Smithsonian Digital Repository: Recent submissions

  • Sub-m s<sup>-1</sup> upper limits from a deep HARPS-N radial-velocity search for planets orbiting HD 166620 and HD 144579 
    John, A. Anna; Collier Cameron, A.; Faria, J. P.; Mortier, A.; Wilson, T. G.; Malavolta, L.; Buchhave, L. A.; Dumusque, X.; López-Morales, M.; Haywood, R. D.; Rice, K.; Sozzetti, A.; Latham, D. W.; Udry, S.; Pepe, F.; Pinamonti, M.; Vanderburg, A.; Ghedina, A.; Cosentino, R.; Stalport, M.; Nicholson, B. A.; Fiorenzano, A.; Poretti, E. (2023)
    Minimizing the impact of stellar variability in radial velocity (RV) measurements is a critical challenge in achieving the 10 cm s<sup>-1</sup> precision needed to hunt for Earth twins. Since 2012, a dedicated programme ...
  • Estimating Ejecta Mass Ratios in Kepler's Supernova Remnant: Global X-Ray Spectral Analysis Including Suzaku Systematics and Emitting Volume Uncertainties 
    Holland-Ashford, Tyler; Slane, Patrick; Lopez, Laura A.; Auchettl, Katie; Kashyap, Vinay (2023)
    The exact origins of many Type Ia supernovae-progenitor scenarios and explosive mechanisms-remain uncertain. In this work, we analyze the global Suzaku X-ray spectrum of Kepler's supernova remnant (SNR) in order to constrain ...
  • The X-ray polarization of the Seyfert 1 galaxy IC 4329A 
    Ingram, A.; Ewing, M.; Marinucci, A.; Tagliacozzo, D.; Rosario, D. J.; Veledina, A.; Kim, D. E.; Marin, F.; Bianchi, S.; Poutanen, J.; Matt, G.; Marshall, H. L.; Ursini, F.; De Rosa, A.; Petrucci, P. -O; Madejski, G.; Barnouin, T.; Gesu, L. Di; Dovciak, M.; Gianolli, V. E.; Krawczynski, H.; Loktev, V.; Middei, R.; Podgorny, J.; Puccetti, S.; Ratheesh, A.; Soffitta, P.; Tombesi, F.; Ehlert, S. R.; Massaro, F.; Agudo, I.; Antonelli, L. A.; Bachetti, M.; Baldini, L.; Baumgartner, W. H.; Bellazzini, R.; Bongiorno, S. D.; Bonino, R.; Brez, A.; Bucciantini, N.; Capitanio, F.; Castellano, S.; Cavazzuti, E.; Chen, C. -T; Ciprini, S.; Costa, E.; Del Monte, E.; Lalla, N. Di; Marco, A. Di; Donnarumma, I.; Doroshenko, V.; Enoto, T.; Evangelista, Y.; Fabiani, S.; Ferrazzoli, R.; García, J. A.; Gunji, S.; Heyl, J.; Iwakiri, W.; Jorstad, S. G.; Kaaret, P.; Karas, V.; Kislat, F.; Kitaguchi, T.; Kolodziejczak, J. J.; Monaca, F. La; Latronico, L.; Liodakis, I.; Maldera, S.; Manfreda, A.; Marscher, A. P.; Mitsuishi, I.; Mizuno, T.; Muleri, F.; Negro, M.; Ng, C. -Y; O'Dell, S. L.; Omodei, N.; Oppedisano, C.; Papitto, A.; Pavlov, G. G.; Peirson, A. L.; Perri, M.; Pesce-Rollins, M.; Pilia, M.; Possenti, A.; Ramsey, B. D.; Rankin, J.; Roberts, O. J.; Romani, R. W.; Sgrò, C.; Slane, P.; Spandre, G.; Swartz, D. A.; Tamagawa, T.; Tavecchio, F.; Taverna, R.; Tawara, Y.; Tennant, A. F.; Thomas, N. E.; Trois, A.; Tsygankov, S. S.; Turolla, R.; Vink, J.; Weisskopf, M. C.; Wu, K.; Xie, F.; Zane, S. (2023)
    We present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy IC 4329A. The Imaging X-ray Polarimetry Explorer (IXPE) observed the source for ~500 ks, supported by XMM-Newton (~60 ks) and NuSTAR (~80 ks) ...
