Search Results - "Siebert, Matthew R"

The Pantheon+ Analysis: The Full Data Set and Light-curve Release by Scolnic, Dan, Brout, Dillon, Carr, Anthony, Riess, Adam G., Davis, Tamara M., Dwomoh, Arianna, Jones, David O., Ali, Noor, Charvu, Pranav, Chen, Rebecca, Peterson, Erik R., Popovic, Brodie, Rose, Benjamin M., Wood, Charlotte M., Brown, Peter J., Chambers, Ken, Coulter, David A., Dettman, Kyle G., Dimitriadis, Georgios, Filippenko, Alexei V., Foley, Ryan J., Jha, Saurabh W., Kilpatrick, Charles D., Kirshner, Robert P., Pan, Yen-Chen, Rest, Armin, Rojas-Bravo, Cesar, Siebert, Matthew R., Stahl, Benjamin E., Zheng, WeiKang

“…Abstract Here we present 1701 light curves of 1550 unique, spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological…”
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Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-degenerate Double-detonation Type Ia Supernovae by Shen, Ken J., Boubert, Douglas, Gänsicke, Boris T., Jha, Saurabh W., Andrews, Jennifer E., Chomiuk, Laura, Foley, Ryan J., Fraser, Morgan, Gromadzki, Mariusz, Guillochon, James, Kotze, Marissa M., Maguire, Kate, Siebert, Matthew R., Smith, Nathan, Strader, Jay, Badenes, Carles, Kerzendorf, Wolfgang E., Koester, Detlev, Kromer, Markus, Miles, Broxton, Pakmor, Rüdiger, Schwab, Josiah, Toloza, Odette, Toonen, Silvia, Townsley, Dean M., Williams, Brian J.

“…Double detonations in double white dwarf (WD) binaries undergoing unstable mass transfer have emerged in recent years as one of the most promising Type Ia…”
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Atomistic Details of Methyl Linoleate Pyrolysis: Direct Molecular Dynamics Simulation of Converting Biodiesel to Petroleum Products by Bakker, Michael J., Siebert, Matthew R.

“…Dependence on petroleum and petrochemical products is unsustainable; it is both a finite resource and an environmental hazard. Biodiesel has many attractive…”
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On the progenitor of the Type IIb supernova 2016gkg by Kilpatrick, Charles D, Foley, Ryan J, Abramson, Louis E, Pan, Yen-Chen, Lu, Cicero-Xinyu, Williams, Peter, Treu, Tommaso, Siebert, Matthew R, Fassnacht, Christopher D, Max, Claire E

“…We present a detection in pre-explosion Hubble Space Telescope(HST) imaging of a point source consistent with being the progenitor star of the Type IIb…”
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Updated Photometry of the Yellow Supergiant Progenitor and Late-time Observations of the Type IIb Supernova SN 2016gkg by Kilpatrick, Charles D., Coulter, David A., Foley, Ryan J., Piro, Anthony L., Rest, Armin, Rojas-Bravo, César, Siebert, Matthew R.

“…Abstract We present Hubble Space Telescope (HST) observations of the Type IIb supernova (SN) SN 2016gkg at 652, 1698, and 1795 days from explosion with the…”
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A Carbon/Oxygen-dominated Atmosphere Days after Explosion for the “Super-Chandrasekhar” Type Ia SN 2020esm by Dimitriadis, Georgios, Foley, Ryan J., Arendse, Nikki, Coulter, David A., Jacobson-Galán, Wynn V., Siebert, Matthew R., Izzo, Luca, Jones, David O., Kilpatrick, Charles D., Pan, Yen-Chen, Taggart, Kirsty, Auchettl, Katie, Gall, Christa, Hjorth, Jens, Kasen, Daniel, Piro, Anthony L., Raimundo, Sandra I., Ramirez-Ruiz, Enrico, Rest, Armin, Swift, Jonathan J., Woosley, Stan E.

