Search Results - "Challis, Peter"

A 2.4% DETERMINATION OF THE LOCAL VALUE OF THE HUBBLE CONSTANT by Riess, Adam G, Macri, Lucas M, Hoffmann, Samantha L, Scolnic, Dan, Casertano, Stefano, Filippenko, Alexei V, Tucker, Brad E, Reid, Mark J, Jones, David O, Silverman, Jeffrey M, Chornock, Ryan, Challis, Peter, Yuan, Wenlong, Brown, Peter J, Foley, Ryan J

“…ABSTRACT We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant from…”
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Type Ia Supernovae Are Excellent Standard Candles in the Near-infrared by Avelino, Arturo, Friedman, Andrew S., Mandel, Kaisey S., Jones, David O., Challis, Peter J., Kirshner, Robert P.

“…We analyze a set of 89 type Ia supernovae (SNe Ia) that have both optical and near-infrared (NIR) photometry to derive distances and construct low-redshift (z…”
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High-density circumstellar interaction in the luminous type IIn SN 2010jl: The first 1100 days by Fransson, Claes, Ergon, Mattias, Challis, Peter J., Chevalier, Roger A., France, Kevin, Kirshner, Robert P., Marion, G. H., Milisavljevic, Dan, Smith, Nathan, Bufano, Filomena, Friedman, Andrew S., Kangas, Tuomas, Larsson, Josefin, Mattila, Seppo, Benetti, Stefano, Chornock, Ryan, Czekala, Ian, Soderberg, Alicia, Sollerman, Jesper

“…Hubble Space Telescope and ground-based observations of the Type IIn supernova (SN) 2010jl are analyzed, including photometry and spectroscopy in the…”
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Using rest-frame optical and NIR data from the RAISIN survey to explore the redshift evolution of dust laws in SN Ia host galaxies by Thorp, Stephen, Mandel, Kaisey S, Jones, David O, Kirshner, Robert P, Challis, Peter M

“…ABSTRACT We use rest-frame optical and near-infrared (NIR) observations of 42 Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project at low-z and 37…”
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Type Ia Supernova Distances at Redshift >1.5 from the Hubble Space Telescope Multi-cycle Treasury Programs: The Early Expansion Rate by Riess, Adam G., Rodney, Steven A., Scolnic, Daniel M., Shafer, Daniel L., Strolger, Louis-Gregory, Ferguson, Henry C., Postman, Marc, Graur, Or, Maoz, Dan, Jha, Saurabh W., Mobasher, Bahram, Casertano, Stefano, Hayden, Brian, Molino, Alberto, Hjorth, Jens, Garnavich, Peter M., Jones, David O., Kirshner, Robert P., Koekemoer, Anton M., Grogin, Norman A., Brammer, Gabriel, Hemmati, Shoubaneh, Dickinson, Mark, Challis, Peter M., Wolff, Schuyler, Clubb, Kelsey I., Filippenko, Alexei V., Nayyeri, Hooshang, Vivian, U, Koo, David C., Faber, Sandra M., Kocevski, Dale, Bradley, Larry, Coe, Dan

“…We present an analysis of 15 Type Ia supernovae (SNe Ia) at redshift (9 at ) recently discovered in the CANDELS and CLASH Multi-Cycle Treasury programs using…”
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Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves by Hicken, Malcolm, Wood-Vasey, W. Michael, Blondin, Stephane, Challis, Peter, Jha, Saurabh, Kelly, Patrick L, Rest, Armin, Kirshner, Robert P

