Results 51 to 60 of about 80,963 (169)

Dynamics of Cosmic Neutrinos in Galaxies

Open Astronomy, 2014
The cosmic background of massive (about 1 eV rest-energy) neutrinos can be cooled to extremely low temperatures, reaching almost completely degenerated state. The Fermi velocity of the neutrinos becomes less than 100 km/s.
Sapar A.
doaj   +1 more source

You Are What You Eat: The Circumgalactic Medium around BreakBRD Galaxies Has Low Mass and Angular Momentum

The Astrophysical Journal, 2023
Observed breakBRD (“break bulges in red disks”) galaxies are a nearby sample of face-on disk galaxies with particularly centrally concentrated star formation: they have red disks but recent star formation in their centers as measured by the D _n 4000 ...
Stephanie Tonnesen, Daniel DeFelippis, Sarah Tuttle   +2 more
doaj   +1 more source

Origin of Non-axisymmetric Features of Virgo Cluster Early-type Dwarf Galaxies. I. Bar Formation and Recurrent Buckling

, 2017
A fraction of early-type dwarf galaxies in the Virgo cluster have a disk component and even possess disk features such as bar, lens, and spiral arms.
Kim, Suk, Kim, Woong-Tae, Kwak, SungWon, Rey, Soo-Chang, 김웅태   +4 more
core   +1 more source

The Role of Cold Flows in the Assembly of Galaxy Disks [PDF]

, 2008
We use high resolution cosmological hydrodynamical simulations to demonstrate that cold flow gas accretion, particularly along filaments, modifies the standard picture of gas accretion and cooling onto galaxy disks.
Brook, C. B., Brooks, A. M., Governato, F., Quinn, T., Wadsley, J.   +4 more
core   +2 more sources

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

COSMOS-Web: The Role of Galaxy Interactions and Disk Instabilities in Producing Starbursts at z < 4

The Astrophysical Journal
We study of the role of galaxy–galaxy interactions and disk instabilities in producing starburst activity in galaxies out to z = 4. For this, we use a sample of 387 galaxies with robust total star formation rate measurements from Herschel, gas masses ...
Andreas L. Faisst, Lilan Yang, M. Brinch, C. M. Casey, N. Chartab, M. Dessauges-Zavadsky, N. E. Drakos, S. Gillman, G. Gozaliasl, C. C. Hayward, O. Ilbert, P. Jablonka, A. Kaminsky, J. S. Kartaltepe, A. M. Koekemoer, V. Kokorev, E. Lambrides, D. Liu, C. Maraston, C. L. Martin, A. Renzini, B. E. Robertson, D. B. Sanders, Z. Sattari, N. Scoville, C. M. Urry, A. P. Vijayan, J. R. Weaver, H. B. Akins, N. Allen, R. C. Arango-Toro, O. R. Cooper, M. Franco, F. Gentile, S. Harish, M. Hirschmann, A. A. Khostovan, C. Laigle, R. L. Larson, M. Lee, Z. Liu, A. S. Long, G. Magdis, R. Massey, H. J. McCracken, J. McKinney, L. Paquereau, J. Rhodes, R. M. Rich, M. Shuntov, J. D. Silverman, M. Talia, S. Toft, J. A. Zavala   +53 more
doaj   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

Enhanced dust heating in the bulges of early-type spiral galaxies [PDF]

, 2010
Stellar density and bar strength should affect the temperatures of the cool (T ~ 20–30 K) dust component in the inner regions of galaxies, which implies that the ratio of temperatures in the circumnuclear regions to the disk should depend on Hubble type.
Appleton, P. N., Armus, L., Beirão, P., Engelbracht, C. W., Murphy, E. J.   +4 more
core  

Chemo-dynamical evolution of Globular Cluster Systems

, 2002
We studied the relation between the ratio of rotational velocity to velocity dispersion and the metallicity (/\sigma_{v}-metallicity relation) of globular cluster systems (GCS) of disk galaxies by comparing the relation predicted from simple chemo ...
Arimoto N., Burton W. B., Frenk C. S., Georgiev T. B., Georgiev T. B., Kinman T. D., Kissler-Patig M., Maline G., Masanori Iye, Miyamoto M., Patsis P. A., Rees M. J., Tinsley B. M., van der Hulst J. M., Yoshihiko Saito, Zepf S. E.   +15 more
core   +2 more sources