Eric Gawiser
A5077555623- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Gamma-ray bursts and supernovae
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Adaptive optics and wavefront sensing
- Dark Matter and Cosmic Phenomena
- Scientific Research and Discoveries
- CCD and CMOS Imaging Sensors
- Photocathodes and Microchannel Plates
- Superconducting and THz Device Technology
- History and Developments in Astronomy
- Calibration and Measurement Techniques
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Geophysics and Gravity Measurements
- Distributed and Parallel Computing Systems
- Gaussian Processes and Bayesian Inference
- Remote Sensing in Agriculture
- Advanced Vision and Imaging
Rutgers, The State University of New Jersey
2015-2024
Rutgers Sexual and Reproductive Health and Rights
2009-2024
Flatiron Health (United States)
2018-2021
Flatiron Institute
2018-2021
University of Louisville
2018
National Aeronautics and Space Administration
2005-2018
Leiden University
2018
International Centre for Radio Astronomy Research
2018
The University of Western Australia
2018
Australian National University
2018
The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) is designed to document the first third of galactic evolution, over approximate redshift (z) range 8--1.5. It will image >250,000 distant galaxies using three separate cameras on Hubble Space Telescope, from mid-ultraviolet near-infrared, and find measure Type Ia supernovae at z>1.5 test their accuracy as standardizable candles for cosmology. Five premier multi-wavelength sky regions are selected, each with...
The Simons Observatory (SO) is a new cosmic microwave background experiment being built on Cerro Toco in Chile, due to begin observations the early 2020s. We describe scientific goals of experiment, motivate design, and forecast its performance. SO will measure temperature polarization anisotropy six frequency bands: 27, 39, 93, 145, 225 280 GHz. initial configuration have three small-aperture 0.5-m telescopes (SATs) one large-aperture 6-m telescope (LAT), with total 60,000 cryogenic...
This paper describes the Hubble Space Telescope imaging data products and reduction procedures for Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS). survey is designed to document evolution of galaxies black holes at $z\sim1.5-8$, study Type Ia SNe beyond $z>1.5$. Five premier multi-wavelength sky regions are selected, each with extensive multiwavelength observations. The primary CANDELS consist obtained in Wide Field Camera 3 / infrared channel (WFC3/IR) UVIS channel,...
A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of exciting science opportunities next decade. The Large Synoptic Survey Telescope (LSST) have an effective aperture 6.7 meters and imaging camera field view 9.6 deg^2, be devoted ten-year 20,000 deg^2 south +15 deg. Each pointing imaged 2000 times fifteen second exposures six broad from 0.35 1.1 microns, total point-source depth r~27.5. LSST Science Book describes basic...
Observations of damped Lyman alpha systems offer a unique window on the neutral-gas reservoirs that gave rise to galaxies at high redshifts. This review focuses critical properties such as H I and metal content gas independent evidence for star formation. Together, these provide an emerging picture gravitationally bound objects in which accretion from IGM replenishes consumed by Other dust content, molecular ionized-gas kinematics, galaxy identifications are also reviewed. These point...
We present a UV-to-mid infrared multi-wavelength catalog in the CANDELS/GOODS-S field, combining newly obtained CANDELS HST/WFC3 F105W, F125W, and F160W data with existing public data. The is based on source detection WFC3 band. mosaic includes from deep wide observations as well previous ERS HUDF09 programs. reaches 5$\sigma$ limiting depth (within an aperture of radius 0.17 arcsec) 27.4, 28.2, 29.7 AB for wide, deep, HUDF regions, respectively. contains 34930 sources representative 50%...
We present a sensitive 870 micron survey of the Extended Chandra Deep Field South (ECDFS) using LABOCA on APEX telescope. The ECDFS Submillimetre Survey (LESS) covers full 30' x field size and has uniform noise level 1.2 mJy/beam. LESS is thus largest contiguous deep submillimetre undertaken to date. properties our map show clear evidence that we are beginning be affected by confusion noise. catalog 126 SMGs detected with significance above 3.7 sigma. exhibits deficit bright relative...
We describe the results of an extremely deep, 0.28 deg2 survey for z = 3.1 Lyα emission-line galaxies in Extended Chandra Deep Field-South. By using a narrowband 5000 Å filter and complementary broadband photometry from MUSYC survey, we identify statistically complete sample 162 with monochromatic fluxes brighter than 1.5 × 10-17 ergs cm-2 s-1 observer's frame equivalent widths greater 80 Å. show that width distribution these objects follows exponential rest-frame scale length w0 76 In...
