Publications (54)
Determination of quadrupole strengths in the gamma*p-->Delta(1232) transition at Q2= 0.20 (GeV/c)2
N. F. Sparveris, P. Achenbach, C. Ayerbe Gayoso +29
We report new precise p measurements at the peak of the resonance at $Q^2=\unit[0.20](GeV/c)^2$ performed at the Mainz Microtron (MAMI). Th…
Variations in the plane across galactic environments in PHANGS galaxies
I. Pessa, E. Schinnerer, A. Leroy +26
There exists some consensus that stellar mass surface density () and molecular gas mass surface density () are the main quantities responsible for locally set…
Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 1: The LBNF and DUNE Projects
R. Acciarri, M. A. Acero, M. Adamowski +795
This document presents the Conceptual Design Report (CDR) put forward by an international neutrino community to pursue the Deep Underground Neutrino Experiment at the Long-Baseline…
Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 2: The Physics Program for DUNE at LBNF
DUNE Collaboration, R. Acciarri, M. A. Acero +796
The Physics Program for the Deep Underground Neutrino Experiment (DUNE) at the Fermilab Long-Baseline Neutrino Facility (LBNF) is described.
Measurement of the Induced Proton Polarization P_n in the 12C(e,e'\vec{p}) Reaction
R. J. Woo, D. H. Barkhuff, W. Bertozzi +31
The first measurements of the induced proton polarization, P_n, for the 12C (e,e'\vec{p}) reaction are reported. The experiment was performed at quasifree kinematics for energy and…
A Spitzer Unbiased Ultradeep Spectroscopic Survey
B. Bertincourt, G. Helou, P. Appleton +9
We carried out an unbiased, spectroscopic survey using the low-resolution module of the infrared spectrograph (IRS) on board Spitzer targeting two 2.6 square arcminute regions in t…
The Single-Phase ProtoDUNE Technical Design Report
B. Abi, R. Acciarri, M. A. Acero +824
ProtoDUNE-SP is the single-phase DUNE Far Detector prototype that is under construction and will be operated at the CERN Neutrino Platform (NP) starting in 2018. ProtoDUNE-SP, a cr…
Star formation scaling relations at ~100 pc from PHANGS: Impact of completeness and spatial scale
I. Pessa, E. Schinnerer, F. Belfiore +31
Aims: The complexity of star formation at the physical scale of molecular clouds is not yet fully understood. We investigate the mechanisms regulating the formation of stars in dif…
Warm Molecular Gas in M51: Mapping the Excitation Temperature and Mass of H_2 with the Spitzer Infrared Spectrograph
G. Brunner, K. Sheth, L. Armus +7
We have mapped the warm molecular gas traced by the H_2 S(0) - H_2 S(5) pure rotational mid-infrared emission lines over a radial strip across the nucleus and disk of M51 (NGC 5194…
Far Infrared Spectroscopy of Normal Galaxies: Physical Conditions in the Interstellar Medium
S. Malhotra, M. J. Kaufman, D. Hollenbach +8
The most important cooling lines of the neutral interstellar medium (ISM) lie in the far-infrared (FIR). We present measurements by the Infrared Space Observatory Long Wavelength S…
H Morphologies of Star Clusters: A LEGUS study of HII region evolution timescales and stochasticity in low mass clusters
Stephen Hannon, Janice C. Lee, B. C. Whitmore +25
The morphology of HII regions around young star clusters provides insight into the timescales and physical processes that clear a cluster's natal gas. We study ~700 young clusters…
A Multi-Wavelength Study of Star Formation in 15 Local Star-Forming Galaxies
Madison V. Smith, L. van Zee, S. Salim +4
We have fit the far-ultraviolet (FUV) to mid-infrared (MIR) spectral energy distributions (SEDs) for several nearby galaxies ( 20 Mpc). Global, radial, and local photometric mea…
The DUNE Far Detector Interim Design Report Volume 1: Physics, Technology and Strategies
DUNE Collaboration, B. Abi, R. Acciarri +1092
The DUNE IDR describes the proposed physics program and technical designs of the DUNE Far Detector modules in preparation for the full TDR to be published in 2019. It is intended a…
