Browsing by Title
Now showing items 15713-15732 of 24089
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On the evolution of the molecular gas fraction of star-forming galaxies
(2011-04)We present IRAM Plateau de Bure interferometric detections of CO (J = 1 -> 0) emission from a 24 mu m-selected sample of star-forming galaxies at z = 0.4. The galaxies have polycyclic aromatic hydrocarbon 7.7 mu m-derived ... -
On the evolutionary history of a simulated disc galaxy as seen by phylogenetic trees
(2023-10-12)Phylogenetic methods have long been used in biology, and more recently have been extended to other fields - for example, linguistics and technology - to study evolutionary histories. Galaxies also have an evolutionary ... -
On the Evolutionary History of a Simulated Disk Galaxy as Seen by Phylogenetic Trees
(2024-02-15)Phylogenetic methods have long been used in biology and more recently have been extended to other fields—for example, linguistics and technology—to study evolutionary histories. Galaxies also have an evolutionary history ... -
On the Evolved Nature of CK Vul
(Astronomical Society of the Pacific, 2008)CK Vul was classified as the oldest observed nova. Recent studies have proven however, that CK Vul cannot be unambiguously classified as any known kind of eruptive variable. We present the optical and radio observations ... -
On the Formation of Lines in Quantum Phase Space
(2023-01-24)We theoretically study the formation of lines in phase space using Wigner’s distribution W. In trapped quantum systems such lines form generically, crisscrossing phase space and they can have astonishing extent, reaching ... -
On the formation of massive galaxies : A simultaneous study of number density, size and intrinsic colour evolution in GOODS
(2009-07-01)The evolution of number density, size and intrinsic colour is determined for a volume-limited sample of visually classified early-type galaxies selected from the Hubble Space Telescope/Advanced Camera for Surveys images ... -
On the fragility of nuclear stellar discs against galaxy mergers: surviving photometric and kinematic signatures of nuclear discs
(2015-10-11)Nuclear stellar discs (NSDs) can help to constrain the assembly history of their host galaxies, as long as we can assume them to be fragile structures that are disrupted during merger events. In this work we investigate ... -
On the frequency of Jupiter analogs
(2011)The Anglo-Australian Planet Search has now accumulated 12 years of radial-velocity data with long-term instrumental precision better than 3 m s-1. In this paper, we expand on earlier simulation work, to probe the frequency ... -
On the geometry of the orthogonal momentum amplituhedron
(2022-12-01)In this paper we focus on the orthogonal momentum amplituhedron Ok, a recently introduced positive geometry that encodes the tree-level scattering amplitudes in ABJM theory. We generate the full boundary stratification of ... -
On the globular cluster formation history of NGC 5128
(2005-09-01)We deduce the globular cluster formation history of the nearby elliptical galaxy, NGC 5128, by using a chemical enrichment model to accurately reproduce its observed metallicity distribution function (MDF). We derive the ... -
On the Hamiltonian integrability of the bi-Yang-Baxter sigma-model
(2016-03-15)The bi-Yang-Baxter σ-model is a certain two-parameter deformation of the principal chiral model on a real Lie group G for which the left and right G-symmetries of the latter are both replaced by Poisson-Lie symmetries. It ... -
On the heat waves over India and their future projections under different SSP scenarios from CMIP6 models : Climate Change, Heat Wave, Health
(2024-01-30)Thirteen Coupled Model Intercomparison Project phase 6 (CMIP6) models were employed to simulate mean, maximum, and minimum temperature across 7 homogenous temperature regions of India for both annual and summer season ... -
On the incidence of episodic accretion in Class I YSOs from VVV
(2024-02-01)Episodic accretion is one of the competing models to explain the observed luminosity spread in young stellar clusters. These short-lived high accretion events could also have a strong impact on planet formation. Observations ... -
On the institutional foundations of law : The insufficiency of custom and private ordering
(2009-01-01)Some theorists propose that systems of law largely arise spontaneously, as an extension of customary rules. At most, the role of the state is to endorse customary laws and add some minimal general rules. Some see no essential ... -
On the Integration of Adaptive and Interactive Robotic Smart Spaces
(2015-08-11)Enabling robots to seamlessly operate as part of smart spaces is an important and extended challenge for robotics R&D and a key enabler for a range of advanced robotic applications, such as AmbientAssisted Living (AAL) and ... -
On the Key Processes that Drive Galaxy Evolution: the Role of Galaxy Mergers, Accretion, Local Environment and Feedback in Shaping the Present-Day Universe
(2019-07-17)The study of galaxy evolution is a fundamental discipline in modern astrophysics, dealing with how and why galaxies of all types evolve over time. The diversity of present-day galaxies is a reflection of the processes ... -
On the lateral expansion of gamma-ray burst jets
(2012-03)The dynamics of gamma-ray burst jets during the afterglow phase have an important effect on the interpretation of their observations and for inferring key physical parameters such as their true energy and event rate. ... -
On the Limits of Rational Choice Theory
(University of Hertfordshire, 2003)The value of rational choice theory for the social sciences has been long debated. Such rational choice theory involves a theory of behaviour based on the assumption that individuals are acting, or acting as if, to maximise ...