Phys 311,
2023
University of Nebraska - Lincoln
Phys 911,
2023
University of Nebraska - Lincoln
Phys 925,
2023
University of Nebraska - Lincoln
Phys 201,
2023
University of Nebraska - Lincoln
Phys 441/841,
2023
University of Nebraska - Lincoln
Astr 224,
2023
University of Nebraska - Lincoln
A Colorful Tribute To Staerkel Planetarium,
2023
Parkland College
A Colorful Tribute To Staerkel Planetarium, Erik Johnson
Natural Science Faculty
On October 1, 1987, the William M. Staerkel Planetarium was dedicated at Parkland College. Alongside the debut of the 50-foot wide dome, the Zeiss M1015 opto-mechanical star projector, dozens of slide projectors, and a 35-mm film projector, a stained glass art piece was installed in the lobby. The piece, called the solar window, was a gift from William and Mary Lou Staerkel in memory of their parents and a tribute to the faculty and staff of the college. The solar window was created by Arthur Stern and has brought light into the planetarium in several unique ways.
Vlti/Gravity Observations And Characterization Of The Brown Dwarf Companion Hd 72946 B,
2023
Johns Hopkins University
Vlti/Gravity Observations And Characterization Of The Brown Dwarf Companion Hd 72946 B, William O. Balmer, Laurent Pueyo, Tomas Stolker, Henrique Reggiani, A. L. Maire, S. Lacour, P. Mollière, M. Nowak, D. Sing, N. Pourré, S. Blunt, J. J. Wang, E. Rickman, J. Kammerer, Th Henning, K. Ward-Duong, R. Abuter, A. Amorim, R. Asensio-Torres, M. Benisty, J. P. Berger, H. Beust, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin
Astronomy: Faculty Publications
Tension remains between the observed and modeled properties of substellar objects, but objects in binary orbits, with known dynamical masses, can provide a way forward. HD 72946 B is a recently imaged brown dwarf companion to a nearby, solar-type star. We achieve ∼100 μas relative astrometry of HD 72946 B in the K band using VLTI/GRAVITY, unprecedented for a benchmark brown dwarf. We fit an ensemble of measurements of the orbit using orbitize! and derive a strong dynamical mass constraint M B = 69.5 ± 0.5 M Jup assuming a strong prior on the host star mass M A = …
Astr 103h,
2023
University of Nebraska - Lincoln
Astr 117,
2023
University of Nebraska - Lincoln
Phys 151,
2023
University of Nebraska - Lincoln
Phys 452/852,
2023
University of Nebraska - Lincoln
Phys 462/862,
2023
University of Nebraska - Lincoln
Phys 912,
2023
University of Nebraska - Lincoln
Phys 913,
2023
University of Nebraska - Lincoln
Phys 917,
2023
University of Nebraska - Lincoln
Rubin Observatory Lsst Transients And Variable Stars Roadmap,
2023
The University of Texas Rio Grande Valley
Rubin Observatory Lsst Transients And Variable Stars Roadmap, Kelly M. Hambleton, Federica B. Bianco, Rachel Street, Keaton Bell, David Buckley, Melissa Graham, Nina Hernitschek, Michael B. Lund, Elena Mason, Liliana Rivera Sandoval
Physics & Astronomy Faculty Publications
The Vera C. Rubin Legacy Survey of Space and Time (LSST) holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping variability time scales from minutes to a decade. To prepare to maximize the potential of the Rubin LSST data for the exploration of the transient and variable Universe, one of the four pillars of Rubin LSST science, the Transient and Variable Stars Science Collaboration, one of the eight Rubin LSST Science Collaborations, has identified research areas of interest and requirements, and paths to enable them. While our roadmap is ever-evolving, this document …
A Review On Antibacterial Activity Of Nanoparticles,
2023
The University of Texas Rio Grande Valley
A Review On Antibacterial Activity Of Nanoparticles, Badr-Edine Sadoq, Mohammed Reda Britel, Adel Bouajaj, Ramzi Maâlej, Ahmed Touhami, Marwa Abid, Hanen Douiri, Fakhita Touhami, Amal Maurady
Physics & Astronomy Faculty Publications
The increasing resistance of bacteria to antibiotic agents is a main global public health problem. The use of nanoparticles is one of the promising ways to overcome microbial resistance to antimicrobial agents. Metal nanoparticles are increasingly used to target bacterial strains. Advances in nanotechnology, in particular the ability to synthesize nanoparticles of specific size and shape, are likely to lead to the development of new antibacterial agents. The antibacterial activities of nanoparticles are largely influenced by their sizes and large surface area/mass ratio. The antibacterial mechanisms of nanoparticles are poorly understood, but the currently accepted mechanisms include oxidative stress induction, …
Search For Subsolar-Mass Black Hole Binaries In The Second Part Of Advanced Ligo’S And Advanced Virgo’S Third Observing Run,
2023
The University of Texas Rio Grande Valley
Search For Subsolar-Mass Black Hole Binaries In The Second Part Of Advanced Ligo’S And Advanced Virgo’S Third Observing Run, R. Abbott, H. Abe, F. Acernese, Teviet Creighton, Mario C. Diaz, Francisco Llamas, Soma Mukherjee, Gaukhar Nurbek, Volker Quetschke, Wenhui Wang
Physics & Astronomy Faculty Publications
We describe a search for gravitational waves from compact binaries with at least one component with mass 0.2 –1.0M⊙ and mass ratio q ≥ 0.1 in Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo data collected between 2019 November 1, 15:00 UTC and 2020 March 27, 17:00 UTC. No signals were detected. The most significant candidate has a false alarm rate of 0.2yr−1 . We estimate the sensitivity of our search over the entirety of Advanced LIGO’s and Advanced Virgo’s third observing run, and present the most stringent limits to date on the merger rate of binary black holes …
Conformational Landscapes Of Symmetrically Fluorine-Substituted Benzoic Acids I: Microwave Spectroscopic And Theoretical Studies On 3,5-Difluorobenzoic Acid,
2023
The University of Texas Rio Grande Valley
Conformational Landscapes Of Symmetrically Fluorine-Substituted Benzoic Acids I: Microwave Spectroscopic And Theoretical Studies On 3,5-Difluorobenzoic Acid, Alitza Gracia, Jingling Hong, Rebakah Arismendi, Mingfei Zhou, Weixing Li, Wei Lin
Physics & Astronomy Faculty Publications
We report our combined theoretical and spectroscopic studies on 3,5-difluorobenzoic acid. Using a chirped pulse Fourier transform microwave (CP-FTMW) spectrometer, we recorded and analyzed the rotational spectrum spanning the frequency range of 6 – 12.5 GHz. Quantum chemical calculations were employed to analyze the conformational changes and landscapes of 3,5-difluorobenzoic acid. These calculations focused on studying the potential energy surfaces along the CCCO and OCOH dihedral angles at the B3LYP/6-311G level. Based on the computational results, we identified the global minimum conformer 1 as well as the local minimum conformer 2. We discussed and interpreted the geometric structures of the …
