W. S. Burgett
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View article: LHS 2803B: A very wide mid-T dwarf companion to an old M dwarf identified from Pan-STARRS1
LHS 2803B: A very wide mid-T dwarf companion to an old M dwarf identified from Pan-STARRS1 Open
We report the discovery of a wide (1400 AU projected separation), common proper motion companion to the nearby M dwarf LHS 2803 (PSO J207.0300-13.7422). This object was discovered during our census of the local T dwarf population using Pan…
View article: Wide cool and ultracool companions to nearby stars from pan-STARRS 1
Wide cool and ultracool companions to nearby stars from pan-STARRS 1 Open
We present the discovery of 57 wide (>5″) separation, low-mass (stellar and substellar) companions to stars in the solar neighborhood identified from Pan-STARRS 1 (PS1) data and the spectral classification of 31 previously known companions…
View article: M DWARF ACTIVITY in the PAN-STARRS1 MEDIUM-DEEP SURVEY: FIRST CATALOG and ROTATION PERIODS
M DWARF ACTIVITY in the PAN-STARRS1 MEDIUM-DEEP SURVEY: FIRST CATALOG and ROTATION PERIODS Open
We report on an ongoing project to investigate activity in the M dwarf stellar population observed by the Pan-STARRS1 Medium-Deep Survey (PS1-MDS). Using a custom-built pipeline, we refine an initial sample of ∼4 million sources in PS1-MDS…
View article: A Pan-STARRS 1 study of the relationship between wide binarity and planet occurrence in the Kepler field
A Pan-STARRS 1 study of the relationship between wide binarity and planet occurrence in the Kepler field Open
The NASA Kepler mission has revolutionized time-domain astronomy and has massively expanded the number of known extrasolar planets. However, the effect of wide multiplicity on exoplanet occurrence has not been tested with this data set. We…
View article: Pan-STARRS Pixel Processing: Detrending, Warping, Stacking
Pan-STARRS Pixel Processing: Detrending, Warping, Stacking Open
The Pan-STARRS1 (PS1) Science Consortium has carried out a set of imaging surveys using the 1.4 gigapixel GPC1 camera on the PS1 telescope. As this camera is composed of many individual electronic readouts and covers a very large field of …
View article: Supermassive Black Hole Binary Candidates from the Pan-STARRS1 Medium Deep Survey
Supermassive Black Hole Binary Candidates from the Pan-STARRS1 Medium Deep Survey Open
We present a systematic search for periodically varying quasar and supermassive black hole binary (SMBHB) candidates in the Pan-STARRS1 Medium Deep Survey (MDS). From ∼9000 color-selected quasars in an ∼50 ° 2 sky area, we initially identi…
View article: PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1
PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1 Open
We present a nuclear transient event, PS1-13cbe, that was first discovered in the Pan-STARRS1 survey in 2013. The outburst occurred in the nucleus of the galaxy SDSS J222153.87+003054.2 at z = 0.123 55, which was classified as a Seyfert 2 …
View article: Precision Distances to Dwarf Galaxies and Globular Clusters from Pan-STARRS1 3π RR Lyrae
Precision Distances to Dwarf Galaxies and Globular Clusters from Pan-STARRS1 3π RR Lyrae Open
We present new spatial models and distance estimates for globular clusters and dwarf spheroidals orbiting our Galaxy based on RR Lyrae (RRab) stars in the Pan-STARRS1 (PS1) 3 π survey. Using the PS1 sample of RRab stars from Sesar et al. i…
View article: PS1-13cbe: The Rapid "Turn on" of a Seyfert 1
PS1-13cbe: The Rapid "Turn on" of a Seyfert 1 Open
We present a nuclear transient event, PS1-13cbe, that was first discovered in the Pan-STARRS1 survey in 2013. The outburst occurred in the nucleus of the galaxy SDSS J222153.87+003054.2 at $z = 0.12355$, which was classified as a Seyfert 2…
View article: Cepheids in M31: The PAndromeda Cepheid Sample
Cepheids in M31: The PAndromeda Cepheid Sample Open
We present the largest Cepheid sample in M31 based on the complete Pan-STARRS1 survey of Andromeda (PAndromeda) in the r P1 , i P1 , and g P1 bands. We find 2686 Cepheids with 1662 fundamental-mode Cepheids, 307 first-overtone Cepheids, 27…
View article: Overview and status of the Giant Magellan Telescope project
Overview and status of the Giant Magellan Telescope project Open
The Giant Magellan Telescope project is proceeding with design, fabrication, and site construction. The first of the seven required 8.4-m primary mirror segments is completed and in storage, three segments are in various stages of grinding…
View article: The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample
The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample Open
We present optical light curves, redshifts, and classifications for spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium Deep Survey. We detail improvements to the PS1 SN photometry, astrometry…
View article: Galactic reddening in 3D from stellar photometry – an improved map
Galactic reddening in 3D from stellar photometry – an improved map Open
We present a new 3D map of interstellar dust reddening, covering three quarters of the sky (declinations of δ ≳ −30°) out to a distance of several kiloparsecs. The map is based on high-quality stellar photometry of 800 million stars from P…
View article: Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters
Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters Open