“…Abstract Seeing pristine material from the donor star in a type Ia supernova (SN Ia) explosion can reveal the nature of the binary system. In this paper, we…”
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An Asymmetric Double-degenerate Type Ia Supernova Explosion with a Surviving Companion Star by Siebert, Matthew R., Foley, Ryan J., Zenati, Yossef, Dimitriadis, Georgios, Schmidt, Eva, Yang, Grace, Davis, Kyle W., Taggart, Kirsty, Rojas-Bravo, César

“…Abstract We present nebular spectroscopy of SN 2020hvf, a Type Ia supernova (SN Ia) with an early bump in its light curve. SN 2020hvf shares many spectroscopic…”
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Late-time Hubble Space Telescope Observations of AT 2018cow. I. Further Constraints on the Fading Prompt Emission and Thermal Properties 50–60 days Post-discovery by Chen, Yuyang, Drout, Maria R., Piro, Anthony L., Kilpatrick, Charles D., Foley, Ryan J., Rojas-Bravo, César, Taggart, Kirsty, Siebert, Matthew R., Magee, M. R.

“…Abstract The exact nature of the luminous fast blue optical transient AT 2018cow is still debated. In this first of a two-paper series, we present a detailed…”
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Supernova 2020wnt: An Atypical Superluminous Supernova with a Hidden Central Engine by Tinyanont, Samaporn, Woosley, Stan E., Taggart, Kirsty, Foley, Ryan J., Yan, Lin, Lunnan, Ragnhild, Davis, Kyle W., Kilpatrick, Charles D., Siebert, Matthew R., Schulze, Steve, Ashall, Chris, Chen, Ting-Wan, De, Kishalay, Dimitriadis, Georgios, Dong, Dillon Z., Fremling, Christoffer, Gagliano, Alexander, Jha, Saurabh W., Jones, David O., Kasliwal, Mansi M., Miao, Hao-Yu, Pan, Yen-Chen, Perley, Daniel A., Ravi, Vikram, Rojas-Bravo, César, Sfaradi, Itai, Sollerman, Jesper, Alarcon, Vanessa, Angulo, Rodrigo, E. Clever, Karoli, Crawford, Payton, Couch, Cirilla, Dandu, Srujan, Dhara, Atirath, Johnson, Jessica, Lai, Zhisen, Smith, Carli

“…Abstract We present observations of a peculiar hydrogen- and helium-poor stripped-envelope (SE) supernova (SN) 2020wnt, primarily in the optical and…”
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JWST Spectroscopy of SN H0pe: Classification and Time Delays of a Triply Imaged Type Ia Supernova at z = 1.78 by Chen, Wenlei, Kelly, Patrick L., Frye, Brenda L., Pierel, Justin, Willner, S. P., Pascale, Massimo, Cohen, Seth H., Conselice, Christopher J., Engesser, Michael, Furtak, Lukas J., Gilman, Daniel, Grogin, Norman A., Huber, Simon, Jha, Saurabh W., Johansson, Joel, Koekemoer, Anton M., Larison, Conor, Meena, Ashish K., Siebert, Matthew R., Windhorst, Rogier A., Yan, Haojing, Zitrin, Adi

“…Abstract SN H0pe is a triply imaged supernova (SN) at redshift z = 1.78 discovered using the James Webb Space Telescope. In order to classify the SN…”
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SpectAcLE: An Improved Method for Modeling Light Echo Spectra by Partoush, Roee, Rest, Armin, Jencson, Jacob E., Poznanski, Dovi, Foley, Ryan J., Kilpatrick, Charles D., Andrews, Jennifer E., Angulo, Rodrigo, Badenes, Carles, Bianco, Federica B., Filippenko, Alexei V., Ridden-Harper, Ryan, Li, Xiaolong, Margheim, Steve, Matheson, Thomas, Olsen, Knut A. G., Siebert, Matthew R., Smith, Nathan, Welch, Douglas L., Zenteno, A.

