A5060836964- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Galaxies: Formation, Evolution, Phenomena
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Cosmology and Gravitation Theories
- Planetary Science and Exploration
- Pulsars and Gravitational Waves Research
- Adaptive optics and wavefront sensing
- Dark Matter and Cosmic Phenomena
- Scientific Research and Discoveries
- Radio Astronomy Observations and Technology
- Solar and Space Plasma Dynamics
- CCD and CMOS Imaging Sensors
- Optical Systems and Laser Technology
- History and Developments in Astronomy
- Infrared Target Detection Methodologies
- Geophysics and Gravity Measurements
- Atomic and Subatomic Physics Research
- Calibration and Measurement Techniques
- Spacecraft and Cryogenic Technologies
Friedrich-Loeffler-Institut
2025
University of Hawaii System
2008-2020
Laboratoire de Géologie de l’École Normale Supérieure
2019
University of Hawaiʻi at Mānoa
2003-2018
École Normale Supérieure - PSL
2018
Max Planck Institute for Astronomy
2015
Queen's University Belfast
2015
Trinity House
2013
International Franchise Association
2009
Monterey Institute for Research in Astronomy
2004-2007
view Abstract Citations (3327) References (46) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Statistics of Peaks Gaussian Random Fields Bardeen, J. M. ; Bond, R. Kaiser, N. Szalay, A. S. A set new mathematical results on the theory random fields is presented, and application such calculations in cosmology to treat questions structure formation from small-amplitude initial density fluctuations addressed. point process equation discussed, giving general...
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...
view Abstract Citations (1683) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Excursion Set Mass Functions for Hierarchical Gaussian Fluctuations Bond, J. R. ; Cole, S. Efstathiou, G. Kaiser, N. It is pointed out that most schemes determining the mass function of virialized objects from statistics initial density perturbation field suffer cloud-in-cloud problem miscounting number low-mass clumps, many which would have been subsumed into...
view Abstract Citations (1407) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the spatial correlations of Abell clusters. Kaiser, N. If rich clusters formed where primordial density enhancement, when averaged over an appropriate volume, was unusually large, then they give a biased measure large-scale correlation function determiend by probability distribution fluctuations on cluster mass scale. this Gaussian, is amplified. The...
The DEEP2 and COMBO-17 surveys are used to study the evolution of luminosity function red blue galaxies $z \sim 1$. Schechter fits show that, since = 1$, $M^*_B$ dims by $\sim$ 1.3 mag per unit redshift for both color classes, $ϕ^*$ shows little change, while has formally nearly quadrupled. At face value, number density remained roughly constant $ z whereas that been rising. Luminosity densities support conclusions, but we note most red-galaxy occurs between our data local in highest bin,...
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...
We describe the design and data sample from DEEP2 Galaxy Redshift Survey, densest largest precision-redshift survey of galaxies at z ~ 1 completed to date. The has conducted a comprehensive census massive galaxies, their properties, environments, large-scale structure down absolute magnitude M_B = -20 via ~90 nights observation on DEIMOS spectrograph Keck Observatory. covers an area 2.8 deg^2 divided into four separate fields, observed limiting apparent R_AB=24.1. Objects with < 0.7 are...
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,...
The 60-μm luminosity function for galaxies detected by IRAS is determined from a compilation of samples with highly complete redshift information totalling 2818 galaxies, including the new QMC–Cambridge–Durham survey and many nearby, low-luminosity galaxies. We use clustering-independent maximum likelihood methods throughout. A non-parametric estimator used to determine shape function, best parameter set found suitable analytic form. find be well described Gaussian dependence on...
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...
The DEIMOS spectrograph has now been installed on the Keck-II telescope and commissioning is nearly complete. DEEP2 Redshift Survey, which will take approximately 120 nights at Keck Observatory over a three year period designed to utilize power of DEIMOS, began in summer 2002. multiplexing high efficiency enables us target 1000 faint galaxies per clear night. Our goal gather high-quality spectra \~60,000 with z>0.75 order study properties large scale clustering z ~ 1. survey be executed...
We have used the Press–Schechter approximation to calculate abundance and large-scale clustering of dark haloes in CDM cosmogony. Applying these results quasars at z = 3−4, we find a wide range which are both sufficiently massive numerous host quasars, prediction for strength is correspondingly uncertain. Current estimates quasar require that parent lie most end allowed range, with velocity dispersions 550−900 km s−1, luminosity be quite tightly correlated halo properties. Another...
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...
The evolution of the B-band galaxy luminosity function is measured using a sample more than 11,000 galaxies with spectroscopic redshifts from DEEP2 Redshift Survey. rest-frame M_B versus U-B color-magnitude diagram shows that bi-modality seen in locally still present at z > 1. Dividing trough this color bimodality into predominantly red and blue galaxies, we find each type evolves differently. Blue counts tend to shift brighter magnitudes constant number density, while remain largely...
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 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...