Zobrazeno 1 - 10
of 290
pro vyhledávání: '"Cushing, Michael C."'
Autor:
Beiler, Samuel A., Mukherjee, Sagnick, Cushing, Michael C., Kirkpatrick, J. Davy, Schneider, Adam C., Kothari, Harshil, Marley, Mark S., Visscher, Channon
The sensitivity and spectral coverage of JWST is enabling us to test our assumptions of ultracool dwarf atmospheric chemistry, especially with regards to the abundances of phosphine (PH$_3$) and carbon dioxide (CO$_2$). In this paper, we use NIRSpec
Externí odkaz:
http://arxiv.org/abs/2407.15950
Autor:
Beiler, Samuel A., Cushing, Michael C., Kirkpatrick, J. Davy, Schneider, Adam C., Mukherjee, Sagnick, Marley, Mark S., Marocco, Federico, Smart, Richard L.
We present infrared spectral energy distributions of 23 late-type T and Y dwarfs obtained with the James Webb Space Telescope. The spectral energy distributions consist of NIRSpec PRISM and MIRI LRS spectra covering the $\sim$1--12 $\mu$m wavelength
Externí odkaz:
http://arxiv.org/abs/2407.08518
Autor:
Kothari, Harshil, Cushing, Michael C., Burningham, Ben, Beiler, Samuel A., Kirkpatrick, J. Davy, Schneider, Adam C., Mukherjee, Sagnick, Marley, Mark S.
We present an atmospheric retrieval analysis of the Y0 brown dwarf WISE J035934.06$-$540154.6 using the low-resolution 0.96--12 $\mu$m JWST spectrum presented in \citet{Beiler_2023}. We obtain volume number mixing ratios of the major gas-phase absorb
Externí odkaz:
http://arxiv.org/abs/2406.06493
Autor:
Rothermich, Austin, Faherty, Jacqueline K., Bardalez-Gagliuffi, Daniella, Schneider, Adam C., Kirkpatrick, J. Davy, Meisner, Aaron M., Burgasser, Adam J., Kuchner, Marc, Allers, Katelyn, Gagné, Jonathan, Caselden, Dan, Calamari, Emily, Popinchalk, Mark, Suárez, Genaro, Gerasimov, Roman, Aganze, Christian, Softich, Emma, Hsu, Chin-Chun, Karpoor, Preethi, Theissen, Christopher A., Rees, Jon, Cecilio-Flores-Elie, Rosario, Cushing, Michael C., Marocco, Federico, Casewell, Sarah, Bickle, Thomas P., Hamlet, Les, Allen, Michaela B., Beaulieu, Paul, Colin, Guillaume, Gantier, Jean Marc, Gramaize, Leopold, Jalowiczor, Peter, Kabatnik, Martin, Kiwy, Frank, Martin, David W., Pendrill, Billy, Pumphrey, Ben, Sainio, Arttu, Schumann, Jorg, Stevnbak, Nikolaj, Sun, Guoyou, Tanner, Christopher, Thakur, Vinod, Thevenot, Melina, Wedracki, Zbigniew
We report the identification of 89 new systems containing ultracool dwarf companions to main sequence stars and white dwarfs, using the citizen science project Backyard Worlds: Planet 9 and cross-reference between Gaia and CatWISE2020. Thirty-two of
Externí odkaz:
http://arxiv.org/abs/2403.04592
Autor:
Robbins, Grady, Meisner, Aaron M., Schneider, Adam C., Burgasser, Adam J., Kirkpatrick, J. Davy, Gagne, Jonathan, Hsu, Chih-Chun, Moranta, Leslie, Casewell, Sarah, Marocco, Federico, Gerasimov, Roman, Faherty, Jacqueline K., Kuchner, Marc J., Caselden, Dan, Cushing, Michael C., Alejandro, Sherelyn, Worlds, The Backyard, Collaboration, Planet 9, Collaboration, Cool Neighbors
Y dwarfs, the coolest known spectral class of brown dwarfs, overlap in mass and temperature with giant exoplanets, providing unique laboratories for studying low-temperature atmospheres. However, only a fraction of Y dwarf candidates have been spectr
Externí odkaz:
http://arxiv.org/abs/2310.09524
Autor:
