Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Chester, E."'
Efforts to spectrally characterize the atmospheric compositions of temperate terrestrial exoplanets orbiting M-dwarf stars with the James Webb Space Telescope (JWST) are now underway. Key molecular targets of such searches include O$_2$ and CO, which
Externí odkaz:
http://arxiv.org/abs/2307.08752
Autor:
Schwieterman, Edward W., Reinhard, Christopher T., Olson, Stephanie L., Ozaki, Kazumi, Harman, Chester E., Hong, Peng K., Lyons, Timothy W.
Publikováno v:
ApJ, 874, 9 (2019)
Some atmospheric gases have been proposed as counter indicators to the presence of life on an exoplanet if remotely detectable at sufficient abundance (i.e., antibiosignatures), informing the search for biosignatures and potentially fingerprinting un
Externí odkaz:
http://arxiv.org/abs/1903.07661
Autor:
Zemcov, Michael, Arcavi, Iair, Arendt, Richard G., Bachelet, Etienne, Beichman, Chas, Bock, James, Brandt, Pontus, Chary, Ranga Ram, Cooray, Asantha, Dragomir, Diana, Gorjian, Varoujan, Harman, Chester E., Henry, Richard Conn, Lisse, Carey, Lubin, Philip, Matsuura, Shuji, McNutt, Ralph, Murthy, Jayant, Poppe, Andrew R., Paul, Michael V., Reach, William T., Shvartzvald, Yossi, Street, R. A., Symons, Teresa, Werner, Michael
Astrophysical measurements away from the 1 AU orbit of Earth can enable several astrophysical science cases that are challenging or impossible to perform from Earthbound platforms, including: building a detailed understanding of the extragalactic bac
Externí odkaz:
http://arxiv.org/abs/1903.05729
Autor:
Schwieterman, Edward W., Reinhard, Christopher T., Olson, Stephanie L., Harman, Chester E., Lyons, Timothy W.
Publikováno v:
2019, ApJ, 878, 19
The habitable zone (HZ) is commonly defined as the range of distances from a host star within which liquid water, a key requirement for life, may exist on a planet's surface. Substantially more CO2 than present in Earth's modern atmosphere is require
Externí odkaz:
http://arxiv.org/abs/1902.04720
Autor:
Kopparapu, Ravi, Hebrard, Eric, Belikov, Rus, Batalha, Natalie M., Mulders, Gijs D., Stark, Chris, Teal, Dillon, Domagal-Goldman, Shawn, Gelino, Dawn, Mandell, Avi, Roberge, Aki, Rinehart, Stephen, Kane, Stephen R., Hasegawa, Yasuhiro, Henning, Wade, Hicks, Brian, Adibekyan, Vardan, Schwieterman, Edward W., Kohler, Erika, Teske, Johanna, Hinkel, Natalie, Nixon, Conor, France, Kevin, Danchi, William, Haqq-Misra, Jacob, Wolf, Eric T., Guzewich, Scott D., Charnay, Benjamin, Arney, Giada, Hartnett, Hilairy E., Lopez, Eric D., Minniti, Dante, Renaud, Joe, Airapetian, Vladimir, Dong, Chuanfei, Del Genio, Anthony D., Trainer, Melissa, Rau, Gioia, Jensen, Adam, Way, Michael, Lisse, Carey M., Lyra, Wladimir, Marchis, Franck, Jontof-Hutter, Daniel, Young, Patrick, Pierrehumbert, Ray, Harman, Chester E., Fortney, Jonathan, Moore, Bill, Beckwith, Steven, Shock, Everett, Desch, Steve, Mandt, Kathleen E., Izenberg, Noam, Ford, Eric B., Curry, Shannon, Scharf, Caleb, Anbar, Ariel
This whitepaper discusses the diversity of exoplanets that could be detected by future observations, so that comparative exoplanetology can be performed in the upcoming era of large space-based flagship missions. The primary focus will be on characte
Externí odkaz:
http://arxiv.org/abs/1803.03812
Autor:
Domagal-Goldman, Shawn, Kiang, Nancy Y., Parenteau, Niki, Catling, David C., DasSarma, Shiladitya, Fujii, Yuka, Harman, Chester E., Lenardic, Adrian, Pallé, Enric, Reinhard, Christopher T., Schwieterman, Edward W., Schneider, Jean, Smith, Harrison B., Tamura, Motohide, Angerhausen, Daniel, Arney, Giada, Airapetian, Vladimir S., Batalha, Natalie M., Cockell, Charles S., Cronin, Leroy, Deitrick, Russell, Del Genio, Anthony, Fisher, Theresa, Gelino, Dawn M., Grenfell, J. Lee, Hartnett, Hilairy E., Hegde, Siddharth, Hori, Yasunori, Kaçar, Betül, Krissansen-Totten, Joshua, Lyons, Timothy, Moore, William B., Narita, Norio, Olson, Stephanie L., Rauer, Heike, Robinson, Tyler D., Rugheimer, Sarah, Siegler, Nick, Shkolnik, Evgenya L., Stapelfeldt, Karl R., Walker, Sara
For the first time in human history, we will soon be able to apply the scientific method to the question "Are We Alone?" The rapid advance of exoplanet discovery, planetary systems science, and telescope technology will soon allow scientists to searc
Externí odkaz:
http://arxiv.org/abs/1801.06714
Autor:
Schwieterman, Edward W., Kiang, Nancy Y., Parenteau, Mary N., Harman, Chester E., DasSarma, Shiladitya, Fisher, Theresa M., Arney, Giada N., Hartnett, Hilairy E., Reinhard, Christopher T., Olson, Stephanie L., Meadows, Victoria S., Cockell, Charles S., Walker, Sara I., Grenfell, John Lee, Hegde, Siddharth, Rugheimer, Sarah, Hu, Renyu, Lyons, Timothy W.
Publikováno v:
Schwieterman et al. (2018). Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life. Astrobiology, 18(6), 663-708
In the coming years and decades, advanced space- and ground-based observatories will allow an unprecedented opportunity to probe the atmospheres and surfaces of potentially habitable exoplanets for signatures of life. Life on Earth, through its gaseo
Externí odkaz:
http://arxiv.org/abs/1705.05791
Autor:
Haqq-Misra, Jacob, Kopparapu, Ravi Kumar, Batalha, Natasha E., Harman, Chester E., Kasting, James F.
The liquid water habitable zone (HZ) describes the orbital distance at which a terrestrial planet can maintain above-freezing conditions through regulation by the carbonate-silicate cycle. Recent calculations have suggested that planets in the outer
Externí odkaz:
http://arxiv.org/abs/1605.07130
Autor:
Schwieterman, Edward W., Meadows, Victoria S., Domagal-Goldman, Shawn D., Deming, Drake, Arney, Giada N., Luger, Rodrigo, Harman, Chester E., Misra, Amit, Barnes, Rory
Publikováno v:
2016 ApJ 819 L13
O2 and O3 have been long considered the most robust individual biosignature gases in a planetary atmosphere, yet multiple mechanisms that may produce them in the absence of life have been described. However, these abiotic planetary mechanisms modify
Externí odkaz:
http://arxiv.org/abs/1602.05584
Autor:
Finn Jr., Chester E.1, McShane, Michael Q.2, Bailey, John3, Hess, Frederick M.4, Stevens, Katharine B.5, Jones, Diane Auer6, James, Kevin J.7, Kelly, Andrew P.8
Publikováno v:
AEI Paper & Studies. Jul/Aug2015, Vol. 11 Issue 7, preceding piii-84. 88p.