Zobrazeno 1 - 10
of 643
pro vyhledávání: '"Apai, P."'
We apply multi-algorithm machine learning models to TESS 2-minute survey data from Sectors 1-72 to identify stellar flares. Models trained with Deep Neural Network, Random Forest, and XGBoost algorithms, respectively, utilized four flare light curve
Externí odkaz:
http://arxiv.org/abs/2409.02540
Beta Pictoris (Beta Pic)'s well-studied debris disk and two known giant planets, in combination with the stability of HST/STIS (and now also JWST), offers a unique opportunity to test planet-disk interaction models and to observe recent planetesimal
Externí odkaz:
http://arxiv.org/abs/2408.12351
Atmospheres are not spatially homogeneous. This is particularly true for hot, tidally locked exoplanets with large day-to-night temperature variations, which can yield significant differences between the morning and evening terminators -- known as li
Externí odkaz:
http://arxiv.org/abs/2407.17564
Autor:
Li, Jialin, Close, Laird M., Males, Jared R., Haffert, Sebastiaan Y., Weinberger, Alycia, Follette, Katherine, Wagner, Kevin, Apai, Daniel, Wu, Ya-Lin, Long, Joseph D., Perez, Laura, Pearce, Logan A., Kueny, Jay K., McEwen, Eden A., Van Gorkom, Kyle, Guyon, Olivier, Kautz, Maggie Y., Hedglen, Alexander D., Foster, Warren B., Roberts, Roz, Lumbres, Jennifer, Schatz, Lauren
The high contrast and spatial resolution requirements for directly imaging exoplanets requires effective coordination of wavefront control, coronagraphy, observation techniques, and post-processing algorithms. However, even with this suite of tools,
Externí odkaz:
http://arxiv.org/abs/2407.13756
Long wavelength infrared (8-13 $\mu$m) spectroscopy is invaluable for detecting molecular features in the atmospheres of gas giant and terrestrial exoplanets. The nulling-optimized mid-infrared camera (NOMIC) on the Large Binocular Telescope Interfer
Externí odkaz:
http://arxiv.org/abs/2407.03620
Terrestrial planets in the Habitable Zone of Sun-like stars are priority targets for detection and observation by the next generation of powerful space telescopes. Earth's long-term habitability may have been tied to the geological carbon cycle, a pr
Externí odkaz:
http://arxiv.org/abs/2406.16104
Autor:
Hardegree-Ullman, Kevin K., Apai, Dániel, Haffert, Sebastiaan Y., Schlecker, Martin, Kasper, Markus, Kammerer, Jens, Wagner, Kevin
Biosignature detection in the atmospheres of Earth-like exoplanets is one of the most significant and ambitious goals for astronomy, astrobiology, and humanity. Molecular oxygen is among the strongest indicators of life on Earth, but it will be extre
Externí odkaz:
http://arxiv.org/abs/2405.11423
Autor:
Scalco, M., Libralato, M., Gerasimov, R., Bedin, L. R., Vesperini, E., Nardiello, D., Bellini, A., Griggio, M., Apai, D., Salaris, M., Burgasser, A., Anderson, J.
Thanks to its exceptional near-infrared photometry, JWST can effectively contribute to the discovery, characterization, and understanding of multiple stellar populations in globular clusters, especially at low masses where the Hubble Space Telescope
Externí odkaz:
http://arxiv.org/abs/2405.01635
Autor:
Gerasimov, Roman, Bedin, Luigi R., Burgasser, Adam J., Apai, Daniel, Nardiello, Domenico, Alvarado III, Efrain, Anderson, Jay
Globular clusters contain vast repositories of metal-poor stars that represent some of the oldest stellar generations in the Universe. The archaeological footprint of early Galactic evolution may be retained in the measurable properties of globular c
Externí odkaz:
http://arxiv.org/abs/2405.01634
Autor:
Bedin, L. R., Nardiello, D., Salaris, M., Libralato, M., Bergeron, P., Burgasser, A. J., Apai, D., Griggio, M., Scalco, M., Anderson, J., Gerasimov, R., Bellini, A.
We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundam
Externí odkaz:
http://arxiv.org/abs/2405.01631