Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Renyu Hu"'
Publikováno v:
The Astrophysical Journal Letters, Vol 968, Iss 2, p L22 (2024)
LHS 1140 b is a small planet orbiting in the habitable zone of its M4.5V dwarf host. Recent mass and radius constraints have indicated that it has either a thick H _2 -rich atmosphere or substantial water by mass. Here we present a transmission spect
Externí odkaz:
https://doaj.org/article/3efaa7666be14f4a91beaf925b89187c
Publikováno v:
The Astrophysical Journal Letters, Vol 964, Iss 1, p L13 (2024)
Most, if not all, Sun-like stars host one or more planets, making multiplanetary systems commonplace in our Galaxy. We utilize hundreds of multiplanet simulations to explore the origin of such systems, focusing on their orbital architecture. The firs
Externí odkaz:
https://doaj.org/article/b81e4709d10f47718d7bfa56ae4f78a4
Autor:
Nicholas F. Wogan, Natasha E. Batalha, Kevin J. Zahnle, Joshua Krissansen-Totton, Shang-Min Tsai, Renyu Hu
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 1, p L7 (2024)
The James Webb Space Telescope (JWST) recently measured the transmission spectrum of K2-18b, a habitable-zone sub-Neptune exoplanet, detecting CH _4 and CO _2 in its atmosphere. The discovery paper argued the data are best explained by a habitable
Externí odkaz:
https://doaj.org/article/f288c8df6d044073a99b368616c97ad0
Autor:
Michael Zhang, Renyu Hu, Julie Inglis, Fei Dai, Jacob L. Bean, Heather A. Knutson, Kristine Lam, Elisa Goffo, Davide Gandolfi
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 2, p L44 (2024)
We present the mid-infrared (5–12 μ m) phase curve of GJ 367b observed by the Mid-Infrared Instrument on the James Webb Space Telescope (JWST). GJ 367b is a hot ( T _eq = 1370 K), extremely dense (10.2 ± 1.3 g cm ^−3 ) sub-Earth orbiting an M d
Externí odkaz:
https://doaj.org/article/11664dd2d56d488cbdedfe5fc670d58c
Autor:
Fei Dai, Andrew W. Howard, Samuel Halverson, Jaume Orell-Miquel, Enric Pallé, Howard Isaacson, Benjamin Fulton, Ellen M. Price, Mykhaylo Plotnykov, Leslie A. Rogers, Diana Valencia, Kimberly Paragas, Michael Greklek-McKeon, Jonathan Gomez Barrientos, Heather A. Knutson, Erik A. Petigura, Lauren M. Weiss, Rena Lee, Casey L. Brinkman, Daniel Huber, Gumundur Stefánsson, Kento Masuda, Steven Giacalone, Cicero X. Lu, Edwin S. Kite, Renyu Hu, Eric Gaidos, Michael Zhang, Ryan A. Rubenzahl, Joshua N. Winn, Te Han, Corey Beard, Rae Holcomb, Aaron Householder, Gregory J. Gilbert, Jack Lubin, J. M. Joel Ong, Alex S. Polanski, Nicholas Saunders, Judah Van Zandt, Samuel W. Yee, Jingwen Zhang, Jon Zink, Bradford Holden, Ashley Baker, Max Brodheim, Ian J. M. Crossfield, William Deich, Jerry Edelstein, Steven R. Gibson, Grant M. Hill, Sharon R Jelinsky, Marc Kassis, Russ R. Laher, Kyle Lanclos, Scott Lilley, Joel N. Payne, Kodi Rider, Paul Robertson, Arpita Roy, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Chris Smith, Adam Vandenberg, Josh Walawender, Sharon X. Wang, Shin-Ywan (Cindy) Wang, Edward Wishnow, Jason T. Wright, Sherry Yeh, José A. Caballero, Juan C. Morales, Felipe Murgas, Evangelos Nagel, Ansgar Reiners, Andreas Schweitzer, Hugo M. Tabernero, Mathias Zechmeister, Alton Spencer, David R. Ciardi, Catherine A. Clark, Michael B. Lund, Douglas A. Caldwell, Karen A. Collins, Richard P. Schwarz, Khalid Barkaoui, Cristilyn Watkins, Avi Shporer, Norio Narita, Akihiko Fukui, Gregor Srdoc, David W. Latham, Jon M. Jenkins, George R. Ricker, Sara Seager, Roland Vanderspek
