F. E. Bauer
A5025718836- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Pulsars and Gravitational Waves Research
- Superconducting Materials and Applications
- Adaptive optics and wavefront sensing
- Radio Astronomy Observations and Technology
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Advancements in Semiconductor Devices and Circuit Design
- Geophysics and Gravity Measurements
- Particle accelerators and beam dynamics
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
- Medical Imaging Techniques and Applications
- Calibration and Measurement Techniques
- Electrical Fault Detection and Protection
- Cosmology and Gravitation Theories
- Astro and Planetary Science
- Radiation Detection and Scintillator Technologies
Pontificia Universidad Católica de Chile
2016-2025
Space Science Institute
2016-2025
Millennium Institute of Astrophysics
2016-2025
University of Maryland, College Park
2024
University of Plymouth
2024
Pennsylvania State University
2001-2023
École Polytechnique Fédérale de Lausanne
2023
Eureka Scientific
2023
National Radio Astronomy Observatory
2000-2021
Weatherford College
2021
The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 2012 June 13, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates band from 3 to 79 keV, extending sensitivity of far beyond ∼10 keV cutoff achieved by all previous satellites. inherently low background associated with concentrating light enables probe hard sky a more than 100-fold improvement over collimated or coded mask instruments that have operated this bandpass. Using its unprecedented...
This special issue of the Astrophysical Journal Letters is dedicated to presenting initial results from Great Observatories Origins Deep Survey (GOODS) that are primarily, but not exclusively, based on multiband imaging data obtained with Hubble Space Telescope and Advanced Camera for Surveys (ACS). The survey covers roughly 320 arcmin2 in ACS F435W, F606W, F814W, F850LP bands, divided into two well-studied fields. Existing deep observations Chandra X-Ray Observatory ground-based facilities...
Examining a sample of massive galaxies at 1.4<z<2.5 with K_{Vega}<22 from the Great Observatories Origins Deep Survey, we compare photometry Spitzer mid- and far-IR, to submillimeter, radio rest-frame ultraviolet wavelengths, test agreement between different tracers star formation rates (SFRs) explore implications for galaxy assembly. For z~2 moderate luminosities(L_{8um}<10^{11}L_sun), find that SFR can be estimated consistently multiwavelength data based on local luminosity correlations....
We present catalogs for the ~2 Ms Chandra Deep Field-North, currently deepest X-ray observation of Universe in 0.5-8.0 keV band. Five hundred and three (503) sources are detected over an ~448 sq.arcmin area up to seven bands; 20 these lie Hubble Field-North. Source positions determined using matched-filter centroiding techniques; median positional uncertainty is ~0.3 arcsecs. The colors indicate a broad variety source types, although absorbed AGNs (including some possible Compton-thick...
[abridged] We present point-source catalogs for the 4Ms Chandra Deep Field-South (CDF-S), which is deepest survey to date and covers an area of 464.5 arcmin^2. provide a main source catalog, contains 740 X-ray point sources that are detected with wavdetect at false-positive probability threshold 1E-5 also satisfy binomial-probability source-selection criterion P<0.004; this approach designed maximize number reliable detected. A total 300 main-catalog new compared previous 2Ms CDF-S sources....
We present X-ray source catalogs for the $\approx7$ Ms exposure of Chandra Deep Field-South (CDF-S), which covers a total area 484.2 arcmin$^2$. Utilizing WAVDETECT initial detection and ACIS Extract photometric extraction significance assessment, we create main catalog containing 1008 sources that are detected in up to three bands: 0.5-7.0 keV, 0.5-2.0 2-7 keV. A supplementary is also provided including 47 lower-significance have bright ($K_s\le23$) near-infrared counterparts. identify...
Deep SCUBA surveys have uncovered a large population of massive submm galaxies (SMGs) at z>~1. Although it is generally believed that these host intense star-formation activity, there growing evidence substantial fraction also harbor an AGN. We present here possibly the strongest for this viewpoint to date: combination ultra-deep X-ray observations (the 2 Ms CDF-N) and deep Keck spectroscopic data. find majority (~75%) spectroscopically identified SMGs AGN activity; other ~25% properties...
During the last ~50 years, population of black hole candidates in X-ray binaries has increased considerably with 59 Galactic objects detected transient low-mass binaries, plus a few persistent systems (including ~5 extragalactic binaries). We collect near-infrared, optical and information spread over hundreds references order to study holes transients as whole. present most updated catalogue transients, which contains X-ray, near-infrared observations together their astrometric dynamical...
We present new Chandra observations that complete a sample of seventeen (17) luminous infrared galaxies (LIRGs) with D < 60 Mpc and low Galactic column densities N_H 5 X 10^20 cm^-2. The LIRGs in our have total (8-1000um) luminosities the range L_IR ~ (1-8) 10^11 L_sol. high-resolution imaging X-ray spectral information from allow us to measure separately contributions active galactic nuclei (AGNs) normal galaxy processes (e.g., binaries hot gas). utilized plus UV estimate star-formation...
ABSTRACT We make use of deep 1.2 mm continuum observations (12.7 μ Jy beam −1 rms) a 1 arcmin 2 region in the Hubble Ultra Deep Field to probe dust-enshrouded star formation from 330 Lyman-break galaxies spanning redshift range z = 2–10 (to ∼2–3 M ⊙ yr at σ over entire range). Given depth and area ASPECS, we would expect tentatively detect 35 galaxies, extrapolating Meurer ∼ 0 IRX– β relation ≥ (assuming dust temperature T d K). However, only six tentative detections are found ≳ with just...