  • Functional differences between the extraordinary eyes of deep-sea hyperiid amphipods 
    Jessop, Anna-Lee; Bagheri, Zahra M.; Partridge, Julian C.; Osborn, Karen J.; Hemmi, Jan M. (2024)
    The ocean's midwater is a uniquely challenging yet predictable and simple visual environment. The need to see without being seen in this dim, open habitat has led to extraordinary visual adaptations. To understand these ...
  • Seawater intrusion effects on nitrogen cycling in the regulated Nakdong River Estuary, South Korea 
    Huang, Yan; Song, Bongkeun; Zhang, Qinglong; Park, Yunjung; Wilson, Stephanie J.; Tobias, Craig R.; An, Soonmo (2024)
    Research on the impact of seawater intrusion on nitrogen (N) cycling in coastal estuarine ecosystems is crucial; however, there is still a lack of relevant research conducted under in-situ field conditions. The effects of ...
  • Macrolitter and microplastics along the East Pacific coasts - A homemade problem needing local solutions 
    Honorato-Zimmer, Daniela; Escobar-Sanchez, Gabriela; Deakin, Katie; De Veer, Diamela; Galloway, Tamara; Guevara-Torrejon, Valeska; Howard, Jessica; Jones, Jen; Lewis, Ceri; Ribeiro, Francisca; Savage, Georgie; Thiel, Martin (2024)
    The East Pacific (EP) region, especially the central and southern EP, has been fairly less studied than other world's regions with respect to marine litter pollution. This comprehensive literature review (257 peer-reviewed ...
  • The MillenniumTNG Project: high-precision predictions for matter clustering and halo statistics 
    Hernández-Aguayo, César; Springel, Volker; Pakmor, Rüdiger; Barrera, Monica; Ferlito, Fulvio; White, Simon D. M.; Hernquist, Lars; Hadzhiyska, Boryana; Delgado, Ana Maria; Kannan, Rahul; Bose, Sownak; Frenk, Carlos (2023)
    Cosmological inference with large galaxy surveys requires theoretical models that combine precise predictions for large-scale structure with robust and flexible galaxy formation modelling throughout a sufficiently large ...
  • Stability and Detectability of Exomoons Orbiting HIP 41378 f, a Temperate Jovian Planet with an Anomalously Low Apparent Density 
    Harada, Caleb K.; Dressing, Courtney D.; Alam, Munazza K.; Kirk, James; López-Morales, Mercedes; Ohno, Kazumasa; Akinsanmi, Babatunde; Barros, Susana C. C.; Buchhave, Lars A.; Collier Cameron, A.; Crossfield, Ian J. M.; Dai, Fei; Gao, Peter; Giacalone, Steven; Grouffal, Salomé; Lillo-Box, Jorge; Mayo, Andrew W.; Mortier, Annelies; Santerne, Alexandre; Santos, Nuno C.; Sousa, Sérgio G.; Turtelboom, Emma V.; Vanderburg, Andrew; Wheatley, Peter J. (2023)
    Moons orbiting exoplanets ("exomoons") may hold clues about planet formation, migration, and habitability. In this work, we investigate the plausibility of exomoons orbiting the temperate (T <sub>eq</sub> = 294 K) giant ...
  • Effects of spatial variability in vegetation phenology, climate, landcover, biodiversity, topography, and soil property on soil respiration across a coastal ecosystem 
    He, Yinan; Bond-Lamberty, Ben; Myers-Pigg, Allison N.; Newcomer, Michelle E.; Ladau, Joshua; Holmquist, James R.; Brown, James B.; Falco, Nicola (2024)
    Coastal terrestrial -aquatic interfaces (TAIs) are crucial contributors to global biogeochemical cycles and carbon exchange. The soil carbon dioxide (CO 2 ) efflux in these transition zones is however poorly understood due ...
  • The MillenniumTNG Project: an improved two-halo model for the galaxy-halo connection of red and blue galaxies 
    Hadzhiyska, Boryana; Eisenstein, Daniel; Hernquist, Lars; Pakmor, Rüdiger; Bose, Sownak; Delgado, Ana Maria; Contreras, Sergio; Kannan, Rahul; White, Simon D. M.; Springel, Volker; Frenk, Carlos; Hernández-Aguayo, César; Barrera, Fulvio Ferlito; Monica (2023)
    Approximate methods to populate dark-matter haloes with galaxies are of great utility to galaxy surveys. However, the limitations of simple halo occupation models (HODs) preclude a full use of small-scale galaxy clustering ...
