Search Results - "Stubbs, Christopher W."

Spectral discrimination in color blind animals via chromatic aberration and pupil shape by Stubbs, Alexander L., Stubbs, Christopher W.

“…We present a mechanism by which organisms with only a single photoreceptor, which have a monochromatic view of the world, can achieve color discrimination. An…”
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Optimizing searches for electromagnetic counterparts of gravitational wave triggers by Coughlin, Michael W, Tao, Duo, Chan, Man Leong, Chatterjee, Deep, Christensen, Nelson, Ghosh, Shaon, Greco, Giuseppe, Hu, Yiming, Kapadia, Shasvath, Rana, Javed, Salafia, Om Sharan, Stubbs, Christopher W

“…Abstract With the detection of a binary neutron star system and its corresponding electromagnetic counterparts, a new window of transient astronomy has opened…”
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All-sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample by Axelrod, Tim, Saha, Abhijit, Matheson, Thomas, Olszewski, Edward W., Bohlin, Ralph C., Calamida, Annalisa, Claver, Jenna, Deustua, Susana, Holberg, Jay B., Hubeny, Ivan, Mackenty, John W., Malanchev, Konstantin, Narayan, Gautham, Points, Sean, Rest, Armin, Sabbi, Elena, Stubbs, Christopher W.

“…Abstract Hot DA white dwarfs (DAWDs) have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are…”
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Dependence of Cosmological Constraints on Gray Photometric Zero-point Uncertainties of Supernova Surveys by Brownsberger, Sasha R., Brout, Dillon, Scolnic, Daniel, Stubbs, Christopher W., Riess, Adam G.

“…Abstract Type Ia supernova (SN) measurements of the Hubble constant, H 0 ; cosmic mass density, Ω M ; and dark energy equation-of-state parameter, w , rely on…”
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Evidence for Distinct Components of the Galactic Stellar Halo from 838 RR Lyrae Stars Discovered in the LONEOS-I Survey by Miceli, Antonino, Rest, Armin, Stubbs, Christopher W, Hawley, Suzanne L, Cook, Kem H, Magnier, Eugene A, Krisciunas, Kevin, Bowell, Edward, Koehn, Bruce

“…We present 838 ab-type RR Lyrae stars from the Lowell Observatory Near Earth Objects Survey Phase I (LONEOS-I). These objects cover 1430 deg super(2) and span…”
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Strobed imaging as a method for the determination and diagnosis of local seeing by Stubbs, Christopher W

“…ABSTRACT The image quality budget of many telescopes can have substantial contributions from local seeing, both ‘mirror’ and ‘dome’, which arise from…”
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Toward More Precise Survey Photometry for PanSTARRS and LSST: Measuring Directly the Optical Transmission Spectrum of the Atmosphere by Stubbs, Christopher W., High, F. William, George, Matthew R., DeRose, Kimberly L., Blondin, Stéphane, Tonry, John L., Chambers, Kenneth C., Granett, Benjamin R., Burke, David L., Smith, R. Chris

“…Motivated by the recognition that variation in the optical transmission of the atmosphere is probably the main limitation to the precision of ground‐based CCD…”
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The Pantheon+ Analysis: Cosmological Constraints by Brout, Dillon, Scolnic, Dan, Popovic, Brodie, Riess, Adam G., Carr, Anthony, Zuntz, Joe, Kessler, Rick, Davis, Tamara M., Hinton, Samuel, Jones, David, Kenworthy, W. D’Arcy, Peterson, Erik R., Said, Khaled, Taylor, Georgie, Ali, Noor, Armstrong, Patrick, Charvu, Pranav, Dwomoh, Arianna, Meldorf, Cole, Palmese, Antonella, Qu, Helen, Rose, Benjamin M., Sanchez, Bruno, Stubbs, Christopher W., Vincenzi, Maria, Wood, Charlotte M., Brown, Peter J., Chen, Rebecca, Chambers, Ken, Coulter, David A., Dai, Mi, Dimitriadis, Georgios, Filippenko, Alexei V., Foley, Ryan J., Jha, Saurabh W., Kelsey, Lisa, Kirshner, Robert P., Möller, Anais, Muir, Jessie, Nadathur, Seshadri, Pan, Yen-Chen, Rest, Armin, Rojas-Bravo, Cesar, Sako, Masao, Siebert, Matthew R., Smith, Mat, Stahl, Benjamin E., Wiseman, Phil

“…Abstract We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia)…”
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Using elliptical galaxy kinematics to compare the strength of gravity in cosmological regions of differing gravitational potential – a first look by Pedersen, Eske M, Stubbs, Christopher W

“…ABSTRACT Various models of modified gravity invoke ‘screening’ mechanisms that are sensitive to the value of the local gravitational potential. This could have…”
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HYPERCALIBRATION: A PAN-STARRS1-BASED RECALIBRATION OF THE SLOAN DIGITAL SKY SURVEY PHOTOMETRY by Finkbeiner, Douglas P., Schlafly, Edward F., Schlegel, David J., Padmanabhan, Nikhil, Juri, Mario, Burgett, William S., Chambers, Kenneth C., Denneau, Larry, Draper, Peter W., Flewelling, Heather, Hodapp, Klaus W., Kaiser, Nick, Magnier, E. A., Metcalfe, N., Morgan, Jeffrey S., Price, Paul A., Stubbs, Christopher W., Tonry, John L.

“…ABSTRACT We present a recalibration of the Sloan Digital Sky Survey (SDSS) photometry with new flat fields and zero points derived from Pan-STARRS1. Using…”
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Constraining Temporal Oscillations of Cosmological Parameters Using SNe Ia by Brownsberger, Sasha R., Stubbs, Christopher W., Scolnic, Daniel M.

