E. A. Magnier
A5002637900- Gamma-ray bursts and supernovae
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Spacecraft and Cryogenic Technologies
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Astrophysics and Cosmic Phenomena
- Galaxies: Formation, Evolution, Phenomena
- Pulsars and Gravitational Waves Research
- Isotope Analysis in Ecology
- Solar and Space Plasma Dynamics
- Planetary Science and Exploration
- Adaptive optics and wavefront sensing
- Nuclear Physics and Applications
- Geophysics and Gravity Measurements
- Calibration and Measurement Techniques
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Space Exploration and Technology
- Radio Astronomy Observations and Technology
- Atmospheric Ozone and Climate
University of Hawaii System
2015-2024
University of Hawaiʻi at Mānoa
2014-2023
Institut Lavoisier de Versailles
2019-2020
McGill University
2019
Université de Versailles Saint-Quentin-en-Yvelines
2019
University of Girona
2019
Institut Català d'Investigació Química
2019
Tallinn University of Technology
2019
University of St Andrews
2019
Showa Pharmaceutical University
2019
We present optical light curves, redshifts, and classifications for 365 spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium Deep Survey. detail improvements to PS1 SN photometry, astrometry calibration that reduce systematic uncertainties in distances. combine subset of 279 ($0.03 < z 0.68$) with useful distance estimates from SDSS, SNLS, various low-z HST samples form largest combined sample consisting a total 1048 ranging $0.01 2.3$, which we...
Pan-STARRS1 has carried out a set of distinct synoptic imaging sky surveys including the $3π$ Steradian Survey and Medium Deep in 5 bands ($grizy_{P1}$). The mean 5$σ$ point source limiting sensitivities stacked 3$π$ $grizy_{P1}$ are (23.3, 23.2, 23.1, 22.3, 21.4) respectively. upper bound on systematic uncertainty photometric calibration across is 7-12 millimag depending bandpass. astrometric using Gaia frame comes from comparison results with Gaia: standard deviation median residuals ($...
The Pan-STARRS1 survey is collecting multi-epoch, multi-color observations of the sky north declination −30° to unprecedented depths. These data are being photometrically and astrometrically calibrated will serve as a reference for many other purposes. In this paper, we present our determination photometric system: gP1, rP1, iP1, zP1, yP1, wP1. system fundamentally based on Hubble Space Telescope Calspec spectrophotometric observations, which in turn models white dwarf atmospheres. We define...
The IFA and collaborators are embarking on a project to develop 4-telescope synoptic survey instrument. While somewhat smaller than the 6.5m class telescope envisaged by decadal review in their proposal for LSST, this facility will nonetheless be able accomplish many of LSST science goals. In paper we describe motivation 'distributed aperture' approach current concept Pan-STARRS -- pilot proper its performance goals reach. We also discuss how may expanded.
We present a three-dimensional map of interstellar dust reddening, covering three-quarters the sky out to distance several kiloparsecs, based on Pan-STARRS 1 (PS1) and 2MASS photometry. The reveals wealth detailed structure, from filaments large cloud complexes. has hybrid angular resolution, with most at an resolution –, maximum . distribution is determined in fully probabilistic framework, yielding uncertainty reddening along each line sight, as well stellar distances, reddenings,...
Pan-STARRS is a highly cost-effective, modular and scalable approach to wide-field optical/NIR imaging. It uses 1.8m telescopes with very large (7 square degree) field of view revolutionary1.4 billion pixel CCD cameras low noise rapid read-out provide broad-band imaging from 400-1000nm wavelength. The first single telescope system, PS1, has been deployed on Haleakala Maui, collecting science quality survey data for approximately six months. PS1 will be joined by second PS2 in 18 A four...
We present a new 3D map of interstellar dust reddening, covering three quarters the sky (declinations δ ≳ −30°) out to distance several kiloparsecs. The is based on high-quality stellar photometry 800 million stars from Pan-STARRS 1 and 2MASS. divide into sightlines containing few hundred each, then infer distances types, along with line-of-sight distribution. Our incorporates more accurate average extinction law an additional 1.5 yr data, tracing greater extinctions at higher angular...
We report extensive observational data for five of the lowest redshift Super-Luminous Type Ic Supernovae (SL-SNe Ic) discovered to date, namely PTF10hgi, SN2011ke, PTF11rks, SN2011kf and SN2012il. Photometric imaging transients at +50 +230 days after peak combined with host galaxy subtraction reveals a luminous tail phase four these SL-SNe. A high resolution, optical near infrared spectrum from xshooter provides detection broad He I $\lambda$10830 emission line in (+50d) SN2012il, revealing...
We present a precise photometric calibration of the first 1.5 years science imaging from Pan-STARRS1 survey (PS1), an ongoing optical entire sky north declination −30° in five bands. Building on techniques employed by Padmanabhan et al. Sloan Digital Sky Survey (SDSS), we use repeat PS1 observations stars to perform relative each its bands, simultaneously solving for system throughput, atmospheric transparency, and large-scale detector flat field. Both internal consistency tests comparison...
