Browsing by Author "Burningham, Ben"

Now showing items 1-17 of 17

    • Atmospheric Retrieval of L Dwarfs: Benchmarking Results and Characterizing the Young Planetary Mass Companion HD 106906 b in the Near-infrared 

      Adams, Arthur D.; Meyer, Michael R.; Howe, Alex R.; Burningham, Ben; Daemgen, Sebastian; Fortney, Jonathan; Line, Mike; Marley, Mark; Quanz, Sascha P.; Todorov, Kamen (2023-10-13)
      We present model constraints on the atmospheric structure of HD 106906 b, a planetary-mass companion orbiting at a ∼700 au projected separation around a 15 Myr old stellar binary, using the APOLLO retrieval code on spectral ...

    • An Atmospheric Retrieval of the Brown Dwarf Gliese 229B 

      Calamari, Emily; Faherty, Jacqueline K.; Burningham, Ben; Gonzales, Eileen; Bardalez-Gagliuffi, Daniella; Vos, Johanna M.; Gemma, Marina; Whiteford, Niall; Gaarn, Josefine (2022-12-01)
      We present results from an atmospheric retrieval analysis of Gl 229B using the Brewster retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval work of Line et al.; Zalesky et al. ...

    • Cloud busting: enstatite and quartz clouds in the atmosphere of 2M2224-0158 

      Burningham, Ben; Faherty, Jacqueline K.; Gonzales, Eileen C.; Marley, Mark S.; Visscher, Channon; Lupu, Roxana; Gaarn, Joesphine; Bieger, Michelle Fabienne; Freedman, Richard; Saumon, Didier (2021-05-18)
      We present the most detailed data-driven exploration of cloud opacity in a substellar object to-date. We have tested over 60 combinations of cloud composition and structure, particle size distribution, scattering model, ...

    • A Comparative L-dwarf Sample Exploring the Interplay Between Atmospheric Assumptions and Data Properties 

      Gonzales, Eileen C.; Burningham, Ben; Faherty, Jacqueline K.; Lewis, Nikole K.; Visscher, Channon; Marley, Mark (2022-10-13)
      Comparisons of atmospheric retrievals can reveal powerful insights on the strengths and limitations of our data and modeling tools. In this paper, we examine a sample of 5 similar effective temperature (Teff) or spectral ...

    • The first retrieval of a substellar subdwarf: A cloud-free SDSS J125637.13-022452.4 

      Gonzales, Eileen C.; Burningham, Ben; Faherty, Jacqueline K.; Visscher, Channon; Marley, Mark S.; Lupu, Roxana; Freedman, Richard; Lewis, Nikole K. (2021-12-08)
      We present the first retrieval analysis of a substellar subdwarf, SDSS J125637.13-022452.4 (SDSS J1256-0224), using the Brewster retrieval code base. We find SDSS J1256-0224 is best fit by a cloud-free model with an ion ...

    • Kepler-1649b: : An Exo-Venus in the Solar Neighborhood 

      Angelo, Isabel; Rowe, Jason F.; Howell, Steve B.; Quintana, Elisa V.; Still, Martin; Mann, Andrew W.; Burningham, Ben; Barclay, Thomas; Ciardi, David R.; Huber, Daniel (2017-03-17)
      The Kepler mission has revealed that Earth-sized planets are common, and dozens have been discovered to orbit in or near their host star's habitable zone. A major focus in astronomy is to determine which of these exoplanets ...

    • Large-Scale Searches for Brown Dwarfs and Free-Floating Planets 

      Burningham, Ben (Springer Nature, 2018-04-13)
      Searches of large-scale surveys have resulted in the discovery of over 1000 brown dwarfs in the Solar neighborhood. In this chapter we review the progress in finding brown dwarfs in large datasets, highlighting the key ...