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SN 2012cg: EVIDENCE FOR INTERACTION BETWEEN A NORMAL SN Ia AND A NON-DEGENERATE BINARY COMPANION by Marion, G. H., Brown, Peter J., Vinkó, Jozsef, Silverman, Jeffrey M., Sand, David J., Challis, Peter, Kirshner, Robert P., Wheeler, J. Craig, Berlind, Perry, Brown, Warren R., Calkins, Michael L., Camacho, Yssavo, Dhungana, Govinda, Foley, Ryan J., Friedman, Andrew S., Graham, Melissa L., Howell, D. Andrew, Hsiao, Eric Y., Irwin, Jonathan M., Jha, Saurabh W., Kehoe, Robert, Macri, Lucas M., Maeda, Keiichi, Mandel, Kaisey, McCully, Curtis, Pandya, Viraj, Rines, Kenneth J., Wilhelmy, Steven, Zheng, Weikang

“…ABSTRACT We report evidence for excess blue light from the Type Ia supernova (Sn Ia) SN 2012cg at 15 and 16 days before maximum B-band brightness. The emission…”
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New hubble space telescope discoveries of type la supernovae at z ≥ 1 Narrowing constraints on the early behavior of dark energy by RIESS, Adam G, STROLGER, Louis-Gregory, TONRY, John, FOLEY, Ryan, KIRSHNER, Robert P, DICKINSON, Mark, MACDONALD, Emily, ELSENSTEIN, Daniel, LIVID, Mario, YOUNGER, Josh, CHUN XU, DAHLEN, Tomas, CASERTANO, Stefano, STERN, Daniel, FERGUSON, Henry C, MOBASHER, Bahram, GOLD, Ben, CHALLIS, Peter J, FILIPPENKO, Alexei V, JHA, Saurabh, LI, Weidong

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Hubble Space Telescope Images of SN 1987A: Evolution of the Ejecta and the Equatorial Ring from 2009 to 2022 by Rosu, Sophie, Larsson, Josefin, Fransson, Claes, Challis, Peter, Kangas, Tuomas, Kirshner, Robert P., Lawrence, Stephen S., Lundqvist, Peter, Matsuura, Mikako, Sollerman, Jesper, Sonneborn, George, Tenhu, Linda

“…Abstract Supernova (SN) 1987A offers a unique opportunity to study how a spatially resolved SN evolves into a young SN remnant. We present and analyze Hubble…”
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LATE-TIME OPTICAL EMISSION FROM CORE-COLLAPSE SUPERNOVAE by MILISAVLJEVIC, Dan, FESEN, Robert A, CHEVALIER, Roger A, KIRSHNER, Robert P, CHALLIS, Peter, TURATTO, Massimo

“…Ground-based optical spectra and Hubble Space Telescope images of 10 core-collapse supernovae (CCSNe) obtained several years to decades after outburst are…”
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New Hubble Space Telescope Discoveries of Type Ia Supernovae at z ≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy by Riess, Adam G, Strolger, Louis-Gregory, Casertano, Stefano, Ferguson, Henry C, Mobasher, Bahram, Gold, Ben, Challis, Peter J, Filippenko, Alexei V, Jha, Saurabh, Li, Weidong, Tonry, John, Foley, Ryan, Kirshner, Robert P, Dickinson, Mark, MacDonald, Emily, Eisenstein, Daniel, Livio, Mario, Younger, Josh, Xu, Chun, Dahlén, Tomas, Stern, Daniel

“…We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over…”
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The Diversity of Massive Star Outbursts. I. Observations of SN2009ip, UGC 2773 OT2009-1, and Their Progenitors by Foley, Ryan J, Berger, Edo, Fox, Ori, Levesque, Emily M, Challis, Peter J, Ivans, Inese I, Rhoads, James E, Soderberg, Alicia M

“…Despite both being outbursts of luminous blue variables (LBVs), SN 2009ip and UGC 2773 OT2009-1 have very different progenitors, spectra, circumstellar…”
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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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iPTF15eqv: Multiwavelength Exposé of a Peculiar Calcium-rich Transient by Milisavljevic, Dan, Patnaude, Daniel J., Raymond, John C., Drout, Maria R., Margutti, Raffaella, Kamble, Atish, Chornock, Ryan, Guillochon, James, Sanders, Nathan E., Parrent, Jerod T., Lovisari, Lorenzo, Chilingarian, Igor V., Challis, Peter, Kirshner, Robert P., Penny, Matthew T., Itagaki, Koichi, Eldridge, J. J., Moriya, Takashi J.