Calissendorff, Per, De Furio, Matthew, Meyer, Michael, Albert, Loïc, Aganze, Christian, Ali-Dib, Mohamad, Gagliuffi, Daniella C. Bardalez, Baron, Frederique, Beichman, Charles A., Burgasser, Adam J., Cushing, Michael C., Faherty, Jacqueline Kelly, Fontanive, Clémence, Gelino, Christopher R., Gizis, John E., Greenbaum, Alexandra Z., Kirkpatrick, J. Davy, Leggett, Sandy K., Martinache, Frantz, Mary, David, N'Diaye, Mamadou, Pope, Benjamin J. S., Roellig, Thomas L, Sahlmann, Johannes, Sivaramakrishnan, Anand, Thorngren, Daniel Peter, Ygouf, Marie, Vandal, Thomas
We report the discovery of the first brown dwarf binary system with a Y dwarf primary, WISE J033605.05$-$014350.4, observed with NIRCam on JWST with the F150W and F480M filters. We employed an empirical point spread function binary model to identify
Externí odkaz:
http://arxiv.org/abs/2303.16923
Autor:
Schneider, Adam C., Burgasser, Adam J., Bruursema, Justice, Munn, Jeffrey A., Vrba, Frederick J., Caselden, Dan, Kabatnik, Martin, Rothermich, Austin, Sainio, Arttu, Bickle, Thomas P., Dahm, Scott E., Meisner, Aaron M., Kirkpatrick, J. Davy, Suarez, Genaro, Gagne, Jonathan, Faherty, Jacqueline K., Vos, Johanna M., Kuchner, Marc J., Williams, Stephen J., Gagliuffi, Daniella Bardalez, Aganze, Christian, Hsu, Chih-Chun, Theissen, Christopher, Cushing, Michael C., Marocco, Federico, Casewell, Sarah, Worlds, the Backyard, Collaboration, Planet 9
We present the discovery of CWISE J050626.96$+$073842.4 (CWISE J0506$+$0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE
Externí odkaz:
http://arxiv.org/abs/2301.02322
Autor:
Decleir, Marjorie, Gordon, Karl D., Andrews, Jennifer E., Clayton, Geoffrey C., Cushing, Michael C., Misselt, Karl A., Pendleton, Yvonne, Rayner, John, Vacca, William D., Whittet, D. C. B.
Publikováno v:
ApJ, 930, 15 (2022)
Interstellar dust extinction curves provide valuable information about dust properties, including the composition and size of the dust grains, and are essential to correct observations for the effects of interstellar dust. In this work, we measure a
Externí odkaz:
http://arxiv.org/abs/2204.13716
Autor:
Schneider, Adam C., Vrba, Frederick J., Munn, Jeffrey A., Dahm, Scott E., Bruursema, Justice, Williams, Stephen J., Dorland, Byran N., Faherty, Jacqueline K., Rothermich, Austin, Calamari, Emily, Cushing, Michael C., Caselden, Dan, Kabatnik, Martin, Pendrill, William, Sainio, Arttu, Andersen, Nikolaj Stevnbak, Tanner, Christopher
We have used data from the UKIRT Hemisphere Survey (UHS) to search for substellar members of the Hyades cluster. Our search recovered several known substellar Hyades members, and two known brown dwarfs that we suggest may be members based on a new ki
Externí odkaz:
http://arxiv.org/abs/2203.11090
Autor:
Softich, Emma, Schneider, Adam C., Patience, Jennifer, Burgasser, Adam J., Shkolnik, Evgenya, Faherty, Jacqueline K., Caselden, Dan, Meisner, Aaron M., Kirkpatrick, J. Davy, Kuchner, Marc J., Gagne, Jonathan, Gagliuffi, Daniella Bardalez, Cushing, Michael C., Casewell, Sarah L., Aganze, Christian, Hsu, Chih-Chun, Andersen, Nikolaj Stevnbak, Kiwy, Frank, Thevenot, Melina, Worlds, The Backyard, Collaboration, Planet 9
While stars are often found in binary systems, brown dwarf binaries are much rarer. Brown dwarf--brown dwarf pairs are typically difficult to resolve because they often have very small separations. Using brown dwarfs discovered with data from the Wid
Externí odkaz:
http://arxiv.org/abs/2202.02315