Smithsonian Digital Repository: Recent submissions

  • SN 2019nyk: A rapidly declining Type II supernova with early interaction signatures 
    Dastidar, Raya; Pignata, Giuliano; Dukiya, Naveen; Misra, Kuntal; Hiramatsu, Daichi; Silva-Farfan, Javier; Andrew Howell, D.; Azalee Bostroem, K.; Singh, Mridweeka; Gangopadhyay, Anjasha; Kumar, Amit; Mccully, Curtis (2024)
    We present an optical photometric and spectroscopic analysis of the fast-declining hydrogen-rich Type II supernova (SN) 2019nyk. The light curve properties of SN 2019nyk align well with those of other fast-declining Type ...
  • Discovery of X-ray polarization angle rotation in the jet from blazar Mrk 421. 
    Di Gesu, Laura; Marshall, Herman L.; Ehlert, Steven R.; Kim, Dawoon E.; Donnarumma, Immacolata; Tavecchio, Fabrizio; Liodakis, Ioannis; Kiehlmann, Sebastian; Agudo, Iván; Jorstad, Svetlana G.; Muleri, Fabio; Marscher, Alan P.; Puccetti, Simonetta; Middei, Riccardo; Perri, Matteo; Pacciani, Luigi; Negro, Michela; Romani, Roger W.; Di Marco, Alessandro; Blinov, Dmitry; Bourbah, Ioakeim G.; Kontopodis, Evangelos; Mandarakas, Nikos; Romanopoulos, Stylianos; Skalidis, Raphael; Vervelaki, Anna; Casadio, Carolina; Escudero, Juan; Myserlis, Ioannis; Gurwell, Mark A.; Rao, Ramprasad; Keating, Garrett K.; Kouch, Pouya M.; Lindfors, Elina; Aceituno, Francisco José; Bernardos, Maria I.; Bonnoli, Giacomo; Casanova, Víctor; García-Comas, Maya; Agís-González, Beatriz; Husillos, César; Marchini, Alessandro; Sota, Alfredo; Imazawa, Ryo; Sasada, Mahito; Fukazawa, Yasushi; Kawabata, Koji S.; Uemura, Makoto; Mizuno, Tsunefumi; Nakaoka, Tatsuya; Akitaya, Hiroshi; Savchenko, Sergey S.; Vasilyev, Andrey A.; Gómez, José L.; Antonelli, Lucio A.; Barnouin, Thibault; Bonino, Raffaella; Cavazzuti, Elisabetta; Costamante, Luigi; Chen, Chien-Ting; Cibrario, Nicolò; De Rosa, Alessandra; Di Pierro, Federico; Errando, Manel; Kaaret, Philip; Karas, Vladimir; Krawczynski, Henric; Lisalda, Lindsey; Madejski, Grzegorz; Malacaria, Christian; Marin, Frédéric; Marinucci, Andrea; Massaro, Francesco; Matt, Giorgio; Mitsuishi, Ikuyuki; O'Dell, Stephen L.; Paggi, Alessandro; Peirson, Abel L.; Petrucci, Pierre-Olivier; Ramsey, Brian D.; Tennant, Allyn F.; Wu, Kinwah; Bachetti, Matteo; Baldini, Luca; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D.; Brez, Alessandro; Bucciantini, Niccolò; Capitanio, Fiamma; Castellano, Simone; Ciprini, Stefano; Costa, Enrico; Del Monte, Ettore; Di Lalla, Niccolò; Doroshenko, Victor; Dovciak, Michal; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Ferrazzoli, Riccardo; Garcia, Javier A.; Gunji, Shuichi; Hayashida, Kiyoshi; Heyl, Jeremy; Iwakiri, Wataru; Kislat, Fabian; Kitaguchi, Takao; Kolodziejczak, Jeffery J.; La Monaca, Fabio; Latronico, Luca; Maldera, Simone; Manfreda, Alberto; Ng, C. -Y; Omodei, Nicola; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Pesce-Rollins, Melissa; Pilia, Maura; Possenti, Andrea; Poutanen, Juri; Rankin, John; Ratheesh, Ajay; Roberts, Oliver J.; Sgrò, Carmelo; Slane, Patrick; Soffitta, Paolo; Spandre, Gloria; Swartz, Douglas A.; Tamagawa, Toru; Taverna, Roberto; Tawara, Yuzuru; Thomas, Nicholas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey S.; Turolla, Roberto; Vink, Jacco; Weisskopf, Martin C.; Xie, Fei; Zane, Silvia (2023)
    The magnetic-field conditions in astrophysical relativistic jets can be probed by multiwavelength polarimetry, which has been recently extended to X-rays. For example, one can track how the magnetic field changes in the ...