Abstract We present an investigation into the first 500 Myr of galaxy evolution from Cosmic Evolution Early Release Science (CEERS) survey. CEERS, one 13 JWST ERS programs, targets formation z ∼ 0.5 to >10 using several imaging and spectroscopic modes. make use epoch CEERS NIRCam imaging, spanning 35.5 arcmin 2 , search for candidate galaxies at > 9. Following a detailed data reduction process implementing custom steps produce high-quality reduced images, we perform multiband...
We report the discovery of a candidate galaxy with photo-z z~12 in first epoch JWST Cosmic Evolution Early Release Science (CEERS) Survey. Following conservative selection criteria we identify source robust z_phot = 11.8^+0.3_-0.2 (1-sigma uncertainty) m_F200W=27.3, and >7-sigma detections five filters. The is not detected at lambda < 1.4um deep imaging from both HST JWST, has faint ~3-sigma F150W F160W, which signal Ly-alpha break near red edge filters, implying z~12. This object (Maisie's...
We present results from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) photometric redshift methods investigation. In this investigation, eleven participants, each using a different combination of code, template spectral energy distributions (SEDs) and priors, are used to examine properties redshifts applied deep fields with broad-band multi-wavelength coverage. The photometry includes U-band through mid-infrared filters was derived TFIT method. Comparing...
We present photometry and derived redshifts from up to eleven bandpasses for 9927 galaxies in the Hubble Ultra Deep field (UDF), covering an observed wavelength range near-ultraviolet (NUV) near-infrared (NIR) with Space Telescope observations. Our Wide Field Camera 3 (WFC3)/UV F225W, F275W, F336W image mosaics ultra-violet UDF (UVUDF) imaging campaign are newly calibrated correct charge transfer inefficiency, use new dark calibrations minimize background gradients pattern noise. NIR WFC3/IR...
Abstract We report the discovery of an accreting supermassive black hole at z = 8.679. This galaxy, denoted here as CEERS_1019, was previously discovered a Ly α -break galaxy by Hubble with redshift from Keck. As part Cosmic Evolution Early Release Science (CEERS) survey, we have observed this source JWST/NIRSpec, MIRI, NIRCam, and NIRCam/WFSS uncovered plethora emission lines. The H β line is best fit narrow plus broad component, where latter measured 2.5 σ FWHM ∼1200 km s −1 . conclude...
We present JWST/NIRSpec prism spectroscopy of seven galaxies selected from the Cosmic Evolution Early Release Science Survey (CEERS) NIRCam imaging with photometric redshifts z_phot>8. measure emission line z=7.65 and 8.64 for two galaxies, z=9.77(+0.37,-0.29) 10.01(+0.14,-0.19) others via detection continuum breaks consistent Lyman-alpha opacity a mostly neutral intergalactic medium. The presence (absense) strong (strong lines) give high confidence that these are at z>9.6, but break-derived...
Lyman Break Galaxy (LBG) candidates at z>10 are rapidly being identified in JWST/NIRCam observations. Due to the (redshifted) break produced by neutral hydrogen absorption of rest-frame UV photons, these sources expected drop out bluer filters while well detected redder filters. However, here we show that dust-enshrouded star-forming galaxies lower redshifts (z<7) may also mimic near-infrared (near-IR) colors LBGs, representing potential contaminants LBG candidate samples. First, analyze...
We present rest-frame optical emission-line flux ratio measurements for five $z>5$ galaxies observed by the JWST Near-Infared Spectrograph (NIRSpec) in SMACS 0723 Early Release Observations. add several quality-control and post-processing steps to NIRSpec pipeline reduction products order ensure reliable relative calibration of emission lines that are closely separated wavelength, despite uncertain \textit{absolute} spectrophotometry current version reductions. Compared $z\sim3$ literature,...
Abstract We analyze rest-frame ultraviolet to optical spectra of three z ≃ 7.47–7.75 galaxies whose Ly α emission lines were previously detected with Keck/MOSFIRE observations, using the JWST/NIRSpec observations from Cosmic Evolution Early Release Science survey. From NIRSpec data, we confirm systemic redshifts these emitters, and emission-line ratio diagnostics indicate highly ionized metal-poor. investigate line properties, including flux, velocity offset, spatial extent. For one galaxy...
