Zobrazeno 1 - 10
of 751
pro vyhledávání: '"P. Gressier"'
Autor:
August, Prune C., Buchhave, Lars A., Diamond-Lowe, Hannah, Mendonça, João M., Gressier, Amélie, Rathcke, Alexander D., Allen, Natalie H., Fortune, Mark, Jones, Kathryn D., Meier-Valdés, Erik A., Demory, Brice-Olivier, Espinoza, Nestor, Fisher, Chloe E., Gibson, Neale P., Heng, Kevin, Hoeijmakers, Jens, Hooton, Matthew J., Kitzmann, Daniel, Prinoth, Bibiana
M dwarf systems offer a unique opportunity to study terrestrial exoplanetary atmospheres due to their smaller size and cooler temperatures. However, due to the extreme conditions these host stars impose, it is unclear whether their small, close-in ro
Externí odkaz:
http://arxiv.org/abs/2410.11048
Autor:
Gressier, Amélie, MacDonald, Ryan J., Espinoza, Néstor, Wakeford, Hannah R., Lewis, Nikole K., Goyal, Jayesh, Louie, Dana R., Radica, Michael, Batalha, Natasha E., Long, Douglas, May, Erin M., Mullens, Elijah, Seager, Sara, Stevenson, Kevin B., Valenti, Jeff A., Alderson, Lili, Allen, Natalie H., Cañas, Caleb I., Challener, Ryan C., Colòn, Knicole, Glidden, Ana, Grant, David, Huang, Jingcheng, Lin, Zifan, Valentine, Daniel, Mountain, C. Matt, Pueyo, Laurent, Perrin, Marshall D., van der Marel, Roeland P.
We present the first emission spectrum of the hot Jupiter WASP-17 b using one eclipse observation from the JWST Near Infrared Imager and Slitless Spectrograph (NIRISS) Single Object Slitless Spectroscopy (SOSS) mode. Covering a wavelength range of 0.
Externí odkaz:
http://arxiv.org/abs/2410.08149
Autor:
Valentine, Daniel, Wakeford, Hannah R., Challener, Ryan C., Batalha, Natasha E., Lewis, Nikole K., Grant, David, Mullens, Elijah, Alderson, Lili, Goyal, Jayesh, MacDonald, Ryan J., May, Erin M., Seager, Sara, Stevenson, Kevin B., Valenti, Jeff A., Allen, Natalie H., Espinoza, Néstor, Glidden, Ana, Gressier, Amélie, Huang, Jingcheng, Lin, Zifan, Long, Douglas, Louie, Dana R., Clampin, Mark, Perrin, Marshall, van der Marel, Roeland P., Mountain, C. Matt
Publikováno v:
The Astronomical Journal, 168:123 (21pp), 2024 September
We present the first spectroscopic characterisation of the dayside atmosphere of WASP-17b in the mid-infrared using a single JWST MIRI/LRS eclipse observation. From forward-model fits to the 5-12 $\mu$m emission spectrum, we tightly constrain the hea
Externí odkaz:
http://arxiv.org/abs/2410.08148
Autor:
Agol, Eric, Allen, Natalie H., Benneke, Björn, Delrez, Laetitia, Doyon, René, Ducrot, Elsa, Espinoza, Néstor, Gressier, Amélie, Lafrenière, David, Lim, Olivia, Lustig-Yaeger, Jacob, Piaulet-Ghorayeb, Caroline, Radica, Michael, Rustamkulov, Zafar, Sotzen, Kristin S.
The TRAPPIST-1 system has been extensively observed with JWST in the near-infrared with the goal of measuring atmospheric transit transmission spectra of these temperate, Earth-sized exoplanets. A byproduct of these observations has been much more pr
Externí odkaz:
http://arxiv.org/abs/2409.11620
Autor:
Gressier, Amélie, Espinoza, Néstor, Allen, Natalie H., Sing, David K., Banerjee, Agnibha, Barstow, Joanna K., Valenti, Jeff A., Lewis, Nikole K., Birkmann, Stephan M., Challener, Ryan C., Manjavacas, Elena, de Oliveira, Catarina Alves, Crouzet, Nicolas, Beck, Tracy. L
Detecting atmospheres around planets with a radius below 1.6 R$_{\oplus}$, commonly referred to as rocky planets (Rogers_2015, Rogers_2021), has proven to be challenging. However, rocky planets orbiting M-dwarfs are ideal candidates due to their favo
Externí odkaz:
http://arxiv.org/abs/2408.15855
Autor:
Banerjee, Agnibha, Barstow, Joanna K., Gressier, Amélie, Espinoza, Néstor, Sing, David K., Allen, Natalie H., Birkmann, Stephan M., Challener, Ryan C., Crouzet, Nicolas, Haswell, Carole A., Lewis, Nikole K., Lewis, Stephen R., Yang, Jingxuan
L 98-59 d is a Super-Earth planet orbiting an M-type star. We performed retrievals on the transmission spectrum of L 98-59 d obtained using NIRSpec G395H during a single transit, from JWST Cycle 1 GTO 1224. The wavelength range of this spectrum allow
Externí odkaz:
http://arxiv.org/abs/2408.15707
Autor:
Sing, David K., Rustamkulov, Zafar, Thorngren, Daniel P., Barstow, Joanna K., Tremblin, Pascal, de Oliveira, Catarina Alves, Beck, Tracy L., Birkmann, Stephan M., Challener, Ryan C., Crouzet, Nicolas, Espinoza, Néstor, Ferruit, Pierre, Giardino, Giovanna, Gressier, Amélie, Lee, Elspeth K. H., Lewis, Nikole K., Maiolino, Roberto, Manjavacas, Elena, Rauscher, Bernard J., Sirianni, Marco, Valenti, Jeff A.
Observations of transiting gas giant exoplanets have revealed a pervasive depletion of methane, which has only recently been identified atmospherically. The depletion is thought to be maintained by disequilibrium processes such as photochemistry or m
Externí odkaz:
http://arxiv.org/abs/2405.11027
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:
Edwards, Billy, Changeat, Quentin, Tsiaras, Angelos, Allan, Andrew, Behr, Patrick, Hagey, Simone R., Himes, Michael D., Ma, Sushuang, Stassun, Keivan G., Thomas, Luis, Thompson, Alexandra, Boley, Aaron, Booth, Luke, Bouwman, Jeroen, France, Kevin, Lowson, Nataliea, Meech, Annabella, Phillips, Caprice L., Vidotto, Aline A., Yip, Kai Hou, Bieger, Michelle, Gressier, Amelie, Janin, Estelle, Jiang, Ing-Guey, Leonardi, Pietro, Sarkar, Subhajit, Skaf, Nour, Taylor, Jake, Yang, Ming, Ward-Thompson, Derek
We present an atmospheric analysis of LTT 9779 b, a rare planet situated in the hot Neptune desert, that has been observed with HST WFC3 G102 and G141. The combined transmission spectrum, which covers 0.8 - 1.6 $\mu$m, shows a gradual increase in tra
Externí odkaz:
http://arxiv.org/abs/2306.13645
Autor:
Panek, Emilie, Beaulieu, Jean-Philippe, Drossart, Pierre, Venot, Olivia, Changeat, Quentin, Al-Refaie, Ahmed, Gressier, Amélie
Publikováno v:
A&A 677, A51 (2023)
Studying chemistry and chemical composition is fundamental to go back to formation history of planetary systems. We propose here to have another look at five targets to better determine their composition and the chemical mechanisms that take place in
Externí odkaz:
http://arxiv.org/abs/2306.10873