  • 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. ...
  • Simultaneous space and phase resolved X-ray polarimetry of the Crab pulsar and nebula 
    Bucciantini, Niccolò; Ferrazzoli, Riccardo; Bachetti, Matteo; Rankin, John; Di Lalla, Niccolò; Sgrò, Carmelo; Omodei, Nicola; Kitaguchi, Takao; Mizuno, Tsunefumi; Gunji, Shuichi; Watanabe, Eri; Baldini, Luca; Slane, Patrick; Weisskopf, Martin C.; Romani, Roger W.; Possenti, Andrea; Marshall, Herman L.; Silvestri, Stefano; Pacciani, Luigi; Negro, Michela; Muleri, Fabio; de Oña Wilhelmi, Emma; Xie, Fei; Heyl, Jeremy; Pesce-Rollins, Melissa; Wong, Josephine; Pilia, Maura; Agudo, Iván; Antonelli, Lucio A.; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D.; Bonino, Raffaella; Brez, Alessandro; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Chen, Chien-Ting; Ciprini, Stefano; Costa, Enrico; De Rosa, Alessandra; Del Monte, Ettore; Di Gesu, Laura; Di Marco, Alessandro; Donnarumma, Immacolata; Doroshenko, Victor; Dovciak, Michal; Ehlert, Steven R.; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Garcia, Javier A.; Hayashida, Kiyoshi; Iwakiri, Wataru; Jorstad, Svetlana G.; Kaaret, Philip; Karas, Vladimir; Kislat, Fabian; Kolodziejczak, Jeffery J.; Krawczynski, Henric; La Monaca, Fabio; Latronico, Luca; Liodakis, Ioannis; Maldera, Simone; Manfreda, Alberto; Marin, Frédéric; Marinucci, Andrea; Marscher, Alan P.; Massaro, Francesco; Matt, Giorgio; Mitsuishi, Ikuyuki; Ng, C. -Y; O'Dell, Stephen L.; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Peirson, Abel L.; Perri, Matteo; Petrucci, Pierre-Olivier; Poutanen, Juri; Puccetti, Simonetta; Ramsey, Brian D.; Ratheesh, Ajay; Roberts, Oliver J.; Soffitta, Paolo; Spandre, Gloria; Swartz, Doug; Tamagawa, Toru; Tavecchio, Fabrizio; Taverna, Roberto; Tawara, Yuzuru; Tennant, Allyn F.; Thomas, Nicolas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey; Turolla, Roberto; Vink, Jacco; Wu, Kinwah; Zane, Silvia (2023)
    The Crab pulsar and its nebula are among the most studied astrophysical systems, and constitute one of the most promising environments where high-energy processes and particle acceleration can be investigated. They are the ...
  • THESAN-HR: how does reionization impact early galaxy evolution? 
    Borrow, Josh; Kannan, Rahul; Garaldi, Enrico; Smith, Aaron; Vogelsberger, Mark; Pakmor, Rüdiger; Springel, Volker; Hernquist, Lars (2023)
    The feedback loop between the galaxies producing the background radiation field for reionization and their growth is crucial, particularly for low-mass haloes. Despite this, the vast majority of galaxy formation studies ...
  • The MillenniumTNG Project: the large-scale clustering of galaxies 
    Bose, Sownak; Hadzhiyska, Boryana; Barrera, Monica; Delgado, Ana Maria; Ferlito, Fulvio; Frenk, Carlos; Hernández-Aguayo, César; Hernquist, Lars; Kannan, Rahul; Pakmor, Rüdiger; Springel, Volker; White, Simon D. M. (2023)
    Modern redshift surveys are tasked with mapping out the galaxy distribution over enormous distance scales. Existing hydrodynamical simulations, however, do not reach the volumes needed to match upcoming surveys. We present ...
  • Kepler-102: Masses and Compositions for a Super-Earth and Sub-Neptune Orbiting an Active Star 
    Brinkman, Casey L.; Cadman, James; Weiss, Lauren; Gaidos, Eric; Rice, Ken; Huber, Daniel; Claytor, Zachary R.; Bonomo, Aldo S.; Buchhave, Lars A.; Collier Cameron, Andrew; Cosentino, Rosario; Dumusque, Xavier; Martinez Fiorenzano, Aldo F.; Ghedina, Adriano; Harutyunyan, Avet; Howard, Andrew; Isaacson, Howard; Latham, David W.; López-Morales, Mercedes; Malavolta, Luca; Micela, Giuseppina; Molinari, Emilio; Pepe, Francesco; Philips, David F.; Poretti, Ennio; Sozzetti, Alessandro; Udry, Stéphane (2023)
    Radial velocity (RV) measurements of transiting multiplanet systems allow us to understand the densities and compositions of planets unlike those in the solar system. Kepler-102, which consists of five tightly packed ...
