Kevin Bundy
A5061431356- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Remote Sensing in Agriculture
- Photonic and Optical Devices
- Scientific Research and Discoveries
- Pulsars and Gravitational Waves Research
- Semiconductor Lasers and Optical Devices
- Cosmology and Gravitation Theories
- Spectroscopy and Laser Applications
- Advanced Vision and Imaging
- Optical Coherence Tomography Applications
- Calibration and Measurement Techniques
- Plant Water Relations and Carbon Dynamics
- Advanced Optical Sensing Technologies
- Optical Systems and Laser Technology
- Advanced Fiber Laser Technologies
- Atmospheric Ozone and Climate
University of California, Santa Cruz
2016-2025
ARC Centre of Excellence for All-sky Astrophysics
2024
ASTRO-3D
2024
University of Tasmania
2022
California Institute of Technology
2004-2020
The University of Tokyo
2012-2019
Kavli Institute for the Physics and Mathematics of the Universe
2012-2019
Lickenbrock
2019
Princeton University
2017
University of California, Berkeley
2000-2012
Abstract We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands Milky Way stars at high resolution and signal-to-noise ratios in near-infrared. Mapping Nearby Galaxies (MaNGA) survey obtaining spatially resolved spectroscopy for nearby galaxies (median <?CDATA $z\sim 0.03$?> ). extended Baryon Oscillation Spectroscopic (eBOSS)...
ABSTRACT The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from Baryon Oscillation Spectroscopic (BOSS). This ninth release (DR9) of SDSS project includes 535,995 new galaxy spectra (median z ∼ 0.52), 102,100 quasar 2.32), and 90,897 stellar spectra, along with presented in previous releases. These were obtained BOSS spectrograph taken between 2009 December 2011 July. In addition, parameters pipeline, which determines radial velocities, surface temperatures,...
The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in clustering matter over a larger volume than combined efforts all previous spectroscopic surveys large-scale structure. BOSS uses 1.5 million luminous galaxies as faint i = 19.9 10,000 deg2 BAO redshifts z < 0.7. Observations neutral hydrogen Lyα forest more 150,000 quasar spectra (g 22) will constrain redshift range 2.15 3.5. Early results from include first detection...
Hyper Suprime-Cam (HSC) is a wide-field imaging camera on the prime focus of 8.2m Subaru telescope summit Maunakea in Hawaii. A team scientists from Japan, Taiwan and Princeton University using HSC to carry out 300-night multi-band survey high-latitude sky. The includes three layers: Wide layer will cover 1400 deg$^2$ five broad bands ($grizy$), with $5\,\sigma$ point-source depth $r \approx 26$. Deep covers total 26~deg$^2$ four fields, going roughly magnitude fainter, while UltraDeep goes...
We present an overview of a new integral field spectroscopic survey called MaNGA (Mapping Nearby Galaxies at Apache Point Observatory), one three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV) that began on 2014 July 1. will investigate internal kinematic structure and composition gas stars unprecedented sample 10,000 nearby galaxies. summarize essential characteristics instrument design context MaNGA's key science goals prototype observations to demonstrate...
This paper documents the seventeenth data release (DR17) from Sloan Digital Sky Surveys; fifth and final fourth phase (SDSS-IV). DR17 contains complete of Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, which reached its goal surveying over 10,000 nearby galaxies. The MaNGA Stellar Library (MaStar) accompanies this data, providing observations almost 30,000 stars through instrument during bright time. also Galactic Evolution Experiment 2 (APOGEE-2) survey publicly...
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes second data release from this phase, and 14th SDSS overall (making Data Release Fourteen or DR14). makes taken by SDSS-IV its first two years (2014–2016 July) public. Like all previous releases, DR14 is cumulative, including most recent reductions calibrations phase began operations 2000. New public extended Baryon Oscillation Spectroscopic Survey; Apache Point...