We use 1169 Pan-STARRS supernovae (SNe) and 195 low- z ( z < 0.1) SNe Ia to measure cosmological parameters. Though most Pan-STARRS SNe lack spectroscopic classifications, in a previous paper we demonstrated that photometrically classified…
View article: An updated Type II supernova Hubble diagram
An updated Type II supernova Hubble diagram Open
We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 ≲ z ≲ 0.335 range, with a view to re-examining their utility as distance indicators. Specifically, we apply the expanding photosphere m…
View article: Physical Properties of 15 Quasars at z ≳ 6.5
Physical Properties of 15 Quasars at z ≳ 6.5 Open
Quasars are galaxies hosting accreting supermassive black holes; due to their brightness, they are unique probes of the early universe. To date, only a few quasars have been reported at (<800 Myr after the big bang). In this work, we prese…
View article: THE PAN-STARRS1 DISTANT z > 5.6 QUASAR SURVEY: MORE THAN 100 QUASARS WITHIN THE FIRST GYR OF THE UNIVERSE
THE PAN-STARRS1 DISTANT z > 5.6 QUASAR SURVEY: MORE THAN 100 QUASARS WITHIN THE FIRST GYR OF THE UNIVERSE Open
Luminous quasars at z > 5.6 can be studied in detail with the current generation of telescopes and provide us with unique information on the first gigayear of the universe. Thus far, these studies have been statistically limited by the num…
View article: Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample
Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample Open
RR Lyrae stars may be the best practical tracers of Galactic halo (sub-)structure and kinematics. The PanSTARRS1 (PS1) survey offers multi-band, multi-epoch, precise photometry across much of the sky, but a robust identification of RR L…
View article: 2MASS 0213+3648 C: A wide T3 benchmark companion to an an active, old M dwarf binary
2MASS 0213+3648 C: A wide T3 benchmark companion to an an active, old M dwarf binary Open
We present the discovery of a 360 au separation T3 companion to the tight (3.1 au) M4.5+M6.5 binary 2MASS J02132062+3648506. This companion was identified using Pan-STARRS 1 data and despite its relative proximity to the Sun (22.2_{-4.0}^{…
View article: The Pan-STARRS1 Surveys
The Pan-STARRS1 Surveys Open
Pan-STARRS1 has carried out a set of distinct synoptic imaging sky surveys including the $3π$ Steradian Survey and the Medium Deep Survey in 5 bands ($grizy_{P1}$). The mean 5$σ$ point source limiting sensitivities in the stacked 3$π$ Ster…
View article: Hiding in plain sight – recovering clusters of galaxies with the strongest AGN in their cores
Hiding in plain sight – recovering clusters of galaxies with the strongest AGN in their cores Open
A key challenge in understanding the feedback mechanism of active galactic nucleus (AGN) in Brightest Cluster Galaxies (BCGs) is the inherent rarity of catching an AGN during its strong outburst phase. This is exacerbated by the ambiguity …
View article: Cosmology with Contaminated Samples: Methods of Measuring Dark Energy with Photometrically Classified Pan-STARRS Supernovae
Cosmology with Contaminated Samples: Methods of Measuring Dark Energy with Photometrically Classified Pan-STARRS Supernovae Open
The Pan-STARRS (PS1) Medium Deep Survey discovered over 5,000 likely supernovae (SNe) but obtained spectral classifications for just 10% of its SN candidates. We measured spectroscopic host galaxy redshifts for 3,073 of these likely SNe an…
View article: THE PAN-STARRS 1 DISCOVERIES OF FIVE NEW NEPTUNE TROJANS
THE PAN-STARRS 1 DISCOVERIES OF FIVE NEW NEPTUNE TROJANS Open
In this work, we report the detection of seven Neptune Trojans (NTs) in the Pan-STARRS 1 (PS1) survey. Five of these are new discoveries, consisting of four L4 Trojans and one L5 Trojan. Our orbital simulations show that the L5 Trojan stab…
View article: Dust in three dimensions in the Galactic plane
Dust in three dimensions in the Galactic plane Open
We present three-dimensional maps in monochromatic extinction A0 and the extinction parameter R0 within a few degrees of the Galactic plane. These are inferred using photometry from the Pan-STARRS1 and Spitzer GLIMPSE (Galactic Legacy Infr…
View article: A synoptic map of halo substructures from the Pan-STARRS1 3π survey
A synoptic map of halo substructures from the Pan-STARRS1 3π survey Open
We present a panoramic map of the entire Milky Way halo north of $\\delta \\sim -30{^\\circ }$ (∼30 000 deg2), constructed by applying the matched-filter technique to the Pan-STARRS1 3π Survey data set. Using single-epoch photometry reachi…
View article: Slow-blue nuclear hypervariables in PanSTARRS-1
Slow-blue nuclear hypervariables in PanSTARRS-1 Open
We discuss 76 large amplitude transients (Δm > 1.5) occurring in the nuclei of galaxies, nearly all with no previously known active galactic nucleus (AGN). They have been discovered as part of the Pan-STARRS1 (PS1) 3π survey, by comparison…
View article: A multiwavelength photometric census of AGN and star formation activity in the brightest cluster galaxies of X-ray selected clusters
A multiwavelength photometric census of AGN and star formation activity in the brightest cluster galaxies of X-ray selected clusters Open
Despite their reputation as being ‘red and dead’, the unique environment inhabited by brightest cluster galaxies (BCGs) can often lead to a self-regulated feedback cycle between radiatively cooling intracluster gas and star formation and a…