Abstract We present the star formation rate–stellar mass (SFR– M * ) relation for galaxies in Cosmic Evolution Early Release Science survey at 4.5 ≤ z 12. model JWST and Hubble Space Telescope rest-UV rest-optical photometry of with flexible histories (SFHs) using BAGPIPES. consider SFRs averaged from SFHs over 10 Myr (SFR 100 ), where probes on these timescales, effectively tracing nebular emission lines (on ~10 timescales) UV/optical continuum ~100 timescales). measure slope, normalization...
We studied the clustering properties and multiwavelength spectral energy distributions of a complete sample 162 Ly Alpha-Emitting (LAE) galaxies at z=3.1 discovered in deep narrow-band MUSYC imaging Extended Chandra Deep Field South. LAEs were selected to have observed frame equivalent widths >80A emission line fluxes >1.5E-17 erg/cm^2/s. Only 1% our LAE appears host AGN. The exhibit moderate spatial correlation length r_0=3.6+0.8-1.0 Mpc, corresponding bias factor b=1.7+0.3-0.4, which...
We discuss accurate metallicity measurements for 125 damped Lyα (DLA) systems at 0.5 < z 5, including ≈50 new from our recently published Echellette Spectrograph and Imager surveys. This data set is analyzed to determine the age-metallicity relation of neutral gas in universe. Contrary previous analyses, this sample shows statistically significant evolution cosmic mean metallicity. The best linear fit -0.26 ± 0.07 dex per unit redshift. DLA continue maintain a floor ≈1/700 solar, independent...
We present UBVRIz' optical images taken with MOSAIC on the CTIO 4 m telescope of 0.32 deg2 Extended Hubble Deep Field-South. This is one four fields comprising MUSYC survey, which optimized for study galaxies at z = 3, active galactic nucleus (AGN) demographics, and Galactic structure. Our methods used astrometric calibration, weighted image combination, photometric calibration in AB magnitudes are described. calculate corrected aperture photometry its uncertainties find through tests that...
We present deep optical 18-medium-band photometry from the Subaru telescope over ~30' x 30' Extended Chandra Deep Field-South (ECDF-S), as part of Multiwavelength Survey by Yale-Chile (MUSYC). This field has a wealth ground- and space-based ancillary data, contains GOODS-South Hubble Ultra Field. combine imaging with existing UBVRIzJHK Spitzer IRAC images to create uniform catalog. Detecting sources in MUSYC BVR image we find ~40,000 galaxies R_AB<25.3, median 5 sigma limit 18 medium bands....
We selected 40 candidate Lyman Alpha Emitting galaxies (LAEs) at z ~=3.1 with observed frame equivalent widths >150A and inferred emission line fluxes >2.5x10^-17 ergs/cm^2/s from deep narrow-band broad-band MUSYC images of the Extended Chandra Deep Field South. Covering 992 sq. arcmin, this is largest ``blank field'' surveyed for LAEs ~3, allowing an improved estimate space density population 3+-1x10^-4 h_70^3/Mpc^3. Spectroscopic follow-up 23 candidates yielded 18 redshifts, all ~=3.1....
We discovered a sample of 250 Lyα emitting (LAE) galaxies at z ≃ 2.1 in an ultra-deep 3727 Å narrow-band MUSYC image the Extended Chandra Deep Field-South. The LAEs were selected to have rest-frame equivalent widths (EWs) >20 and emission-line fluxes FLyα>2.0 × 10−17 erg cm−2 s−1, after carefully subtracting continuum contributions from photometry. median flux our is FLyα = 4.2 corresponding luminosity LLyα 1.3 1042 s−1 2.1. At this flux, ⩾90% complete. Approximately 4% original NB-selected...
We present a measurement of the spatial clustering submillimetre galaxies (SMGs) at z= 1–3. Using data from 870 μm Large APEX Bolometer Camera (LABOCA) survey Extended Chandra Deep Field-South, we employ novel technique to measure cross-correlation between SMGs and galaxies, accounting for full probability distributions photometric redshifts galaxies. From observed projected two-point function derive linear bias characteristic dark matter halo masses SMGs. detect in >4σ level. Accounting...