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 101 (2024)
TOI-6255 b (GJ 4256) is an Earth-sized planet (1.079 ± 0.065 R _⊕ ) with an orbital period of only 5.7 hr. With the newly commissioned Keck Planet Finder and CARMENES spectrographs, we determine the planet’s mass to be 1.44 ± 0.14 M _⊕ . The
Externí odkaz:
https://doaj.org/article/0984db33703e4dd29fc69e546aaae69a
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 2, p 139 (2024)
We simulate atmospheric fractionation in escaping planetary atmospheres using IsoFATE , a new open-source numerical model. We expand the parameter space studied previously to planets with tenuous atmospheres that exhibit the greatest helium and deute
Externí odkaz:
https://doaj.org/article/6f615d5eabc6473c8de59d3fe5193286
Autor:
Jeehyun Yang, Renyu Hu
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 189 (2024)
With the advent of JWST and the spectroscopic characterization of exoplanet atmospheres in unprecedented detail, there is a demand for more complete pictures of chemical and photochemical reactions and their impacts on atmospheric composition. Tradit
Externí odkaz:
https://doaj.org/article/a94afadcfcb8436c84faafbce3ee2f1e
Autor:
Xintong Lyu, Daniel D. B. Koll, Nicolas B. Cowan, Renyu Hu, Laura Kreidberg, Brian E. J. Rose
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 152 (2024)
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 night-sides, with extreme irradiation on the dayside and none on the nightside. Ho
Externí odkaz:
https://doaj.org/article/8e64b61fd7a24b0ebf463ee06303a51e
The Importance of the Upper Atmosphere to CO/O2 Runaway on Habitable Planets Orbiting Low-mass Stars
Publikováno v:
The Astrophysical Journal Letters, Vol 958, Iss 1, p L15 (2023)
Efforts to spectrally characterize the atmospheric compositions of temperate terrestrial exoplanets orbiting M dwarf stars with JWST are now underway. Key molecular targets of such searches include O _2 and CO, which are potential indicators of life.
Externí odkaz:
https://doaj.org/article/24c45b1d390f480694c37b4102e840c4
Autor:
Emma Esparza-Borges, Mercedes López-Morales, Jéa I. Adams Redai, Enric Pallé, James Kirk, Núria Casasayas-Barris, Natasha E. Batalha, Benjamin V. Rackham, Jacob L. Bean, S. L. Casewell, Leen Decin, Leonardo A. Dos Santos, Antonio García Muñoz, Joseph Harrington, Kevin Heng, Renyu Hu, Luigi Mancini, Karan Molaverdikhani, Giuseppe Morello, Nikolay K. Nikolov, Matthew C. Nixon, Seth Redfield, Kevin B. Stevenson, Hannah R. Wakeford, Munazza K. Alam, Björn Benneke, Jasmina Blecic, Nicolas Crouzet, Tansu Daylan, Julie Inglis, Laura Kreidberg, Dominique J. M. Petit dit de la Roche, Jake D. Turner
Publikováno v:
The Astrophysical Journal Letters, Vol 955, Iss 1, p L19 (2023)
Carbon monoxide was recently reported in the atmosphere of the hot Jupiter WASP-39b using the NIRSpec PRISM transit observation of this planet, collected as part of the JWST Transiting Exoplanet Community Early Release Science Program. This detection
Externí odkaz:
https://doaj.org/article/3951a281da41433a817579495dad426e