Zobrazeno 1 - 10
of 4 164
pro vyhledávání: '"Dupree P."'
Autor:
MacLeod, Morgan, Blunt, Sarah, De Rosa, Robert J., Dupree, Andrea K., Granzer, Thomas, Harper, Graham M., Huang, Caroline D., Leiner, Emily M., Loeb, Abraham, Nielsen, Eric L., Strassmeier, Klaus G., Wang, Jason J., Weber, Michael
We examine a century of radial velocity, visual magnitude, and astrometric observations of the nearest red supergiant, Betelgeuse, in order to reexamine the century-old assertion that Betelgeuse might be a spectroscopic binary. These data reveal Bete
Externí odkaz:
http://arxiv.org/abs/2409.11332
Autor:
Cristofari, Paul I., Dupree, Andrea K., Milone, Antonino P., Walker, Matthew G., Mateo, Mario, Dotter, Aaron, Bailey III, John I.
We present an analysis of high-resolution optical spectra recorded for 30 stars of the split extended main-sequence turnoff (eMSTO) of the young ($\sim$ 40 Myr) Small Magellanic Cloud (SMC) globular cluster NGC 330. Spectra were obtained with the M2F
Externí odkaz:
http://arxiv.org/abs/2406.10413
Autor:
Jadlovský, Daniel, Granzer, Thomas, Weber, Michael, Kravchenko, Kateryna, Krtička, Jiří, Dupree, Andrea K., Chiavassa, Andrea, Strassmeier, Klaus G., Poppenhäger, Katja
Publikováno v:
A&A 685, A124 (2024)
Betelgeuse, a red supergiant star of semi-regular variability, reached a historical minimum brightness in February 2020, known as the Great Dimming. Even though the brightness has returned to the values prior to the Great Dimming now, it continues to
Externí odkaz:
http://arxiv.org/abs/2312.02816
Autor:
Herczeg, Gregory J., Chen, Yuguang, Donati, Jean-Francois, Dupree, Andrea K., Walter, Frederick M., Hillenbrand, Lynne A., Johns-Krull, Christopher M., Manara, Carlo F., Guenther, Hans Moritz, Fang, Min, Schneider, P. Christian, Valenti, Jeff A., Alencar, Silvia H. P., Venuti, Laura, Alcala, Juan Manuel, Frasca, Antonio, Arulanantham, Nicole, Linsky, Jeffrey L., Bouvier, Jerome, Brickhouse, Nancy S., Calvet, Nuria, Espaillat, Catherine C., Campbell-White, Justyn, Carpenter, John M., Chang, Seok-Jun, Cruz, Kelle L., Dahm, S. E., Eisloeffel, Jochen, Edwards, Suzan, Fischer, William J., Guo, Zhen, Henning, Thomas, Ji, Tao, Jose, Jesse, Kastner, Joel H., Launhardt, Ralf, Principe, David A., Robinson, Conner E., Serna, Javier, Siwak, Michal, Sterzik, Michael F., Takasao, Shinsuke
Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time of the mass accretion rate onto TW Hya, the nearest accreting solar-m
Externí odkaz:
http://arxiv.org/abs/2308.14590
Betelgeuse, the nearest red supergiant, dimmed to an unprecedented level in early 2020. The star emerged from this Great Dimming episode with its typical, roughly 400-day pulsation cycle halved, and a new dominant period of around 200 days. The dimmi
Externí odkaz:
http://arxiv.org/abs/2305.09732
Autor:
Cannon, E., Montargès, M., de Koter, A., Matter, A., Sanchez-Bermudez, J., Norris, R., Paladini, C., Decin, L., Sana, H., Sundqvist, J. O., Lagadec, E., Kervella, P., Chiavassa, A., Dupree, A. K., Perrin, G., Scicluna, P., Stee, P., Kraus, S., Danchi, W., Lopez, B., Millour, F., Drevon, J., Cruzalèbes, P., Berio, P., Robbe-Dubois, S., Rosales-Guzman, A.
Publikováno v:
A&A 675, A46 (2023)
The 'Great Dimming' of the prototypical red supergiant Betelgeuse, which occurred between December 2019 and April 2020, gives us unprecedented insight into the processes occurring on the stellar surface and in the inner wind of this type of star. In
Externí odkaz:
http://arxiv.org/abs/2303.08892
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract Scholars of color remain underrepresented in US institutions in academia. In this paper, we will examine one factor that contributes to their continued marginalization in psychology and management: the scientific method’s commitment to tra
Externí odkaz:
https://doaj.org/article/cbb0c67edec841a7a990c45db1bf5117
Autor:
Sneden, Christopher, Afsar, Melike, Bozkurt, Zeynep, Adamow, Monika, Mallick, Anohita, Reddy, Bacham E., Janowiecki, Steven, Mahadevan, Suvrath, Bowler, Brendan P., Hawkins, Keith, Lind, Karin, Dupree, Andrea K., Ninan, Joe P., Nagarajan, Neel, Topcu, Gamze Bocek, Froning, Cynthia S., Bender, Chad F., Terrien, Ryan, Ramsey, Lawrence W., Mace, Gregory N.
We have gathered near-infrared $zyJ$-band high resolution spectra of nearly 300 field red giant stars with known lithium abundances in order to survey their \species{He}{i} $\lambda$10830 absorption strengths. This transition is an indicator of chrom
Externí odkaz:
http://arxiv.org/abs/2209.05941
Autor:
Dupree, Andrea K., Strassmeier, Klaus G., Calderwood, Thomas, Granzer, Thomas, Weber, Michael, Kravchenko, Kateryna, Matthews, Lynn D., Montarges, Miguel, Tappin, James, Thompson, William T.
The bright supergiant, Betelgeuse (Alpha Orionis, HD 39801), underwent a historic optical dimming during 2020 January 27 $-$ February 13. Many imaging and spectroscopic observations across the electromagnetic spectrum were obtained prior to, during,
Externí odkaz:
http://arxiv.org/abs/2208.01676
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