Asteroseismology of the Red-giant Hosts KOI-3886 and iota Draconis
Creators
- Campante, Tiago L.1
- Li, Tanda2
- Ong, J. M. Joel3
- Corsaro, Enrico4
- Hill, Michelle L.5
- Lillo-Box, Jorge6
- Bedding, Timothy R.7
- Bossini, Diego1
- Brandt, Timothy D.8
- Breton, Sylvain N.9
- Buzasi, Derek L.10
- Chaplin, William J.2
- Cunha, Margarida S.1
- García, Rafael A.9
- Hon, Marc11
- Huber, Daniel11
- Jiang, Chen12
- Kane, Stephen R.5
- Kayhan, Cenk13
- Kuszlewicz, James S.12
- Mathur, Savita14
- Pereira, Filipe1
- Santos, Nuno C.1
- Serenelli, Aldo15
- Stello, Dennis16
- 1. Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
- 2. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
- 3. Department of Astronomy, Yale University, 52 Hillhouse Ave., New Haven, CT 06511, USA
- 4. INAF — Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
- 5. Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA
- 6. Centro de Astrobiología (CAB, CSIC-INTA), Depto. de Astrofísica, ESAC campus 28692 Villanueva de la Cañada (Madrid), Spain
- 7. Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia
- 8. Department of Physics, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
- 9. AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, F-91191 Gif-sur-Yvette, France
- 10. Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Blvd. S., Fort Myers, FL 33965, USA
- 11. Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- 12. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany
- 13. Department of Astronomy and Space Sciences, Erciyes University, 38030, Kayseri, Turkey
- 14. Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
- 15. Institute of Space Sciences (ICE, CSIC) Campus UAB, Carrer de Can Magrans, s/n, E-08193, Bellaterra, Spain
- 16. School of Physics, The University of New South Wales, Sydney NSW 2052, Australia
Contributors
Editor:
Description
Kepler asteroseismology has played an important role in the characterization of host stars and their planetary systems. Target selection biases, however, meant that this synergy would remain mostly confined to main-sequence stars. The advent of TESS has since lifted this restriction, enabling the systematic search for transiting planets around seismic giants, as well as revisiting previously known evolved hosts using asteroseismology. Here, we present the detailed asteroseismic modeling of two high-luminosity red-giant branch hosts, KOI-3886 and iota Draconis. KOI-3886, observed by Kepler over 4 years and later by TESS over 1 sector, has been a longtime candidate host. iota Draconis, observed by TESS over 5 sectors, is known to host a planet in a highly eccentric orbit. The precise (~ 6%) seismic mass derived for iota Draconis was combined with new radial-velocity observations to detect an additional long-period companion. Regarding KOI-3886, asteroseismology was key in helping reveal the planet candidate as a false positive and reinterpreting the system as an eclipsing brown dwarf in a hierarchical triple with two evolved stars. This brings to light the importance of asteroseismology in the study of planetary orbital dynamics off the main sequence and its lesser known role in candidate vetting.
Files
poster.pdf
Files
(6.3 MB)
Name | Size | Download all |
---|---|---|
md5:cbf6aa741816aa6a0c72cab7fbd23fab
|
6.3 MB | Preview Download |
Additional details
References
- Rowe, J. F., Coughlin, J. L., Antoci, V., et al. 2015, ApJS, 217, 16 (arXiv:1501.07286)
- Frink, S., Mitchell, D. S., Quirrenbach, A., et al. 2002, ApJ, 576, 478 (arXiv identifier n/a)
- García, R. A., Hekker, S., Stello, D., et al. 2011, MNRAS, 414, L6 (arXiv:1103.0382)
- Hill, M. L., Kane, S. R., Campante, T. L., et al. 2021, submitted to AJ (arXiv identifier n/a)
- Corsaro, E., & De Ridder, J. 2014, A&A, 571, A71 (arXiv:1408.2515)
- Campante, T. L., Corsaro, E., Lund, M. N., et al. 2019, ApJ, 885, 31 (arXiv:1909.05961)
- Corsaro, E., McKeever, J. M., Kuszlewicz, J. S., et al. 2020, A&A, 640, A130 (arXiv:2006.08245)
- Li, T., Bedding, T. R., Christensen-Dalsgaard, J., et al. 2020, MNRAS, 495, 3431 (arXiv:2006.00901)
- Lillo-Box, J., Ribas, Á., Montesinos, B., et al. 2021, accepted for publication in A&A (arXiv:2106.05011)