Results 61 to 70 of about 73,146 (266)

The 3-Dimensional Structure of NGC 891 and M51

, 2012
We investigate the three-dimensional structure of the nearby edge-on spiral galaxy NGC 891 using 3D Monte Carlo radiative transfer models, with realistic spiral structure and fractally clumped dust.
Andrew Schechtman-Rook, Bianchi, Fioc, Kamphuis, Kenneth Wood, Matthew A. Bershady, Popescu, Popescu, Thomas P. Robitaille, Xilouris   +9 more
core   +1 more source

Winter‐active spiders (Clubiona) have a hyperactive antifreeze protein with a unique beta‐solenoid fold

The FEBS Journal, EarlyView.
Antifreeze proteins from winter‐active spiders were purified using their affinity for ice. After LC–MSMS characterization, corresponding transcripts were identified. The antifreeze protein folds as a β‐solenoid with a large flat ice‐binding site on one surface and can bind to ice crystals and prevent their growth at −4 °C.
Laurie A. Graham, Stano Pekár, Ina M. Hainer, Peter L. Davies   +3 more
wiley   +1 more source

Galaxy Zoo: passive red spirals [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
MNRAS in press, 20 pages, 15 figures (v3)
Masters, Karen, Mosleh, Moein, Romer, A. Kathy, Nichol, Bob, Bamford, Steven P., Schawinski, Kevin, Lintott, Chris J., Andreescu, Dan, Campbell, Heather, Crowcroft, Ben, Doyle, Isabelle, Edmondson, Edward M., Murray, Phil, Raddick, M. Jordan, Slosar, Alexander S., Szalay, A., Vandenberg, Jan   +16 more
openaire   +6 more sources

PKS 1830-211: A Face-On Spiral Galaxy Lens [PDF]

, 2002
We present new Hubble Space Telescope images of the gravitational lens PKS 1830-211, which allow us to characterize the lens galaxy and update the determination of the Hubble constant from this system.
Brian A. McLeod, Christopher D. Impey, Christopher S. Kochanek, Djorgovski S., Emilio E. Falco, Guirado J. C., Hans‐Walter Rix, Joshua N. Winn, Pramesh Rao A., Refsdal S., Subrahmanyan R., Tully R. B.   +11 more
core   +2 more sources

Epidemiology and Genetics of Rheumatic Diseases Suggest a Constant Rate of DNA Damage as Underlying Cause

Immunology, EarlyView.
A constant rate of DNA damage that is not perfectly repaired will cause a constant rate of DNA mutations. The chance of mutation will increase if DNA is prone to damage, such as occurs in somatic hypermutation (SHM) hotspots and GC‐rich DNA. Thus, if one mutation‐prone DNA site drives disease, the age of onset of disease and degree of penetrance should
Piet C. de Groen
wiley   +1 more source

Magnetic fields in spiral galaxies [PDF]

The Astronomy and Astrophysics Review, 1990
Published in A&ARev (2016) 24 ...
openaire   +3 more sources

Automatic Detection of Galaxy Type From Datasets of Galaxies Image Based on Image Retrieval Approach

Scientific Reports, 2017
This paper presents a new approach for the automatic detection of galaxy morphology from datasets based on an image-retrieval approach. Currently, there are several classification methods proposed to detect galaxy types within an image.
Mohamed Abd El Aziz, I. M. Selim, Shengwu Xiong   +2 more
doaj   +1 more source

Spiral arm crossings inferred from ridges in Gaia stellar velocity distributions

, 2018
The solar neighborhood contains disc stars that have recently crossed spiral arms in the Galaxy. We propose that boundaries in local velocity distributions separate stars that have recently crossed or been perturbed by a particular arm from those that ...
Anders, Friedrich, Carrillo, Ismael, Chiappini, Cristina, Hilmi, Tariq, Khalatyan, Arman, McMillan, Paul, Minchev, Ivan, Monari, Giacomo, Quillen, Alice C., Steinmetz, Matthias   +9 more
core   +1 more source

The simulation of molecular clouds formation in the Milky Way [PDF]

, 2012
Using 3D hydrodynamic calculations we simulate formation of molecular clouds in the Galaxy. The simulations take into account molecular hydrogen chemical kinetics, cooling and heating processes.
A. M. Sobolev, A. V. Khoperskov, Amores, Asplund, Baba, Bakes, Balbus, Ballesteros-Paredes, Barnes, Beaumont, Begeman, Bergin, Binney, Blitz, Bobylev, Cazaux, Cen, Chou, Cohen, Cox, Dame, Dame, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Draine, E. O. Vasiliev, Elmegreen, Elmegreen, Elmegreen, Englmaier, Falgarone, Feldmann, Field, Fridman, Galli, Glover, Goldsmith, Habing, Heyer, Hollenbach, Hollenbach, Kalberla, Kauffmann, Khoperskov, Khoperskov, Kim, Kirsanova, Kwan, Lada, Lada, Larson, Lepine, Levine, Levinson, Mac Low, Maloney, McClure-Griffiths, McKee, Mishurov, Nelson, Rathborne, Roberts, Roberts, Rodriguez-Fernandez, Román-Duval, Román-Zúñiga, S. A. Khoperskov, Shetty, Shetty, Shu, Sofue, Solomon, Stecker, Sutherland, Tasker, Tielens, Tomisaka, Vallee, van Leer, Wada, Wada, Wada, Wada, Wolfire, Zhang   +88 more
core   +1 more source

A hitchhiker's guide to modern, practical cyanobacterial taxonomy

Journal of Phycology, EarlyView.
Abstract There has been an explosion of new Cyanobacterial taxa described within the last two decades. Cyanobacteria exhibit incredible ecological versatility and morphological variability, and thousands of species have already been described using “traditional” approaches (e.g., morphological features).
Petr Dvořák, Svatopluk Skoupý, Aleksandar Stanojković, Jeffrey R. Johansen, Chelsea Villanueva, Patrick Jung, Laura Briegel‐Williams, H. Dail Laughinghouse IV, Forrest W. Lefler, David E. Berthold, Jan Kaštovský, Anne C. Hurley, Dale A. Casamatta   +12 more
wiley   +1 more source