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Your search keyword '"DePoy, Darren L."' showing total 3 results
Start Over Author "DePoy, Darren L." Topic astrophysics
3 results on '"DePoy, Darren L."'

1. First-Year Spectroscopy for the SDSS-II Supernova Survey

Author

Zheng, Chen, Romani, Roger W., Sako, Masao, Marriner, John, Bassett, Bruce, Becker, Andrew, Choi, Changsu, Cinabro, David, DeJongh, Fritz, Depoy, Darren L., Dilday, Ben, Doi, Mamoru, Frieman, Joshua A., Garnavich, Peter M., Hogan, Craig J., Holtzman, Jon, Im, Myungshin, Jha, Saurabh, Kessler, Richard, Konishi, Kohki, Lampeitl, Hubert, Marshall, Jennifer L., McGinnis, David, Miknaitis, Gajus, Nichol, Robert C., Prieto, Jose Luis, Riess, Adam G., Richmond, Michael W., Schneider, Donald P., Smith, Mathew, Takanashi, Naohiro, Tokita, Kouichi, van der Heyden, Kurt, Yasuda, Naoki, Assef, Roberto J., Barentine, John, Bender, Ralf, Blandford, Roger D., Bremer, Malcolm, Brewington, Howard, Collins, Chris A., Crotts, Arlin, Dembicky, Jack, Eastman, Jason, Edge, Alastair, Elson, Ed, Eyler, Michael E., Filippenko, Alexei V., Foley, Ryan J., Frank, Stephan, Goobar, Ariel, Harvanek, Michael, Hopp, Ulrich, Ihara, Yutaka, Kahn, Steven, Ketzeback, William, Kleinman, Scott J., Kollatschny, Wolfram, Krzesiński, Jurek, Leloudas, Giorgos, Long, Daniel C., Lucey, John, Malanushenko, Elena, Malanushenko, Viktor, McMillan, Russet J., Morgan, Christopher W., Morokuma, Tomoki, Nitta, Atsuko, Ostman, Linda, Pan, Kaike, Romer, A. Kathy, Saurage, Gabrelle, Schlesinger, Katie, Snedden, Stephanie A., Sollerman, Jesper, Stritzinger, Maximilian, Watson, Linda C., Watters, Shannon, Wheeler, J. Craig, and York, Donald

Subjects
Astrophysics
Abstract

This paper presents spectroscopy of supernovae discovered in the first season of the Sloan Digital Sky Survey-II Supernova Survey. This program searches for and measures multi-band light curves of supernovae in the redshift range z = 0.05 - 0.4, complementing existing surveys at lower and higher redshifts. Our goal is to better characterize the supernova population, with a particular focus on SNe Ia, improving their utility as cosmological distance indicators and as probes of dark energy. Our supernova spectroscopy program features rapid-response observations using telescopes of a range of apertures, and provides confirmation of the supernova and host-galaxy types as well as precise redshifts. We describe here the target identification and prioritization, data reduction, redshift measurement, and classification of 129 SNe Ia, 16 spectroscopically probable SNe Ia, 7 SNe Ib/c, and 11 SNe II from the first season. We also describe our efforts to measure and remove the substantial host galaxy contamination existing in the majority of our SN spectra., Comment: Accepted for publication in The Astronomical Journal(47pages, 9 figures)

Published
2008
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2. Optical and Infrared Photometry of the Nearby Type Ia Supernovae 1999ee, 2000bh, 2000ca, and 2001ba

Author

Krisciunas, Kevin, Phillips, Mark M., Suntzeff, Nicholas B., Persson, S. E., Hamuy, Mario, Antezana, Roberto, Candia, Pablo, Clocchiatti, Alejandro, DePoy, Darren L., Germany, Lisa M., Gonzalez, Luis, Gonzalez, Sergio, Krzeminski, Wojtek, Maza, Jose, Nugent, Peter E., Qiu, Yulei, Rest, Armin, Roth, Miguel, Stritzinger, Maximilian, Strolger, L. -G., Thompson, Ian, Williams, T. B., and Wischnjewsky, Marina

Subjects
Astrophysics
Abstract

We present near infrared photometry of the Type Ia supernova 1999ee; also, optical and infrared photometry of the Type Ia SNe 2000bh, 2000ca, and 2001ba. For SNe 1999ee and 2000bh we present the first-ever SN photometry at 1.035 microns (the Y-band). We present K-corrections which transform the infrared photometry in the observer's frame to the supernova rest frame. Using our infrared K-corrections and stretch factors derived from optical photometry, we construct JHK templates which can be used to determine the apparent magnitudes at maximum if one has some data in the window -12 to +10 d with respect to T(B_max). Following up previous work on the uniformity of V minus IR loci of Type Ia supernovae of mid-range decline rates, we present unreddened loci for slow decliners. We also discuss evidence for a continuous change of color at a given epoch as a function of decline rate., Comment: 53 pages, 14 figures, to be published in the March 2004 issue of the Astronomical Journal

