Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Koskinen, Tommi"'
Autor:
Egan, Arika, France, Kevin, Sreejith, Aickara Gopinathan, Fossati, Luca, Koskinen, Tommi, Fleming, Brian, Nell, Nicholas, Suresh, Ambily, Cauley, P. Wilson, Desert, Jean-Michele, Petit, Pascal, Vidotto, Aline A.
We present new near-ultraviolet (NUV, $\lambda$ = 2479 $-$ 3306 $\r{A}$) transmission spectroscopy of KELT-9b, the hottest known exoplanet, obtained with the Colorado Ultraviolet Transit Experiment ($CUTE$) CubeSat. Two transits were observed on Sept
Externí odkaz:
http://arxiv.org/abs/2407.13656
We analyze data from the final two years of the Cassini mission to retrieve the distributions of methane, ethane, acetylene, ethylene, and benzene in Saturn's upper stratosphere and mesosphere from stellar occultations observed by the Ultraviolet Ima
Externí odkaz:
http://arxiv.org/abs/2405.01763
Autor:
Sreejith, A. G., France, Kevin, Fossati, Luca, Koskinen, Tommi T., Egan, Arika, Cauley, P. Wilson, Cubillos, Patricio. E., Ambily, S., Huang, Chenliang, Lavvas, 5 Panayotis, Fleming, Brian T., Desert, Jean-Michel, Nell, Nicholas, Petit, Pascal, Vidotto, Aline
Ultraviolet observations of Ultra-hot Jupiters (UHJs), exoplanets with temperatures over 2000\,K, provide us with an opportunity to investigate if and how atmospheric escape shapes their upper atmosphere. Near-ultraviolet transit spectroscopy offers
Externí odkaz:
http://arxiv.org/abs/2308.05726
Autor:
Steinrueck, Maria E., Koskinen, Tommi, Lavvas, Panayotis, Parmentier, Vivien, Zieba, Sebastian, Tan, Xianyu, Zhang, Xi, Kreidberg, Laura
Photochemical hazes are expected to form in hot Jupiter atmospheres and may explain the strong scattering slopes and muted spectral features observed in the transmission spectra of many hot Jupiters. Absorption and scattering by photochemical hazes h
Externí odkaz:
http://arxiv.org/abs/2305.09654
Autor:
Fleming, Brian T., France, Kevin C., Nell, Nicholas, Kohnert, Richard A., Hoadley, Keri, Petit, Pascal M., Vidotto, Aline A., Beasley, Matthew, Fossati, Luca, Koskinen, Tommi T., Desert, Jean-Michel, Pool, Kelsey, Egan, Arika
The Colorado Ultraviolet Transit Experiment (CUTE) is a near-UV (2550 - 3300 angstrom) 6U cubesat mission designed to monitor transiting hot Jupiters to quantify their atmospheric mass loss and magnetic fields. CUTE will probe both atomic (Mg and Fe)
Externí odkaz:
http://hdl.handle.net/10150/626499
http://arizona.openrepository.com/arizona/handle/10150/626499
http://arizona.openrepository.com/arizona/handle/10150/626499
In the near-UV and optical transmission spectrum of the hot Jupiter WASP-121b, recent observations have detected strong absorption features of Mg, Fe, Ca, and H$\alpha$, extending outside of the planet's Roche lobe. Studying these atomic signatures c
Externí odkaz:
http://arxiv.org/abs/2304.07352
Autor:
Cubillos, Patricio E., Fossati, Luca, Koskinen, Tommi, Huang, Chenliang, Sreejith, A. G., France, Kevin, Cauley, P. Wilson, Haswell, Carole A.
Publikováno v:
A&A 671, A170 (2023)
The benchmark hot Jupiter HD 189733b has been a key target to lay out the foundations of comparative planetology for giant exoplanets. As such, HD 189733b has been extensively studied across the electromagnetic spectrum. Here, we report the observati
Externí odkaz:
http://arxiv.org/abs/2301.13025
Autor:
France, Kevin, Fleming, Brian, Egan, Arika, Desert, Jean-Michel, Fossati, Luca, Koskinen, Tommi T., Nell, Nicholas, Petit, Pascal, Vidotto, Aline A., Beasley, Matthew, DeCicco, Nicholas, Sreejith, Aickara Gopinathan, Suresh, Ambily, Baumert, Jared, Cauley, P. Wilson, DAngelo, Carolina Villarreal, Hoadley, Keri, Kane, Robert, Kohnert, Richard, Lambert, Julian, Ulrich, Stefan
Atmospheric escape is a fundamental process that affects the structure, composition, and evolution of many planets. The signatures of escape are detectable on close-in, gaseous exoplanets orbiting bright stars, owing to the high levels of extreme-ult
Externí odkaz:
http://arxiv.org/abs/2301.02250
Autor:
Moses, Julianne I., Brown, Zarah L., Koskinen, Tommi T., Fletcher, Leigh N., Serigano, Joseph, Guerlet, Sandrine, Moore, Luke, Waite Jr., J. Hunter, Ben-Jaffel, Lotfi, Galand, Marina, Chadney, Joshua M., Hörst, Sarah M., Sinclair, James A., Vuitton, Veronique, Müller-Wodarg, Ingo
During the Grand Finale stage of the Cassini mission, organic-rich ring material was discovered to be flowing into Saturn's equatorial upper atmosphere at a surprisingly large rate. Through a series of photochemical models, we have examined the conse
Externí odkaz:
http://arxiv.org/abs/2211.05253
Autor:
Bergsten, Galen J., Pascucci, Ilaria, Mulders, Gijs D., Fernandes, Rachel B., Koskinen, Tommi T.
Understanding the occurrence of Earth-sized planets in the habitable zone of Sun-like stars is essential to the search for Earth analogues. Yet a lack of reliable Kepler detections for such planets has forced many estimates to be derived from the clo
Externí odkaz:
http://arxiv.org/abs/2209.04047