Abstract We report on the detailed analysis of a gravitationally lensed Y-band dropout, A2744_YD4, selected from deep Hubble Space Telescope imaging in Frontier Field cluster Abell 2744. Band 7 observations with Atacama Large Millimeter/submillimeter Array (ALMA) indicate proximate detection significant 1 mm continuum flux suggesting presence dust for star-forming galaxy photometric redshift . Deep X-SHOOTER spectra confirms high-redshift identity A2744_YD4 via Ly α emission at z = 8.38. The...
(Abridged) We study relationships between the SFR and nuclear properties of X-ray selected AGNs out to z=2.5, using far-IR data in three extragalactic deep fields as part PACS Evolutionary Probe (PEP) program. Guided by studies intrinsic infra-red AGN SEDs, we show that majority FIR emission is produced cold dust heated star-formation. uncover characteristic redshift-dependent trends mean luminosity (L_fir) accretion (L_agn) AGNs. At low luminosities, are uncorrelated at all redshifts,...
As members of the instrument team for Advanced CCD Imaging Spectrometer (ACIS) on NASA's Chandra X-ray Observatory and as General Observers, we have developed a wide variety data analysis methods that believe are useful to community, constructed significant body publicly-available software (the ACIS Extract package) addressing important science tasks. This paper seeks describe these two purposes: document work performed in our own projects, help other observers judge whether may be their...
Superluminous supernovae (SLSNe) are very bright explosions that were only discovered recently and show a preference for occurring in faint dwarf galaxies. Understanding why stellar evolution yields different types of these environments is fundamental order to both uncover the elusive progenitors SLSNe study star formation In this paper, we present first results our project SUperluminous Supernova Host galaxIES, focusing on sample which have obtained spectroscopy. We SLSNe-I SLSNe-R...
The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. We describe the data reduction strategy and products which are publicly available through ESO archive Data Release 1 (SSDR1). PESSTO uses New Technology Telescope with EFOSC2 SOFI to provide optical NIR spectroscopy imaging. target supernovae transients brighter than 20.5mag for classification. Science targets then selected follow-up based on...
Mergers of galaxies are thought to cause significant gas inflows the inner parsecs, which can activate rapid accretion on supermassive black holes (SMBHs), giving rise active galactic nuclei (AGN). During a fraction this process, SMBHs predicted be enshrouded by and dust. Studying 52 in infrared-selected local luminous ultraluminous infrared different merger stages hard X-ray band, where radiation is less affected absorption, we find that amount material around increases during last phases...
An extremely deep X-ray survey (≈1 Ms) of the Hubble Deep Field North (HDF-N) and its environs (≈450 arcmin2) has been performed with Advanced CCD Imaging Spectrometer on board Chandra X-Ray Observatory. This is one two deepest surveys ever performed; for point sources near aim point, it reaches 0.5–2.0 2–8 keV flux limits ≈3 × 10-17 ≈2 10-16 ergs cm-2 s-1, respectively. Here we provide source catalogs, along details observations, data reduction, technical analysis. Observing conditions,...
We investigate the properties of massive galaxies at z=1-3.5 using HST observations, ground-based near-IR imaging, and Spitzer Space Telescope observations 3-24 micron. identify 153 distant red (DRGs) with J-K > 2.3 mag (Vega) in southern GOODS field. This sample is approximately complete stellar mass for passively evolving above 10^11 solar masses z < 3. The identified by this selection are roughly split between objects whose optical rest-frame light dominated evolved stars combined...
We present an optical and NIR catalog for the X-ray sources in 2 Ms Chandra observation of Hubble Deep Field-North region. have high-quality multicolor images all 503 point reliable spectroscopic redshifts 284. spectroscopically identify six z>1 type II quasars. Our completeness R<24 is 87%. The redshift distribution shows two broad spikes that clearly grown over those originally seen 1 exposure. identified extragalactic already comprise 75% measured 2-8 keV light. Redshift slices...
Approximately 20%-30% of 1.4 ≲ z 2.5 galaxies with KVega < 22 detected Spitzer MIPS at 24 μm show excess mid-IR emission relative to that expected based on the rates star formation measured from other multiwavelength data. These also display some near-IR in IRAC data, an SED peaking longward 1.6 rest frame, indicating presence warm dust usually absent star-forming galaxies. Stacking Chandra data for yields a significant hard X-ray detection rest-frame energies >6.2 keV. The stacked spectrum...
We investigate the X-ray number counts in 1–2 Ms Chandra Deep Fields (CDFs) to determine contributions of faint source populations extragalactic background (XRB). sources were separated into active galactic nuclei (AGNs), star-forming galaxies, and Galactic stars primarily on basis their X-ray–to–optical flux ratios, optical spectral classifications, spectra, intrinsic luminosities. Number count slopes normalizations below 2 × 10-15 ergs cm-2 s-1 calculated each band for all types assuming a...
We present point-source catalogs for the ~2 Ms exposure of Chandra Deep Field-South (CDF-S); this is one two most-sensitive X-ray surveys ever performed. The survey covers an area ~436 arcmin^2 and reaches on-axis sensitivity limits ~1.9x10^{-17} ~1.3x10^{-16} ergs/cm^2/s 0.5-2.0 2-8 keV bands, respectively. Four hundred sixty-two point sources are detected in at least three bands that were searched; 135 these new compared to previous ~1 CDF-S detections. Source positions determined using...