Results 101 to 110 of about 241,163 (335)

White dwarf cooling sequences and cosmochronology

EPJ Web of Conferences, 2013
The evolution of white dwarfs is a simple gravothermal process. This means that their luminosity function, i.e. the number of white dwarfs per unit bolometric magnitude and unit volume as a function of bolometric magnitude, is a monotonically increasing ...
García-Berro E., Artigas A., Isern J.
doaj   +1 more source

The Evolving Faint-End of the Luminosity Function

, 2007
We investigate the evolution of the faint-end slope of the luminosity function, $\alpha$, using semi-analytical modeling of galaxy formation. In agreement with observations, we find that the slope can be fitted well by $\alpha (z) =a+b z$, with a=-1.13 ...
Bower R. G., J. Silk, Khochfar S., R. A. Windhorst, R. E. Ryan, Jr., S. Khochfar, Windhorst R. A.   +6 more
core   +1 more source

Subgrain and Cavity Development during Creep of Al‐3.85%Mg

Advanced Engineering Materials, EarlyView.
Al‐3.85%Mg does form subgrains if crept at very high strains. This fact allows the unification of the creep description in two different alloys such as pure Al and Al–Mg alloys. It is classically considered that the creep mechanisms for type M (e.g., pure Al) and type A alloys (e.g., Al–Mg alloys) are different.
Augusta Isaac, Itziar Serrano‐Munoz, Aleksander Kostka, Martinus Putra Widjaja, Gaspar González‐Doncel, Giovanni Bruno, Ricardo Fernández   +6 more
wiley   +1 more source

Impacts of Luminosity in the Cab at Night on the Dynamic Distance of Visual Cognition

Advances in Mechanical Engineering, 2014
Suddenly encountering light sources at night will reduce drivers' dynamic distance of visual cognition. In order to investigate the law of quantitative changes of the visual recognition distance under the conditions of different speeds and different ...
Weihua Zhao, Wei Han, Ying Wen, Dongmei Zhang, Haoxue Liu   +4 more
doaj   +1 more source

High‐Temperature Oxidation of the CrFeNi Medium‐Entropy Alloy

Advanced Engineering Materials, EarlyView.
The oxidation behavior of equiatomic CrFeNi MEA is a key issue that determines this material's suitability for high‐temperature application. The understanding of long‐term behavior is even more crucial than short‐term corrosion effects. The alloy is exposed to synthetic air at 1000, 1050, and 1100 °C for 24, 100, and 1000 h and systematically compared ...
Anna Maria Manzoni, Wencke Mohring, Mike Schneider, Guillaume Laplanche, Sebastian Peter Hagen, Christiane Stephan‐Scherb   +5 more
wiley   +1 more source

The Globular Cluster Luminosity Function [PDF]

, 2006
The main aspects of the globular cluster luminosity function needing to be explained by a general theory of cluster formation are reviewed, and the importance of simultaneously understanding globular cluster systematics (the fundamental plane) within such a theory is pointed out.
openaire   +3 more sources

The Star Formation Rate Function of the Local Universe

, 2004
We have derived the bivariate luminosity function for the far ultraviolet (1530Angstroms) and far infrared (60 microns). We used matched GALEX and IRAS data, and redshifts from NED and PSC-z. We have derived a total star formation luminosity function phi(
Barlow, Tom A., Bianchi, Luciana, Buat, Veronique, Byun, Yong-Ik, Donas, Jose, Forster, Karl, Friedman, Peter G., Heckman, Timothy M., Inglesias-Paramo, Jorge, Jelinsky, Patrick N., Lee, Young-Wook, Madore, Barry F., Malina, Roger F., Martin, D. Christopher, Milliard, Bruno, Morrissey, Patrick F., Neff, Susan G., Rich, R. Michael, Schiminovich, David, Seibert, Mark, Siegmund, Oswald H. W., Small, Todd, Szalay, Alex S., Welsh, Barry Y., Wyder, Ted K.   +24 more
core   +3 more sources

CALPHAD‐Guided Prediction and Interpretation of Phase Formation in Ta–Mo–Cr–Ti–Al Refractory High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
This study designs Ta–Mo–Cr–Ti–Al refractory high‐entropy alloys with a disordered body‐centered‐cubic A2 crystal structure aiming for improved ductility, lower density, and oxidation resistance. Four alloy compositions are identified by thermodynamic calculations.
Kateryna Khanchych, Chongchong Tang, Carsten Schroer, Björn Schäfer, Judith Jung, Michael Dürrschnabel, Ute Jäntsch, Bronislava Gorr   +7 more
wiley   +1 more source

Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic Star Formation Rate Density 300 Myr after the Big Bang

The Astrophysical Journal
We characterize the earliest galaxy population in the JADES Origins Field, the deepest imaging field observed with JWST. We make use of ancillary Hubble Space Telescope optical images (five filters spanning 0.4–0.9 μ m) and novel JWST images with 14 ...
Brant Robertson, Benjamin D. Johnson, Sandro Tacchella, Daniel J. Eisenstein, Kevin Hainline, Santiago Arribas, William M. Baker, Andrew J. Bunker, Stefano Carniani, Phillip A. Cargile, Courtney Carreira, Stephane Charlot, Jacopo Chevallard, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Eiichi Egami, Ryan Hausen, Jakob M. Helton, Peter Jakobsen, Zhiyuan Ji, Gareth C. Jones, Roberto Maiolino, Michael V. Maseda, Erica Nelson, Pablo G. Pérez-González, Dávid Puskás, Marcia Rieke, Renske Smit, Fengwu Sun, Hannah Übler, Lily Whitler, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, Joris Witstok   +35 more
doaj   +1 more source

The GALEX UV luminosity function of the cluster of galaxies Abell 1367

, 2005
We present the GALEX NUV (2310 A) and FUV (1530 A) galaxy luminosity functions of the nearby cluster of galaxies A1367 in the magnitude range -20.3< M_AB < -13.3.
A. Boselli, A. S. Szalay, Andreon S., B. F. Madore, B. Milliard, B. Welsh, D. C. Martin, D. Schiminovich, Donas J., G. Gavazzi, J. Donas, J. Iglesias-Paramo, K. Forster, L. Bianchi, L. Cortese, M. A. Treyer, O. Siegmund, P. G. Friedman, P. Jelinsky, P. Morrissey, R. M. Rich, R. Malina, S. Neff, T. Barlow, T. K. Wyder, T. M. Heckman, T. Small, Y.-I. Byun, Y.-W. Lee   +28 more
core   +2 more sources