Results 31 to 40 of about 13,169 (193)

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

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

Hierarchical structure of the interstellar molecular clouds and star formation

Open Astronomy, 2017
Properties of the hierarchical structures of interstellar molecular clouds are discussed. Particular attention is paid to the statistical correlations between velocity dispersion and size, and between the magnetic field strength and gas density.
Dudorov Alexander E., Khaibrakhmanov Sergey A.   +1 more
doaj   +1 more source

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

Formation of Cold Filamentary Structure from Wind Blown Superbubbles [PDF]

, 2010
The expansion and collision of two wind-blown superbubbles is investigated numerically. Our models go beyond previous simulations of molecular cloud formation from converging gas flows by exploring this process with realistic flow parameters, sizes and ...
Andreas Burkert, Ballesteros-Paredes, Bergin, Burkert, Burkert, de Avillez, Dobbs, Evangelia Ntormousi, Fabian Heitsch, Gazol, Gazol, Hartmann, Hartmann, Hartmann, Heiles, Heitsch, Heitsch, Heitsch, Heitsch, Heitsch, Hennebelle, Katharina Fierlinger, Kim, Kim, Kolmogorov, Koyama, Lada, Lada, Myers, Verschuur, Vázquez-Semadeni, Vázquez-Semadeni, Williams, Yang   +33 more
core   +3 more sources

Discovery of Extensive Optical Emission Associated with the X-ray Bright, Radio Faint Galactic SNR G156.2+5.7 [PDF]

, 2006
We present wide-field Halpha images of the Galactic supernova remnant G156.2+5.7 which reveal the presence of considerable faint Halpha line emission coincident with the remnant's X-ray emission. The outermost Halpha emission consists largely of long and
Fesen, Robert A., Gerardy, Christopher L.   +1 more
core   +4 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

PHANGS–JWST First Results: The Dust Filament Network of NGC 628 and Its Relation to Star Formation Activity

The Astrophysical Journal Letters, 2023
PHANGS–JWST mid-infrared (MIR) imaging of nearby spiral galaxies has revealed ubiquitous filaments of dust emission in intricate detail. We present a pilot study to systematically map the dust filament network (DFN) at multiple scales between 25 and 400 ...
David A. Thilker, Janice C. Lee, Sinan Deger, Ashley T. Barnes, Frank Bigiel, Médéric Boquien, Yixian Cao, Mélanie Chevance, Daniel A. Dale, Oleg V. Egorov, Simon C. O. Glover, Kathryn Grasha, Jonathan D. Henshaw, Ralf S. Klessen, Eric Koch, J. M. Diederik Kruijssen, Adam K. Leroy, Ryan A. Lessing, Sharon E. Meidt, Francesca Pinna, Miguel Querejeta, Erik Rosolowsky, Karin M. Sandstrom, Eva Schinnerer, Rowan J. Smith, Elizabeth J. Watkins, Thomas G. Williams, Gagandeep S. Anand, Francesco Belfiore, Guillermo A. Blanc, Rupali Chandar, Enrico Congiu, Eric Emsellem, Brent Groves, Kathryn Kreckel, Kirsten L. Larson, Daizhong Liu, Ismael Pessa, Bradley C. Whitmore   +38 more
doaj   +1 more source

An Origin of Narrow Extended Structure in the Interstellar Medium: An Interstellar Contrail Created by a Fast-moving Massive Object

The Astrophysical Journal, 2023
We investigate the thermal condensation caused by a massive object that passes through the interstellar medium with high velocity, and propose a mechanism for creating a filamentary gaseous object, or interstellar contrail.
Kanta Kitajima, Shu-ichiro Inutsuka
doaj   +1 more source