Zobrazeno 1 - 10
of 30
pro vyhledávání: '"J. M. Joel Ong"'
Autor:
J. M. Joel Ong, Marc Teng Yen Hon, Melinda Soares-Furtado, Alexander P. Stephan, Jennifer van Saders, Jamie Tayar, Benjamin Shappee, Daniel R. Hey, Lyra Cao, Mutlu Yıldız, Zeynep Çelik Orhan, Sibel Örtel, Benjamin Montet, Thomas W.-S. Holoien, Joss Bland-Hawthorn, Sven Buder, Gayandhi M. De Silva, Ken C. Freeman, Sarah L. Martell, Geraint F. Lewis, Sanjib Sharma, Dennis Stello
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 42 (2024)
We report the discovery and characterization of TIC 350842552 (“Zvrk”), an apparently isolated, rapidly rotating ( P _rot ∼ 99 days) red giant observed by TESS in its southern Continuous Viewing Zone. The star’s fast surface rotation is indep
Externí odkaz:
https://doaj.org/article/bb5b471dee324e7eada5b0ab43f2da63
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 171 (2024)
Some physical processes that occur during a star's main-sequence evolution also affect its post-main-sequence evolution. It is well known that stars with masses above approximately 1.1 M _⊙ have well-mixed convective cores on the main sequence; how
Externí odkaz:
https://doaj.org/article/85f54c782d44407d9be7679b7da72424
Autor:
J. M. Joel Ong
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 2 (2023)
Asteroseismology is our only means of measuring the rotations of stars in their interiors, rather than at their surfaces. Some techniques for measurements of this kind—“rotational inversions”—require the shapes of linear response kernels comp
Externí odkaz:
https://doaj.org/article/e0d63f835bfa4e2492395796552fc399
Autor:
Travis S. Metcalfe, Derek Buzasi, Daniel Huber, Marc H. Pinsonneault, Jennifer L. van Saders, Thomas R. Ayres, Sarbani Basu, Jeremy J. Drake, Ricky Egeland, Oleg Kochukhov, Pascal Petit, Steven H. Saar, Victor See, Keivan G. Stassun, Yaguang Li, Timothy R. Bedding, Sylvain N. Breton, Adam J. Finley, Rafael A. García, Hans Kjeldsen, Martin B. Nielsen, J. M. Joel Ong, Jakob L. Rørsted, Amalie Stokholm, Mark L. Winther, Catherine A. Clark, Diego Godoy-Rivera, Ilya V. Ilyin, Klaus G. Strassmeier, Sandra V. Jeffers, Stephen C. Marsden, Aline A. Vidotto, Sallie Baliunas, Willie Soon
Publikováno v:
The Astronomical Journal, Vol 166, Iss 4, p 167 (2023)
The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M _⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun. We aim to ch
Externí odkaz:
https://doaj.org/article/cb097db1977143629195bc3f6d94b093
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 1, p 19 (2023)
Asteroseismology has been used extensively in recent years to study the interior structure and physical processes of main-sequence stars. We consider prospects for using pressure modes (p-modes) near the frequency of maximum oscillation power to prob
Externí odkaz:
https://doaj.org/article/841921b145ae40e4b87cbcffa7022ee4
Autor:
Tiago L. Campante, Tanda Li, J. M. Joel Ong, Enrico Corsaro, Margarida S. Cunha, Timothy R. Bedding, Diego Bossini, Sylvain N. Breton, Derek L. Buzasi, William J. Chaplin, Morgan Deal, Rafael A. García, Michelle L. Hill, Marc Hon, Daniel Huber, Chen Jiang, Stephen R. Kane, Cenk Kayhan, James S. Kuszlewicz, Jorge Lillo-Box, Savita Mathur, Mário J. P. F. G. Monteiro, Filipe Pereira, Nuno C. Santos, Aldo Serenelli, Dennis Stello
Publikováno v:
The Astronomical Journal, Vol 165, Iss 5, p 214 (2023)
Asteroseismology is playing an increasingly important role in the characterization of red giant host stars and their planetary systems. Here, we conduct detailed asteroseismic modeling of the evolved red giant branch (RGB) hosts KOI-3886 and ι Draco
