S. Phillipps
A5049206842- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- History and Developments in Astronomy
- Scientific Research and Discoveries
- Adaptive optics and wavefront sensing
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Remote Sensing in Agriculture
- Impact of Light on Environment and Health
- Geophysics and Gravity Measurements
- Radio Astronomy Observations and Technology
- Advanced Statistical Methods and Models
- Space Science and Extraterrestrial Life
- Calibration and Measurement Techniques
- Relativity and Gravitational Theory
- Advanced Vision and Imaging
- Medical Imaging Techniques and Applications
- Advanced Measurement and Metrology Techniques
- Spatial and Panel Data Analysis
University of Bristol
2016-2025
Bristol Robotics Laboratory
2016-2022
The University of Western Australia
2016
International Centre for Radio Astronomy Research
2016
Texas Tech University
2015
European Space Astronomy Centre
2014
University of Southampton
2014
University of Waterloo
2010
At Bristol
2010
The University of Queensland
2003
The Galaxy And Mass Assembly (GAMA) survey has been operating since February 2008 on the 3.9-m Anglo-Australian Telescope using AAOmega fibre-fed spectrograph facility to acquire spectra with a resolution of R~1300 for 120,862 SDSS selected galaxies. target catalogue constitutes three contiguous equatorial regions centred at 9h (G09), 12h (G12) and 14.5h (G15) each 12 x 4 sq.deg limiting fluxes r < 19.4, 19.8, 19.4 mag respectively (and additional limits other wavelengths). Spectra reliable...
This paper describes the first catalogue of photometrically-derived stellar mass estimates for intermediate-redshift (z < 0.65) galaxies in Galaxy And Mass Assembly (GAMA) spectroscopic redshift survey. These masses, as well full set ancillary population parameters, will be made public part GAMA data release 2. Although database does include NIR photometry, we show that quality our synthesis fits is significantly poorer when these are included. Further, a large fraction galaxies, parameters...
The Galaxy And Mass Assembly (GAMA) survey is one of the largest contemporary spectroscopic surveys low redshift galaxies. Covering an area ∼286 deg2 (split among five regions) down to a limiting magnitude r < 19.8 mag, we have collected spectra and reliable redshifts for 238 000 objects using AAOmega spectrograph on Anglo-Australian Telescope. In addition, assembled imaging data from number independent in order generate photometry spanning wavelength range 1 nm–1 m. Here, report recently...
The Herschel ATLAS is the largest open-time key project that will be carried out on Space Observatory. It survey 510 square degrees of extragalactic sky, four times larger than all other surveys combined, in five far-infrared and submillimetre bands. We describe survey, complementary multi-wavelength datasets combined with data, six major science programmes we are undertaking. Using new models based a previous galaxies, present predictions properties sources wavebands.
The INT Photometric Halpha Survey of the Northern Galactic Plane (IPHAS) is a 1800 square degrees CCD survey northern Milky Way spanning latitude range -5 < b +5 (degrees) and reaching down to r' ~ 20 (10-sigma). It may increase number known emission line sources by an order magnitude. Representative observations assessment point-source data from IPHAS, now underway, are presented. obtained Wide Field Camera images in narrow-band, Sloan i' broad-band, filters. We simulate IPHAS (r' -...
Using the complete Galaxy and Mass Assembly I (GAMA-I) survey covering ∼142 deg2 to rAB= 19.4, of which ∼47 is 19.8, we create GAMA-I galaxy group catalogue (G3Cv1), generated using a friends-of-friends (FoF) based grouping algorithm. Our algorithm has been tested extensively on one family mock GAMA lightcones, constructed from Λ cold dark matter N-body simulations populated with semi-analytic galaxies. Recovered properties are robust effects interlopers median unbiased in most important...
