Matthew T. Penny
A5075229887- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- Adaptive optics and wavefront sensing
- Astronomical Observations and Instrumentation
- Innovative Microfluidic and Catalytic Techniques Innovation
- Calibration and Measurement Techniques
- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- History and Developments in Astronomy
- Technology Assessment and Management
- Spacecraft Design and Technology
- Microfluidic and Capillary Electrophoresis Applications
- Endodontics and Root Canal Treatments
- Geophysics and Gravity Measurements
- Dental materials and restorations
- Additive Manufacturing and 3D Printing Technologies
- Space Exploration and Technology
- Photocathodes and Microchannel Plates
- Solar and Space Plasma Dynamics
- Chemical Synthesis and Analysis
- Historical Astronomy and Related Studies
- Scientific Computing and Data Management
Louisiana State University
2020-2024
University College London
2014-2023
University College Lahore
2021-2023
The Ohio State University
2013-2022
State Library of Ohio
2019
Faculty (United Kingdom)
2016-2017
University of Manchester
2010-2016
The London College
2016
European Southern Observatory
2015
Saga University
2015
This report describes the 2014 study by Science Definition Team (SDT) of Wide-Field Infrared Survey Telescope (WFIRST) mission. It is a space observatory that will address most compelling scientific problems in dark energy, exoplanets and general astrophysics using 2.4-m telescope with wide-field infrared instrument an optical coronagraph. The Astro2010 Decadal recommended Wide Field as its top priority for new large As conceived decadal survey, WFIRST would carry out energy science program,...
Euclid is a space-based survey mission from the European Space Agency designed to understand origin of Universe's accelerating expansion. It will use cosmological probes investigate nature dark energy, matter and gravity by tracking their observational signatures on geometry universe cosmic history structure formation. The optimised for two independent primary probes: Weak gravitational Lensing (WL) Baryonic Acoustic Oscillations (BAO). payload consists 1.2 m Korsch telescope provide large...
The Wide Field InfraRed Survey Telescope (WFIRST) is the next NASA astrophysics flagship mission, to follow James Webb Space (JWST). WFIRST mission was chosen as top-priority large space of 2010 astronomy and decadal survey in order achieve three primary goals: study dark energy via a wide-field imaging survey, exoplanets microlensing enable guest observer program. Here we assess ability several designs goal discover sample cold, low-mass with semimajor axes beyond roughly one AU, which are...
The Wide Field Infrared Survey Telescope (WFIRST) is a 2.4m space telescope with 0.281 deg^2 field of view for near-IR imaging and slitless spectroscopy coronagraph designed > 10^8 starlight suppresion. As background information Astro2020 white papers, this article summarizes the current design anticipated performance WFIRST. While WFIRST does not have UV imaging/spectroscopic capabilities Hubble Space Telescope, wide surveys hundreds times more efficient. Some most ambitious multi-cycle...
Abstract We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). used Hubble Space Telescope (HST) to carry out precise astrometry source star long-duration ( t E ≃ 270 days), high-magnification microlensing event MOA-2011-BLG-191/OGLE-2011-BLG-0462 (hereafter designated as MOA-11-191/OGLE-11-462), in direction Galactic bulge. HST imaging, conducted at eight epochs over interval 6 yr, reveals a clear relativistic astrometric deflection...
Euclid is the second M-class mission of ESA Cosmic Vision programme, with principal science goal studying dark energy. also expected to undertake additional Legacy Science programmes. One proposal Exoplanet Survey (ExELS) which will be first survey able measure abundance exoplanets down Earth mass for host separations from ~1AU out free-floating (unbound) regime. The cold and exoplanet regimes represent a crucial discovery space testing planet formation theories. ExELS use gravitational...
The Large Synoptic Survey Telescope is designed to provide an unprecedented optical imaging dataset that will support investigations of our Solar System, Galaxy and Universe, across half the sky over ten years repeated observation. However, exactly how LSST observations be taken (the observing strategy or "cadence") not yet finalized. In this dynamically-evolving community white paper, we explore detailed performance anticipated science expected depend on small changes strategy. Using...
We present the analysis of first circumbinary planet microlensing event, OGLE-2007-BLG-349. This event has a strong planetary signal that is best fit with mass ratio $q \approx 3.4\times10^{-4}$, but there an additional due to lens mass, either another or star. find acceptable light curve fits two classes models: 2-planet models (with single host star) and models. The also reveals significant parallax effect, which constrains system be $M_L 0.7 M_\odot$. Hubble Space Telescope images resolve...
We present new ground-based, multi-colour, broad-band photometric measurements of the physical parameters, transmission and emission spectra transiting extrasolar planet WASP-19b. The are based on observations eight transits four occultations through a Gunn i filter using 1.54-m Danish Telescope, 14 an Rc at Perth Exoplanet Survey Telescope (PEST) observatory one transit observed simultaneously optical (Sloan g′, r′, i′, z′) three near-infrared (J, H, K) filters, Gamma Ray Burst Optical...
Space-based microlens parallax measurements are a powerful tool for understanding planet populations, especially their distribution throughout the Galaxy. However, if space-based observations of microlensing events must be specifically targeted, it is crucial that enter sample without reference to known presence or absence planets. Hence, vital define objective criteria selecting where possible and carefully consider minimize selection biases not so final represents controlled experiment. We...
The Nancy Grace Roman Space Telescope (Roman) will perform a Galactic Exoplanet Survey (RGES) to discover bound exoplanets with semi-major axes greater than 1 au using gravitational microlensing. even be sensitive planetary mass objects that are not gravitationally any host star. Such free-floating (FFPs) detected as isolated microlensing events timescales shorter few days. A measurement of the abundance and function FFPs is powerful diagnostic formation evolution systems, well physics via...