“…The progenitor systems of the class of "Ca-rich transients" is a key open issue in time domain astrophysics. These intriguing objects exhibit unusually strong…”
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Doublets and Double Peaks: Late-Time [O I] λλ6300, 6364 Line Profiles of Stripped-Envelope, Core-Collapse Supernovae by Milisavljevic, Dan, Fesen, Robert A, Gerardy, Christopher L, Kirshner, Robert P, Challis, Peter

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THE DISCOVERY OF THE MOST DISTANT KNOWN TYPE Ia SUPERNOVA AT REDSHIFT 1.914 by Jones, David O, Rodney, Steven A, Riess, Adam G, Mobasher, Bahram, Dahlen, Tomas, McCully, Curtis, Frederiksen, Teddy F, Casertano, Stefano, Hjorth, Jens, Keeton, Charles R

“…We present the discovery of a Type Ia supernova (SN) at redshift z = 1.914 from the CANDELS multi-cycle treasury program on the Hubble Space Telescope (HST)…”
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Type Ia Supernovae Are Good Standard Candles in the Near Infrared: Evidence from PAIRITEL by Wood-Vasey, W. Michael, Friedman, Andrew S, Bloom, Joshua S, Hicken, Malcolm, Modjaz, Maryam, Kirshner, Robert P, Starr, Dan L, Blake, Cullen H, Falco, Emilio E, Szentgyorgyi, Andrew H, Challis, Peter, Blondin, Stéphane, Mandel, Kaisey S, Rest, Armin

“…We have obtained 1087 NIR measurements of 21 SNe Ia using PAIRITEL, nearly doubling the number of well-sampled NIR SN Ia light curves. These data strengthen…”
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LATE SPECTRAL EVOLUTION OF THE EJECTA AND REVERSE SHOCK IN SN 1987A by Fransson, Claes, Larsson, Josefin, SPYROMILIO, JASON, Chevalier, Roger, GRONINGSSON, PER, JERKSTRAND, ANDERS, Leibundgut, Bruno, McCray, Richard, Challis, Peter, Kirshner, Robert P, Kjaer, Karina, Lundqvist, Peter, Sollerman, Jesper

“…We present observations with the Very Large Telescope and Hubble Space Telescope (HST) of the broad emission lines from the inner ejecta and reverse shock of…”
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Near-ultraviolet Properties of a Large Sample of Type Ia Supernovae as Observed with the Swift UVOT by Milne, Peter A, Brown, Peter J, Roming, Peter W. A, Holland, Stephen T, Immler, Stefan, Filippenko, Alexei V, Ganeshalingam, Mohan, Li, Weidong, Stritzinger, Maximilian, Phillips, Mark M, Hicken, Malcolm, Kirshner, Robert P, Challis, Peter J, Mazzali, Paolo, Schmidt, Brian P, Bufano, Filomena, Gehrels, Neil, Vanden Berk, Daniel

“…We present ultraviolet (UV) and optical photometry of 26 Type Ia supernovae (SNe Ia) observed from 2005 March to 2008 March with the NASA Swift Ultraviolet and…”
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Five Years of Mid-infrared Evolution of the Remnant of SN 1987A: The Encounter Between the Blast Wave and the Dusty Equatorial Ring by Dwek, Eli, Arendt, Richard G, Bouchet, Patrice, Burrows, David N, Challis, Peter, Danziger, I. John, De Buizer, James M, Gehrz, Robert D, Park, Sangwook, Polomski, Elisha F, Slavin, Jonathan D, Woodward, Charles E

“…We have used the Spitzer satellite to monitor the mid-IR evolution of SN 1987A over a five year period spanning the epochs between days {approx}6000 and 8000…”
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