M. Brodwin
A5005125516- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Astronomical Observations and Instrumentation
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Adaptive optics and wavefront sensing
- Scientific Research and Discoveries
- History and Developments in Astronomy
- Remote Sensing in Agriculture
- Calibration and Measurement Techniques
- Solar and Space Plasma Dynamics
- CCD and CMOS Imaging Sensors
- Spectroscopy and Laser Applications
- Dark Matter and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Pulsars and Gravitational Waves Research
- GNSS positioning and interference
- Spacecraft and Cryogenic Technologies
- Inertial Sensor and Navigation
- Neutrino Physics Research
University of Missouri–Kansas City
2015-2024
Massachusetts Institute of Technology
2018
University of Missouri
2013
Center for Astrophysics Harvard & Smithsonian
2009-2012
Michigan Science Center
2012
Kitt Peak National Observatory
2007-2011
Harvard University Press
2010-2011
Harvard University
2009-2011
University of Southern California
2010
CFA Institute
2009
We present Advanced Camera for Surveys, NICMOS, and Keck adaptive-optics-assisted photometry of 20 Type Ia supernovae (SNe Ia) from the Hubble Space Telescope (HST) Cluster Supernova Survey. The SNe were discovered over redshift interval 0.623 < z 1.415. Of these Ia, 14 pass our strict selection cuts are used in combination with world's sample to derive best current constraints on dark energy. new 10 beyond = 1, thereby nearly doubling statistical weight HST-discovered this redshift. Our...
We present the deepest 100 to 500 μm far-infrared observations obtained with Herschel Space Observatory as part of GOODS-Herschel key program, and examine infrared (IR) 3–500 spectral energy distributions (SEDs) galaxies at 0 < z 2.5, supplemented by a local reference sample from IRAS, ISO, Spitzer, AKARI data. determine projected star formation densities their radio mid-IR continuum sizes.
Mid-infrared photometry provides a robust technique for identifying active galaxies. While the ultraviolet to mid-infrared continuum of normal galaxies is dominated by composite stellar black body curve and peaks at approximately 1.6 microns, power law. Consequently, with sufficient wavelength baseline, one can easily distinguish AGN from populations. Mirroring tendency be bluer than in ultraviolet, where (and stars) sample blue, rising portion spectra, tend redder mid-infrared, red, falling...
We present a catalog of galaxy clusters selected via their Sunyaev-Zel'dovich (SZ) effect signature from 2500 deg$^2$ South Pole Telescope (SPT) data. This work represents the complete sample detected at high significance in 2500-square-degree SPT-SZ survey, which was completed 2011. A total 677 (409) cluster candidates are identified above signal-to-noise threshold $\xi$ =4.5 (5.0). Ground- and space-based optical near-infrared (NIR) imaging confirms overdensities similarly colored galaxies...
We explore the connection between different classes of active galactic nuclei (AGNs) and evolution their host galaxies, by deriving galaxy properties, clustering, Eddington ratios AGNs selected in radio, X-ray, infrared. study a sample 585 at 0.25 < z 0.8 using redshifts from AGN Galaxy Evolution Survey (AGES) data radio (WSRT 1.4 GHz), X-rays (Chandra XBootes), mid-IR (IRAC Shallow Survey). The IR samples show modest overlap, indicating that to flux limits survey, they represent largely...
We report the results of an 87 square-degree point-source survey centered at R.A. 5h30m, decl. -55 deg. taken with South Pole Telescope (SPT) 1.4 and 2.0 mm wavelengths arc-minute resolution milli-Jansky depth. Based on ratio flux in two bands, we separate detected sources into populations, one consistent synchrotron emission from active galactic nuclei (AGN) thermal dust. present source counts for each population 11 to 640 mJy 4.4 800 mm. The are dominated by synchrotron-dominated across...
