Results 61 to 70 of about 318,054 (345)

Thermal Effects of Ambipolar Diffusion during the Gravitational Collapse of a Radiative Cooling Filament

The Astrophysical Journal
In this study, we consider the effects of ambipolar diffusion during the gravitational collapse of a radiative cooling filamentary molecular cloud. Two separate configurations of magnetic field, i.e., axial and toroidal, are considered in the presence of
Mahmoud Gholipour
doaj   +1 more source

3C236: Radio Source, Interrupted? [PDF]

, 2001
We present new HST STIS/MAMA near-UV images and archival WFPC2 V and R band images which reveal the presence of four star forming regions in an arc along the edge of the dust lane in the giant (4 Mpc) radio galaxy 3C236.
Alexander P., André R. Martel, Anton M. Koekemoer, Barthel P. D., Baum S. A., Christiansen W. A., Christopher P. O’Dea, Ferdinando D. Macchetto, Fomalont E. B., Fomalont E. B., George K. Miley, Kotanyi C., Lara L., Mack K.-H., Mark G. Allen, Merritt D., Parma P., Scalo J., Scheuer P. A. G., Scheuer P. A. G., Schoenmakers A. P., Stefi A. Baum, Tribble P. C., van der Laan H., Waldram E. M., William B. Sparks, Willis A. G.   +26 more
core   +3 more sources

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

The Detection of Higher-order Millimeter Hydrogen Recombination Lines in the Large Magellanic Cloud

The Astrophysical Journal, 2023
We report the first extragalactic detection of the higher-order millimeter hydrogen recombination lines (Δ n > 2). The γ -, ϵ -, and η -transitions have been detected toward the millimeter continuum source N 105–1 A in the star-forming region N 105 in ...
Marta Sewiło, Kazuki Tokuda, Stan E. Kurtz, Steven B. Charnley, Thomas Möller, Jennifer Wiseman, C.-H. Rosie Chen, Remy Indebetouw, Álvaro Sánchez-Monge, Kei E. I. Tanaka, Peter Schilke, Toshikazu Onishi, Naoto Harada   +12 more
doaj   +1 more source

Star Formation Efficiency in the Central 1 kpc Region of Early-Type Spiral Galaxies [PDF]

, 2000
It has been reported recently that there are some early-type spiral (Sa--Sab) galaxies having evident star-forming regions which concentrate in their own central 1-kpc.
Akio K. Inoue, Buat V., Garcia-Barreto J. A., Genkin I. L., Hideyuki Kamaya, Hiroyuki Hirashita, Honma M., Inoue A. K., Kamaya H., Kamaya H., Read A. M., Sofue Y., Tomita A.   +12 more
core   +3 more sources

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk

The Astrophysical Journal Letters, 2023
We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions.
María Claudia Ramírez-Tannus, Arjan Bik, Lars Cuijpers, Rens Waters, Christiane Göppl, Thomas Henning, Inga Kamp, Thomas Preibisch, Konstantin V. Getman, Germán Chaparro, Pablo Cuartas-Restrepo, Alex de Koter, Eric D. Feigelson, Sierra L. Grant, Thomas J. Haworth, Sebastián Hernández, Michael A. Kuhn, Giulia Perotti, Matthew S. Povich, Megan Reiter, Veronica Roccatagliata, Elena Sabbi, Benoît Tabone, Andrew J. Winter, Anna F. McLeod, Roy van Boekel, Sierk E. van Terwisga   +26 more
doaj   +1 more source

Wide-field Infrared Survey Explorer Observations of the Evolution of Massive Star-forming Regions [PDF]

, 2011
We present the results of a mid-infrared survey of 11 outer Galaxy massive star-forming regions and 3 open clusters with data from the Wide-field Infrared Survey Explorer (WISE).
Assef, R. J., Benford, D. J., Koenig, X. P., Leisawitz, D. T., Padgett, D. L., Rebull, L. M.   +5 more
core  

Probing the Super Star Cluster Environment of NGC 1569 Using FISICA [PDF]

, 2012
We present near-IR JH spectra of the central regions of the dwarf starburst galaxy NGC 1569 using the Florida Image Slicer for Infrared Cosmology and Astrophysics (FISICA).
Boreman, G., Clark, D. M., Eikenberry, S. S., Elston, R., Glenn, P. E., Gruel, N., Guzman, R., Raines, S. N.   +7 more
core   +1 more source

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

FEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro, Marco Cellani, Cristina Scielzo   +2 more
wiley   +1 more source