Zobrazeno 1 - 10
of 348
pro vyhledávání: '"Timothy R. Bedding"'
Autor:
Aldo G. Sepulveda, Daniel Huber, Timothy R. Bedding, Daniel R. Hey, Simon J. Murphy, Zhoujian Zhang, Michael C. Liu
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 13 (2024)
HIP 65426 hosts a young giant planet that has become the first exoplanet directly imaged with JWST. Using time-series photometry from the Transiting Exoplanet Survey Satellite (TESS), we classify HIP 65426 as a high-frequency δ Scuti pulsator with a
Externí odkaz:
https://doaj.org/article/0089e8676d274ebca986b7b1c1a4f215
Autor:
Mia S. Lundkvist, Hans Kjeldsen, Timothy R. Bedding, Mark J. McCaughrean, R. Paul Butler, Ditte Slumstrup, Tiago L. Campante, Conny Aerts, Torben Arentoft, Hans Bruntt, Cátia V. Cardoso, Fabien Carrier, Laird M. Close, João Gomes da Silva, Thomas Kallinger, Robert R. King, Yaguang Li, Simon J. Murphy, Jakob L. Rørsted, Dennis Stello
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 110 (2024)
We have detected solar-like oscillations in the mid-K-dwarf ϵ Indi A, making it the coolest dwarf to have measured oscillations. The star is noteworthy for harboring a pair of brown dwarf companions and a Jupiter-type planet. We observed ϵ Indi A d
Externí odkaz:
https://doaj.org/article/2b97a4f1ec664b74ae4619e116657184
Autor:
Subrata Kumar Panda, Siddharth Dhanpal, Simon J. Murphy, Shravan Hanasoge, Timothy R. Bedding
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 2, p 94 (2024)
Asteroseismology is a powerful tool to probe stellar structure. Spaceborne instruments like CoRoT, Kepler, and TESS have observed the oscillations of numerous stars, among which δ Scutis are particularly interesting, owing to their fast rotation and
Externí odkaz:
https://doaj.org/article/3735186f13534634ba0fdcb19759f9f1
Autor:
Timothy R. Bedding, Simon J. Murphy, Courtney Crawford, Daniel R. Hey, Daniel Huber, Hans Kjeldsen, Yaguang Li, Andrew W. Mann, Guillermo Torres, Timothy R. White, George Zhou
Publikováno v:
The Astrophysical Journal Letters, Vol 946, Iss 1, p L10 (2023)
We studied 89 A- and F-type members of the Pleiades open cluster, including five escaped members. We measured projected rotational velocities ( $v\sin i$ ) for 49 stars and confirmed that stellar rotation causes a broadening of the main sequence in t
Externí odkaz:
https://doaj.org/article/97fdaf01fb2641378068af1bb2522159
Autor:
Daniel R. Hey, Daniel Huber, Benjamin J. Shappee, Joss Bland-Hawthorn, Thor Tepper-García, Robyn Sanderson, Sukanya Chakrabarti, Nicholas Saunders, Jason A. S. Hunt, Timothy R. Bedding, John Tonry
Publikováno v:
The Astronomical Journal, Vol 166, Iss 6, p 249 (2023)
The Galactic bulge is critical to our understanding of the Milky Way. However, due to the lack of reliable stellar distances, the structure and kinematics of the bulge/bar beyond the Galactic center have remained largely unexplored. Here, we present
Externí odkaz:
https://doaj.org/article/cd1f668a325743c1a0a983eee320093c
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 953, Iss 2, p 182 (2023)
This paper reports the estimated stellar parameters of 1153 Kepler red giant branch stars determined with asteroseismic modeling. We use radial-mode oscillation frequencies, gravity-mode period spacings, Gaia luminosities, and spectroscopic data to c
Externí odkaz:
https://doaj.org/article/c88ff314a06e4714b4896b67e39ce9bc
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
Autor:
Chen Jiang, Tao Wu, Adina D. Feinstein, Keivan G. Stassun, Timothy R. Bedding, Dimitri Veras, Enrico Corsaro, Derek L. Buzasi, Dennis Stello, Yaguang Li, Savita Mathur, Rafael A. García, Sylvain N. Breton, Mia S. Lundkvist, Przemysław J. Mikołajczyk, Charlotte Gehan, Tiago L. Campante, Diego Bossini, Stephen R. Kane, Jia Mian Joel Ong, Mutlu Yıldız, Cenk Kayhan, Zeynep Çelik Orhan, Sibel Örtel, Xinyi Zhang, Margarida S. Cunha, Bruno Lustosa de Moura, Jie Yu, Daniel Huber, Jian-wen Ou, Robert A. Wittenmyer, Laurent Gizon, William J. Chaplin
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 1, p 20 (2023)
The Transiting Exoplanet Survey Satellite (TESS) mission searches for new exoplanets. The observing strategy of TESS results in high-precision photometry of millions of stars across the sky, allowing for detailed asteroseismic studies of individual s
Externí odkaz:
https://doaj.org/article/44154bef65484b1d85f9d7ebc378acc0
Publikováno v:
The Astrophysical Journal, Vol 938, Iss 1, p 49 (2022)
51 Eri is well known for hosting a directly imaged giant planet and for its membership to the β Pictoris moving group. Using 2 minute cadence photometry from the Transiting Exoplanet Survey Satellite (TESS), we detect multiperiodic variability in 51
Externí odkaz:
https://doaj.org/article/e06700719c07480a888058d82a94d825