We present a set of low resolution empirical SED templates for AGNs and galaxies in the wavelength range from 0.03 to 30 microns based on multi-wavelength photometric observations NOAO Deep-Wide Field Survey Bootes field spectroscopic AGN Galaxy Evolution Survey. Our training sample is comprised 14448 redshift 0<~z<~1 5347 likely 0<~z<~5.58. use our determine redshifts AGNs. While they are relatively accurate galaxies, their accuracies strong function luminosity ratio between galaxy...
Using the Atacama Large Millimeter/submillimeter Array, we have conducted a blind redshift survey in 3 mm atmospheric transmission window for 26 strongly lensed dusty star-forming galaxies (DSFGs) selected with South Pole Telescope. The sources were to S1.4 > 20 mJy and dust-like spectrum and, remove low-z sources, not bright radio (S843 MHz < 6 mJy) or far-infrared counterparts (S100 μm 1 Jy, S60 200 mJy). We robustly detect 44 line features our survey, which identify as redshifted emission...
Stern et al.(2012) presented a study of WISE selection AGN in the 2 deg^2 COSMOS field, finding that simple criterion W1-W2>=0.8 provides highly reliable and complete sample for W2<15.05, where W1 W2 passbands are centered at 3.4 4.6 microns, respectively. Here we extend this using larger 9 NOAO Deep Wide-Field Survey Bootes field which also has considerably deeper observations than find color-cut significantly loses reliability fainter fluxes. We define modified combining W1-W2 color...
We present a detection-significance-limited catalog of 21 Sunyaev-Zel'dovich selected galaxy clusters. These clusters, along with 1 unconfirmed candidate, were identified in 178 deg^2 sky surveyed 2008 by the South Pole Telescope to depth 18 uK-arcmin at 150 GHz. Optical imaging from Blanco Cosmology Survey (BCS) and Magellan telescopes provided photometric (and some cases spectroscopic) redshift estimates, redshifts ranging z=0.15 z>1, median z = 0.74. Of confirmed three previously as...
(abridged) We present cosmological constraints obtained from galaxy clusters identified by their Sunyaev-Zel'dovich effect signature in the 2500 square degree South Pole Telescope Sunyaev Zel'dovich survey. consider 377 cluster candidates at z>0.25 with a detection significance greater than five, corresponding to 95% purity threshold for compute on models using measured abundance as function of mass and redshift. include additional multi-wavelength observations, including Chandra X-ray data...
We present a catalog of galaxy cluster candidates, selected through their Sunyaev–Zel'dovich (SZ) effect signature in the first 720 deg2 South Pole Telescope (SPT) survey. This area was mapped with SPT 2008 and 2009 austral winters to depth ∼18 μKCMB-arcmin at 150 GHz; 550 it also ∼44 95 GHz. Based on optical imaging all 224 candidates near-infrared majority we have found and/or infrared counterparts for 158, which then classify as confirmed clusters. Of these 158 clusters, 135 were...
We use measurements from the South Pole Telescope (SPT) Sunyaev Zel'dovich (SZ) cluster survey in combination with X-ray to constrain cosmological parameters. present a statistical method that fits for scaling relations of SZ and observables mass while jointly fitting cosmology. The is generalizable multiple observables, self-consistently accounts effects selection uncertainties calibration on derived constraints. apply this data set consisting an SZ-selected catalog 18 galaxy clusters at z...
We trace the assembly history of red galaxies since z=1, by measuring their evolving space density with B-band luminosity function. Our sample 39599 galaxies, selected from 6.96 square degrees imaging NOAO Deep Wide-Field and Spitzer IRAC Shallow surveys, is an order magnitude larger, in size volume, than comparable samples literature. measure a higher z=0.9 some recent literature, part because we account for faint yet significant galaxy flux which falls outside our photometric aperture. The...