  • Interpreting Sunyaev-Zel'dovich observations with MillenniumTNG: mass and environment scaling relations 
    Hadzhiyska, Boryana; Ferraro, Simone; Pakmor, Rüdiger; Bose, Sownak; Delgado, Ana Maria; Hernández-Aguayo, César; Kannan, Rahul; Springel, Volker; White, Simon D. M.; Hernquist, Lars (2023)
    Sunyaev-Zel'dovich (SZ) measurements can dramatically improve our understanding of the intergalactic medium and the role of feedback processes in galaxy formation, allowing us to calibrate important astrophysical systematics ...
  • A tilted dark halo origin of the Galactic disk warp and flare 
    Han, Jiwon Jesse; Conroy, Charlie; Hernquist, Lars (2023)
    The outer disk of the Milky Way Galaxy is warped and flared. Several mechanisms have been proposed to explain these phenomena, but none have quantitatively reproduced both features. Recent work has demonstrated that the ...
  • Improved Constraints on the 21 cm EoR Power Spectrum and the X-Ray Heating of the IGM with HERA Phase I Observations 
    HERA Collaboration; Abdurashidova, Zara; Adams, Tyrone; Aguirre, James E.; Alexander, Paul; Ali, Zaki S.; Baartman, Rushelle; Balfour, Yanga; Barkana, Rennan; Beardsley, Adam P.; Bernardi, Gianni; Billings, Tashalee S.; Bowman, Judd D.; Bradley, Richard F.; Breitman, Daniela; Bull, Philip; Burba, Jacob; Carey, Steve; Carilli, Chris L.; Cheng, Carina; Choudhuri, Samir; DeBoer, David R.; de Lera Acedo, Eloy; Dexter, Matt; Dillon, Joshua S.; Ely, John; Ewall-Wice, Aaron; Fagnoni, Nicolas; Fialkov, Anastasia; Fritz, Randall; Furlanetto, Steven R.; Gale-Sides, Kingsley; Garsden, Hugh; Glendenning, Brian; Gorce, Adélie; Gorthi, Deepthi; Greig, Bradley; Grobbelaar, Jasper; Halday, Ziyaad; Hazelton, Bryna J.; Heimersheim, Stefan; Hewitt, Jacqueline N.; Hickish, Jack; Jacobs, Daniel C.; Julius, Austin; Kern, Nicholas S.; Kerrigan, Joshua; Kittiwisit, Piyanat; Kohn, Saul A.; Kolopanis, Matthew; Lanman, Adam; La Plante, Paul; Lewis, David; Liu, Adrian; Loots, Anita; Ma, Yin-Zhe; MacMahon, David H. E.; Malan, Lourence; Malgas, Keith; Malgas, Cresshim; Maree, Matthys; Marero, Bradley; Martinot, Zachary E.; McBride, Lisa; Mesinger, Andrei; Mirocha, Jordan; Molewa, Mathakane; Morales, Miguel F.; Mosiane, Tshegofalang; Muñoz, Julian B.; Murray, Steven G.; Nagpal, Vighnesh; Neben, Abraham R.; Nikolic, Bojan; Nunhokee, Chuneeta D.; Nuwegeld, Hans; Parsons, Aaron R.; Pascua, Robert; Patra, Nipanjana; Pieterse, Samantha; Qin, Yuxiang; Razavi-Ghods, Nima; Robnett, James; Rosie, Kathryn; Santos, Mario G.; Sims, Peter; Singh, Saurabh; Smith, Craig; Swarts, Hilton; Tan, Jianrong; Thyagarajan, Nithyanandan; Wilensky, Michael J.; Williams, Peter K. G.; van Wyngaarden, Pieter; Zheng, Haoxuan (2023)
    We report the most sensitive upper limits to date on the 21 cm epoch of reionization power spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization Array (HERA). Using similar analysis ...
  • Smarter foragers do not forage smarter: a test of the diet hypothesis for brain expansion 
    Hirsch, Ben T.; Kays, Roland; Alavi, Shauhin; Caillaud, Damien; Havmoller, Rasmus; Mares, Rafael; Crofoot, Margaret (2024)
    A leading hypothesis for the evolution of large brains in humans and other species is that a feedback loop exists whereby intelligent animals forage more efficiently, which results in increased energy intake that fuels the ...
