Zobrazeno 1 - 10
of 6 458
pro vyhledávání: '"Channon A"'
Autor:
Lee, Elspeth K. H., Tsai, Shang-Min, Moses, Julianne I., Plane, John M. C., Visscher, Channon, Klippenstein, Stephen J.
Due to the detection of phosphine PH3 in the Solar System gas giants Jupiter and Saturn, PH3 has long been suggested to be detectable in exosolar substellar atmospheres too. However, to date, a direct detection of phosphine has proven to be elusive i
Externí odkaz:
http://arxiv.org/abs/2409.06802
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:
Phillips, Caprice L., Faherty, Jacqueline K., Burningham, Ben, Vos, Johanna M., Gonzales, Eileen, Griffith, Emily J., Merchan, Sherelyn Alejandro, Calamari, Emily, Visscher, Channon, Morley, Caroline V., Whiteford, Niall, Gaarn, Josefine, Ilyin, Ilya, Strassmeier, Klaus
We present an atmospheric retrieval analysis on a set of young, cloudy, red L-dwarfs -- CWISER J124332.12+600126.2 and WISEP J004701.06+680352.1 -- using the \textit{Brewster} retrieval framework. We also present the first elemental abundance measure
Externí odkaz:
http://arxiv.org/abs/2407.01694
Autor:
Morley, Caroline V., Mukherjee, Sagnick, Marley, Mark S., Fortney, Jonathan J., Visscher, Channon, Lupu, Roxana, Gharib-Nezhad, Ehsan, Thorngren, Daniel, Freedman, Richard
We present a new grid of cloudy atmosphere and evolution models for substellar objects. These models include the effect of refractory cloud species, including silicate clouds, on the spectra and evolution. We include effective temperatures from 900 t
Externí odkaz:
http://arxiv.org/abs/2402.00758
Autor:
Mukherjee, Sagnick, Fortney, Jonathan J., Morley, Caroline V., Batalha, Natasha E., Marley, Mark S., Karalidi, Theodora, Visscher, Channon, Lupu, Roxana, Freedman, Richard, Gharib-Nezhad, Ehsan
Publikováno v:
The Astrophysical Journal, Volume 963, Issue 1, id.73, 26 pp, March 2024
Disequilibrium chemistry due to vertical mixing in the atmospheres of many brown dwarfs and giant exoplanets is well-established. Atmosphere models for these objects typically parameterize mixing with the highly uncertain $K_{\rm zz}$ diffusion param
Externí odkaz:
http://arxiv.org/abs/2402.00756
Autor:
Calamari, Emily, Faherty, Jacqueline K., Visscher, Channon, Gemma, Marina E., Burningham, Ben, Rothermich, Austin
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 systems, termed "compositiona
Externí odkaz:
http://arxiv.org/abs/2401.11038
Autor:
Grant, David, Lewis, Nikole K., Wakeford, Hannah R., Batalha, Natasha E., Glidden, Ana, Goyal, Jayesh, Mullens, Elijah, MacDonald, Ryan J., May, Erin M., Seager, Sara, Stevenson, Kevin B., Valenti, Jeff A., Visscher, Channon, Alderson, Lili, Allen, Natalie H., Cañas, Caleb I., Colón, Knicole, Clampin, Mark, Espinoza, Néstor, Gressier, Amélie, Huang, Jingcheng, Lin, Zifan, Long, Douglas, Louie, Dana R., Peña-Guerrero, Maria, Ranjan, Sukrit, Sotzen, Kristin S., Valentine, Daniel, Anderson, Jay, Balmer, William O., Bellini, Andrea, Hoch, Kielan K. W., Kammerer, Jens, Libralato, Mattia, Mountain, C. Matt, Perrin, Marshall D., Pueyo, Laurent, Rickman, Emily, Rebollido, Isabel, Sohn, Sangmo Tony, van der Marel, Roeland P., Watkins, Laura L.
Clouds are prevalent in many of the exoplanet atmospheres that have been observed to date. For transiting exoplanets, we know if clouds are present because they mute spectral features and cause wavelength-dependent scattering. While the exact composi
Externí odkaz:
http://arxiv.org/abs/2310.08637
Autor:
Sobirov, Ikboljon, Xie, Cheng, Siddique, Muhammad, Patel, Parijat, Chan, Kenneth, Halborg, Thomas, Kotanidis, Christos, Fatima, Zarqiash, West, Henry, Channon, Keith, Neubauer, Stefan, Antoniades, Charalambos, Yaqub, Mohammad
Since the emergence of convolutional neural networks (CNNs), and later vision transformers (ViTs), the common paradigm for model development has always been using a set of identical block types with varying parameters/hyper-parameters. To leverage th
Externí odkaz:
http://arxiv.org/abs/2306.03494
Autor:
Gaarn, Josefine, Burningham, Ben, Faherty, Jacqueline K., Visscher, Channon, Marley, Mark S., Gonzales, Eileen C., Calamari, Emily, Gagliuffi, Daniella Bardalez, Lupu, Roxana, Freedman, Richard
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 characterisation may reveal the extent to which planetary forma
Externí odkaz:
http://arxiv.org/abs/2303.16863
Autor:
Samuel Channon-Wells, Dominic Habgood-Coote, Ortensia Vito, Rachel Galassini, Victoria J. Wright, Andrew J. Brent, Robert S. Heyderman, Suzanne T. Anderson, Brian Eley, Federico Martinón-Torres, Michael Levin, Myrsini Kaforou, On behalf of UK Kawasaki Disease Genetics, ILULU, GENDRES and EUCLIDS consortia, Jethro A. Herberg
Publikováno v:
Journal of Translational Medicine, Vol 22, Iss 1, Pp 1-14 (2024)
Abstract Background Whole blood host transcript signatures show great potential for diagnosis of infectious and inflammatory illness, with most published signatures performing binary classification tasks. Barriers to clinical implementation include v
Externí odkaz:
https://doaj.org/article/aa9f5af63b3447538a074a42a9b96c2b
