Smithsonian Digital Repository: Recent submissions

  • Effect of Spherical Polarization on the Magnetic Spectrum of the Solar Wind 
    Dunn, Corina; Bowen, Trevor A.; Mallet, Alfred; Badman, Samuel T.; Bale, Stuart D. (2023)
    Magnetic fluctuations in the solar wind are often observed to maintain constant magnitude of the magnetic field in a manner consistent with spherically polarized large-amplitude Alfvén waves. We investigate the effect of ...
  • Plant-insect interactions of the Matzitzi and Tuzancoa formations during the Permian 
    Flores-Barragan, Miguel Angel; Velasco-de León, María Patricia; Labandeira, Conrad C. (2024)
    In this work a quantitative and qualitative analysis of the herbivory in foliar elements of the Permian of Mexico was carried out, four functional feeding groups with low occurrence in the paleoflora of the Permian of ...
  • A 3D View of Orion. I. Barnard's Loop 
    Foley, Michael M.; Goodman, Alyssa; Zucker, Catherine; Forbes, John C.; Konietzka, Ralf; Swiggum, Cameren; Alves, João; Bally, John; Soler, Juan D.; Großschedl, Josefa E.; Bialy, Shmuel; Grudic, Michael Y.; Leike, Reimar; Enßlin, Torsten (2023)
    Barnard's Loop is a famous arc of Ha emission located in the Orion star-forming region. Here, we provide evidence of a possible formation mechanism for Barnard's Loop and compare our results with recent work suggesting a ...
  • Hubble Space Telescope and Hyper-Suprime-Cam Weak-lensing Study of the Equal-mass Dissociative Merger CIZA J0107.7+5408 
    Finner, Kyle; Randall, Scott W.; Jee, M. James; Blanton, Elizabeth L.; Cho, Hyejeon; Clarke, Tracy E.; Giacintucci, Simona; Nulsen, Paul; van Weeren, Reinout (2023)
    A dissociative merger is formed by the interplay of ram pressure and gravitational forces, which can lead to a spatial displacement of the dark matter and baryonic components of the recently collided subclusters. CIZA ...
  • Hydrodynamic Atmospheric Escape in HD 189733 b: Signatures of Carbon and Hydrogen Measured with the Hubble Space Telescope 
    Dos Santos, Leonardo A.; García Muñoz, Antonio; Sing, David K.; López-Morales, Mercedes; Alam, Munazza K.; Bourrier, Vincent; Ehrenreich, David; Henry, Gregory W.; Lecavelier des Etangs, Alain; Mikal-Evans, Thomas; Nikolov, Nikolay K.; Sanz-Forcada, Jorge; Wakeford, Hannah R. (2023)
    One of the most well-studied exoplanets to date, HD 189733 b, stands out as an archetypal hot Jupiter with many observations and theoretical models aimed at characterizing its atmosphere, interior, host star, and environment. ...
  • Early Release Science of the exoplanet WASP-39b with JWST NIRISS 
    Feinstein, Adina D.; Radica, Michael; Welbanks, Luis; Murray, Catriona Anne; Ohno, Kazumasa; Coulombe, Louis-Philippe; Espinoza, Néstor; Bean, Jacob L.; Teske, Johanna K.; Benneke, Björn; Line, Michael R.; Rustamkulov, Zafar; Saba, Arianna; Tsiaras, Angelos; Barstow, Joanna K.; Fortney, Jonathan J.; Gao, Peter; Knutson, Heather A.; MacDonald, Ryan J.; Mikal-Evans, Thomas; Rackham, Benjamin V.; Taylor, Jake; Parmentier, Vivien; Batalha, Natalie M.; Berta-Thompson, Zachory K.; Carter, Aarynn L.; Changeat, Quentin; dos Santos, Leonardo A.; Gibson, Neale P.; Goyal, Jayesh M.; Kreidberg, Laura; López-Morales, Mercedes; Lothringer, Joshua D.; Miguel, Yamila; Molaverdikhani, Karan; Moran, Sarah E.; Morello, Giuseppe; Mukherjee, Sagnick; Sing, David K.; Stevenson, Kevin B.; Wakeford, Hannah R.; Ahrer, Eva-Maria; Alam, Munazza K.; Alderson, Lili; Allen, Natalie H.; Batalha, Natasha E.; Bell, Taylor J.; Blecic, Jasmina; Brande, Jonathan; Caceres, Claudio; Casewell, S. L.; Chubb, Katy L.; Crossfield, Ian J. M.; Crouzet, Nicolas; Cubillos, Patricio E.; Decin, Leen; Désert, Jean-Michel; Harrington, Joseph; Heng, Kevin; Henning, Thomas; Iro, Nicolas; Kempton, Eliza M. -R; Kendrew, Sarah; Kirk, James; Krick, Jessica; Lagage, Pierre-Olivier; Lendl, Monika; Mancini, Luigi; Mansfield, Megan; May, E. M.; Mayne, N. J.; Nikolov, Nikolay K.; Palle, Enric; Petit dit de la Roche, Dominique J. M.; Piaulet, Caroline; Powell, Diana; Redfield, Seth; Rogers, Laura K.; Roman, Michael T.; Roy, Pierre-Alexis; Nixon, Matthew C.; Schlawin, Everett; Tan, Xianyu; Tremblin, P.; Turner, Jake D.; Venot, Olivia; Waalkes, William C.; Wheatley, Peter J.; Zhang, Xi (2023)
    The Saturn-mass exoplanet WASP-39b has been the subject of extensive efforts to determine its atmospheric properties using transmission spectroscopy<sup>1-4</sup>. However, these efforts have been hampered by modelling ...
