Results 121 to 130 of about 4,067 (216)

Modelling and observations of molecules in discs around young stars [PDF]

, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core  

Morphological Evolution of Disk Galaxies and Their Concentration, Asymmetry, and Clumpiness (CAS) Properties in Simulations across Toomre’s Q Parameter

The Astrophysical Journal
We investigate the morphological and structural evolution of disk galaxies in simulations for a wide range of Toomre’s Q parameters. In addition to the inspection of conventional bar modes, we compute the concentration, asymmetry, and clumpiness (CAS ...
T. Chantavat, S. Yuma, P. Malelohit, T. Worrakitpoonpon   +3 more
doaj   +1 more source

Small and Large Dust Cavities in Disks around Mid-M Stars in Taurus

The Astrophysical Journal
High angular resolution imaging by Atacama Large Millimeter/submillimeter Array (ALMA) has revealed the near universality and diversity of substructures in protoplanetary disks.
Yangfan Shi, Feng Long, Gregory J. Herczeg, Daniel Harsono, Yao Liu, Paola Pinilla, Enrico Ragusa, Doug Johnstone, Xue-Ning Bai, Ilaria Pascucci, Carlo F. Manara, Gijs D. Mulders, Lucas A. Cieza   +12 more
doaj   +1 more source

Extended UV (XUV) Emission in Nearby Galaxy Disks

, 2008
Artículo firmado por 21 autores. International Conference on Formation and Evolution of Galaxy Disks (2007. Rome, Italy). We thank the Calar Alto Time Allocation Committee for the generous allocation of time to the CAHA-XUV project.We summarize the main
Muñoz Mateos, Juan Carlos, Gil De Paz, Armando, Díaz Lopez, Cristina, Zamorano Calvo, Jaime, Gallego Maestro, Jesús, Pérez González, Pablo Guillermo   +5 more
core  

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

Nature, 2023
Costantin L, Pérez-González PG, Guo Y, Buttitta C, Jogee S, Bagley MB, Barro G, Kartaltepe JS, Koekemoer AM, Cabello C, Corsini EM, Méndez-Abreu J, de la Vega A, Iyer KG, Bisigello L, Cheng Y, Morelli L, Arrabal Haro P, Buitrago F, Cooper MC, Dekel A, Dickinson M, Finkelstein SL, Giavalisco M, Holwerda BW, Huertas-Company M, Lucas RA, Papovich C, Pirzkal N, Seillé LM, Vega-Ferrero J, Wuyts S, Yung LYA.   +32 more
europepmc   +1 more source

Galaxy Zoo: CANDELS Barred Disks and Bar Fractions

, 2014
The formation of bars in disk galaxies is a tracer of the dynamical maturity of the population. Previous studies have found that the incidence of bars in disks decreases from the local Universe to z ~ 1, and by z > 1 simulations predict that bar features
Keel, WC, Bell, EF, Koekemoer, AM, Fortson, L, Smethurst, RJ, Almaini, O, Casteels, KRV, Ownsworth, J, Hartley, W, McIntosh, DH, Willett, KW, Kartaltepe, JS, Lintott, Chris, Masters, KL, Mortlock, A, Schawinski, K, Rutkowski, M, Ferguson, HC, Simmons, Brooke, Kocevski, D, Newman, JA, Melvin, T, Conselice, CJ, Nichol, RC, Cheung, E   +24 more
core   +1 more source

Galaxy evolution as a function of mass and environment: giant and dwarf galaxies in superclusters and in the field

, 2008
It has been known for decades that local galaxies can be broadly divided into two distinct populations (e.g. Hubble 1926, 1936; Morgan 1958; de Vaucouleurs 1961).
Gargiulo, Adriana
core  

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core  

The Nearly Universal Disk Galaxy Rotation Curve

The Astrophysical Journal
The universal rotation curve (URC) of disk galaxies was originally proposed to predict the shape and amplitude of any rotation curve (RC) based solely on photometric data.
Raj Patel, Nikhil Arora, Stéphane Courteau, Connor Stone, Matthew Frosst, Lawrence Widrow   +5 more
doaj   +1 more source

Untangling galaxy components: the kinematics and stellar populations of bulges and disks [PDF]

Photometric bulge-disk decompositions have long been used as a way of separating out the central and extended components in a galaxy. However, whether these photometric components are made up of different stellar populations with distinct kinematics, or ...
Tabor, Martha
core