Externí odkaz:
https://doaj.org/article/933892b91fcd4fa298bf766335340f8f
Publikováno v:
The Astrophysical Journal, Vol 947, Iss 1, p 22 (2023)
While solar-like oscillations in red giants have been observed at massive scales by the Kepler mission, few features of these oscillation mode frequencies, other than their global properties, have been exploited for stellar characterization. The sign
Externí odkaz:
https://doaj.org/article/2ed68d67a28d46d0aca00dec757552d9
Autor:
J. M. Joel Ong, Charlotte Gehan
Publikováno v:
The Astrophysical Journal, Vol 946, Iss 2, p 92 (2023)
In the mixed-mode asteroseismology of subgiants and red giants, the coupling between the p- and g- mode cavities must be understood well in order to derive localized estimates of interior rotation from measurements of mode multiplet rotational splitt
Externí odkaz:
https://doaj.org/article/24f242d869b543e387b1d35f945b1689
Autor:
Enrico Corsaro, William J. Chaplin, James S. Kuszlewicz, Zhexing Li, Benjamin J. Fulton, S. N. Breton, Rafael A. García, Derek Buzasi, Tanda Li, Dennis Stello, J. M. Joel Ong, Timothy D. Brandt, Paul A. Dalba, Marc Hon, Savita Mathur, Keivan G. Stassun, Aldo Serenelli, Timothy R. White, Timothy R. Bedding, Margarida S. Cunha, Chen Jiang, Benjamin J. S. Pope, Daniel Huber, Cenk Kayhan, Michelle L. Hill, Stephen R. Kane, Tiago L. Campante, Diego Bossini
Publikováno v:
Hill, M L, Kane, S R, Campante, T L, Li, Z, Dalba, P A, Brandt, T D, White, T R, Pope, B J S, Stassun, K G, Fulton, B J, Corsaro, E, Li, T, Ong, J M J, Bedding, T R, Bossini, D, Buzasi, D L, Chaplin, W J, Cunha, M S, García, R A, Breton, S N, Hon, M, Huber, D, Jiang, C, Kayhan, C, Kuszlewicz, J S, Mathur, S, Serenelli, A & Stello, D 2021, ' Asteroseismology of iota Draconis and Discovery of an Additional Long-period Companion ', Astronomical Journal, vol. 162, no. 5, 211 . https://doi.org/10.3847/1538-3881/ac1b31
The Astronomical Journal
Digital.CSIC. Repositorio Institucional del CSIC
instname
The Astronomical Journal
Digital.CSIC. Repositorio Institucional del CSIC
instname
Hill, Michelle L., et al.
Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted transit depths. However, these giant host stars are also some of
Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted transit depths. However, these giant host stars are also some of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcebdd18163113aea676a5a0dbc175c5
https://avesis.erciyes.edu.tr/publication/details/7e2fd1ff-4746-4eb6-9028-ba33af12ee78/oai
https://avesis.erciyes.edu.tr/publication/details/7e2fd1ff-4746-4eb6-9028-ba33af12ee78/oai
Autor:
Allyson Bieryla, Sarbani Basu, David W. Latham, J. M. Joel Ong, Lucas S. Viani, Mikkel N. Lund
Publikováno v:
Ong, J M J, Basu, S, Lund, M N, Bieryla, A, Viani, L S & Latham, D W 2021, ' Mixed Modes and Asteroseismic Surface Effects. II. Subgiant Systematics ', Astrophysical Journal, vol. 922, no. 1, 18 . https://doi.org/10.3847/1538-4357/ac1e8b
Models of solar-like oscillators yield acoustic modes at different frequencies than would be seen in actual stars possessing identical interior structure, due to modeling error near the surface. This asteroseismic “surface term” must be corrected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9419282dda8bb23793b0de926a4d1869
https://pure.au.dk/portal/da/publications/mixed-modes-and-asteroseismic-surface-effects-ii-subgiant-systematics(b1d2190e-ddda-4030-82b4-ffb71cfccc79).html
https://pure.au.dk/portal/da/publications/mixed-modes-and-asteroseismic-surface-effects-ii-subgiant-systematics(b1d2190e-ddda-4030-82b4-ffb71cfccc79).html