  • Laboratory rotational spectroscopy of the magnesium-carbon chains MgC4 H and MgC3 N 
    Changala, P. Bryan; Genossar-Dan, Nadav; Baraban, Joshua H.; McCarthy, Michael C. (2024)
    Recent advances in circumstellar metal chemistry and laser-coolable molecules have spurred interest in the spectroscopy and electronic properties of alkaline earth metal-bearing polyatomic molecules. We report the microwave ...
  • The POKEMON Speckle Survey of Nearby M Dwarfs. II. Observations of 1125 Targets 
    Clark, Catherine A.; van Belle, Gerard T.; Horch, Elliott P.; Lund, Michael B.; Ciardi, David R.; von Braun, Kaspar; Winters, Jennifer G.; Everett, Mark E.; Hartman, Zachary D.; Llama, Joe (2024)
    Stellar multiplicity is correlated with many stellar properties, yet multiplicity measurements have proven difficult for the M dwarfs-the most common type of star in our galaxy-due to their faintness and the fact that a ...
  • High Mass Inner Regions Found in Five Outbursting Sources 
    Calahan, Jenny K.; Bergin, Edwin A.; van 't Hoff, Merel; Zhang, Ke; Calvet, Nuria; Hartmann, Lee (2024)
    Young stellar objects are thought to commonly undergo sudden accretion events that result in a rise in bolometric luminosity. These outbursts likely coincide with the onset of planet formation and could impact the formation ...
  • Polarization Properties of the Weakly Magnetized Neutron Star X-Ray Binary GS 1826-238 in the High Soft State 
    Capitanio, Fiamma; Fabiani, Sergio; Gnarini, Andrea; Ursini, Francesco; Ferrigno, Carlo; Matt, Giorgio; Poutanen, Juri; Cocchi, Massimo; Mikusincova, Romana; Farinelli, Ruben; Bianchi, Stefano; Kajava, Jari J. E.; Muleri, Fabio; Sanchez-Fernandez, Celia; Soffitta, Paolo; Wu, Kinwah; Agudo, Iván; Antonelli, Lucio A.; Bachetti, Matteo; Baldini, Luca; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bongiorno, Stephen D.; Bonino, Raffaella; Brez, Alessandro; Bucciantini, Niccolò; Castellano, Simone; Cavazzuti, Elisabetta; Ciprini, Stefano; Costa, Enrico; De Rosa, Alessandra; Del Monte, Ettore; Di Gesu, Laura; Di Lalla, Niccolò; Di Marco, Alessandro; Donnarumma, Immacolata; Doroshenko, Victor; Dovciak, Michal; Ehlert, Steven R.; Enoto, Teruaki; Evangelista, Yuri; Ferrazzoli, Riccardo; Garcia, Javier A.; Gunji, Shuichi; Hayashida, Kiyoshi; Heyl, Jeremy; Iwakiri, Wataru; Jorstad, Svetlana G.; Karas, Vladimir; Kitaguchi, Takao; Kolodziejczak, Jeffery J.; Krawczynski, Henric; La Monaca, Fabio; Latronico, Luca; Liodakis, Ioannis; Maldera, Simone; Manfreda, Alberto; Marin, Frédéric; Marinucci, Andrea; Marscher, Alan P.; Marshall, Herman L.; Mitsuishi, Ikuyuki; Mizuno, Tsunefumi; Ng, C. -Y; O'Dell, Stephen L.; Omodei, Nicola; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Peirson, Abel L.; Perri, Matteo; Pesce-Rollins, Melissa; Petrucci, Pierre-Olivier; Pilia, Maura; Possenti, Andrea; Puccetti, Simonetta; Ramsey, Brian D.; Rankin, John; Ratheesh, Ajay; Romani, Roger W.; Sgrò, Carmelo; Slane, Patrick; Spandre, Gloria; Tamagawa, Toru; Tavecchio, Fabrizio; Taverna, Roberto; Tawara, Yuzuru; Tennant, Allyn F.; Thomas, Nicholas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey S.; Turolla, Roberto; Vink, Jacco; Weisskopf, Martin C.; Xie, Fei; Zane, Silvia (2023)
    The launch of the Imaging X-ray Polarimetry Explorer (IXPE) on 2021 December 9 has opened a new window in X-ray astronomy. We report here the results of the first IXPE observation of a weakly magnetized neutron star, GS ...
