, Goldsmith, Harju, Hartmann, Jones, Kelsall, L. M. Rebull, Lagache, M. A. Miville-Deschênes, Maezawa, Miville-Deschênes, N. Flagey, Nakamura, Padoan, Palla, Pratap, R. Paladini, Rachford, Rieke, Ristorcelli, S. J. Carey, Schnee, Schnee, Schnee, Shenoy, Sofia, Sunada, T. L. Huard, T. Y. Brooke, Tielens, Weingartner, Whittet, Whittet, Whittet, Wolkovitch, Yan   +50 more
core   +3 more sources

Turbulence in Atomic Hydrogen [PDF]

, 1998
Understanding the properties of interstellar turbulence is a great intellectual challenge and the urge to solve this problem is partially motivated by a necessity to explain the star formation mystery.
Lazarian, A.
core   +2 more sources

MAGNETICALLY DOMINATED PARALLEL INTERSTELLAR FILAMENTS IN THE INFRARED DARK CLOUD G14.225-0.506* [PDF]

The Astrophysical Journal, 2016
ABSTRACT The infrared dark cloud G14.225-0.506 (IRDC G14.2) displays a remarkable complex of parallel dense molecular filaments projected on the plane of the sky. Previous studies of dust emission and molecular lines have speculated whether magnetic fields could have played an important role in the formation of such elongated structures,
Fábio P. Santos, Gemma Busquet, Gabriel A. P. Franco, Josep Miquel Girart, Qizhou Zhang   +4 more
openaire   +2 more sources

Feedback from young stars, the molecular signature of shocks and outflows [PDF]

EPJ Web of Conferences, 2022
Why do we study shocks ? Because they are there. Shocks are ubiquitous in the interstellar medium (ISM), where they constitute a major source of energy injection, together with photons and cosmic rays (CRs).
Gusdorf Antoine
doaj   +1 more source

Panoramic Views of the Cygnus Loop [PDF]

, 1998
We present a complete atlas of the Cygnus Loop supernova remnant in the light of [O III] (5007), H alpha, and [S II] (6717, 6731). Despite its shell-like appearance, the Cygnus Loop is not a current example of a Sedov-Taylor blast wave.
Ballet J., Braun R., Claver C. F., Cox D. P., Falle S. A. E. G., Green D. A., Greidanus H., Hanson G. J., Hubble E. P., James R. Graham, Keen N. J., Luke D. Keller, Maeder A., Matthew J. Richter, N. A. Levenson, Oort J. H., Shull P., Jr., Vink J.   +17 more
core   +2 more sources