Zobrazeno 1 - 10
of 631
pro vyhledávání: '"J. Wilner"'
Publikováno v:
Annals of Glaciology, Vol 58, Pp 1-11 (2017)
We collected ~1300 km of ground-penetrating radar profiles over McMurdo Ice Shelf, Antarctica, using frequencies between 40 and 400 MHz to determine extent, continuity and depth to the brine. We also used profiles to determine meteoric ice thickness
Externí odkaz:
https://doaj.org/article/b73eb71b27754353b9082ea3884e1156
Autor:
Kristina Monsch, Joshua Bennett Lovell, Ciprian T. Berghea, Gordian Edenhofer, Garrett K. Keating, Sean M. Andrews, Ammar Bayyari, Jeremy J. Drake, David J. Wilner
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 1, p L2 (2024)
We present resolved images of IRAS 23077+6707 (“Dracula’s Chivito”) in 1.3 mm/225 GHz thermal dust and CO gas emission with the Submillimeter Array (SMA) and optical (0.5–0.8 μ m) scattered light with the Panoramic Survey Telescope and Rapid
Externí odkaz:
https://doaj.org/article/e0db5de669374ec19daba69974aee62f
Autor:
Joshua Bennett Lovell, Garrett K. Keating, David J. Wilner, Sean M. Andrews, Meredith MacGregor, Ramisa Akther Rahman, Ramprasad Rao, Jonathan P. Williams
Publikováno v:
The Astrophysical Journal Letters, Vol 962, Iss 1, p L12 (2024)
We present evidence of variable 1.3 mm emission from the 1 to 3 Myr, spectral-type G2–G5 class III young stellar object (YSO), HD 283572. HD 283572 was observed on eight dates with the Submillimeter Array between 2021 December and 2023 May, with a
Externí odkaz:
https://doaj.org/article/6ee75a981d9f4f048f50e2768229df96
Autor:
Briley L. Lewis, Michael P. Fitzgerald, Thomas M. Esposito, Pauline Arriaga, Ronald López, Katie A. Crotts, Gaspard Duchêne, Katherine B. Follette, Justin Hom, Paul Kalas, Brenda C. Matthews, Maxwell Millar-Blanchaer, David J. Wilner, Johan Mazoyer, Bruce Macintosh
Publikováno v:
The Astronomical Journal, Vol 168, Iss 4, p 142 (2024)
The 16 Myr old A0V star HD 156623 in the Scorpius–Centaurus association hosts a high-fractional-luminosity debris disk, recently resolved in scattered light for the first time by the Gemini Planet Imager (GPI) in polarized intensity only. We presen
Externí odkaz:
https://doaj.org/article/0fa81916c52849fba7b5e447e8486714
Autor:
Adolfo S. Carvalho, Laura M. Pérez, Anibal Sierra, Maria Jesus Mellado, Lynne A. Hillenbrand, Sean Andrews, Myriam Benisty, Tilman Birnstiel, John M. Carpenter, Viviana V. Guzmán, Jane Huang, Andrea Isella, Nicolas Kurtovic, Luca Ricci, David J. Wilner
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 129 (2024)
Rings and gaps are among the most widely observed forms of substructure in protoplanetary disks. A gap–ring pair may be formed when a planet carves a gap in the disk, which produces a local pressure maximum following the gap that traps inwardly dri
Externí odkaz:
https://doaj.org/article/82ef11b386fc43d7ae1299a0c8530428
Autor:
Joel H. Kastner, David J. Wilner, Paula Moraga Baez, Jesse Bublitz, Orsola De Marco, Raghvendra Sahai, Al Wootten
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 21 (2024)
We present Submillimeter Array (SMA) mapping of ^12 CO J = 2 → 1, ^13 CO J = 2 → 1, and CN N = 2 → 1 emission from the ring-like planetary nebula NGC 3132, one of the subjects of JWST Early Release Observation near-infrared imaging. The ∼5″
Externí odkaz:
https://doaj.org/article/aedd74d3c0b942468f80f75dfc3d560e
Autor:
Carlos E. Romero-Mirza, Karin I. Öberg, Andrea Banzatti, Klaus M. Pontoppidan, Sean M. Andrews, David J. Wilner, Edwin A. Bergin, Ian Czekala, Charles J. Law, Colette Salyk, Richard Teague, Chunhua Qi, Jennifer B. Bergner, Jane Huang, Catherine Walsh, Viviana V. Guzmán, L. Ilsedore Cleeves, Yuri Aikawa, Jaehan Bae, Alice S. Booth, Gianni Cataldi, John D. Ilee, Romane Le Gal, Feng Long, Ryan A. Loomis, François Menard, Yao Liu
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 36 (2024)
We present MIRI Medium-resolution Spectrograph observations of the large, multi-gapped protoplanetary disk around the T Tauri star AS 209. The observations reveal hundreds of water vapor lines from 4.9–25.5 μ m toward the inner ∼1 au in the disk
Externí odkaz:
https://doaj.org/article/9220f739430b4e5eb0ee6051337d1018
Autor:
Katie A. Crotts, Brenda C. Matthews, Gaspard Duchêne, Thomas M. Esposito, Ruobing Dong, Justin Hom, Rebecca Oppenheimer, Malena Rice, Schuyler G. Wolff, Christine H. Chen, Clarissa R. Do Ó, Paul Kalas, Briley L. Lewis, Alycia J. Weinberger, David J. Wilner, Mark Ammons, Pauline Arriaga, Robert J. De Rosa, John H. Debes, Michael P. Fitzgerald, Eileen C. Gonzales, Dean C. Hines, Sasha Hinkley, A. Meredith Hughes, Ludmilla Kolokolova, Eve J. Lee, Ronald A. López, Bruce Macintosh, Johan Mazoyer, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Jenny Patience, Marshall D. Perrin, Laurent Pueyo, Fredrik T. Rantakyrö, Bin B. Ren, Glenn Schneider, Remi Soummer, Christopher C. Stark
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 245 (2024)
The Gemini Planet Imager (GPI) has excelled in imaging debris disks in the near-infrared. The GPI Exoplanet Survey imaged 24 debris disks in polarized H -band light, while other programs observed half of these disks in polarized J and/or K 1 bands. U
Externí odkaz:
https://doaj.org/article/e4ad87d52f6e4c41893bf52d6cdb7a30
Autor:
Jennifer B. Bergner, Yancy L. Shirley, Jes K. Jørgensen, Brett McGuire, Susanne Aalto, Carrie M. Anderson, Gordon Chin, Maryvonne Gerin, Paul Hartogh, Daewook Kim, David Leisawitz, Joan Najita, Kamber R. Schwarz, Alexander G. G. M. Tielens, Christopher K. Walker, David J. Wilner, Edward J. Wollack
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2022)
Chemistry along the star- and planet-formation sequence regulates how prebiotic building blocks—carriers of the elements CHNOPS—are incorporated into nascent planetesimals and planets. Spectral line observations across the electromagnetic spectru
Externí odkaz:
https://doaj.org/article/d51b8b899af04a7f8f8a1cb73e80ef22
Autor:
Jenny K. Calahan, Edwin A. Bergin, Arthur D. Bosman, Evan A. Rich, Sean M. Andrews, Jennifer B. Bergner, L. Ilsedore Cleeves, Viviana V. Guzmán, Jane Huang, John D. Ilee, Charles J. Law, Romane Le Gal, Karin I. Öberg, Richard Teague, Catherine Walsh, David J. Wilner, Ke Zhang
Publikováno v:
Nature Astronomy. 7:49-56