  • The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts 
    Hadzhiyska, Boryana; Hernquist, Lars; Eisenstein, Daniel; Delgado, Ana Maria; Bose, Sownak; Kannan, Rahul; Pakmor, Rüdiger; Springel, Volker; Contreras, Sergio; Barrera, Monica; Ferlito, Fulvio; Hernández-Aguayo, César; White, Simon D. M.; Frenk, Carlos (2023)
    Luminous red galaxies (LRGs) and blue star-forming emission-line galaxies (ELGs) are key tracers of large-scale structure used by cosmological surveys. Theoretical predictions for such data are often done via simplistic ...
  • A new species of the anchovy genus <i>Stolephorus</i> Lacepède 1803, and redescriptions of <i>Stolephorus carpentariae</i> (De Vis 1882) and <i>Stolephorus holodon</i> (Boulenger 1900) (Clupeiformes: Engraulidae) 
    Hata, Harutaka; Motomura, Hiroyuki (2024)
    Stolephorus brevis sp. nov., a new anchovy from New Guinea, is described, and two similar species [Stolephorus carpentariae (De Vis 1882) (distributed in Gulf of Papua and north coast of Australia) and Stolephorus holodon ...
  • Tilted Dark Halos Are Common and Long-lived, and Can Warp Galactic Disks 
    Han, Jiwon Jesse; Semenov, Vadim; Conroy, Charlie; Hernquist, Lars (2023)
    In the Lambda cold dark matter paradigm, the dark halo governs the gravitational potential within which a galaxy can form and evolve. In this Letter we show that the present-day inner (r 5 Gyr in isolated evolution, and ...
  • Detection of Carbon Monoxide's 4.6 Micron Fundamental Band Structure in WASP-39b's Atmosphere with JWST NIRSpec G395H 
    Grant, David; Lothringer, Joshua D.; Wakeford, Hannah R.; Alam, Munazza K.; Alderson, Lili; Bean, Jacob L.; Benneke, Björn; Désert, Jean-Michel; Daylan, Tansu; Flagg, Laura; Hu, Renyu; Inglis, Julie; Kirk, James; Kreidberg, Laura; López-Morales, Mercedes; Mancini, Luigi; Mikal-Evans, Thomas; Molaverdikhani, Karan; Palle, Enric; Rackham, Benjamin V.; Redfield, Seth; Stevenson, Kevin B.; Valenti, Jeff A.; Wallack, Nicole L.; Aggarwal, Keshav; Ahrer, Eva-Maria; Crossfield, Ian J. M.; Crouzet, Nicolas; Iro, Nicolas; Nikolov, Nikolay K.; Wheatley, Peter J.; JWST Transiting Exoplanet Community ERS Team (2023)
    Carbon monoxide (CO) is predicted to be the dominant carbon-bearing molecule in giant planet atmospheres and, along with water, is important for discerning the oxygen and therefore carbon-to-oxygen ratio of these planets. ...
  • 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 ...
  • A Second Earth-sized Planet in the Habitable Zone of the M Dwarf, TOI-700 
    Gilbert, Emily A.; Vanderburg, Andrew; Rodriguez, Joseph E.; Hord, Benjamin J.; Clement, Matthew S.; Barclay, Thomas; Quintana, Elisa V.; Schlieder, Joshua E.; Kane, Stephen R.; Jenkins, Jon M.; Twicken, Joseph D.; Kunimoto, Michelle; Vanderspek, Roland; Arney, Giada N.; Charbonneau, David; Günther, Maximilian N.; Huang, Chelsea X.; Isopi, Giovanni; Kostov, Veselin B.; Kristiansen, Martti H.; Latham, David W.; Mallia, Franco; Mamajek, Eric E.; Mireles, Ismael; Quinn, Samuel N.; Ricker, George R.; Schulte, Jack; Seager, S.; Suissa, Gabrielle; Winn, Joshua N.; Youngblood, Allison; Zapparata, Aldo (2023)
    We report the discovery of TOI-700 e, a 0.95 R <sub>?</sub> planet residing in the Optimistic Habitable Zone (HZ) of its host star. This discovery was enabled by multiple years of monitoring from NASA's Transiting Exoplanet ...

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