Zobrazeno 1 - 10
of 217
pro vyhledávání: '"Lupu, Roxana"'
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:
Tan, Xianyu, Komacek, Thaddeus D., Batalha, Natasha E., Deming, Drake, Lupu, Roxana, Parmentier, Vivien, Pierrehumbert, Raymond T.
Ultra-hot Jupiters (UHJs) are natural laboratories to study extreme physics in planetary atmospheres and their rich observational data sets are yet to be confronted with models with varying complexities at a population level. In this work, we update
Externí odkaz:
http://arxiv.org/abs/2401.03859
The origin of life on Earth would benefit from a prebiotic atmosphere that produced nitriles, like HCN, which enable ribonucleotide synthesis. However, geochemical evidence suggests that Hadean air was relatively oxidizing with negligible photochemic
Externí odkaz:
http://arxiv.org/abs/2307.09761
Autor:
Kempton, Eliza M. -R., Zhang, Michael, Bean, Jacob L., Steinrueck, Maria E., Piette, Anjali A. A., Parmentier, Vivien, Malsky, Isaac, Roman, Michael T., Rauscher, Emily, Gao, Peter, Bell, Taylor J., Xue, Qiao, Taylor, Jake, Savel, Arjun B., Arnold, Kenneth E., Nixon, Matthew C., Stevenson, Kevin B., Mansfield, Megan, Kendrew, Sarah, Zieba, Sebastian, Ducrot, Elsa, Dyrek, Achrène, Lagage, Pierre-Olivier, Stassun, Keivan G., Henry, Gregory W., Barman, Travis, Lupu, Roxana, Malik, Matej, Kataria, Tiffany, Ih, Jegug, Fu, Guangwei, Welbanks, Luis, McGill, Peter
There are no planets intermediate in size between Earth and Neptune in our Solar System, yet these objects are found around a substantial fraction of other stars. Population statistics show that close-in planets in this size range bifurcate into two
Externí odkaz:
http://arxiv.org/abs/2305.06240
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:
Tannock, Megan E., Metchev, Stanimir, Hood, Callie E., Mace, Gregory N., Fortney, Jonathan J., Morley, Caroline V., Jaffe, Daniel T., Lupu, Roxana
We present Gemini South/IGRINS observations of the 1060 K T6 dwarf 2MASS J08173001$-$6155158 with unprecedented resolution ($R\equiv\lambda/\Delta\lambda=45\,000$) and signal-to-noise ratio (SNR > 200) for a late-type T dwarf. We use this benchmark o
Externí odkaz:
http://arxiv.org/abs/2206.03519
Autor:
Nguyen, T. Giang, Cowan, Nicolas B., Pierrehumbert, Raymond T., Lupu, Roxana E., Moores, John E.
Lava planets have non-global, condensible atmospheres similar to icy bodies within the solar system. Because they depend on interior dynamics, studying the atmospheres of lava planets can lead to understanding unique geological processes driven by th
Externí odkaz:
http://arxiv.org/abs/2204.13727
Autor:
Zilinskas, Mantas, van Buchem, Christiaan, Miguel, Yamila, Louca, Amy, Lupu, Roxana, Zieba, Sebastian, van Westrenen, Wim
Publikováno v:
A&A 661, A126 (2022)
Lava worlds belong to a class of short orbital period planets reaching dayside temperatures high enough to melt their silicate crust. Theory predicts that the resulting lava oceans outgas their volatile components, attaining equilibrium with the over
Externí odkaz:
http://arxiv.org/abs/2202.04759
Autor:
Karalidi, Theodora, Marley, Mark, Fortney, Jonathan J., Morley, Caroline, Saumon, Didier, Lupu, Roxana, Visscher, Channon, Freedman, Richard
Exoplanet and brown dwarf atmospheres commonly show signs of disequilibrium chemistry. In the James Webb Space Telescope era high resolution spectra of directly imaged exoplanets will allow the characterization of their atmospheres in more detail, an
Externí odkaz:
http://arxiv.org/abs/2110.11824