A5050776050- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Oceanographic and Atmospheric Processes
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Climate variability and models
- Astro and Planetary Science
- Meteorological Phenomena and Simulations
- Ocean Waves and Remote Sensing
- Marine and coastal ecosystems
- Astrophysical Phenomena and Observations
- Calibration and Measurement Techniques
- Global Energy and Sustainability Research
- Atmospheric and Environmental Gas Dynamics
- Petroleum Processing and Analysis
- Arctic and Antarctic ice dynamics
- History and advancements in chemistry
- Chemistry and Stereochemistry Studies
- Atmospheric aerosols and clouds
- Adaptive optics and wavefront sensing
- Atmospheric Ozone and Climate
- Gamma-ray bursts and supernovae
- Spectroscopy and Laser Applications
- Spatial and Panel Data Analysis
- Historical Geopolitical and Social Dynamics
University of Exeter
2009-2024
Met Office
2014-2024
Leibniz Institute for Astrophysics Potsdam
2009
University of Göttingen
2009
École Normale Supérieure de Lyon
2009
Centre de Recherche Astrophysique de Lyon
2009
Université Claude Bernard Lyon 1
2009
Centre National de la Recherche Scientifique
2009
Instituto de Astrofísica de Canarias
2009
Max Planck Institute for Astronomy
2009
The Copernicus Marine Environment Monitoring Service (CMEMS) provides regular and systematic reference information on the physical biogeochemical ocean sea-ice state for global European regional seas. CMEMS serves a wide range of users (more than 15,000 are now registered to service) applications. Observations fundamental pillar value-added chain that goes from observation users. used by Thematic Assembly Centres (TACs) derive high-level data products Forecasting (MFCs) validate constrain...
The INT/WFC Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS) is a 1800 square degrees imaging survey covering latitudes |b| < 5 deg and longitudes l = 30 to 215 in r, i H-alpha filters using Wide Field Camera (WFC) on 2.5-metre Isaac Newton Telescope (INT) La Palma. We present first quality-controlled globally-calibrated source catalogue derived from survey, providing single-epoch photometry for 219 million unique sources across 92% footprint. observations were carried out...
The clusters of young stars in massive star-forming regions show a wide range sizes, morphologies, and numbers stars. Their highly subclustered structures are revealed by the MYStIX project's sample 31,754 nearby sites star formation (regions at distances <3.6 kpc that contain least one O-type star.) In 17 surveyed MYStIX, we identify subclusters using finite mixture models—collections isothermal ellipsoids model individual subclusters. Maximum likelihood estimation is used to estimate...
Abstract A new coupled data assimilation (DA) system developed with the aim of improving initialization forecasts for various time ranges from short range out to seasonal is introduced. The implementation here based on a “weakly” approach whereby model used provide background information separate ocean–sea ice and atmosphere–land analyses. increments generated these analyses are then added back into model. This different existing Met Office initializing forecasts, which uses ocean atmosphere...
The Great Nebula in Carina provides an exceptional view into the violent massive star formation and feedback that typifies giant HII regions starburst galaxies. We have mapped star-forming complex X-rays, using archival Chandra data a mosaic of 20 new 60ks pointings X-ray Observatory's Advanced CCD Imaging Spectrometer, as testbed for understanding recent ongoing to probe Carina's bright diffuse emission. This study has yielded catalog properties >14,000 point sources; >9800 them...
Abstract. The North-West European Shelf ocean forecasting system has been providing oceanographic products for the continental shelf seas more than 15 years. In that time, several different configurations have implemented, updating model and data assimilation components. latest configuration to be put in operation, an eddy-resolving at 1.5 km (AMM15), replaces 7 (AMM7) used 8 years deliver forecast Copernicus Marine Environment Monitoring Service its precursor projects. This improved ability...
Abstract The Met Office Forecast Ocean Assimilation Model (FOAM) ocean–sea‐ice analysis and forecasting operational system has been using an ORCA tripolar grid with 1/4° horizontal spacing since December 2008. Surface boundary forcing is provided by numerical weather prediction fields from the global atmosphere Unified Model. We present results a 2‐year simulation 1/12° model configuration while keeping data assimilation (DA) set‐up. also describe recent enhancements that are included in our...
Direct-imaging searches for planets reveal wide orbit amenable to spectroscopy, and their atmospheres represent an important comparison the irradiated of Hot Jupiters. Using AO integral field spectroscopy 2M1207 b, shape continuum emission over <i>J<i/>, <i>H<i/>, <i>K<i/> bands from atmosphere this young, planetary mass companion is measured in order compare with atmospheric evolutionary models, objects similar temperature young clusters field. The b spectrum has highest spectral resolution...
MYStIX (Massive Young Star-Forming Complex Study in Infrared and Xray) seeks to characterize 20 OB-dominated young clusters their environs at distances d < 4 kpc using imaging detectors on the Chandra X-ray Observatory, Spitzer Space Telescope, United Kingdom InfraRed Telescope. The observational goals are construct catalogs of star-forming complex stellar members with well-defined criteria, maps nebular gas (particularly hot emitting plasma) dust. A catalog Probable Members (MPCMs) several...