Dust and Atomic Gas in Dwarf Irregular Galaxies of the M81 Group: The SINGS and THINGS view
F. Walter, J. Cannon, H. Roussel +22
[abridged] We present observations of the dust and atomic gas phase in seven dwarf irregular galaxies of the M81 group from the SINGS and THINGS surveys. The Spitzer observations p…
The CO-to-H2 Conversion Factor and Dust-to-Gas Ratio on Kiloparsec Scales in Nearby Galaxies
K. M. Sandstrom, A. K. Leroy, F. Walter +42
We present kiloparsec (kpc) spatial resolution maps of the CO-to-H2 conversion factor (alpha_co) and dust-to-gas ratio (DGR) in 26 nearby, star-forming galaxies. We have simultaneo…
A Dual Narrowband Survey for Hα Emitters at z=2.2: Demonstration of the Technique and Constraints on the Hα Luminosity Function
Janice C. Lee, C. Ly, L. Spitler +7
We present first results from a narrowband imaging program for intermediate redshift emission-line galaxies using the newly commissioned FourStar infrared camera at the 6.5m Magell…
Measurement of Rlt and Atl in the 4He(e,e'p)3H Reaction at pmiss of 130-300 MeV/c
K. A. Aniol, M. B. Epstein, E. Gama +41
We have measured the 4He(e,e'p)3H reaction at missing momenta of 130-300 MeV/c using the three-spectrometer facility at the Mainz microtron MAMI. Data were taken in perpendicular k…
Star-Forming or Starbursting? The Ultraviolet Conundrum
M. Boquien, D. Calzetti, R. Kennicutt +6
Compared to starburst galaxies, normal star forming galaxies have been shown to display a much larger dispersion of the dust attenuation at fixed reddening through studies of the I…
A New Measurement of the Radiative Decay Width
I. Larin, D. McNulty, E. Clinton +70
High precision measurements of the differential cross sections for photoproduction at forward angles for two nuclei, C and Pb, have been performed for inciden…
Thermal Pressure in the Cold Neutral Medium of Nearby Galaxies
R. Herrera-Camus, A. Bolatto, M. Wolfire +14
Dynamic and thermal processes regulate the structure of the multi-phase interstellar medium (ISM), and ultimately establish how galaxies evolve through star formation. Thus, to con…
Towards universal hybrid star formation rate estimators
M. Boquien, R. Kennicutt, D. Calzetti +13
To compute the SFR of galaxies from the rest-frame UV it is essential to take into account the obscuration by dust. To do so, one of the most popular methods consists in combining…
Fitting the integrated Spectral Energy Distributions of Galaxies
C. J. Walcher, B. Groves, T. Budavari +1
Fitting the spectral energy distributions (SEDs) of galaxies is an almost universally used technique that has matured significantly in the last decade. Model predictions and fittin…
A Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron
B. D. Milbrath, J. I. McIntyre, C. S. Armstrong +32
Recoil proton polarization observables were measured for both the p(,e) and d(,en reactions at two values o…
The DUNE Far Detector Interim Design Report, Volume 3: Dual-Phase Module
DUNE Collaboration, B. Abi, R. Acciarri +1092
The DUNE IDR describes the proposed physics program and technical designs of the DUNE far detector modules in preparation for the full TDR to be published in 2019. It is intended a…
The Star Formation Rate Distribution Function of the Local Universe
M. S. Bothwell, R. C. Kennicutt, B. D. Johnson +6
We present total infrared (IR) and ultraviolet (UV) luminosity functions derived from large representative samples of galaxies at z ~ 0, selected at IR and UV wavelengths from the…
Status Update on the ISAC Control System
R. Keitel, D. Bishop, D. Dale +7
Implementation and commissioning of the EPICS based control system for the ISAC radioactive beam facility was completed. The target ion source, mass separator, and low-energy beam-…
Dissecting the origin of the submillimeter emission in nearby galaxies with Herschel and LABOCA
M. Galametz, M. Albrecht, R. Kennicutt +17