  • Constraining Stellar Rotation at the Zero-age Main Sequence with TESS 
    Douglas, S. T.; Cargile, P. A.; Matt, S. P.; Breimann, A. A.; Pérez Chávez, J. A.; Huang, C. X.; Wright, N. J.; Zhou, G. (2024)
    The zero-age main sequence (ZAMS) is a critical phase for stellar angular momentum evolution, as stars transition from contraction-dominated spin-up to magnetic wind-dominated spin-down. We present the first robust ...
  • Nonthermal X-Rays from Pulsation-driven Shocks in Cepheids 
    Fraschetti, Federico; Anastasopoulou, Konstantina; Drake, Jeremy J.; Evans, Nancy Remage (2023)
    Rapid X-ray phase-dependent flux enhancement in the archetype classical Cepheid star d Cep was observed by XMM-Newton and Chandra. We jointly analyze thermal and nonthermal components of the time-resolved X-ray spectra ...
  • Optical Spectroscopic Observations of Gamma-Ray Blazar Candidates. XII. Follow-up Observations from SOAR, Blanco, NTT, and OAN-SPM 
    García-Pérez, Abigail; Peña-Herazo, Harold A.; Massaro, Francesco; Chavushyan, Vahram; D'Abrusco, Raffaele; Masetti, Nicola; Landoni, Marco; La Franca, Fabio; Patiño-Álvarez, Víctor M.; Amaya-Almazán, Raúl A.; Milisavljevic, Dan; Paggi, Alessandro; Ricci, Federica; Jiménez-Bailón, Elena; Smith, Howard A. (2023)
    Roughly one third of the sources in the Fermi-LAT catalogs are listed as unidentified/unassociated ?-ray sources (UGS), i.e., they lack a low-energy counterpart. In addition, there is a growing population of blazars of ...
  • Detection of Carbon Monoxide in the Atmosphere of WASP-39b Applying Standard Cross-correlation Techniques to JWST NIRSpec G395H Data 
    Esparza-Borges, Emma; López-Morales, Mercedes; Adams Redai, Jéa I.; Pallé, Enric; Kirk, James; Casasayas-Barris, Núria; Batalha, Natasha E.; Rackham, Benjamin V.; Bean, Jacob L.; Casewell, S. L.; Decin, Leen; Dos Santos, Leonardo A.; García Muñoz, Antonio; Harrington, Joseph; Heng, Kevin; Hu, Renyu; Mancini, Luigi; Molaverdikhani, Karan; Morello, Giuseppe; Nikolov, Nikolay K.; Nixon, Matthew C.; Redfield, Seth; Stevenson, Kevin B.; Wakeford, Hannah R.; Alam, Munazza K.; Benneke, Björn; Blecic, Jasmina; Crouzet, Nicolas; Daylan, Tansu; Inglis, Julie; Kreidberg, Laura; Petit dit de la Roche, Dominique J. M.; Turner, Jake D. (2023)
    Carbon monoxide was recently reported in the atmosphere of the hot Jupiter WASP-39b using the NIRSpec PRISM transit observation of this planet, collected as part of the JWST Transiting Exoplanet Community Early Release ...
  • X-Ray Spectral Characterization of the Young Cygnus OB2 Population 
    Flaccomio, E.; Albacete-Colombo, J. F.; Drake, J. J.; Guarcello, M. G.; Kashyap, V.; Wright, N. J.; Briggs, K.; Ercolano, B.; McCollough, Michael; Sciortino, S. (2023)
    We analyze the X-ray spectra of the ~8000 sources detected in the Cygnus OB2 Chandra Legacy Survey (this focus issue), with the goals of characterizing the coronal plasma of the young low-mass stars in the region and ...