(abridged) We investigate the properties of young stars and their disks in NGC 6357 complex, concentrating on most massive star cluster within complex: Pismis 24. discover two new clusters complex. give a revised distance estimate for 24 1.7+-0.2 kpc. find that Pis 24-18 is binary system, with secondary being main X-ray source pair. derive mass function up to completeness limit at low masses it agrees well IMF Trapezium cluster. median age 1 Myr members. five proplyds HST archival imaging...
Abstract. We describe the physical model component of standard Coastal Ocean version 5 configuration (CO5) European north-west shelf (NWS). CO5 was developed jointly between Met Office and National Oceanography Centre. is designed with seamless approach in mind, which allows for modelling multiple timescales a variety applications from short-range ocean forecasting to climate projections. The constitutes basis latest update data assimilation components Office's operational Forecast...
A coordinated effort based on Observing System Simulation Experiments (OSSEs) has been carried out for the first time by four European ocean forecasting centers in order to provide insights present and future design of situ Atlantic Ocean observing system from a monitoring perspective. This multi-system approach is assimilating synthetic data sets, obtained sub-sampling space an eddy-resolving unconstrained simulation, named Nature Run. To assess ability given constrain model state, set...
Abstract. Operational ocean forecasts are typically produced by modelling systems run using a forced mode approach. The evolution of the state is not directly influenced surface waves, and dynamics driven an external source meteorological data which independent state. Model coupling provides one approach to increase extent forecast can represent interactions feedbacks between ocean, atmosphere seen in nature. This paper demonstrates impact improving how effect waves on momentum exchange...
The discovery of epsilon Indi Ba, Bb, a binary brown dwarf system very close to the Sun, makes possible concerted campaign characterise physical parameters two T dwarfs. Recent observations suggest substellar atmospheric and evolutionary models may be inconsistent with observations, but there have been few conclusive tests date. We therefore aim these benchmark dwarfs place constraints on such models. obtained high angular resolution optical, near-infrared, thermal-infrared imaging...
The distribution of young stars found in the Chandra Carina Complex Project (CCCP) is examined for clustering structure. X-ray surveys are advantageous identifying stellar populations compared to optical and infrared suffering less contamination from nebular emission Galactic field stars. analysis based on smoothed maps a spatially complete subsample about 3000 brighter sources classified as members, 10,000 full CCCP sample. principal known clusters recovered, some additional smaller groups...
We present a catalog of ∼14,000 X-ray sources observed by the ACIS instrument on Chandra Observatory within 1.42 deg2 survey Great Nebula in Carina, known as Carina Complex Project (CCCP). This study appears special issue devoted to CCCP. Here, we describe data reduction and analysis procedures performed observations, including calibration cleaning event data, point-source detection, source extraction. The be complete across most field an absorption-corrected total-band luminosity ∼1030.7...
Abstract. The International Submillimetre Airborne Radiometer (ISMAR) has been developed as an airborne demonstrator for the Ice Cloud Imager (ICI) that will be launched on board next generation of European polar-orbiting weather satellites in 2020s. It currently 15 channels at frequencies between 118 and 664 GHz which are sensitive to scattering by cloud ice, additional 874 being developed. This paper presents overview ISMAR describes algorithms used calibration. main sources bias...
The Massive Young star-forming Complex Study in Infrared and X-rays (MYStIX) project requires samples of young stars that are likely members 20 nearby Galactic massive regions. Membership is inferred from statistical classification X-ray sources, detection a robust infrared excess best explained by circumstellar dust disk or infalling envelope, published spectral types unlikely to be found among field stars. We present the MYStIX membership lists here, describe detail sources via \Naive Bayes Classi
The Massive Young Star-Forming Complex Study in Infrared and X-rays (MYStIX) project provides a comparative study of 20 Galactic massive star-forming complexes (d = 0.4–3.6 kpc). Probable stellar members each target complex are identified using X-ray and/or infrared data via two pathways: (1) detections young/massive stars with coronal activity/strong winds or (2) excess (IRE) selection young objects (YSOs) circumstellar disks protostellar envelopes. We present the methodology for second...
Integration of observations the coastal ocean continuum from regional oceans to shelf seas and estuaries/deltas with models can substantially increase value enable a wealth applications. In particular, play critical role at connecting sparse observations, synthesizing them, assisting design observational networks; in turn, whenever available, guide model development. Coastal should sample two-way interactions between nearshore, estuarine processes open processes, while accounting for...
Abstract Oceanography has entered an era of new observing platforms, such as biogeochemical‐Argo floats and gliders, some which will provide three‐dimensional maps essential ecosystem variables on the North‐West European (NWE) Shelf. In a foreseeable future operational centers use multi‐platform assimilation to integrate those valuable data into reanalysis forecast systems. Here we address important questions related glider biogeochemical (DA) introduce DA in preoperational model NWE Shelf...