We model the infrared to submillimeter spectral energy distribution of 11 nearby galaxies of the KINGFISH sample using Spitzer and Herschel data and compare model extrapolations at…
Lowest Q^2 Measurement of the gamma*p -> Delta Reaction: Probing the Pionic Contribution
S. Stave, M. O. Distler, I. Nakagawa +29
To determine nonspherical angular momentum amplitudes in hadrons at long ranges (low Q^2), data were taken for the p(\vec{e},e'p)Ï^0 reaction in the Delta region at Q^2=0.060 (GeV…
Mid- to far infrared properties of star-forming galaxies and active galactic nuclei
G. E. Magdis, D. Rigopoulou, G. Helou +19
We study the mid- to far-IR properties of a 24um-selected flux-limited sample (S24 > 5mJy) of 154 intermediate redshift (<z>~0.15), infrared luminous galaxies, drawn from the 5MUSE…
A Cryogenic Space Telescope for Far-Infrared Astrophysics: A Vision for NASA in the 2020 Decade
C. M. Bradford, P. F. Goldsmith, A. Bolatto +16
Many of the transformative processes in the Universe have taken place in regions obscured by dust, and are best studied with far-IR spectroscopy. We present the Cryogenic-Aperture…
The DUNE Far Detector Interim Design Report, Volume 2: Single-Phase Module
DUNE Collaboration, B. Abi, R. Acciarri +1092
The DUNE IDR describes the proposed physics program and technical designs of the DUNE far detector modules in preparation for the full TDR to be published in 2019. It is intended a…
Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report, Volume 4 The DUNE Detectors at LBNF
R. Acciarri, M. A. Acero, M. Adamowski +795
A description of the proposed detector(s) for DUNE at LBNF
Gaps in the cloud cover? Comparing extinction measures in spiral disks
B. W. Holwerda, M. Meyer, M. Regan +11
Dust in galaxies can be mapped by either the FIR/sub-mm emission, the optical or infrared reddening of starlight, or the extinction of a known background source. We compare two dus…
Heating and cooling of the neutral ISM in the NGC4736 circumnuclear ring
T. P. R. van der Laan, L. Armus, P. Beirao +12
The manner in which gas accretes and orbits within circumnuclear rings has direct implications for the star formation process. In particular, gas may be compressed and shocked at t…
High Precision Measurement of Compton Scattering in the 5 GeV region
P. Ambrozewicz, L. Ye, Y. Prok +94
The cross section of atomic electron Compton scattering $γ+ e \rightarrow γ^\prime + e^\prime $ was measured in the 4.40--5.475 GeV photon beam energy region by the {\em PrimEx}…
High-precision Studies of the He(e,ep) Reaction at the Quasielastic Peak
R. E. J. Florizone, W. Bertozzi, J. P. Chen +38
Precision studies of the reaction He(e,ep) using the three-spectrometer facility at the Mainz microtron MAMI are presented. All data are for quasielastic kinematics…
The Interstellar Medium of Star-forming Irregular Galaxies: The View with ISO
D. Hunter, M. Kaufman, D. Hollenbach +8
We present mid-infrared imaging and far-infrared (FIR) spectroscopy of 5 IBm galaxies observed by ISO as part of our larger study of the inter- stellar medium of galaxies. Most of…
Production of highly-polarized positrons using polarized electrons at MeV energies
D. Abbott, P. Adderley, A. Adeyemi +62
The Polarized Electrons for Polarized Positrons experiment at the injector of the Continuous Electron Beam Accelerator Facility has demonstrated for the first time the efficient tr…
The G0 Experiment: Apparatus for Parity-Violating Electron Scattering Measurements at Forward and Backward Angles
G0 Collaboration, D. Androic, D. S. Armstrong +127
In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order…
Mapping far-IR emission from the central kiloparsec of NGC 1097
K. Sandstrom, O. Krause, H. Linz +39
Using photometry of NGC 1097 from the Herschel PACS (Photodetector Array Camera and Spectrometer) instrument, we study the resolved properties of thermal dust continuum emission fr…
Laser Stabilization Controls for the ISAC Beam Polarizer
R. Nussbaumer, D. Dale, H. Hui +2