We present single-S\'ersic two-dimensional model fits to 167,600 galaxies modelled independently in the ugrizYJHK bandpasses using reprocessed Sloan Digital Sky Survey Data Release Seven (SDSS DR7) and UKIRT Infrared Deep Large Area (UKIDSS-LAS) imaging data available from GAMA database. In order facilitate this study we developed SIGMA, an R wrapper around several contemporary astronomy software packages including Source Extractor, PSF Extractor GALFIT 3. SIGMA produces realistic 2D...
We use data from the Galaxy And Mass Assembly (GAMA) survey in redshift range 0.01$<$z$<$0.1 (8399 galaxies $g$ to $K_s$ bands) derive stellar mass $-$ half-light radius relations for various divisions of 'early' and 'late'-type samples. find choice division between early late (i.e., colour, shape, morphology) is not particularly critical, however, adopted limits sample selections careful rejection outliers robust fitting methods) are important. In particular we note that samples extending...
The VST Photometric Halpha Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying southern Milky Way in u, g, r, i at 1 arcsec angular resolution. Its footprint spans latitude range -5 < b +5 all longitudes south celestial equator. Extensions around Centre to latitudes +/-10 bring much Bulge. This ESO public survey, begun on 28th December 2011, reaches down 20th magnitude (10-sigma) will provide single-epoch digital optical photometry for 300 million stars. observing strategy...
We describe data release 3 (DR3) of the Galaxy And Mass Assembly (GAMA) survey. The GAMA survey is a spectroscopic redshift and multi-wavelength photometric in three equatorial regions each 60.0 deg^2 (G09, G12, G15), two southern 55.7 (G02) 50.6 (G23). DR3 consists of: first covering G02 region on H-ATLAS sources regions; updates to released DR2. includes 154809 with secure redshifts across four regions. A subset 95.5% complete r<19.8 over an area 19.5 deg^2, 20086 galaxy redshifts, that...
We use the energy-balance code magphys to determine stellar and dust masses, corrected star formation rates for over 200 000 GAMA galaxies, 170 G10-COSMOS 3D-HST galaxies. Our values agree well with previously reported measurements constitute a representative homogeneous data set spanning broad range in stellar-mass (108–1012 M⊙), dust-mass (106–109 (0.01–100 M⊙yr−1), redshift (0.0 < z 5.0). combine these measure cosmic history (CSFH), density (SMD), (DMD) 12 Gyr timeline. The mostly...
In Galaxy And Mass Assembly Data Release 4 (GAMA DR4), we make available our full spectroscopic redshift sample. This includes 248682 galaxy spectra, and, in combination with earlier surveys, results 330542 redshifts across five sky regions covering ~250deg^2. The density, is the highest over such a sustained area, has exceptionally high completeness (95 per cent to r_KIDS=19.65mag), and well suited for study of mergers, groups, low (z<0.25) population. DR4 32 value-added tables or...
The UK Schmidt Telescope (UKST) of the Anglo-Australian Observatory completed a narrow-band Hα plus [N ii] 6548, 6584-Å survey Southern Galactic Plane and Magellanic Clouds in late 2003. survey, which was last UKST wide-field photographic only one undertaken narrow-band, is now an online digital data product Wide-Field Astronomy Unit Royal Edinburgh (ROE). utilized high specification, monolithic interference bandpass filter exceptional quality. In conjunction with fine-grained Tech-Pan film...
Using 10 095 galaxies (B < 20 mag) from the Millennium Galaxy Catalogue, we derive B-band luminosity distributions and selected bivariate brightness for galaxy population subdivided by eyeball morphology; Sérsic index (n); two-degree Field Redshift Survey (2dFGRS) η parameter; rest-(u−r) colour (global core); MGC continuum shape; half-light radius; (extrapolated) central surface brightness; inferred stellar mass-to-light ratio. All subdivisions extract highly correlated subsets of which...