  • The JWST Discovery of the Triply Imaged Type Ia "Supernova H0pe" and Observations of the Galaxy Cluster PLCK G165.7+67.0 
    Frye, Brenda L.; Pascale, Massimo; Pierel, Justin; Chen, Wenlei; Foo, Nicholas; Leimbach, Reagen; Garuda, Nikhil; Cohen, Seth H.; Kamieneski, Patrick S.; Windhorst, Rogier A.; Koekemoer, Anton M.; Kelly, Pat; Summers, Jake; Engesser, Michael; Liu, Daizhong; Furtak, Lukas J.; Polletta, Maria del Caren; Harrington, Kevin C.; Willner, S. P.; Diego, Jose M.; Jansen, Rolf A.; Coe, Dan; Conselice, Christopher J.; Dai, Liang; Dole, Hervé; D'Silva, Jordan C. J.; Driver, Simon P.; Grogin, Norman A.; Marshall, Madeline A.; Meena, Ashish K.; Nonino, Mario; Ortiz, Rafael; Pirzkal, Nor; Robotham, Aaron; Ryan, Russell E.; Strolger, Lou; Tompkins, Scott; Willmer, Christopher N. A.; Yan, Haojing; Yun, Min S.; Zitrin, Adi (2024)
    A Type Ia supernova (SN) at z = 1.78 was discovered in James Webb Space Telescope Near Infrared Camera imaging of the galaxy cluster PLCK G165.7+67.0 (G165; z = 0.35). The SN is situated 1.5–2 kpc from the host-galaxy ...
  • Tracing dense gas in six resolved GMCs of the Andromeda Galaxy 
    Forbrich, Jan; Lada, Charles J.; Pety, Jérôme; Petitpas, Glen (2023)
    We present dense-gas-tracing molecular observations of six resolved Giant Molecular Clouds (GMCs) in the Andromeda Galaxy (M31). Using the NOEMA interferometer, we observed the transitions of HCN(1-0), HCO+(1-0), and ...
  • The Evolution of the 1/f Range within a Single Fast-solar-wind Stream between 17.4 and 45.7 Solar Radii 
    Davis, Nooshin; Chandran, B. D. G.; Bowen, T. A.; Badman, S. T.; de Wit, T. Dudok; Chen, C. H. K.; Bale, S. D.; Huang, Zesen; Sioulas, Nikos; Velli, Marco (2023)
    The power spectrum of magnetic field fluctuations in the fast solar wind (V <sub>SW</sub> > 500 km s<sup>-1</sup>) at magnetohydrodynamic scales is characterized by two different power laws on either side of a break frequency ...
  • Ethical futures in biological anthropology: Research, teaching, community engagement, and curation involving deceased individuals 
    De La Cova, Carlina; Hofman, Courtney A.; Marklein, Kathryn E.; Sholts, Sabrina B.; Watkins, Rachel; Magrogan, Paige; Zuckerman, Molly Kathleen (2024)
    Although ethical reforms in biological anthropology have gained ground in recent years, there is still a scarcity of ethical standards for work involving historical documented collections (HDCs) at US museums and universities. ...
  • Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope 
    Doeleman, Sheperd S.; Barrett, John; Blackburn, Lindy; Bouman, Katherine L.; Broderick, Avery E.; Chaves, Ryan; Fish, Vincent L.; Fitzpatrick, Garret; Freeman, Mark; Fuentes, Antonio; Gómez, José L.; Haworth, Kari; Houston, Janice; Issaoun, Sara; Johnson, Michael D.; Kettenis, Mark; Loinard, Laurent; Nagar, Neil; Narayanan, Gopal; Oppenheimer, Aaron; Palumbo, Daniel C. M.; Patel, Nimesh; Pesce, Dominic W.; Raymond, Alexander W.; Roelofs, Freek; Srinivasan, Ranjani; Tiede, Paul; Weintroub, Jonathan; Wielgus, Maciek (2023)
    We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (EHT). This program—the next-generation Event Horizon Telescope (ngEHT)—will form a networked global ...