As of 2012 January 21, the Pan-STARRS 1 3π Survey has observed 3/4 sky visible from Hawaii with a minimum 2 and mean 7.6 observations in five filters, gP1, rP1, iP1, zP1, yP1. Now at end second year mission, we are position to make an initial public release portion this unprecedented data set. This article describes PS1 Photometric Ladder, Release 12.01. is first series releases be generated as survey coverage increases analysis improves. The Ladder rungs every hour right ascension four...
In the past decade, several rapidly evolving transients have been discovered whose timescales and luminosities are not easily explained by traditional supernovae (SNe) models. The sample size of these objects has remained small due, at least in part, to challenges detecting short timescale with survey cadences. Here we present results from a search within Pan-STARRS1 Medium Deep Survey (PS1-MDS) for luminous transients. We identify 10 new time above half-maximum (t1/2) less than 12 days...
This paper describes the organization of database and catalog data products from Pan-STARRS1 $3\pi$ Steradian Survey. The are available in form an SQL-based relational MAST, Mikulski Archive for Space Telescopes at STScI. is described detail, including construction database, provenance data, schema, how tables related. Examples queries a range science goals included.
Abstract Quasars are galaxies hosting accreting supermassive black holes; due to their brightness, they unique probes of the early universe. To date, only a few quasars have been reported at <?CDATA $z\gt 6.5$?> (<800 Myr after big bang). In this work, we present six additional $z\gtrsim discovered using Pan-STARRS1 survey. We use sample 15 perform homogeneous and comprehensive analysis highest-redshift quasar population. report four main results: (1) majority show large blueshifts broad...
We present the details of photometric and astrometric calibration Pan-STARRS1 $3\pi$ Survey. The goals were to reduce systematic effects introduced by camera detectors, place all observations onto a system with consistent zero points over entire area surveyed, ~30,000 square degrees north $\delta$ = -30 degrees. compensates for similar so that positions, proper motions, parallaxes are reliable as well. Pan-STARRS Data Release 2 (DR2) astrometry is tied Gaia DR1 release.
We present a systematic search for changing-look quasars based on repeat photometry from Sloan Digital Sky Survey (SDSS) and Pan-STARRS1, along with spectra SDSS SDSS-III Baryon Oscillation Spectroscopic Survey. Objects large, |Δg| > 1 mag photometric variations in their light curves are selected as candidates to look changes broad emission line (BEL) features. Out of sample 1011 objects that satisfy our selection criteria have more than one epoch spectroscopy, we find 10 examples variable...
We present optical spectroscopy and optical/near-IR photometry of 31 host galaxies hydrogen-poor superluminous supernovae (SLSNe), including 15 events from the Pan-STARRS1 Medium Deep Survey. Our sample spans redshift range 0.1 ≲ z 1.6, is first comprehensive galaxy study this specific subclass cosmic explosions. Combining multi-band emission-line measurements, we determine luminosities, stellar masses, star formation rates, metallicities. find that, as a whole, hosts SLSNe are...
We present griz light curves of 146 spectroscopically confirmed Type Ia Supernovae ($0.03 < z <0.65$) discovered during the first 1.5 years Pan-STARRS1 Medium Deep Survey. The natural photometric system is determined by a combination on-site measurements instrument response function and observations spectrophotometric standard stars. find that systematic uncertainties in are currently 1.2\% without accounting for uncertainty HST Calspec definition AB system. A Hubble diagram constructed with...
ABSTRACT The dust extinction curve is a critical component of many observational programs and an important diagnostic the physics interstellar medium. Here we present new measurements its variation toward tens thousands stars, hundred-fold larger sample than in existing detailed studies. We use data from APOGEE spectroscopic survey combination with ten-band photometry Pan-STARRS1, Two Micron All-Sky Survey, Wide-field Infrared Survey Explorer . find that optical through infrared well...
We have used Pan-STARRS1 to discover an extremely red late-L dwarf, which has (J-K)_MKO = 2.84 and (J-K)_2MASS 2.78, making it the reddest known field dwarf second only 2MASS J1207-39b among substellar companions. Near-IR spectroscopy shows a spectral type of L7 reveals triangular H-band continuum weak alkali (K I Na I) lines, hallmarks low surface gravity. astrometry from Hawaii Infrared Parallax Program gives distance 24.6+/-1.4 pc indicates much fainter J-band absolute magnitude than L...
We present the discovery of three new Milky Way satellites from our search for compact stellar overdensities in photometric catalog Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS 1, or PS1) 3pi survey. The first satellite, Laevens 3, is located at a heliocentric distance d=67+/-3 kpc. With total magnitude Mv=-4.4+/-0.3 half-light radius rh=7+/-2 pc, its properties resemble those outer halo globular clusters. second system, Draco II/Laevens 4 (Dra II), closer fainter...