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Asteroseismology an...
Asteroseismology and Spectropolarimetry of the Exoplanet Host Star Lambda Serpentis
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- Metcalfe, Travis S. (författare)
- White Dwarf Res Corp, 9020 Brumm Trail, Golden, CO 80403 USA.
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- Buzasi, Derek (författare)
- Florida Gulf Coast Univ, Dept Chem & Phys, 10501 FGCU Blvd South, Ft Myers, FL 33965 USA.
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- Huber, Daniel (författare)
- Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA.;Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Sydney, NSW 2006, Australia.
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- Pinsonneault, Marc H. (författare)
- Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA.
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- van Saders, Jennifer L. (författare)
- Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA.
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- Ayres, Thomas R. (författare)
- Univ Colorado, Ctr Astrophys & Space Astron, 389 UCB, Boulder, CO 80309 USA.
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- Basu, Sarbani (författare)
- Yale Univ, Dept Astron, POB 208101, New Haven, CT 06520 USA.
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- Drake, Jeremy J. (författare)
- Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
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- Egeland, Ricky (författare)
- White Dwarf Res Corp, 9020 Brumm Trail, Golden, CO 80403 USA.
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- Kochukhov, Oleg (författare)
- Uppsala universitet,Observationell astrofysik
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- Petit, Pascal (författare)
- Univ Toulouse, CNRS, CNES, 14 Ave Edouard Belin, F-31400 Toulouse, France.
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- Saar, Steven H. (författare)
- Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
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- See, Victor (författare)
- European Space Res & Technol Ctr ESTEC, European Space Agcy ESA, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands.
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- Stassun, Keivan G. (författare)
- Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA.
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- Li, Yaguang (författare)
- Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Sydney, NSW 2006, Australia.
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- Bedding, Timothy R. (författare)
- Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Sydney, NSW 2006, Australia.
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- Breton, Sylvain N. (författare)
- INAF Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy.
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- Finley, Adam J. (författare)
- Univ Paris Saclay, Univ Paris Cite, CEA, CNRS,AIM, F-91191 Gif Sur Yvette, France.
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- Garcia, Rafael A. (författare)
- Univ Paris Saclay, Univ Paris Cite, CEA, CNRS,AIM, F-91191 Gif Sur Yvette, France.
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- Kjeldsen, Hans (författare)
- Aarhus Univ, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus, Denmark.
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- Nielsen, Martin B. (författare)
- Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, England.
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- Ong, J. M. Joel (författare)
- Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA.
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- Rørsted, Jakob L. (författare)
- Aarhus Univ, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus, Denmark.
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- Stokholm, Amalie (författare)
- Aarhus Univ, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus, Denmark.;Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy.;INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.
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- Winther, Mark L. (författare)
- Aarhus Univ, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus, Denmark.
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- Clark, Catherine A. (författare)
- CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.;CALTECH, NASA Exoplanet Sci Inst, IPAC, Pasadena, CA 91125 USA.
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- Godoy-Rivera, Diego (författare)
- Inst Astrofis Canarias, E-38205 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain.
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- Ilyin, Ilya V. (författare)
- Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany.
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- Strassmeier, Klaus G. (författare)
- Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany.
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- Jeffers, Sandra V. (författare)
- Max Planck Inst Sonnensyst Forsch, Justus von Liebig weg 3, D-37077 Gottingen, Germany.
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- Marsden, Stephen C. (författare)
- Univ Southern Queensland, Ctr Astrophys, Toowoomba, Qld 4350, Australia.
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- Vidotto, Aline A. (författare)
- Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands.
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- Baliunas, Sallie (författare)
- Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
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- Soon, Willie (författare)
- Inst Earth Phys & Space Sci EPSS, Sopron, Hungary.;Ctr Environm Res & Earth Sci, Salem, MA 01970 USA.
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White Dwarf Res Corp, 9020 Brumm Trail, Golden, CO 80403 USA Florida Gulf Coast Univ, Dept Chem & Phys, 10501 FGCU Blvd South, Ft Myers, FL 33965 USA. (creator_code:org_t)
- Institute of Physics (IOP), 2023
- 2023
- Engelska.
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Ingår i: Astronomical Journal. - : Institute of Physics (IOP). - 0004-6256 .- 1538-3881. ; 166:4
- Relaterad länk:
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https://doi.org/10.3...
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https://uu.diva-port... (primary) (Raw object)
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- The bright star lambda Ser hosts a hot Neptune with a minimum mass of 13.6 M & OPLUS; 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 characterize the fundamental properties of this system and constrain the evolutionary pathway that led to its present configuration. We detect solar-like oscillations in time series photometry from the Transiting Exoplanet Survey Satellite, and we derive precise asteroseismic properties from detailed modeling. We obtain new spectropolarimetric data, and we use them to reconstruct the large-scale magnetic field morphology. We reanalyze the complete time series of chromospheric activity measurements from the Mount Wilson Observatory, and we present new X-ray and ultraviolet observations from the Chandra and Hubble space telescopes. Finally, we use the updated observational constraints to assess the rotational history of the star and estimate the wind braking torque. We conclude that the remaining uncertainty on the stellar age currently prevents an unambiguous interpretation of the properties of lambda Ser, and that the rate of angular momentum loss appears to be higher than for other stars with a similar Rossby number. Future asteroseismic observations may help to improve the precision of the stellar age.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Metcalfe, Travis ...
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Buzasi, Derek
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Huber, Daniel
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Pinsonneault, Ma ...
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van Saders, Jenn ...
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Ayres, Thomas R.
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visa fler...
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Basu, Sarbani
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Drake, Jeremy J.
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Egeland, Ricky
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Kochukhov, Oleg
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Petit, Pascal
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Saar, Steven H.
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See, Victor
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Stassun, Keivan ...
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Li, Yaguang
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Bedding, Timothy ...
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Breton, Sylvain ...
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Finley, Adam J.
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Garcia, Rafael A ...
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Kjeldsen, Hans
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Nielsen, Martin ...
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Ong, J. M. Joel
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Rørsted, Jakob L ...
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Stokholm, Amalie
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Winther, Mark L.
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Clark, Catherine ...
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Godoy-Rivera, Di ...
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Ilyin, Ilya V.
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Strassmeier, Kla ...
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Jeffers, Sandra ...
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Marsden, Stephen ...
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Vidotto, Aline A ...
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Baliunas, Sallie
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Soon, Willie
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