We present the first results from an optical reverberation mapping campaign executed in 2014, targeting active galactic nuclei (AGN) MCG+08-11-011, NGC 2617, 4051, 3C 382, and Mrk 374. Our targets have diverse interesting observational properties, including a "changing look" AGN broad-line radio galaxy. Based on continuum-H$\beta$ lags, we measure black hole masses for all five targets. also obtain H$\gamma$ He{\sc ii}\,$\lambda 4686$ lags objects except 382. The indicate radial...
The Astro2010 Decadal Survey recommended a Wide Field Infrared Telescope (WFIRST) as its top priority for new large space mission. As conceived by the decadal survey, WFIRST would carry out dark energy science program, microlensing program to determine demographics of exoplanets, and general observing utilizing ultra wide field. In October 2012, NASA chartered Science Definition Team (SDT) produce, in collaboration with Project Office at GSFC Program JPL, Design Reference Mission (DRM) an...
We present updates to \textsc{prism}, a photometric transit-starspot model, and \textsc{gemc}, hybrid optimisation code combining MCMC genetic algorithm. then high-precision photometry of four transits in the WASP-6 planetary system, two which contain starspot anomaly. All were modelled using \textsc{prism} physical properties system calculated. find mass radius host star be $0.836\pm 0.063\,{\rm M}_\odot$ $0.864\pm0.024\,{\rm R}_\odot$, respectively. For planet we $0.485\pm 0.027\,{\rm...
We present time-series photometric observations of thirteen transits in the planetary systems WASP-24, WASP-25 and WASP-26. All three have orbital obliquity measurements, WASP-24 WASP-26 been observed with Spitzer, was previously comparatively neglected. Our light curves were obtained using telescope-defocussing method scatters 0.5 to 1.2 mmag relative their best-fitting geometric models. used these data measure physical properties ephemerides high precision, finding that our improved...
We report the discovery of KELT-7b, a transiting hot Jupiter with mass MJ, radius RJ, and an orbital period days. The bright host star (HD 33643; KELT-7) is F-star V = 8.54, Teff 6789 K, [Fe/H] , . It has M⊙, R⊙, fifth most massive, hottest, ninth brightest known to planet. also around which Kilodegree Extremely Little Telescope (KELT) discovered Thus, KELT-7b ideal target for detailed characterization given its relatively low surface gravity, high equilibrium temperature, star. rapid...
Aims: We present 11 high-precision photometric transit observations of the transiting super-Earth planet GJ1214b. Combining these data with from other authors, we investigate ephemeris for possible signs timing variations (TTVs) using a Bayesian approach. Methods: The were obtained telescope-defocusing techniques, and achieve high precision random errors in photometry as low 1mmag per point. To possibility TTVs light curve, calculate overall probability TTV signal methods. Results: are used...
We present photometric observations of four transits in the WASP-17 planetary system, obtained using telescope defocusing techniques and with scatters reaching 0.5 mmag per point. Our revised orbital period is 4.0 ± 0.6 s longer than previous measurements, a difference 6.6σ, does not support published detections eccentricity this system. model light curves jktebop code calculate physical properties system by recourse to five sets theoretical stellar predictions. The resulting radius, Rb =...
Planets are thought to form via accretion from a remnant disk of gas and solids around newly formed star. During this process material in the either remains bound star as part planet, smaller celestial body, or makes up interplanetary medium; falls into star; is ejected system. Herein we use dynamical models probe abundance properties during late-stage planet formation estimate their contribution free-floating population. We present 300 N-body simulations terrestrial solar-type star, with...
We present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part a larger multi-wavelength reverberation mapping campaign. The campaign spanned six months and achieved almost daily cadence with observations from five ground-based telescopes. H$\beta$ He II $\lambda$4686 broad emission-line light curves lag that 5100 $\AA$ continuum by $4.17^{+0.36}_{-0.36}$ days $0.79^{+0.35}_{-0.34}$ days, respectively. relative to 1158 ultraviolet curve measured Hubble Space...
Abstract We announce the discovery of KELT-16b, a highly irradiated, ultra-short period hot Jupiter transiting relatively bright ( V = 11.7) star TYC 2688-1839-1/KELT-16. A global analysis system shows KELT-16 to be an F7V with <?CDATA ${T}_{\mathrm{eff}}=6236\pm 54$?> K, $\mathrm{log}{g}_{\star }={4.253}_{-0.036}^{+0.031}$?> , $[\mathrm{Fe}/{\rm{H}}]=-{0.002}_{-0.085}^{+0.086}$?> ${M}_{\star }={1.211}_{-0.046}^{+0.043}\,{M}_{\odot }$?> and ${R}_{\star }\,={1.360}_{-0.053}^{+0.064}{R}_{\odot...
We present the discovery of KELT-21b, a hot Jupiter transiting $V=10.5$ A8V star HD 332124. The planet has an orbital period $P=3.6127647\pm0.0000033$ days and radius $1.586_{-0.040}^{+0.039}$ $R_J$. set upper limit on planetary mass $M_P<3.91$ $M_J$ at $3\sigma$ confidence. confirmed nature companion using this Doppler tomographic observations to verify that transits These data also demonstrate orbit is well-aligned with stellar spin, sky-projected spin-orbit misalignment...
Abstract We present optical continuum lags for two Seyfert 1 galaxies, MCG+08-11-011 and NGC 2617, using monitoring data from a reverberation mapping campaign carried out in 2014. Our light curves span the ugriz filters over four months, with median cadences of 1.0 0.6 days respectively, combined roughly daily X-ray near-UV Swift 2617. find consistent geometrically thin accretion-disk models that predict lag-wavelength relation τ ∝ λ 4/3 . However, observed are larger than predictions based...