Zobrazeno 1 - 10
of 1 683
pro vyhledávání: '"Burgasser, A"'
Autor:
Albert, Loïc, Leggett, Sandy K., Calissendorff, Per, Vandal, Thomas, Kirkpatrick, J. Davy, Gagliuffi, Daniella C. Bardalez, De Furio, Matthew, Meyer, Michael, Beichman, Charles A., Burgasser, Adam J., Cushing, Michael C., Faherty, Jacqueline Kelly, Fontanive, Clémence, Gelino, Christopher R., Gizis, John E., Greenbaum, Alexandra Z., Martinache, Frantz, N'Diaye, Mamadou, Pope, Benjamin J. S., Roellig, Thomas L., Sahlmann, Johannes, Sivaramakrishnan, Anand, Ygouf, Marie
Brown dwarfs lack nuclear fusion and cool with time; the coldest known have an effective temperature below 500 K, and are known as Y dwarfs. We present a James Webb Space Telescope (JWST) photometric dataset of Y dwarfs: twenty-three were imaged in w
Externí odkaz:
http://arxiv.org/abs/2501.14100
Autor:
Bedin, L. R., Libralato, M., Salaris, M., Nardiello, D., Scalco, M., Griggio, M., Anderson, J., Bergeron, P., Bellini, A., Gerasimov, R., Burgasser, A. J., Apai, D.
We combine infrared (IR) observations collected by the James Webb Space Telescope with optical deep images by the Hubble Space Telescope taken approximately 20 years earlier to compute proper-motion membership for the globular cluster (GC) M 4 (NGC 6
Externí odkaz:
http://arxiv.org/abs/2501.10070
Autor:
Scalco, M., Gerasimov, R., Bedin, L. R., Vesperini, E., Correnti, M., Nardiello, D., Burgasser, A., Richer, H., Caiazzo, I., Heyl, J., Libralato, M., Anderson, J., Griggio, M.
Using JWST Near Infrared Camera (NIRCam) images of the globular cluster 47 Tucanae (or NGC 104), taken at two epochs just 7 months apart, we derived proper-motion membership down to $m_{\rm F322W2} \sim 27$. We identified an intriguing feature at the
Externí odkaz:
http://arxiv.org/abs/2501.04446
Autor:
Cifuentes, C., Caballero, J. A., González-Payo, J., Amado, P. J., Béjar, V. J. S., Burgasser, A. J., Cortés-Contreras, M., Lodieu, N., Montes, D., Quirrenbach, A., Reiners, A., Ribas, I., Sanz-Forcada, J., Seifert, W., Osorio, M. R. Zapatero
Multiplicity studies greatly benefit from focusing on M dwarfs because they are often paired in a variety of configurations with both stellar and substellar objects, including exoplanets. We aim to address the observed multiplicity of M dwarfs by con
Externí odkaz:
http://arxiv.org/abs/2412.12264
We investigate the stellar metallicity ([Fe/H] and [M/H]) dependence of giant planets around M dwarfs by comparing the metallicity distribution of 746 field M dwarfs without known giant planets with a sample of 22 M dwarfs hosting confirmed giant pla
Externí odkaz:
http://arxiv.org/abs/2412.06137
Autor:
Mamajek, Eric E., Burgasser, Adam J.
The L9 dwarf SDSS J100711.74+193056.2 is situated 7$^{\circ}$.5 north of the nearest B-type star Regulus (d = 24.3+-0.2 pc), part of a stellar quadruplet. The object is at similar distance (d = 21.9+-1.0 pc) as Regulus, with a 3D separation of 3.9+0.