“…The existing set of SNe Ia is now sufficient to detect oscillatory deviations from the canonical ΛCDM cosmology. We determine that the Fourier spectrum of the…”
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Windowing artefacts likely account for recent claimed detection of oscillating cosmic scale factor by Brownsberger, Sasha R, Stubbs, Christopher W, Scolnic, Daniel M

“…ABSTRACT Using the Pantheon data set of Type Ia supernovae, a recent publication (R20 in this work) reports a  2σ detection of oscillations in the expansion…”
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CfA3: 185 Type Ia Supernova Light Curves from the CfA by Hicken, Malcolm, Challis, Peter, Jha, Saurabh, Kirshner, Robert P, Matheson, Tom, Modjaz, Maryam, Rest, Armin, Michael Wood-Vasey, W, Bakos, Gaspar, Barton, Elizabeth J, Berlind, Perry, Bragg, Ann, Briceño, Cesar, Brown, Warren R, Caldwell, Nelson, Calkins, Mike, Cho, Richard, Ciupik, Larry, Contreras, Maria, Dendy, Kristi-Concannon, Dosaj, Anil, Durham, Nick, Eriksen, Kris, Esquerdo, Gil, Everett, Mark, Falco, Emilio, Fernandez, Jose, Gaba, Alejandro, Garnavich, Peter, Graves, Genevieve, Green, Paul, Groner, Ted, Hergenrother, Carl, Holman, Matthew J, Hradecky, Vit, Huchra, John, Hutchison, Bob, Jerius, Diab, Jordan, Andres, Kilgard, Roy, Krauss, Miriam, Luhman, Kevin, Macri, Lucas, Marrone, Daniel, McDowell, Jonathan, McIntosh, Daniel, McNamara, Brian, Megeath, Tom, Mochejska, Barbara, Munoz, Diego, Muzerolle, James, Naranjo, Orlando, Narayan, Gautham, Pahre, Michael, Peters, Wayne, Peterson, Dawn, Rines, Ken, Ripman, Ben, Roussanova, Anna, Schild, Rudolph, Sicilia-Aguilar, Aurora, Sokoloski, Jennifer, Smalley, Kyle, Smith, Andy, Spahr, Tim, Stanek, K. Z, Barmby, Pauline, Blondin, Stéphane, Stubbs, Christopher W, Szentgyorgyi, Andrew, Torres, Manuel A. P, Vaz, Amili, Vikhlinin, Alexey, Wang, Zhong, Westover, Mike, Woods, Deborah, Zhao, Ping

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Perfecting Our Set of Spectrophotometric Standard DA White Dwarfs by Calamida, Annalisa, Matheson, Thomas, Olszewski, Edward W., Saha, Abhijit, Axelrod, Tim, Shanahan, Clare, Holberg, Jay, Points, Sean, Narayan, Gautham, Malanchev, Konstantin, Ridden-Harper, Ryan, Gentile-Fusillo, Nicola, Raddi, Roberto, Bohlin, Ralph, Rest, Armin, Hubeny, Ivan, Deustua, Susana, Mackenty, John, Sabbi, Elena, Stubbs, Christopher W.

“…Abstract We verified for photometric stability a set of DA white dwarfs with Hubble Space Telescope magnitudes from the near-ultraviolet to the near-infrared…”
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Testing for Lorentz violation: constraints on standard-model-extension parameters via lunar laser ranging by Battat, James B R, Chandler, John F, Stubbs, Christopher W

“…We present constraints on violations of Lorentz invariance based on archival lunar laser-ranging (LLR) data. LLR measures the Earth-Moon separation by timing…”
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REPLY TO GAGNON ET AL: All color vision is more difficult in turbid water by Stubbs, Alexander L., Stubbs, Christopher W.

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Photometry and Spectroscopy of Faint Candidate Spectrophotometric Standard DA White Dwarfs by Calamida, Annalisa, Matheson, Thomas, Saha, Abhijit, Olszewski, Edward, Narayan, Gautham, Claver, Jenna, Shanahan, Clare, Holberg, Jay, Axelrod, Tim, Bohlin, Ralph, Stubbs, Christopher W., Deustua, Susana, Hubeny, Ivan, Mackenty, John, Points, Sean, Rest, Armin, Sabbi, Elena

“…We present precise photometry and spectroscopy for 23 candidate spectrophotometric standard white dwarfs. The selected stars are distributed in the Northern…”
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Measurement of Telescope Transmission Using a Collimated Beam Projector by Mondrik, Nicholas, Coughlin, Michael, Betoule, Marc, Bongard, Sébastien, Rice, Joseph P., Shaw, Ping-Shine, Stubbs, Christopher W., Woodward, John T.

“…Abstract With the increasingly large number of Type Ia supernova being detected by current-generation survey telescopes, and even more expected with the…”
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Velocity Segregation and Systematic Biases in Velocity Dispersion Estimates with the SPT-GMOS Spectroscopic Survey by Bayliss, Matthew. B., Zengo, Kyle, Ruel, Jonathan, Benson, Bradford A., Bleem, Lindsey E., Bocquet, Sebastian, Bulbul, Esra, Brodwin, Mark, Capasso, Raffaella, Chiu, I-non, McDonald, Michael, Rapetti, David, Saro, Alex, Stalder, Brian, Stark, Antony A., Strazzullo, Veronica, Stubbs, Christopher W., Zenteno, Alfredo

“…The velocity distribution of galaxies in clusters is not universal; rather, galaxies are segregated according to their spectral type and relative luminosity…”
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Toward 1% Photometry: End-to-End Calibration of Astronomical Telescopes and Detectors by Stubbs, Christopher W, Tonry, John L

“…We review the systematic uncertainties that have plagued attempts to obtain high precision and high accuracy from ground-based photometric measurements using…”
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