Published
2003
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3. Redshift distributions of galaxies in the Dark Energy Survey Science Verification shear catalogue and implications for weak lensing

Author

Bonnett, Christopher, Troxel, Michael, Hartley, William, Amara, Adam, Leistedt, Boris, Becker, Matthew R., Bernstein, Gary M., Bridle, Sarah Louise, Bruderer, Claudio, Busha, M. T., Carrasco Kind, Matías, Childress, Michael, Castander Serentill, Francisco Javier, Chang, Chihway, Crocce, Martin, Davis, Tamara M., Eifler, Tim, Frieman, Joshua A., Gangkofner, C., Gaztañaga, Enrique, Glazebrook, Karl, Gruen, Daniel, Kacprzak, Tomasz, King, Anthea L., Kwan, Juliana, Lahav, Ofer, Lewis, Geraint F., Lidman, Chris, Lin, H., MacCrann, Niall, Miquel, Ramon, O'Neill, C. R., Palmese, A., Peiris, Hiranya V., Refregier, Alexandre, Rozo, Eduardo, Rykoff, Eli, Sadeh, Iftach, Sánchez Alonso, Carles, Sheldon, Erin, Uddin, Syed, Wechsler, Risa H., Zuntz, J., Abbott, Timothy M. C., Abdalla, Filipe B., Allam, Sahar S., Armstrong, Robert, Banerji, M., Bauer, Anne Hollister, Benoit-Lévy, Aurélien, Bertin, Emmanuel, Brooks, D., Buckley-Geer, Elizabeth, Burke, David Lyle, Capozzi, Diego, Carnero Rosell, Aurelio, Carretero Palacios, Jorge, Cunha, Carlos Eduardo, D'Andrea, Christopher B., Costa, Luiz N. da, DePoy, Darren L., Desai, S., Diehl, H. Thomas, Dietrich, Jörg P., Doel, Peter, Fausti Neto, Angelo, Fernandez, Enrique, Flaugher, Brenna, Fosalba Vela, Pablo, Gerdes, David W., Gruendl, Robert A., Honscheid, K., Jain, Bhuvnesh, James, David J., Jarvis, Michael, Kim, A. G., Kuehn, Kyler, Kuropatkin, Nikolay P., Li, T. S., Lima, Marcos Vinicius Borges Teixeira, Maia, Marcio Antonio Geimba, March, Marisa Cristina, Marshall, Jennifer L., Martini, Paul, Melchior, Peter M., Miller, Christopher J., Neilsen, Eric H., Nichol, Robert C., Nord, Brian Dennis, Ogando, Ricardo L.C., Plazas Malagón, Andrés Alejandro, Reil, Kevin, Romer, Anita K., Roodman, Aaron, Sako, Masao, Sanchez-Alvaro, Eusebio, Santiago, Basilio Xavier, Smith, Robert Christopher, Soares-Santos, Marcelle, Sobreira, Flávia, Suchyta, Eric, Swanson, Molly E. C., Tarle, Gregory, Thaler, Jon J., Thomas, D., Vikram, Vinu, Walker, Alistair, and DES Collaboration

Subjects
Lentes gravitacionais, DATA RELEASE, SURVEY REQUIREMENTS, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, SHAPE MEASUREMENT, 01 natural sciences, Cosmology, Physics, Particles & Fields, PRECISION COSMOLOGY, LARGE-SCALE STRUCTURE, 0103 physical sciences, STAR-FORMING GALAXIES, PHOTO-Z PERFORMANCE, Deslocamento para o vermelho, Galáxias, PHOTOMETRIC REDSHIFTS, 010303 astronomy & astrophysics, Weak gravitational lensing, Astrophysics::Galaxy Astrophysics, QB, Photometric redshift, Physics, Science & Technology, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Sigma, VLT DEEP SURVEY, Redshift survey, Galaxy, Redshift, Fotometria astronômica, Physical Sciences, astro-ph.CO, Dark energy, NEURAL-NETWORKS
Abstract

We present photometric redshift estimates for galaxies used in the weak lensing analysis of the Dark Energy Survey Science Verification (DES SV) data. Four model-or machine learning-based photometric redshift methods-ANNZ2, BPZ calibrated against BCC-Ufig simulations, SKYNET, and TPZ-are analyzed. For training, calibration, and testing of these methods, we construct a catalogue of spectroscopically confirmed galaxies matched against DES SV data. The performance of the methods is evaluated against the matched spectroscopic catalogue, focusing on metrics relevant for weak lensing analyses, with additional validation against COSMOS photo-z's. From the galaxies in the DES SV shear catalogue, which have mean redshift 0.72 +/- 0.01 over the range 0.3 < z < 1.3, we construct three tomographic bins with means of z = {0.45;0.67;1.00}. These bins each have systematic uncertainties delta z

Published
2016

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