Abstract The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in 2014 July. It pursues three core programs: Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2), Mapping Nearby Galaxies at APO (MaNGA), and Extended Baryon Oscillation Spectroscopic (eBOSS). As well as its program, eBOSS contains two major subprograms: Time Domain (TDSS) SPectroscopic IDentification ERosita Sources (SPIDERS). This paper describes first data release from SDSS-IV,...
Galactic winds are a prime suspect for the metal enrichment of intergalactic medium and may have strong influence on chemical evolution galaxies nature QSO absorption line systems. We use sample 1406 galaxy spectra at z~1.4 from DEEP2 redshift survey to show that blueshifted Mg II 2796, 2803 A is ubiquitous in starforming this epoch. This first detection frequent outflowing galactic z~1. The presence depth independent AGN spectral signatures or morphology; major mergers not prerequisite...
We describe the design, manufacture, and performance of bare-fiber integral field units (IFUs) for SDSS-IV survey MaNGA (Mapping Nearby Galaxies at APO) on Sloan 2.5 m telescope Apache Point Observatory (APO). is a luminosity-selected integral-field spectroscopic 10,000 local galaxies covering 360-1030 nm R ~ 2200. The IFUs have hexagonal dense packing fibers with regularity 3 um (RMS), throughput 96+/-0.5% from 350 to 1 in lab. Their sizes range 19 127 (3-7 layers) using Polymicro FBP...
Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by fourth phase of SDSS (SDSS-IV) across its three operation (July 2014-July 2017). This is third SDSS-IV, and fifteenth from (Data Release Fifteen; DR15). New come MaNGA - 4824 datacubes, as well stellar spectra in Stellar Library (MaStar), set survey-supported analysis products (e.g. gas kinematics, emission line, other maps) Data Analysis Pipeline (DAP), a new visualisation...
We describe the sample design for SDSS-IV MaNGA survey and present final properties of main samples along with important considerations using these science. Our target selection criteria were developed while simultaneously optimizing size distribution integral field units (IFUs), IFU allocation strategy, density to produce a defined in terms maximizing S/N, spatial resolution, size. strategy makes use redshift limits that only depend on i-band absolute magnitude ($M_i$), or, small subset our...
Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is an integral-field spectroscopic survey that one of three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV). MaNGA's 17 pluggable optical fiber-bundle integral field units (IFUs) will observe a sample 10,000 nearby galaxies distributed throughout SDSS imaging footprint (focusing particularly on North Galactic Cap). In each pointing these IFUs are deployed across 3° field; they yield spectral coverage...
We present Keck/LRIS spectra of over 200 galaxies with well-determined redshifts between 0.4 and 1.4. combine new measurements near-ultraviolet, low-ionization absorption lines previously measured masses, luminosities, colors, star formation rates to describe the demographics properties galactic flows. Among star-forming blue we find a net blueshift Fe ii greater than km s−1 (100 s−1) toward 2.5% (20%) galaxies. The fraction blueshifted does not vary significantly stellar mass, color, or...
The presence of extremely compact galaxies at z ∼ 2 and their subsequent growth in physical size has been the cause much puzzlement. We revisit question using deep infrared Wide Field Camera 3 data to probe rest-frame optical structure 935 selected with 0.4 < 2.5 stellar masses M* > 1010.7 M☉ UKIRT Ultra Deep Survey GOODS-South fields CANDELS survey. At each redshift, most sources are those little or no star formation, mean these systems fixed mass grows by a factor 3.5 ± 0.3 over this...
This paper documents the sixteenth data release (DR16) from Sloan Digital Sky Surveys; fourth and penultimate phase (SDSS-IV). is first of southern hemisphere survey Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new APOGEE-2 North are also included. DR16 notable as final for main cosmological program Extended Baryon Oscillation Spectroscopic Survey (eBOSS), all raw reduced spectra that project released here. includes Time Domain (TDSS) SPectroscopic IDentification...
