Zobrazeno 1 - 10
of 269
pro vyhledávání: '"M. A. Whelan"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 6591-6598 (2023)
Solar radiation management through artificially increasing the amount of stratospheric sulfate aerosol is being considered as a possible climate engineering method. To overcome the challenge of transporting the necessary amount of sulfur to the strat
Externí odkaz:
https://doaj.org/article/32f4f4c07aba477b98c3f70ac94945ea
Autor:
Alexander P. Ji, Sanjana Curtis, Nicholas Storm, Vedant Chandra, Kevin C. Schlaufman, Keivan G. Stassun, Alexander Heger, Marco Pignatari, Adrian M. Price-Whelan, Maria Bergemann, Guy S. Stringfellow, Carla Fröhlich, Henrique Reggiani, Erika M. Holmbeck, Jamie Tayar, Shivani P. Shah, Emily J. Griffith, Chervin F. P. Laporte, Andrew R. Casey, Keith Hawkins, Danny Horta, William Cerny, Pierre Thibodeaux, Sam A. Usman, João A. S. Amarante, Rachael L. Beaton, Phillip A. Cargile, Cristina Chiappini, Charlie Conroy, Jennifer A. Johnson, Juna A. Kollmeier, Haining Li, Sarah Loebman, Georges Meynet, Dmitry Bizyaev, Joel R. Brownstein, Pramod Gupta, Sean Morrison, Kaike Pan, Solange V. Ramirez, Hans-Walter Rix, José Sánchez-Gallego
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 2, p L41 (2024)
Stars that formed with an initial mass of over 50 M _⊙ are very rare today, but they are thought to be more common in the early Universe. The fates of those early, metal-poor, massive stars are highly uncertain. Most are expected to directly collap
Externí odkaz:
https://doaj.org/article/cb019f1a53ca4e8bbf8ef53fff9533f7
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 170 (2024)
Reconstructing the mass assembly history of the Milky Way relies on obtaining detailed measurements of the properties of many stars in the galaxy, especially in the stellar halo. One of the most constraining quantities is stellar age, as it can shed
Externí odkaz:
https://doaj.org/article/114cd1e20c6548b2a4b23d023475363f
Autor:
Emily C. Cunningham, Jason A. S. Hunt, Adrian M. Price-Whelan, Kathryn V. Johnston, Melissa K. Ness, Yuxi (Lucy) Lu, Ivanna Escala, Ioana A. Stelea
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 95 (2024)
The stellar stream connected to the Sagittarius (Sgr) dwarf galaxy is the most massive tidal stream that has been mapped in the Galaxy, and is the dominant contributor to the outer stellar halo of the Milky Way (MW). We present metallicity maps of th
Externí odkaz:
https://doaj.org/article/88cd17b25ac3497ea0c88ac466f617a3
Autor:
Danny Horta, Adrian M. Price-Whelan, David W. Hogg, Kathryn V. Johnston, Lawrence Widrow, Julianne J. Dalcanton, Melissa K. Ness, Jason A. S. Hunt
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 165 (2024)
Under the assumption of a simple and time-invariant gravitational potential, many Galactic dynamics techniques infer the milky Way’s mass and dark matter distributions from stellar kinematic observations. These methods typically rely on parameteriz
Externí odkaz:
https://doaj.org/article/fc4c1d904b3c4e8489580edf98260966
Autor:
Christian Aganze, Sarah Pearson, Tjitske Starkenburg, Gabriella Contardo, Kathryn V. Johnston, Kiyan Tavangar, Adrian M. Price-Whelan, Adam J. Burgasser
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 151 (2024)
Stellar streams form through the tidal disruption of satellite galaxies or globular clusters orbiting a host galaxy. Globular cluster streams are exciting since they are thin (dynamically cold) and therefore sensitive to perturbations from low-mass s
Externí odkaz:
https://doaj.org/article/94d6be4a239d4fdcbb6d947494699ea6
Autor:
C. Abadie, F. Maignan, M. Remaud, J. Ogée, J. E. Campbell, M. E. Whelan, F. Kitz, F. M. Spielmann, G. Wohlfahrt, R. Wehr, W. Sun, N. Raoult, U. Seibt, D. Hauglustaine, S. T. Lennartz, S. Belviso, D. Montagne, P. Peylin
Publikováno v:
Biogeosciences, Vol 19, Pp 2427-2463 (2022)
Carbonyl sulfide (COS) is an atmospheric trace gas of interest for C cycle research because COS uptake by continental vegetation is strongly related to terrestrial gross primary productivity (GPP), the largest and most uncertain flux in atmospheric C
Externí odkaz:
https://doaj.org/article/ed41cb94ba394fd5b0a02708c66affc5
Autor:
L. M. J. Kooijmans, A. Cho, J. Ma, A. Kaushik, K. D. Haynes, I. Baker, I. T. Luijkx, M. Groenink, W. Peters, J. B. Miller, J. A. Berry, J. Ogée, L. K. Meredith, W. Sun, K.-M. Kohonen, T. Vesala, I. Mammarella, H. Chen, F. M. Spielmann, G. Wohlfahrt, M. Berkelhammer, M. E. Whelan, K. Maseyk, U. Seibt, R. Commane, R. Wehr, M. Krol
Publikováno v:
Biogeosciences, Vol 18, Pp 6547-6565 (2021)
The uptake of carbonyl sulfide (COS) by terrestrial plants is linked to photosynthetic uptake of CO2 as these gases partly share the same uptake pathway. Applying COS as a photosynthesis tracer in models requires an accurate representation of biosphe
Externí odkaz:
https://doaj.org/article/9d65b9f110044333ac01731ac91596c3
Autor:
F. Maignan, C. Abadie, M. Remaud, L. M. J. Kooijmans, K.-M. Kohonen, R. Commane, R. Wehr, J. E. Campbell, S. Belviso, S. A. Montzka, N. Raoult, U. Seibt, Y. P. Shiga, N. Vuichard, M. E. Whelan, P. Peylin
Publikováno v:
Biogeosciences, Vol 18, Pp 2917-2955 (2021)
Land surface modellers need measurable proxies to constrain the quantity of carbon dioxide (CO2) assimilated by continental plants through photosynthesis, known as gross primary production (GPP). Carbonyl sulfide (COS), which is taken up by leaves th
Externí odkaz:
https://doaj.org/article/54b5cdef9300492d8d567c6503727e09
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 1, p 74 (2023)
The recent discovery of a spiral pattern in the vertical kinematic structure in the solar neighborhood provides a prime opportunity to study nonequilibrium dynamics in the Milky Way from local stellar kinematics. Furthermore, results from simulations
Externí odkaz:
https://doaj.org/article/69e8a61d51614b56ae7dcdb79289fe0e