Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Daniel, D B"'
White dwarfs offer a unique opportunity to search nearby stellar systems for signs of life, but the habitable zone around these stars is still poorly understood. Since white dwarfs are compact stars with low luminosity, any planets in their habitable
Externí odkaz:
http://arxiv.org/abs/2406.03189
Autor:
Gillon, Michaël, Pedersen, Peter P., Rackham, Benjamin V., Dransfield, Georgina, Ducrot, Elsa, Barkaoui, Khalid, Burdanov, Artem Y., Schroffenegger, Urs, Chew, Yilen Gómez Maqueo, Lederer, Susan M., Alonso, Roi, Burgasser, Adam J., Howell, Steve B., Narita, Norio, de Wit, Julien, Demory, Brice-Olivier, Queloz, Didier, Triaud, Amaury H. M. J., Delrez, Laetitia, Jehin, Emmanuël, Hooton, Matthew J., Garcia, Lionel J., Muñoz, Clàudia Jano, Murray, Catriona A., Pozuelos, Francisco J., Sebastian, Daniel, Timmermans, Mathilde, Thompson, Samantha J., Aceituno, Jesús, Aganze, Christian, Amado, Pedro J., Baycroft, Thomas, Benkhaldoun, Zouhair, Berardo, David, Bolmont, Emeline, Clark, Catherine A., Davis, Yasmin T., Davoudi, Fatemeh, de Beurs, Zoë L., de Leon, Jerome P., Ikoma, Masahiro, Ikuta, Kai, Isogai, Keisuke, Fukuda, Izuru, Fukui, Akihiko, Gerasimov, Roman, Ghachoui, Mourad, Günther, Maximilian N., Hasler, Samantha, Hayashi, Yuya, Heng, Kevin, Hu, Renyu, Kagetani, Taiki, Kawai, Yugo, Kawauchi, Kiyoe, Kitzmann, Daniel, Koll, Daniel D. B., Lendl, Monika, Livingston, John H., Lyu, Xintong, Valdés, Erik A. Meier, Mori, Mayuko, McCormac, James J., Murgas, Felipe, Niraula, Prajwal, Pallé, Enric, Plauchu-Frayn, Ilse, Rebolo, Rafael, Sabin, Laurence, Schackey, Yannick, Schanche, Nicole, Selsis, Franck, Sota, Alfredo, Stalport, Manu, Standing, Matthew R., Stassun, Keivan G., Tamura, Motohide, Theissen, Christopher A., Turbet, Martin, Van Grootel, Valérie, Varas, Roberto, Watanabe, Noriharu, Lang, Francis Zong
Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary population largely unexplored, and only one of them, TRAPPIST-1, has so
Externí odkaz:
http://arxiv.org/abs/2406.00794
Autor:
Lyu, Xintong, Koll, Daniel D. B., Cowan, Nicolas B., Hu, Renyu, Kreidberg, Laura, Rose, Brain E. J.
Short period exoplanets on circular orbits are thought to be tidally locked into synchronous rotation. If tidally locked, these planets must possess permanent day- and nightsides, with extreme irradiation on the dayside and none on the nightside. How
Externí odkaz:
http://arxiv.org/abs/2310.01725
Autor:
Lincowski, Andrew P., Meadows, Victoria S., Zieba, Sebastian, Kreidberg, Laura, Morley, Caroline, Gillon, Michaël, Selsis, Franck, Agol, Eric, Bolmont, Emeline, Ducrot, Elsa, Hu, Renyu, Koll, Daniel D. B., Lyu, Xintong, Mandell, Avi, Suissa, Gabrielle, Tamburo, Patrick
The first JWST observations of TRAPPIST-1 c showed a secondary eclipse depth of 421+/-94 ppm at 15 um, which is consistent with a bare rock surface or a thin, O2-dominated, low CO2 atmosphere (Zieba et al. 2023). Here, we further explore potential at
Externí odkaz:
http://arxiv.org/abs/2308.05899
Autor:
Zieba, Sebastian, Kreidberg, Laura, Ducrot, Elsa, Gillon, Michaël, Morley, Caroline, Schaefer, Laura, Tamburo, Patrick, Koll, Daniel D. B., Lyu, Xintong, Acuña, Lorena, Agol, Eric, Iyer, Aishwarya R., Hu, Renyu, Lincowski, Andrew P., Meadows, Victoria S., Selsis, Franck, Bolmont, Emeline, Mandell, Avi M., Suissa, Gabrielle
Seven rocky planets orbit the nearby dwarf star TRAPPIST-1, providing a unique opportunity to search for atmospheres on small planets outside the Solar System (Gillon et al., 2017). Thanks to the recent launch of JWST, possible atmospheric constituen
Externí odkaz:
http://arxiv.org/abs/2306.10150
Autor:
Whittaker, Emily A., Malik, Matej, Ih, Jegug, Kempton, Eliza M. -R., Mansfield, Megan, Bean, Jacob L., Kite, Edwin S., Koll, Daniel D. B., Cronin, Timothy W., Hu, Renyu
The spectroscopic characterization of terrestrial exoplanets will be made possible for the first time with JWST. One challenge to characterizing such planets is that it is not known a priori whether they possess optically thick atmospheres or even an
Externí odkaz:
http://arxiv.org/abs/2207.08889
Autor:
Yue Xu, Daniel D. B. Koll
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 9, Pp n/a-n/a (2024)
Abstract CO2 absorbs and emits radiation, which allows it to act both as radiative forcing and feedback. Recent work has shown CO2’s feedback effect becomes dominant in hothouse climates, giving rise to a non‐monotonic climate sensitivity around
Externí odkaz:
https://doaj.org/article/3814af37cbc34662a180da1af2876593
Autor:
Ranjan, Sukrit, Seager, Sara, Zhan, Zhuchang, Koll, Daniel D. B., Bains, William, Petkowski, Janusz J., Huang, Jingcheng, Lin, Zifan
About 2.5 billion years ago, microbes learned to harness plentiful solar energy to reduce CO$_2$ with H$_2$O, extracting energy and producing O$_2$ as waste. O$_2$ production from this metabolic process was so vigorous that it saturated its photochem
Externí odkaz:
http://arxiv.org/abs/2201.08359
Autor:
Yang, Jun, Leconte, Jeremy, Wolf, Eric T., Merlis, Timonthy, Koll, Daniel D. B., Forget, Francois, Abbot, Dorian S.
Publikováno v:
The Astrophysical Journal 2019
Robustly modeling the inner edge of the habitable zone is essential for determining the most promising potentially habitable exoplanets for atmospheric characterization. Global climate models (GCMs) have become the standard tool for calculating this
Externí odkaz:
http://arxiv.org/abs/1912.11329
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