The ISAC polarized beam facility uses a Ti:Sapphire laser for producing spin-polarized beams of short-lived radioactive isotopes, initially 7Li. The laser power and spectral conten…
Imaging the cool gas, dust, star formation, and AGN in the first galaxies
C. L. Carilli, S. Myers, P. Appleton +16
When, and how, did the first galaxies and supermassive black holes (SMBH) form, and how did they reionization the Universe? First galaxy formation and cosmic reionization are among…
Total Infrared Luminosity Estimation of Resolved and Unresolved Galaxies
M. Boquien, G. Bendo, D. Calzetti +6
The total infrared (TIR) luminosity from galaxies can be used to examine both star formation and dust physics. We provide here new relations to estimate the TIR luminosity from var…
Probing the Interstellar Medium in Early type galaxies with ISO observations
S. Malhotra, D. Hollenbach, G. Helou +9
Four IRAS-detected early type galaxies were observed with ISO. With the exception of the 15 micron image of NGC1052, the mid-IR emission from NGC1052, NGC1155, NGC5866 and NGC6958…
A Measurement of the Interference Structure Function, R_LT, for the 12C(e,e'p) reaction in the Quasielastic Region
M. Holtrop, D. Jordan, T. McIlvain +34
The coincidence cross-section and the interference structure function, R_LT, were measured for the 12C(e,e'p) 11B reaction at quasielastic kinematics and central momentum transfer…
A Detailed Study of the Radio--FIR Correlation in NGC6946 with Herschel-PACS/SPIRE from KINGFISH
F. S. Tabatabaei, E. Schinnerer, E. J. Murphy +22
We derive the distribution of the synchrotron spectral index across NGC6946 and investigate the correlation between the radio continuum (synchrotron) and far-infrared (FIR) emissio…
Virtual Compton Scattering measurements in the $γ^* N\to Î$ transition
N. F. Sparveris, P. Achenbach, C. Ayerbe Gayoso +30
We report on new H measurements in the resonance at (GeV/c) carried out simultaneously with H. It is the lowest fo…
Nuclear Targets for a Precision Measurement of the Neutral Pion Radiative Width
P. Martel, E. Clinton, R. McWilliams +60
A technique is presented for precision measurements of the area densities, density * T, of approximately 5% radiation length carbon and 208Pb targets used in an experiment at Jeffe…
Energy Calibration of the JLab Bremsstrahlung Tagging System
S. Stepanyan, S. Boyarinov, H. Egiyan +10
In this report, we present the energy calibration of the Hall B bremsstrahlung tagging system at the Thomas Jefferson National Accelerator Facility. The calibration was performed u…
Measurements of the γ* p --> Î(1232) reaction at low Q2
N. Sparveris, S. Stave, P. Achenbach +29
We report new p measurements in the resonance at the low momentum transfer region utilizing the magnetic spectrometers of the A1 Collab…
The Gas Morphology of Nearby Star-Forming Galaxies
S. K. Stuber, E. Schinnerer, T. G. Williams +22
The morphology of a galaxy stems from secular and environmental processes during its evolutionary history. Thus galaxy morphologies have been a long used tool to gain insights on g…
Exploring the IMF of star clusters: a joint SLUG and LEGUS effort
G. Ashworth, M. Fumagalli, M. R. Krumholz +14
We present the implementation of a Bayesian formalism within the Stochastically Lighting Up Galaxies (SLUG) stellar population synthesis code, which is designed to investigate vari…
The Radio Spectral Energy Distribution and Star Formation Rate Calibration in Galaxies
F. S. Tabatabaei, E. Schinnerer, M. Krause +17
We study the spectral energy distribution (SED) of the radio continuum emission from the KINGFISH sample of nearby galaxies to understand the energetics and origin of this emission…
Comparing [CII], HI, and CO dynamics of nearby galaxies
W. J. G. de Blok, F. Walter, J. -D. T Smith +12
The HI and CO components of the interstellar medium (ISM) are usually used to derive the dynamical mass M_dyn of nearby galaxies. Both components become too faint to be used as a t…