    • A LOFAR mini-survey for low-frequency radio emission from the nearest brown dwarfs 

      Burningham, Ben; Hardcastle, Martin; Nichols, Jonathan; Casewell, Sarah; Littlefair, Stuart; Stark, Craig; Burleigh, Matthew; Metchev, Stanimir; Tannock, Megan; van Weeren, Reinout; Williams, Wendy Louise; Wynn, Graham (2016-12-01)
      We have conducted a mini-survey for low-frequency radio emission from some of the closest brown dwarfs to the Sun with rapid rotation rates: SIMP J013656.5+093347, WISEPC J150649.97+702736.0, and WISEPA J174124.26+255319.5. ...

    • Longitudinally Resolved Spectral Retrieval (ReSpect) of WASP-43b 

      Cubillos, Patricio E.; Keating, Dylan; Cowan, Nicolas B.; Vos, Johanna M.; Burningham, Ben; Ygouf, Marie; Karalidi, Theodora; Zhou, Yifan; Gonzales, Eileen C. (2021-07-02)
      Thermal phase variations of short period planets indicate that they are not spherical cows: day-to-night temperature contrasts range from hundreds to thousands of degrees, rivaling their vertical temperature contrasts. ...

    • Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs 

      Vos, Johanna M.; Burningham, Ben; Faherty, Jacqueline K.; Alejandro, Sherelyn; Gonzales, Eileen; Calamari, Emily; Gagliuffi, Daniella Bardalez; Visscher, Channon; Tan, Xianyu; Morley, Caroline V.; Marley, Mark; Gemma, Marina E.; Whiteford, Niall; Gaarn, Josefine; Park, Grace (2023-02-01)
      We present an atmospheric retrieval analysis of a pair of highly variable, ∼200 Myr old, early T type planetary-mass exoplanet analogs SIMP J01365662+0933473 and 2MASS J21392676+0220226 using the Brewster retrieval framework. ...

    • Predicting Cloud Conditions in Substellar Mass Objects Using Ultracool Dwarf Companions 

      Calamari, Emily; Faherty, Jacqueline K.; Visscher, Channon; Gemma, Marina E.; Burningham, Ben; Rothermich, Austin (2024-02-29)
      We present results from conducting a theoretical chemical analysis of a sample of benchmark companion brown dwarfs whose primary star is of type F, G or K. We summarize the entire known sample of these types of companion ...

    • Proceedings of Abstracts, School of Physics, Engineering and Computer Science Research Conference 2022 

      Amafabia, Daerefa-a; Asimea, Laurel; Bally, John; Baran, Anthony; Boies, Adam; Borjali, Amirhossein; Bosomworth, Chloe; Burningham, Ben; Chaliasou, Napoleana-Anna; CHEN, Yong Kang; Cheong, Yuen Ki; Chizari, Mahmoud; Chung, Etelka; Coppin, Kristen; David-West, Opukuro; Dennler, Nik; Dhakal, Hom; Dimov, Nikolay; Dmitruk, Emil; Donald, Allen; Drix, Damien; Dzib, Sergio A.; Eltaweel, Mahmoud; Fadlelseed, Sajid; Farahani, Atena; Felix, Adrian; Foat, Tim; Forbrich, Jan; Franco, Maximilien; Gaarn, Joesphine; Garratt, Tracy; Geach, Jim; Ghias, Narges; Ghita, Adrian; Giannetti, Niccolo; Vargas-Gonzalez, Jaime; Greenaway, Richard; Haritos, George; Hatami, Sara; Haydock, David; Helian, Na; Herfatmanesh, Mohammad Reza; Herve, Jean-Baptiste; Hesse, Evelyn; Korani, Hossein; Hosseini, Vahid; Hu, Wei; Hubbard, Thomas; Inal, Jameel; Irigo, Patrick; Ismail, Sikiru O.; Jepleting, Fiona; Ji, Wei; Johnston, Ian; Jombo, Gbanaibolou; Kadir, Shabnam; Kalyvas, Christos; Kamran, Syed Muhammad; Kanellopoulos, Antonios; Kiflay, Aklil Zenebe; Kirner, Raimund; Knox, Kerry; Kobayashi, Chiaki; Kumar, Dhirendra; Kumar, Ritesh; Lane, Peter; Lekkala, Himayasri; Lewis, Andrew; Li, Liang; Luo, Qi; Madani, Hossein; Mallet, Colin; Maruthupandian, Surya; Mathen, Elizabeth Reeja; Matousek, Pavel; McCool, Simon; McGarry, James C.; Menon, Catherine; Metzner, Christoph; Miles, Rachael E. H.; Moeinnia, Hadi; Moggridge, Paul; Mohseni, Mahdi; Montalvão, Diogo; Moraby, Mohammad Najeeb; Murnane, Darragh; Norgate, Marc; Nourani, Amir; Prasad, Kumar Shantanu; Ramalingam, Soodamani; Rastogi, Shavika; Reid, Jonathan P.; Ren, Guogang; Rivilla, Victor M.; Saidpour, Hossein; Saito, Kiyoshi; Sajedi, Seyed Amir Hossein; Salge, Christoph; Samararatne, Samadhi; Schmuker, Michael; Sensoy, Elif; Shriram, Ajay; Singh, Harpreet; Sorouraddin, Yasser; Steuber, Volker; Stone, Nicholas; Sun, Yi; Sureddi, Roopesh; Sutton, Samuel; Thomas, Peter; Timms, Andrew R; Tiwari, P. R.; Tsokanos, Athanasios; Vadalia, Mansukhlal; Yaqoob, Muhammad; Yulianto, Muhamad; Zheng, Minghua (University of Hertfordshire, 2022-11-04)
      The present proceedings record the abstracts submitted and accepted for presentation at SPECS 2022, the second edition of the School of Physics, Engineering and Computer Science Research Conference that took place online, ...