  • A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b 
    Coulombe, Louis-Philippe; Benneke, Björn; Challener, Ryan; Piette, Anjali A. A.; Wiser, Lindsey S.; Mansfield, Megan; MacDonald, Ryan J.; Beltz, Hayley; Feinstein, Adina D.; Radica, Michael; Savel, Arjun B.; Dos Santos, Leonardo A.; Bean, Jacob L.; Parmentier, Vivien; Wong, Ian; Rauscher, Emily; Komacek, Thaddeus D.; Kempton, Eliza M. -R; Tan, Xianyu; Hammond, Mark; Lewis, Neil T.; Line, Michael R.; Lee, Elspeth K. H.; Shivkumar, Hinna; Crossfield, Ian J. M.; Nixon, Matthew C.; Rackham, Benjamin V.; Wakeford, Hannah R.; Welbanks, Luis; Zhang, Xi; Batalha, Natalie M.; Berta-Thompson, Zachory K.; Changeat, Quentin; Désert, Jean-Michel; Espinoza, Néstor; Goyal, Jayesh M.; Harrington, Joseph; Knutson, Heather A.; Kreidberg, Laura; López-Morales, Mercedes; Shporer, Avi; Sing, David K.; Stevenson, Kevin B.; Aggarwal, Keshav; Ahrer, Eva-Maria; Alam, Munazza K.; Bell, Taylor J.; Blecic, Jasmina; Caceres, Claudio; Carter, Aarynn L.; Casewell, Sarah L.; Crouzet, Nicolas; Cubillos, Patricio E.; Decin, Leen; Fortney, Jonathan J.; Gibson, Neale P.; Heng, Kevin; Henning, Thomas; Iro, Nicolas; Kendrew, Sarah; Lagage, Pierre-Olivier; Leconte, Jérémy; Lendl, Monika; Lothringer, Joshua D.; Mancini, Luigi; Mikal-Evans, Thomas; Molaverdikhani, Karan; Nikolov, Nikolay K.; Ohno, Kazumasa; Palle, Enric; Piaulet, Caroline; Redfield, Seth; Roy, Pierre-Alexis; Tsai, Shang-Min; Venot, Olivia; Wheatley, Peter J. (2023)
    Close-in giant exoplanets with temperatures greater than 2,000 K (`ultra-hot Jupiters') have been the subject of extensive efforts to determine their atmospheric properties using thermal emission measurements from the ...
  • Detection of Interstellar E-1-cyano-1,3-butadiene in GOTHAM Observations of TMC-1 
    Cooke, Ilsa R.; Xue, Ci; Changala, P. Bryan; Shay, Hannah Toru; Byrne, Alex N.; Tang, Qi Yu; Fried, Zachary T. P.; Kelvin Lee, Kin Long; Loomis, Ryan A.; Lamberts, Thanja; Remijan, Anthony; Burkhardt, Andrew M.; Herbst, Eric; McCarthy, Michael C.; McGuire, Brett A. (2023)
    We report the detection of the lowest-energy conformer of E-1-cyano-1,3-butadiene (E-1- ${{\rm{C}}}_{4}{{\rm{H}}}_{5}\mathrm{CN}$ ), a linear isomer of pyridine, using the fourth data reduction of the GBT Observations of ...
  • TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain 
    Dai, Fei; Masuda, Kento; Beard, Corey; Robertson, Paul; Goldberg, Max; Batygin, Konstantin; Bouma, Luke; Lissauer, Jack J.; Knudstrup, Emil; Albrecht, Simon; Howard, Andrew W.; Knutson, Heather A.; Petigura, Erik A.; Weiss, Lauren M.; Isaacson, Howard; Kristiansen, Martti Holst; Osborn, Hugh; Wang, Songhu; Wang, Xian-Yu; Behmard, Aida; Greklek-McKeon, Michael; Vissapragada, Shreyas; Batalha, Natalie M.; Brinkman, Casey L.; Chontos, Ashley; Crossfield, Ian; Dressing, Courtney; Fetherolf, Tara; Fulton, Benjamin; Hill, Michelle L.; Huber, Daniel; Kane, Stephen R.; Lubin, Jack; MacDougall, Mason; Mayo, Andrew; Mocnik, Teo; Akana Murphy, Joseph M.; Rubenzahl, Ryan A.; Scarsdale, Nicholas; Tyler, Dakotah; Zandt, Judah Van; Polanski, Alex S.; Schwengeler, Hans Martin; Terentev, Ivan A.; Benni, Paul; Bieryla, Allyson; Ciardi, David; Falk, Ben; Furlan, E.; Girardin, Eric; Guerra, Pere; Hesse, Katharine M.; Howell, Steve B.; Lillo-Box, J.; Matthews, Elisabeth C.; Twicken, Joseph D.; Villaseñor, Joel; Latham, David W.; Jenkins, Jon M.; Ricker, George R.; Seager, Sara; Vanderspek, Roland; Winn, Joshua N. (2023)
    Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMRs). Dynamical evolution over time could disrupt the delicate resonant configuration. ...
  • A Hale-like Cycle in the Solar Twin 18 Scorpii 
    do Nascimento, J. -D; Barnes, S. A.; Saar, S. H.; de Mello, G. F. Porto; Hall, J. C.; Anthony, F.; de Almeida, L.; Velloso, E. N.; da Costa, J. S.; Petit, P.; Strugarek, A.; Wargelin, B. J.; Castro, M.; Strassmeier, K. G.; Brun, A. S. (2023)
    Characterizing the cyclic magnetic activity of stars that are close approximations of our Sun offers our best hope for understanding our Sun's current and past magnetism, the space weather around solar-type stars, and more ...

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