Results 81 to 90 of about 50,322 (326)

White dwarfs and Galactic dark matter [PDF]

, 2002
We discuss the recent discovery by Oppenheimer et al (2001) of old, cool white dwarf stars, which may be the first direct detection of Galactic halo dark matter.
Flynn, Chris, Holmberg, Johan, Holopainen, Janne   +2 more
core   +3 more sources

STELLAR KINEMATICS OF THE ANDROMEDA II DWARF SPHEROIDAL GALAXY [PDF]

The Astrophysical Journal, 2012
14 pages, 10 figures, 4 tables, accepted for publication in ...
Ho, Nhung, Geha, M., Munoz, R. R., Guhathakurta, P., Kalirai, J., Gilbert, K. M., Tollerud, E., Bullock, J., Beaton, R. L., Majewski, S. R.   +9 more
openaire   +5 more sources

Colloidal Heterostructures Enable Interfacial Transport of Immiscible Molecules in Printable Organohydrogels

Advanced Materials, EarlyView.
Multiphase printable organohydrogels with tunable microstructures are developed to control molecular transport pathways for immiscible cargo. The tortuosity and domain size of the colloidal phases are tuned by adjusting temperature and shear during processing, which enables the tailoring of diffusion kinetics due to different transport pathways.
Riley E. Dowdy‐Green, Rony Waheibi, Nazanin Shakoury, Yuemei Ye, Lilian C. Hsiao   +4 more
wiley   +1 more source

Metal-poor Stars in the MW Disk: Resonant Cooling of Vertical Oscillations of Halo Stars in Barred Galaxies

The Astrophysical Journal Letters
Using numerical simulations of a barred disk galaxy embedded in nonspinning and spinning dark matter (DM) halos, we present a novel mechanism of “cooling” the vertical oscillations of DM particles, which acquire disk kinematics.
Xingchen Li, Isaac Shlosman, Daniel Pfenniger, Clayton Heller   +3 more
doaj   +1 more source

Radially extended kinematics and stellar populations of the massive ellipticals NGC1600, NGC4125 and NGC7619. Constraints on the outer dark halo density profile

, 2010
We present high quality long slit spectra along the major and minor axes out to 1.5-2 Re (14-22 kpc) of three bright elliptical galaxies (NGC1600, NGC4125, NGC7619) obtained at the Hobby-Eberly Telescope (HET).
Bender, Bender, Bender, Bender, Bender, Bender, Bender, Bender, Bernardi, Bertola, Bower, Bridges, Burstein, Cappellari, Clemens, Collobert, Condon, Davies, Denicoló, Djorgovski, Dressler, Faber, Fisher, Fisher, Franx, Fukazawa, Gerhard, Goudfrooij, Halkola, Hernquist, Humphrey, J. Thomas, Kauffmann, Kim, Kobayashi, Kodama, Koopmans, Korn, Kroupa, Kuntschner, Larson, Larson, Li, Longhetti, Longhetti, M. H. Fabricius, Magorrian, Maraston, Maraston, Matkovic, Mehlert, Morelli, Naab, Napolitano, Navarro, Nieto, Nomoto, O'Sullivan, Peletier, Puzia, R. Bender, R. P. Saglia, Rembold, Richstone, S. B. Pu, Saglia, Saglia, Sandage, Sarzi, Schwarzschild, Scott, Serra, Shetrone, Sánchez-Blázquez, Sánchez-Blázquez, Tantalo, Tantalo, Terlevich, Thielemann, Thomas, Thomas, Thomas, Thomas, Thomas, Thomas, Thomas, Thomas, Tinsley, Tinsley, Trager, Trager, Trager, Trager, van Dokkum, Vazdekis, Weijmans, White, White, Wiklind, Worthey, Worthey, Z. Han, Ziegler   +102 more
core   +1 more source

Injunction Against Prosecution of Divorce Actions in Other States [PDF]

, 1940
Aims: The formation scenario of extended counter-rotating stellar disks in galaxies is still debated. In this paper, we study the S0 galaxy IC 719 known to host two large-scale counter-rotating stellar disks in order to investigate their formation ...
Coccato, L., Corsini, E., Dalla Bontà, E., Fabricius, M., Morelli, L., Pizzella, A., Saglia, R.   +6 more
core   +3 more sources

Stellar kinematics in the Galactic center

The Astrophysical Journal, 1989
The observations of the stellar kinematics in the central 8 pc of the Galaxy are presented. It is shown that the spectroscopy of the 2.3 microns CO absorption feature, in late type stars, yields the stellar velocity dispersion and the average stellar radial velocity as a function of galactocentric distance.
M. T. McGinn, K. Sellgren, E. E. Becklin, D. N. B. Hall   +3 more
openaire   +1 more source

Recent Advances in Collective Behaviors of Micro/Nanomotor Swarms

Advanced Materials, EarlyView.
This review describes the driving forces behind collective motion, explores the self‐organization of micro/nano swarms across zero‐dimensional (0D), one‐dimensional (1D), two‐dimensional (2D), and three‐dimensional (3D) spaces, and highlights their potential in drug delivery, environmental monitoring, and smart devices.
Siwen Sun, Bingbing Sun, Alexander B. Cook, Tania Patiño Padial, Jan C. M. van Hest   +4 more
wiley   +1 more source

The Angular Momentum of Stars Reflects the Relationship between Star-forming Environment and Galactic Evolution History

The Astrophysical Journal
This study focuses on stars with masses above the Kraft break in the Kepler field. Their rotational angular momenta are essentially the same as those at the zero-age main sequence.
Yu-Fu Shen, Yan Xu, Yi-Bo Wang, Xiu-Lin Huang, Xing-Xing Hu, Qi Yuan   +5 more
doaj   +1 more source

Spatially resolved kinematics, galactic wind, and quenching of star formation in the luminous infrared galaxy IRAS F11506-3851

, 2014
We present a multi-wavelength integral field spectroscopic study of the low-z LIRG IRAS F11506-3851, on the basis of VIMOS and SINFONI (ESO-VLT) observations.
Arribas, S., Bellocchi, E., Cazzoli, S., Colina, L., Emonts, B., Maiolino, R., Piqueras-Lopez, J.   +6 more
core   +1 more source