“…Abstract Light echoes give us a unique perspective on the nature of supernovae and nonterminal stellar explosions. Spectroscopy of light echoes can reveal…”
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The Need for Enzymatic Steering in Abietic Acid Biosynthesis: Gas-Phase Chemical Dynamics Simulations of Carbocation Rearrangements on a Bifurcating Potential Energy Surface by Siebert, Matthew R, Zhang, Jiaxu, Addepalli, Srirangam V, Tantillo, Dean J, Hase, William L

“…Abietic acid, a constituent of pine resin, is naturally derived from abietadiene  a process that requires four enzymes: one (abietadiene synthase) for…”
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Differentiating Mechanistic Possibilities for the Thermal, Intramolecular [2 + 2] Cycloaddition of Allene−Ynes by Siebert, Matthew R, Osbourn, Joshua M, Brummond, Kay M, Tantillo, Dean J

“…Intramolecular [2 + 2] cycloaddition reactions of allene−ynes offer a quick and efficient route to fused bicyclic ring structures. Insights into the mechanism…”
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Gas-Phase Chemical Dynamics Simulations on the Bifurcating Pathway of the Pimaradienyl Cation Rearrangement: Role of Enzymatic Steering in Abietic Acid Biosynthesis by Siebert, Matthew R, Manikandan, Paranjothy, Sun, Rui, Tantillo, Dean J, Hase, William L

“…The biosynthesis of abietadiene is the first biosynthetically relevant process shown to involve a potential energy surface with a bifurcating reaction pathway…”
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Mechanism of Thiolate-Disulfide Exchange: Addition–Elimination or Effectively SN2? Effect of a Shallow Intermediate in Gas-Phase Direct Dynamics Simulations by Paranjothy, Manikandan, Siebert, Matthew R, Hase, William L, Bachrach, Steven M

“…Direct dynamics trajectory simulations were performed for two examples of the thiolate-disulfide exchange reaction, that is, HS– + HSSH and CH3S– + CH3SSCH3…”
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Direct Dynamics Simulations of the Product Channels and Atomistic Mechanisms for the OH– + CH3I Reaction. Comparison with Experiment by Xie, Jing, Sun, Rui, Siebert, Matthew R, Otto, Rico, Wester, Roland, Hase, William L

“…Electronic structure and direct dynamics calculations were used to study the potential energy surface and atomic-level dynamics for the OH– + CH3I reactions…”
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Sandwich Compounds of Transition Metals with Cyclopolyenes and Isolobal Boron Analogues by Gribanova, Tatyana N., Starikov, Andrey G., Minyaev, Ruslan M., Minkin, Vladimir I., Siebert, Matthew R., Tantillo, Dean J.

“…A series of sandwich compounds of transition metals (M=Ni, Fe, Cr) with cyclic hydrocarbon (M(CH)n) and borane (M(BH2)n), ligands (including mixed…”
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Discovery of a Fast Iron Low-ionization Outflow in the Early Evolution of the Nearby Tidal Disruption Event AT 2019qiz by Hung, Tiara, Foley, Ryan J., Veilleux, S., Cenko, S. B., Dai, Jane L., Auchettl, Katie, Brink, Thomas G., Dimitriadis, Georgios, Filippenko, Alexei V., Gezari, S., Holoien, Thomas W.-S., Kilpatrick, Charles D., Mockler, Brenna, Piro, Anthony L., Ramirez-Ruiz, Enrico, Rojas-Bravo, César, Siebert, Matthew R., van Velzen, Sjoert, Zheng, WeiKang

“…We report the results of ultraviolet (UV) and optical photometric and spectroscopic analysis of the tidal disruption event (TDE) AT 2019qiz. Our follow-up…”
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Double-peaked Balmer Emission Indicating Prompt Accretion Disk Formation in an X-Ray Faint Tidal Disruption Event by Hung, Tiara, Foley, Ryan J., Ramirez-Ruiz, Enrico, Dai, Jane L., Auchettl, Katie, Kilpatrick, Charles D., Mockler, Brenna, Brown, Jonathan S., Coulter, David A., Dimitriadis, Georgios, Holoien, Thomas W.-S., Law-Smith, Jamie A. P., Piro, Anthony L., Rest, Armin, Rojas-Bravo, César, Siebert, Matthew R.

“…We present the multiwavelength analysis of the tidal disruption event (TDE) AT 2018hyz (ASASSN-18zj). From follow-up optical spectroscopy, we detect the first…”
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Methyl Linoleate and Methyl Oleate Bond Dissociation Energies: Electronic Structure Fishing for Wise Crack Products by Wilson, Zachary R, Siebert, Matthew R

“…The world depends on petroleum for everything from the plastics that contain our food to the natural gas that heats our homes to the gasoline that feed our…”
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