Zobrazeno 21 - 30
of 60
pro vyhledávání: '"Zhoujian Zhang"'
Autor:
Zhoujian Zhang, Michael C. Liu, Caroline V. Morley, Eugene A. Magnier, Michael A. Tucker, Zachary P. Vanderbosch, Aaron Do, Benjamin J. Shappee
We present the third discovery from the COol Companions ON Ultrawide orbiTS (COCONUTS) program, the COCONUTS-3 system, composed of a young M5 primary star UCAC4 374-046899 and a very red L6 dwarf WISEA J081322.19$-$152203.2. These two objects have a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fbdd00150de198b7ad0d4a417e988ac
http://arxiv.org/abs/2207.02865
http://arxiv.org/abs/2207.02865
Publikováno v:
Research Notes of the AAS. 7:2
We analyzed 20 s cadence Transiting Exoplanet Survey Satellite time-series photometry of the exoplanet host star HR 8799 collected in Sector 56. The amplitude spectrum shows Gamma Doradus (γ Dor) pulsations consistent with previous space-based photo
Autor:
Brittany E. Miles, Beth A. Biller, Polychronis Patapis, Kadin Worthen, Emily Rickman, Kielan K. W. Hoch, Andrew Skemer, Marshall D. Perrin, Niall Whiteford, Christine H. Chen, B. Sargent, Sagnick Mukherjee, Caroline V. Morley, Sarah E. Moran, Mickael Bonnefoy, Simon Petrus, Aarynn L. Carter, Elodie Choquet, Sasha Hinkley, Kimberly Ward-Duong, Jarron M. Leisenring, Maxwell A. Millar-Blanchaer, Laurent Pueyo, Shrishmoy Ray, Steph Sallum, Karl R. Stapelfeldt, Jordan M. Stone, Jason J. Wang, Olivier Absil, William O. Balmer, Anthony Boccaletti, Mariangela Bonavita, Mark Booth, Brendan P. Bowler, Gael Chauvin, Valentin Christiaens, Thayne Currie, Camilla Danielski, Jonathan J. Fortney, Julien H. Girard, Carol A. Grady, Alexandra Z. Greenbaum, Thomas Henning, Dean C. Hines, Markus Janson, Paul Kalas, Jens Kammerer, Grant M. Kennedy, Matthew A. Kenworthy, Pierre Kervella, Pierre-Olivier Lagage, Ben W. P. Lew, Michael C. Liu, Bruce Macintosh, Sebastian Marino, Mark S. Marley, Christian Marois, Elisabeth C. Matthews, Brenda C. Matthews, Dimitri Mawet, Michael W. McElwain, Stanimir Metchev, Michael R. Meyer, Paul Molliere, Eric Pantin, Andreas Quirrenbach, Isabel Rebollido, Bin B. Ren, Glenn Schneider, Malavika Vasist, Mark C. Wyatt, Yifan Zhou, Zackery W. Briesemeister, Marta L Bryan, Per Calissendorff, Faustine Cantalloube, Gabriele Cugno, Matthew De Furio, Trent J. Dupuy, Samuel M. Factor, Jacqueline K. Faherty, Michael P. Fitzgerald, Kyle Franson, Eileen C. Gonzales, Callie E. Hood, Alex R. Howe, Adam L. Kraus, Masayuki Kuzuhara, Anne-Marie Lagrange, Kellen Lawson, Cecilia Lazzoni, Pengyu Liu, Jorge Llop-Sayson, James P. Lloyd, Raquel A. Martinez, Johan Mazoyer, Sascha P. Quanz, Jea Adams Redai, Matthias Samland, Joshua E. Schlieder, Motohide Tamura, Xianyu Tan, Taichi Uyama, Arthur Vigan, Johanna M. Vos, Kevin Wagner, Schuyler G. Wolff, Marie Ygouf, Xi Zhang, Keming Zhang, Zhoujian Zhang
Publikováno v:
Miles, B E, Biller, B A, Patapis, P, Worthen, K, Rickman, E, Hoch, K K W, Skemer, A, Perrin, M D, Whiteford, N, Chen, C H, Mukherjee, S, Morley, C V, Moran, S E, Bonnefoy, M, Petrus, S, Carter, A L, Choquet, E, Hinkley, S, Ward-Duong, K, Leisenring, J M, Millar-Blanchaer, M A, Pueyo, L, Ray, S, Sallum, S, Stapelfeldt, K R, Stone, J M, Wang, J J, Absil, O, Balmer, W O, Boccaletti, A, Bonavita, M, Booth, M, Bowler, B P, Chauvin, G, Christiaens, V, Currie, T, Danielski, C, Fortney, J J, Girard, J H, Grady, C A, Greenbaum, A Z, Henning, T, Hines, D C, Janson, M, Kalas, P, Kammerer, J, Kennedy, G M, Kenworthy, M A, Kervella, P, Lagage, P-O, Lew, B W P, Liu, M C, Macintosh, B, Marino, S, Marley, M S, Marois, C, Matthews, E C, Matthews, B C, Mawet, D, McElwain, M W, Metchev, S, Meyer, M R, Molliere, P, Pantin, E, Quirrenbachm, A, Rebollido, I, Ren, B B, Schneider, G, Vasist, M, Wyatt, M C, Zhou, Y, Briesemeister, Z W, Bryan, M L, Calissendorff, P, Catalloube, F, Cugno, G, Furio, M D, Dupuy, T J, Factor, S M, Faherty, J K, Fitzgerald, M P, Franson, K, Gonzales, E C, Hood, C E, Howe, A R, Kraus, A L, Kuzuhara, M, Lagrange, A-M, Lawson, K, Lazzoni, C, Liu, P, Llop-Sayson, J, Lloyd, J P, Martinez, R A, Mazoyer, J, Quanz, S P, Redai, J A, Samland, M, Schlieder, J E, Tamura, M, Tan, X, Uyama, T, Vigan, A, Vos, J M, Wagner, K, Wolff, S G, Ygouf, M, Zhang, X & Zhang, K & Zhang, Z 2023, ' The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b ', Astrophysical Journal Letters, vol. 946, no. 1, L6, pp. 1-19 . https://doi.org/10.3847/2041-8213/acb04a
The Astrophysical journal letters
The Astrophysical journal letters, 2023, 946, ⟨10.3847/2041-8213/acb04a⟩
