Results 91 to 100 of about 273,575 (267)

Formation ofin situstellar haloes in Milky Way-mass galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We study the formation of stellar haloes in three Milky Way-mass galaxies using cosmological smoothed particle hydrodynamics simulations, focusing on the subset of halo stars that form in situ, as opposed to those accreted from satellites. In situ stars in our simulations dominate the stellar halo out to 20 kpc and account for 30-40 per cent of its ...
Cooper, Andrew P., Parry, Owen H., Lowing, Ben, Cole, Shaun, Frenk, Carlos   +4 more
openaire   +3 more sources

Cis–Trans Rotational Isomerism of Formic Acid, Sulfur, and Selenium Analogues and Their Dimers: Chemical Kinetics Under Interstellar Conditions

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
wiley   +1 more source

Simulating molecular cloud regulated star formation in Galaxies [PDF]

, 2007
This thesis is primarily concerned with understanding the process of galaxy formation via the simulation of the interstellar medium, star formation and supernova feedback.
Booth, Craig Martin
core  

Stellar masses of SDSS-III BOSS galaxies at z~0.5 and constraints to galaxy formation models [PDF]

, 2013
We calculate stellar masses for ∼400 000 massive luminous galaxies at redshift ∼0.2–0.7 using the first two years of data from the Baryon Oscillation Spectroscopic Survey (BOSS).
Chen, Yanmei, Masters, Karen L., Bolton, Adam S., Malanushenko, Viktor, Tinker, Jeremy, Oravetz, Daniel, Pforr, Janine, Wake, David, Weaver, Benjamin A., Nichol, Robert C., Shelden, Alaina, Maraston, Claudia, Wake, David A., Brownstein, Joel R., Thomas, Daniel, Higgs, Tim, Capozzi, Diego, Skibba, Ramin A., Beifiori, Alessandra, Pan, Kaike, Schneider, Donald P., Steele, Oliver, York, Donald G., Snedden, Stephanie A., Henriques, Bruno M., Simmons, Audrey, Edmondson, Edd, Bizyaev, Dmitry, Oravetz, Daniel J., Bundy, Kevin, Brewington, Howard J., Malanushenko, Elena, Snedden, Stephanie, Brewington, Howard   +33 more
core   +1 more source

A low‐cost, portable polarizing digital light microscope for monitoring crystal growth and for crystal harvesting

Journal of Applied Crystallography, EarlyView.
A low‐cost, portable, medium‐resolution polarizing digital light microscope device for monitoring crystal growth and for crystal harvesting is described. The device can be used with a cell phone or a personal computer for real‐time imaging by professional and amateur scientists alike.Motivated by the need for a convenient way to demonstrate the growth ...
Sarah Kennedy, Ryan H. Huang, Wojciech Witek, Pawel Krawinski, Coilín Boland, Linjie Yang, Neal Leddy, Martin Caffrey   +7 more
wiley   +1 more source

Spatially resolved stellar-to-total dynamical mass relation

Astronomy & Astrophysics
Context. In our standard cosmological model, galaxy assembly is inherently linked to the hierarchical growth of dark matter halos, which provide the gravitational framework in which highly complex baryonic processes unfold.
Scholz-Díaz L., Gallazzi A. R., Zibetti S., Mattolini D.   +3 more
doaj   +1 more source

Response of Fecal Bacteria and Fungi to Tannin‐Rich Diets in Sika Deer (Cervus nippon): Evidence from Both Feeding Experiments and Field Investigations

Integrative Zoology, EarlyView.
Feeding with tannin‐rich diets altered the fecal microbial composition and increased the relative abundance of tannin‐degrading microbes. We hypothesize that fecal bacteria and fungi may play important roles in helping herbivores adapt to tannin‐rich diets but respond to different tannin concentrations varies.
Di Zhu, Feng Wu, Peiying Wen, Haiyang Gao, Xiaoran Hao, Hongfang Wang   +5 more
wiley   +1 more source

The SAMI Galaxy Survey revisiting Galaxy classification through high-order stellar kinematics. (2017)

, 2017
The SAMI instrument and Galaxy Survey is described in detail in Croom+ (2012MNRAS.421..872C) and Bryant+ (2015MNRAS.447.2857B). SAMI is a multi-object integral field spectrograph on the 3.9m Anglo Australian Telescope (AAT).
Ho, I.-Ting, McElroy, Rebecca, Leslie, Sarah K., Tonini, Chiara, Konstantopoulos, Iraklis S., Sweet, Sarah M., Groves, Brent, van de Sande, Jesse, Fogarty, Lisa M. R., Oh, Sree, Bland-Hawthorn, J., Cortese, Luca, Goodwin, Michael, Medling, Anne M., López-Sánchez, Ángel R., Goldstein, Gregory, Davies, Roger, Allen, James T., Owers, Matt S., Richards, Samuel N., Bryant, Julia J., Taranu, Dan, Yi, Sukyoung K., McDermid, Richard M., Couch, Warrick J., Cecil, Gerald, Colless, Matthew, Sharp, Rob, Jeong, Hyunjin, d'Eugenio, Francesco, Brough, Sarah, Scott, Nicholas, Walcher, C. Jakob, Elahi, Pascal J., Croom, Scott M., Schaefer, Adam L., Lawrence, Jon S., Foster, Caroline, Jones, D. Heath   +38 more
core   +1 more source

Merger-driven Growth of Intermediate-mass Black Holes: Constraints from Hubble Space Telescope Imaging of Hyper-luminous X-Ray Sources

The Astrophysical Journal
Hyper-luminous X-ray sources (HLXs) are extragalactic off-nuclear X-ray sources with luminosities exceeding the theoretical limit for accretion onto stellar-mass compact objects.
R. Scott Barrows, Mar Mezcua, Julia M. Comerford, Daniel Stern   +3 more
doaj   +1 more source

Genotyping Contemporary Captive and Historical Wild Western Lowland Gorillas Indicates Captive Breeding Is Maintaining Genetic Diversity in a Critically Endangered Primate

Animal Conservation, EarlyView.
Captive populations of threatened species risk losing genetic diversity over time. We evaluated the genetic status of contemporary captive western lowland gorillas (Gorilla gorilla gorilla) at Howletts and Port Lympne and compared this with specimens from a historical wild population.
Jaimie Morris, Tony King, John Hills, Simon C. Harvey, Jane Hopper, Rodrigo Vega   +5 more
wiley   +1 more source