    • The puzzle of the formation of T8 dwarf Ross 458c 

      Gaarn, Josefine; Burningham, Ben; Faherty, Jacqueline K.; Visscher, Channon; Marley, Mark S.; Gonzales, Eileen C.; Calamari, Emily; Gagliuffi, Daniella Bardalez; Lupu, Roxana; Freedman, Richard (2023-06-01)
      At the lowest masses, the distinction between brown dwarfs and giant exoplanets is often blurred and literature classifications rarely reflect the deuterium burning boundary. Atmospheric characterization may reveal the ...

    • Retrieval of atmospheric properties of cloudy L dwarfs 

      Burningham, Ben; Marley, Mark S.; Line, Michael R.; Lupu, Roxana; Visscher, Channon; Morley, Caroline V.; Saumon, Didier; Freedman, Richard (2017-09-01)
      We present the first results from applying the spectral inversion technique in the cloudy L dwarf regime. Our new framework provides a flexible approach to modelling cloud opacity which can be built incrementally as the ...

    • Retrieval of SDSS J1416+1348AB 

      Gonzales, Eileen; Burningham, Ben; Faherty, Jackie; Cleary, Colleen; Visscher, Channon; Marley, Mark; Lupu, Roxana; Freedman, Richard (2020-12-10)
      We present the distance-calibrated spectral energy distribution (SED) of the d/sdL7 SDSS J14162408+1348263A (J1416A) and an updated SED for SDSS J14162408+1348263B (J1416B). We also present the first retrieval analysis of ...

    • Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs I : Characterizing Benchmarks, Gl570D and HD3651B 

      Line, Michael R.; Teske, Johanna; Burningham, Ben; Fortney, Jonathan; Marley, Mark (2015-07-10)
      Interpreting the spectra of brown dwarfs is key to determining the fundamental physical and chemical processes occurring in their atmospheres. Powerful Bayesian atmospheric retrieval tools have recently been applied to ...

    • Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs II : Properties of 11 T-dwarfs 

      Line, Michael R.; Marley, Mark S.; Liu, Michael C.; Burningham, Ben; Morley, Caroline V.; Hinkel, Natalie R.; Teske, Johanna; Fortney, Jonathan J.; Lupu, Roxana; Freedman, Richard (2017-10-20)
      Brown dwarf spectra are rich in information revealing of the chemical and physical processes operating in their atmospheres. We apply a recently developed atmospheric retrieval tool to an ensemble of late T-dwarf (600-800K) ...