  • Investigations of Massive Filaments and Star Formation (INFANT). I. Core Identification and Core Mass Function 
    Cheng, Yu; Lu, Xing; Sanhueza, Patricio; Liu, Hauyu Baobab; Zhang, Qizhou; Galvan-Madrid, Roberto; Wang, Ke; Nakamura, Fumitaka; Liu, Tie; Feng, Siyi; Li, Shanghuo; Jiao, Sihan; Tanaka, Kei E. I.; Liu, Xunchuan; Li, Pak Shing; Luo, Qiuyi; Gu, Qilao; Lin, Yuxin; Guzman, Andres E. (2024)
    Filamentary structures are ubiquitously found in high-mass star-forming clouds. To investigate the relationship between filaments and star formation, we carry out the INFANT (Investigations of Massive Filaments and Sar ...
  • Early Release Science of the exoplanet WASP-39b with JWST NIRSpec G395H 
    Alderson, Lili; Wakeford, Hannah R.; Alam, Munazza K.; Batalha, Natasha E.; Lothringer, Joshua D.; Adams Redai, Jea; Barat, Saugata; Brande, Jonathan; Damiano, Mario; Daylan, Tansu; Espinoza, Néstor; Flagg, Laura; Goyal, Jayesh M.; Grant, David; Hu, Renyu; Inglis, Julie; Lee, Elspeth K. H.; Mikal-Evans, Thomas; Ramos-Rosado, Lakeisha; Roy, Pierre-Alexis; Wallack, Nicole L.; Batalha, Natalie M.; Bean, Jacob L.; Benneke, Björn; Berta-Thompson, Zachory K.; Carter, Aarynn L.; Changeat, Quentin; Colón, Knicole D.; Crossfield, Ian J. M.; Désert, Jean-Michel; Foreman-Mackey, Daniel; Gibson, Neale P.; Kreidberg, Laura; Line, Michael R.; López-Morales, Mercedes; Molaverdikhani, Karan; Moran, Sarah E.; Morello, Giuseppe; Moses, Julianne I.; Mukherjee, Sagnick; Schlawin, Everett; Sing, David K.; Stevenson, Kevin B.; Taylor, Jake; Aggarwal, Keshav; Ahrer, Eva-Maria; Allen, Natalie H.; Barstow, Joanna K.; Bell, Taylor J.; Blecic, Jasmina; Casewell, Sarah L.; Chubb, Katy L.; Crouzet, Nicolas; Cubillos, Patricio E.; Decin, Leen; Feinstein, Adina D.; Fortney, Joanthan J.; Harrington, Joseph; Heng, Kevin; Iro, Nicolas; Kempton, Eliza M. -R; Kirk, James; Knutson, Heather A.; Krick, Jessica; Leconte, Jérémy; Lendl, Monika; MacDonald, Ryan J.; Mancini, Luigi; Mansfield, Megan; May, Erin M.; Mayne, Nathan J.; Miguel, Yamila; Nikolov, Nikolay K.; Ohno, Kazumasa; Palle, Enric; Parmentier, Vivien; Petit dit de la Roche, Dominique J. M.; Piaulet, Caroline; Powell, Diana; Rackham, Benjamin V.; Redfield, Seth; Rogers, Laura K.; Rustamkulov, Zafar; Tan, Xianyu; Tremblin, P.; Tsai, Shang-Min; Turner, Jake D.; de Val-Borro, Miguel; Venot, Olivia; Welbanks, Luis; Wheatley, Peter J.; Zhang, Xi (2023)
    Measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems<sup>1,2</sup>. Access to the chemical inventory of an ...
  • Signatures of strong magnetization and a metal-poor atmosphere for a Neptune-sized exoplanet 
    Ben-Jaffel, Lotfi; Ballester, Gilda E.; García Muñoz, Antonio; Lavvas, Panayotis; Sing, David K.; Sanz-Forcada, Jorge; Cohen, Ofer; Kataria, Tiffany; Henry, Gregory W.; Buchhave, Lars; Mikal-Evans, Thomas; Wakeford, Hannah R.; López-Morales, Mercedes (2022)
    The magnetosphere of an exoplanet has yet to be unambiguously detected. Investigations of star-planet interaction and neutral atomic hydrogen absorption during transit to detect magnetic fields in hot Jupiters have been ...