Externí odkaz:
http://arxiv.org/abs/2412.04599
Autor:
Bravo, Alexia, Schneider, Adam C., Casewell, Sarah, Rothermich, Austin, Faherty, Jacqueline K., French, Jenni R., Bickle, Thomas P., Meisner, Aaron M., Kirkpatrick, J. Davy, Kuchner, Marc J., Burgasser, Adam J., Marocco, Federico, Debes, John H., Sainio, Arttu, Gramaize, Léopold, Kiwy, Frank, Jalowiczor, Peter A., Abdullahi, Awab
We conducted a search for new ultracool companions to nearby white dwarfs using multiple methods, including the analysis of colors and examination of images in both the optical and the infrared. Through this process, we identified fifty-one previousl
Externí odkaz:
http://arxiv.org/abs/2412.04597
Autor:
Zhuang, Ming-Yang, Wang, Feige, Sun, Fengwu, Shen, Yue, Li, Junyao, Burgasser, Adam J., Fan, Xiaohui, Greene, Jenny E., Narayan, Gautham, Shapley, Alice E., Yang, Qian
We present the Early Data Release of the Multi-Cycle JWST-NEXUS Treasury program (2024-2028), which includes NIRCam imaging and WFSS observations from the first (partial) NEXUS-Wide epoch covering the central 100 ${\rm arcmin^2}$ of the NEXUS field,
Externí odkaz:
http://arxiv.org/abs/2411.06372
Autor:
Burgasser, Adam J., Schneider, Adam C., Meisner, Aaron M., Caselden, Dan, Hsu, Chih-Chun, Gerasimov, Roman, Aganze, Christian, Softich, Emma, Karpoor, Preethi, Theissen, Christopher A., Brooks, Hunter, Bickle, Thomas P., Gagné, Jonathan, Artigau, Étienne, Marsset, Michaël, Rothermich, Austin, Faherty, Jacqueline K., Kirkpatrick, J. Davy, Kuchner, Marc J., Andersen, Nikolaj Stevnbak, Beaulieu, Paul, Colin, Guillaume, Gantier, Jean Marc, Gramaize, Leopold, Hamlet, Les, Hinckley, Ken, Kabatnik, Martin, Kiwy, Frank, Martin, David W., Massat, Diego H., Pendrill, William, Sainio, Arttu, Schümann, Jörg, Thévenot, Melina, Walla, Jim, Wędracki, Zbigniew, Worlds, the Backyard, Collaboration, Planet 9
We report the results of a spectroscopic survey of candidate T subdwarfs identified by the Backyard Worlds: Planet 9 program. Near-infrared spectra of 31 sources with red $J-W2$ colors and large $J$-band reduced proper motions show varying signatures
Externí odkaz:
http://arxiv.org/abs/2411.01378
Autor:
Xuan, Jerry W., Mérand, A., Thompson, W., Zhang, Y., Lacour, S., Blakely, D., Mawet, D., Oppenheimer, R., Kammerer, J., Batygin, K., Sanghi, A., Wang, J., Ruffio, J. -B., Liu, M. C., Knutson, H., Brandner, W., Burgasser, A., Rickman, E., Bowens-Rubin, R., Salama, M., Balmer, W., Blunt, S., Bourdarot, G., Caselli, P., Chauvin, G., Davies, R., Drescher, A., Eckart, A., Eisenhauer, F., Fabricius, M., Feuchtgruber, H., Finger, G., Schreiber, N. M. Förster, Garcia, P., Genzel, R., Gillessen, S., Grant, S., Hartl, M., Haußmann, F., Henning, T., Hinkley, S., Hönig, S. F., Horrobin, M., Houllé, M., Janson, M., Kervella, P., Kral, Q., Kreidberg, L., Bouquin, J. -B. Le, Lutz, D., Mang, F., Marleau, G. -D., Millour, F., More, N., Nowak, M., Ott, T., Otten, G., Paumard, T., Rabien, S., Rau, C., Ribeiro, D. C., Bordoni, M. Sadun, Sauter, J., Shangguan, J., Shimizu, T. T., Sykes, C., Soulain, A., Spezzano, S., Straubmeier, C., Stolker, T., Sturm, E., Subroweit, M., Tacconi, L. J., van Dishoeck, E. F., Vigan, A., Widmann, F., Wieprecht, E., Winterhalder, T. O., Woillez, J.
Owing to their similarities with giant exoplanets, brown dwarf companions of stars provide insights into the fundamental processes of planet formation and evolution. From their orbits, several brown dwarf companions are found to be more massive than
Externí odkaz:
http://arxiv.org/abs/2410.11953