Abstract The Subaru Prime Focus Spectrograph (PFS) is a massively multiplexed fiber-fed optical and near-infrared three-arm spectrograph (Nfiber = 2400, 380 ≤ λ 1260 nm, 1 $_{.}^{\circ}$3 diameter field of view). Here, we summarize the science cases in terms provisional plans for 300-night survey. We describe to constrain nature dark energy via survey emission line galaxies spanning comoving volume 9.3 h−3 Gpc3 redshift range 0.8 &lt; z 2.4. In each six bins, cosmological distances will...
We study the spatially resolved excitation properties of ionised gas in a sample 646 galaxies using integral field spectroscopy data from SDSS-IV MaNGA. Making use Baldwin-Philips-Terlevich diagnostic diagrams we demonstrate ubiquitous presence extended (kpc scale) low ionisation emission-line regions (LIERs) both star forming and quiescent galaxies. In LIER emission can be associated with diffuse gas, most evident as extra-planar edge-on systems. addition, identify two main classes...
We present new measurements of the evolution in Lyman break galaxy (LBG) population between z~4 and z~6. By utilizing extensive multiwavelength datasets available GOODS fields, we identify 2443 B, 506 V, 137 i'-band dropout galaxies likely to be at z~4, 5, 6. With goal understanding duration typical star formation episodes z>4, examine distribution stellar masses ages as a function cosmic time. find that fixed rest-UV luminosity, average do not increase significantly z~6 4. In order maintain...
We use a suite of semi-empirical models to predict the galaxy–galaxy merger rate and relative contributions bulge growth as function mass (both halo stellar), redshift, ratio. The empirical constraints on occupation distribution, evolved forward in time, robustly identify where when galaxy mergers occur. Together with results high-resolution simulations, this allows us quantify different properties (e.g., ratios, gas fractions, redshifts) population. compare observational constraints, find...
Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is acquiring integral-field spectroscopy for the largest sample of galaxies to date. By 2020, MaNGA Survey --- one three core programs in fourth-generation Sloan Digital Sky (SDSS-IV) will have observed a statistically representative 10$^4$ local Universe ($z\lesssim0.15$). In addition robust data-reduction pipeline (DRP), has developed data-analysis (DAP) that provides higher-level data products. To accompany first public release...
Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), one of three core programs in the Sloan Digital Sky Survey-IV (SDSS-IV), is an integral-field spectroscopic (IFS) survey roughly 10,000 nearby galaxies. It employs dithered observations using 17 hexagonal bundles 2 arcsec fibers to obtain resolved spectroscopy over a wide wavelength range 3,600-10,300A. To map internal variations within each galaxy, we need perform accurate {\it spectral surface photometry}, which calibrate...
We study the gas phase metallicity (O/H) and nitrogen abundance gradients traced by star-forming regions in a representative sample of 550 nearby galaxies stellar mass range 109–1011.5 M⊙ with resolved spectroscopic data from Sloan Digital Sky Survey IV Mapping Nearby Galaxies at Apache Point Observatory survey. Using strong-line ratio diagnostics (R23 O3N2 for N2O2 N/O) referencing to effective (half-light) radius (Re), we find that gradient steepens mass, lying roughly flat among log...
We present reverberation mapping results from the first year of combined spectroscopic and photometric observations Sloan Digital Sky Survey Reverberation Mapping Project. successfully recover time delays between $g+i$-band emission broad H$\beta$ line for a total 44 quasars, H$\alpha$ in 18 quasars. Time are computed using JAVELIN CREAM software traditional interpolated cross-correlation function (ICCF): Using well defined criteria, we report measurements 32 13 lags with JAVELIN, 42 17...
ABSTRACT Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is an optical fiber-bundle integral-field unit (IFU) spectroscopic survey that one of three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV). With a spectral coverage 3622–10354 Å and average footprint ∼500 arcsec 2 per IFU scientific data products derived from MaNGA will permit exploration internal structure statistically large sample 10,000 low-redshift galaxies unprecedented detail. Comprising...