Observations with Spitzer Space Telescope have recently revealed a significant population of high-redshift z~2 dust-obscured galaxies (DOGs) large mid-IR to UV luminosity ratios. These been missed in traditional optical studies the distant universe. We present simple method for selecting this high-z based solely on ratio observed 24um R-band flux density. In 8.6 sq.deg Bootes NDWFS Field, we uncover ~2,600 DOG candidates (= 0.089/sq.arcmin) densities F24>0.3mJy and (R-[24])>14 (i.e.,...
Infrared source counts at wavelengths 3 < lambda 10 um cover more than magnitudes in brightness, four orders of magnitude surface density, and reach an integrated density 10^5 sources/deg^2. At m<14 mag, most the sources are Galactic stars, agreement with models. After removal galaxy consistent what few measurements exist nearby wavelengths. 3.6 4.5 um, follow expectations a Euclidean world model down to ~16 mag drop below curve for fainter magnitudes. Counts these begin show decreasing...
We report the discovery of a galaxy cluster at z=1.62 located in Spitzer Wide-Area Infrared Extragalactic survey XMM-LSS field. This structure was selected solely as an overdensity galaxies with red Spitzer/IRAC colors, satisfying [3.6]-[4.5] > -0.1 AB mag. Photometric redshifts derived from Subaru XMM Deep Survey (BViz-bands), UKIRT Survey-Ultra-Deep (UKIDSS-UDS, JK-bands), and Public UDS (3.6-8.0 micron) show that this corresponds to surface density z ~ 1.6 is more than 20 sigma above mean...
We have identified 335 galaxy cluster and group candidates, 106 of which are at z > 1, using a 4.5 um selected sample objects from 7.25 deg^2 region in the Spitzer Infrared Array Camera (IRAC) Shallow Survey. Clusters were as 3-dimensional overdensities wavelet algorithm, based on photometric redshift probability distributions derived IRAC NOAO Deep Wide-Field Survey data. estimate only ~10% detections spurious. To date 12 1 candidates been confirmed spectroscopically, redshifts 1.06 to...
We measure the rest-frame colors (dust-corrected), infrared luminosities, star formation rates, and stellar masses of 92 galaxies in a Spitzer-selected cluster at z=1.62. By fitting spectral energy distributions (SEDs) to 10-band photometry (0.4 micron < lambda(obs) <8 micron) measuring 24 fluxes for 12 spectroscopically confirmed 80 photometrically selected members, we discover an exceptionally high level core ~1700 Msun/yr per Mpc^2. The define strong blue sequence (U-V) color span range...
The South Pole Telescope (SPT) is currently surveying 2500 deg^2 of the southern sky to detect massive galaxy clusters out epoch their formation using Sunyaev-Zel'dovich (SZ) effect. This paper presents a catalog 26 most significant SZ cluster detections in full survey region. includes 14 which have been previously identified and 12 that are new discoveries. These were fields observed two differing noise depths: 1500 at final SPT depth 18 uK-arcmin 150 GHz, 1000 54 uK-arcmin. Clusters...
We report the first results from Clusters Around Radio-Loud AGN (CARLA) program, a Cycle 7 and 8 Spitzer Space Telescope snapshot program to investigate environments of large sample obscured unobscured luminous radio-loud at 1.2 < z 3.2. These data, obtained for 387 fields, reach 3.6 4.5 um depths [3.6] (AB) = 22.6 [4.5] 22.9 95% completeness level, which is two three times fainter than L* in this redshift range. By using color cut [3.6]-[4.5] > -0.1 (AB), efficiently selects high-redshift...
The Infrared Array Camera (IRAC) shallow survey covers 8.5 deg2 in the NOAO Deep Wide-Field Survey Boötes with three or more 30 s exposures per position. An overview of design, reduction, calibration, star-galaxy separation, and initial results is provided. includes ≈370,000, 280,000, 38,000, 34,000 sources brighter than 5 σ limits 6.4, 8.8, 51, 50 μJy at 3.6, 4.5, 5.8, 8 μm, respectively, including some unusual spectral energy distributions.