  • Retrospective review of the pathology of American pikas 
    Barrett, Adrienne; Holder, Kali; Knowles, Susan; LaDouceur, Elise E. B. (2024)
    American pikas (Ochotona princeps) are small lagomorphs that live in mountainous talus areas of western North America. Studies on the histopathology of American pikas are limited. We summarize here the clinical histories, ...
  • The MillenniumTNG Project: semi-analytic galaxy formation models on the past lightcone 
    Barrera, Monica; Springel, Volker; White, Simon D. M.; Hernández-Aguayo, César; Hernquist, Lars; Frenk, Carlos; Pakmor, Rüdiger; Ferlito, Fulvio; Hadzhiyska, Boryana; Delgado, Ana Maria; Kannan, Rahul; Bose, Sownak (2023)
    Upcoming large galaxy surveys will subject the standard cosmological model, Lambda Cold Dark Matter, to new precision tests. These can be tightened considerably if theoretical models of galaxy formation are available that ...
  • Star formation shut down by multiphase gas outflow in a galaxy at a redshift of 2.45 
    Belli, Sirio; Park, Minjung; Davies, Rebecca L.; Mendel, J. Trevor; Johnson, Benjamin D.; Conroy, Charlie; Benton, Chloe; Bugiani, Letizia; Emami, Razieh; Leja, Joel; Li, Yijia; Maheson, Gabriel; Mathews, Elijah P.; Naidu, Rohan P.; Nelson, Erica J.; Tacchella, Sandro; Terrazas, Bryan A.; Weinberger, Rainer (2024)
    Large-scale outflows driven by supermassive black holes are thought to have a fundamental role in suppressing star formation in massive galaxies. However, direct observational evidence for this hypothesis is still lacking, ...
  • The LOFAR Two-metre Sky Survey: Deep Fields data release 1. V. Survey description, source classifications, and host galaxy properties 
    Best, P. N.; Kondapally, R.; Williams, W. L.; Cochrane, Rachel K.; Duncan, K. J.; Hale, C. L.; Haskell, P.; Malek, K.; McCheyne, I.; Smith, D. J. B.; Wang, L.; Botteon, A.; Bonato, M.; Bondi, M.; Calistro Rivera, G.; Gao, F.; Gürkan, G.; Hardcastle, M. J.; Jarvis, M. J.; Mingo, B.; Miraghaei, H.; Morabito, L. K.; Nisbet, D.; Prandoni, I.; Röttgering, H. J. A.; Sabater, J.; Shimwell, T.; Tasse, C.; van Weeren, R. (2023)
    Source classifications, stellar masses, and star-formation rates are presented for ˜80 000 radio sources from the first data release of the Low Frequency Array Two-metre Sky Survey (LoTSS) Deep Fields, which represents the ...
  • What Sets the Star Formation Rate of Molecular Clouds? The Density Distribution as a Fingerprint of Compression and Expansion Rates 
    Appel, Sabrina M.; Burkhart, Blakesley; Semenov, Vadim A.; Federrath, Christoph; Rosen, Anna L.; Tan, Jonathan C. (2023)
    We use a suite of 3D simulations of star-forming molecular clouds, with and without stellar feedback, magnetic fields, and driven turbulence, to study the compression and expansion rates of the gas as functions of density. ...
  • The High-Energy X-ray Probe (HEX-P): the circum-nuclear environment of growing supermassive black holes 
    Boorman, P. G.; Torres-Alba, N.; Annuar, A.; Marchesi, S.; Pfeifle, R. W.; Stern, D.; Civano, F.; Balokovic, M.; Buchner, J.; Ricci, C.; Alexander, D. M.; Brandt, W. N.; Brightman, M.; Chen, C. T.; Creech, S.; Gandhi, P.; Garcia, J. A.; Harrison, F.; Hickox, R.; Kammoun, E.; LaMassa, S.; Lanzuisi, G.; Marcotulli, L.; Madsen, K.; Matt, G.; Matzeu, G.; Nardini, E.; Piotrowska, J. M.; Pizzetti, A.; Puccetti, S.; Sicilian, D.; Silver, R.; Walton, D. J.; Wilkins, D. R.; Zhao, X.; HEX-P (2024)
    Ever since the discovery of the first active galactic nuclei (AGN), substantial observational and theoretical effort has been invested into understanding how massive black holes have evolved across cosmic time. Circum-nuclear ...

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