The Astrophysical journal letters
The Astrophysical journal letters, 2023, 946, ⟨10.3847/2041-8213/acb04a⟩
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a $
Comment: Accepted ApJL Iterations of spectra reduced by the ERS team are hosted at this link: https://github.com/bemiles/JWST_VHS1256b_Reduction/tree/
Comment: Accepted ApJL Iterations of spectra reduced by the ERS team are hosted at this link: https://github.com/bemiles/JWST_VHS1256b_Reduction/tree/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7224e8da235a9292b3fd7a2ec4c47f37
Autor:
Bhavana Lalchand, Wen-Ping Chen, Beth A. Biller, Loïc Albert, Katelyn Allers, Sophie Dubber, Zhoujian Zhang, Michael C. Liu, Jessy Jose, Belinda Damian, Tanvi Sharma, Mickaël Bonnefoy, Yumiko Oasa
We report the discovery of substellar objects in the young star cluster IC 348 and the neighboring Barnard 5 dark cloud, both at the eastern end of the Perseus star-forming complex. The substellar candidates are selected using narrowband imaging, i.e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af9bfeae4c797a1af97223d8379b08e7
Autor:
Zhoujian Zhang, Brendan P. Bowler, Trent J. Dupuy, Timothy D. Brandt, G. Mirek Brandt, William D. Cochran, Michael Endl, Phillip J. MacQueen, Kaitlin M. Kratter, Howard T. Isaacson, Kyle Franson, Adam L. Kraus, Caroline V. Morley, Yifan Zhou
We present the latest and most precise characterization of the architecture for the ancient ($\approx 11$ Gyr) Kepler-444 system, which is composed of a K0 primary star (Kepler-444 A) hosting five transiting planets, and a tight M-type spectroscopic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86e863027b8176146e9a21cf834a5c38
Spectroscopic characterization of imaged exoplanets and brown dwarfs is essential for understanding their atmospheres, formation, and evolution, but such work is challenged by the unavoidably simplified model atmospheres needed to interpret spectra.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdd43eb3bd98d1bff6b6eb4685239c9d
https://doi.org/10.5194/epsc2021-818
https://doi.org/10.5194/epsc2021-818
Autor:
Joseph A. Zalesky, Kezman Saboi, Michael R. Line, Zhoujian Zhang, Adam C. Schneider, Michael C. Liu, William M. J. Best, Mark S. Marley
Publikováno v:
The Astrophysical Journal. 936:44
The spectra of brown dwarfs are key to exploring the chemistry and physics that take place in their atmospheres. Late-T dwarf spectra are particularly diagnostic due to their relatively cloud-free atmospheres and deep molecular bands. With the use of
Autor:
Michael C. Liu, Wen Ping Chen, Zhoujian Zhang, Bhavana Lalchand, Tanvi Sharma, C. Fontanive, Katelyn N. Allers, Jessy Jose, Belinda Damian, Loic Albert, Beth Biller, Blake Pantoja, Sophie Dubber
Publikováno v:
Dubber, Sophie; Biller, Beth; Allers, Katelyn; Jose, Jessy; Albert, Loïc; Pantoja, Blake; Fontanive, Clémence; Liu, Michael; Zhang, Zhoujian; Chen, Wen-Ping; Lalchand, Bhavana; Damian, Belinda; Sharma, Tanvi (2021). A novel survey for young substellar objects with the W-band filter III: Searching for very low-mass brown dwarfs in Serpens South and Serpens Core. Monthly notices of the Royal Astronomical Society, 505(3), pp. 4215-4234. Oxford University Press 10.1093/mnras/stab1397
We present CFHT photometry and IRTF spectroscopy of low-mass candidate members of Serpens South and Serpens Core ($\sim$430 pc, $\sim$0.5 Myr), identified using a novel combination of photometric filters, known as the W-band method. We report SC18295
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd4c05ea073feedfe7e987cb7bb66a39
Autor:
Christoph Baranec, Maïssa Salama, Sean Goebel, Nicholas M. Law, Donald N. B. Hall, Brendan P. Bowler, Paul Barnes, Rebecca Jensen-Clem, Zhoujian Zhang, Shane Jacobson, Reed Riddle, Dmitry A. Duev, Charles Lockhart, James Ou, Mark Chun, Eric Warmbier, Michael C. Liu, Heather Situ, Morgan Bonnet
We present results from the Large Adaptive optics Survey for Substellar Objects (LASSO), where the goal is to directly image new substellar companions (11.8$), while only 23$^{+11}_{-6}$% of the remaining 22 stars with no detected companion have sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f81763c580005a3a510ac519ca1b4d13
We present a large forward-modeling analysis for 55 late-T (T7-T9) dwarfs, using low-resolution ($R\approx150$) near-infrared spectra and cloudless Sonora-Bobcat model atmospheres. We derive the objects' effective temperatures, surface gravities, met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::696e9574d440a40eab922530991d5bf8