We present the Macquarie/AAO/Strasbourg Hα Planetary Nebula Catalogue (MASH) of over 900 true, likely and possible new Galactic planetary nebulae (PNe) discovered from AAO/UKST survey southern plane. The combination depth, resolution, uniformity areal coverage has opened up a hitherto unexplored region parameter space permitting detection this significant PN sample. Away bulge PNe are typically more evolved, larger angular extent, lower surface brightness obscured (i.e. extinguished) than...
We describe a population of compact objects in the centre Fornax Cluster which were discovered as part our 2dF Spectroscopic Survey. These have spectra typical old stellar systems, but are unresolved on photographic sky survey plates. They absolute magnitudes -13<Mb<-11, so they 10 times more luminous than any Galactic globular clusters, fainter known dwarf galaxies. all within 30 arcminutes central galaxy cluster, NGC 1399, distributed over larger radii cluster system that galaxy. suggest...
We re-examine the classical optical evidence for low depths traditionally assigned to spiral discs and argue that it is highly model-dependent unconvincing. In particular, layered models with a physically thin but optically thick dust layer behave like discs. The opposite hypothesis, such are then examined in light of modern evidence. find be consistent near-infrared IRAS observations, surface brightnesses, H I CO column densities Hα measurements. Ordinary disc galaxies may shielded by up...
The Galaxy And Mass Assembly (GAMA) survey is a multiwavelength photometric and spectroscopic survey, using the AAOmega spectrograph on Anglo-Australian Telescope to obtain spectra for up ∼300 000 galaxies over 280 deg2, limiting magnitude of rpet < 19.8 mag. target are distributed 0 z ≲ 0.5 with median redshift ≈ 0.2, although distribution includes small number systems, primarily quasars, at higher redshifts, beyond = 1. accuracy ranges from σv 50 km s−1 100 depending signal-to-noise ratio...
Galaxy and Mass Assembly (GAMA) is a project to study galaxy formation evolution, combining imaging data from ultraviolet radio with spectroscopic the AAOmega spectrograph on Anglo-Australian Telescope. Using Phase 1 of GAMA, taken over three observing seasons, correcting for various minor sources incompleteness, we calculate luminosity functions (LFs) their evolution in ugriz passbands.
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...
We present the Galaxy And Mass Assembly (GAMA) Panchromatic Data Release (PDR) constituting over 230 deg2 of imaging with photometry in 21 bands extending from far-UV to far-IR. These data complement our spectroscopic campaign 300k galaxies, and are compiled observations a variety facilities including: GALaxy Evolution eXplorer, Sloan Digital Sky Survey, Visible Infrared Telescope for Astronomy (VISTA), Wide-field Survey Explorer, Herschel, GAMA regions currently being surveyed by VLT (VST)...
We present a meta-analysis of star-formation rate (SFR) indicators in the GAMA survey, producing 12 different SFR metrics and determining SFR-M* relation for each. compare contrast published methods to extract from each indicator, using well-defined local sample morphologically-selected spiral galaxies, which excludes sources potentially have large recent changes their SFR. The are found yield relations with inconsistent slopes normalisations, suggesting differences between calibration...
In order to generate credible 0.1–2 μm spectral energy distributions, the Galaxy and Mass Assembly (GAMA) project requires many gigabytes of imaging data from a number instruments be reprocessed into standard format. this paper, we discuss software infrastructure use, create self-consistent ugrizYJHK photometry for all sources within GAMA sample. Using UKIDSS SDSS archive data, outline pre-processing necessary standardize images common zero-point, steps taken correct seeing bias across set...
We present an estimate of the galaxy stellar mass function and its division by morphological type in local (0.025 < z 0.06) Universe. Adopting robust classifications as previously presented (Kelvin et al.) for a sample 3,727 galaxies taken from Galaxy And Mass Assembly survey, we define volume limited sub-sample 2,711 to lower limit M = 10^9.0 M_sun. confirm that is well described double Schechter given M* 10^10.64 M_sun, {\alpha}1 -0.43, {\phi}*1 4.18 dex^-1 Mpc^-3, {\alpha}2 -1.50 {\phi}*2...