The Astrophysical Journal (Jan 2024)
Asteroseismology of the Nearby K Dwarf σ Draconis Using the Keck Planet Finder and TESS
- Marc Hon,
- Daniel Huber,
- Yaguang Li,
- Travis S. Metcalfe,
- Timothy R. Bedding,
- Joel Ong,
- Ashley Chontos,
- Ryan Rubenzahl,
- Samuel Halverson,
- Rafael A. García,
- Hans Kjeldsen,
- Dennis Stello,
- Daniel R. Hey,
- Tiago Campante,
- Andrew W. Howard,
- Steven R. Gibson,
- Kodi Rider,
- Arpita Roy,
- Ashley D. Baker,
- Jerry Edelstein,
- Chris Smith,
- Benjamin J. Fulton,
- Josh Walawender,
- Max Brodheim,
- Matt Brown,
- Dwight Chan,
- Fei Dai,
- William Deich,
- Colby Gottschalk,
- Jason Grillo,
- Dave Hale,
- Grant M. Hill,
- Bradford Holden,
- Aaron Householder,
- Howard Isaacson,
- Yuzo Ishikawa,
- Sharon R. Jelinsky,
- Marc Kassis,
- Stephen Kaye,
- Russ Laher,
- Kyle Lanclos,
- Chien-Hsiu Lee,
- Scott Lilley,
- Ben McCarney,
- Timothy N. Miller,
- Joel Payne,
- Erik A. Petigura,
- Claire Poppett,
- Michael Raffanti,
- Constance Rockosi,
- Dale Sanford,
- Christian Schwab,
- Abby P. Shaum,
- Martin M. Sirk,
- Roger Smith,
- Jim Thorne,
- John Valliant,
- Adam Vandenberg,
- Shin Ywan Wang,
- Edward Wishnow,
- Truman Wold,
- Sherry Yeh,
- Ashley Baker,
- Sarbani Basu,
- Megan Bedell,
- Heather M. Cegla,
- Ian Crossfield,
- Courtney Dressing,
- Xavier Dumusque,
- Heather Knutson,
- Dimitri Mawet,
- John O’Meara,
- Guđmundur Stefánsson,
- Johanna Teske,
- Gautam Vasisht,
- Sharon Xuesong Wang,
- Lauren M. Weiss,
- Joshua N. Winn,
- Jason T. Wright
Affiliations
- Marc Hon
- ORCiD
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA ; [email protected]; Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Daniel Huber
- ORCiD
- Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA; Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia
- Yaguang Li
- ORCiD
- Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Travis S. Metcalfe
- ORCiD
- Center for Solar-Stellar Connections, White Dwarf Research Corporation , 9020 Brumm Trail, Golden, CO 80403, USA
- Timothy R. Bedding
- ORCiD
- Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia
- Joel Ong
- ORCiD
- Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Ashley Chontos
- ORCiD
- Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA; Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Ryan Rubenzahl
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Samuel Halverson
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Rafael A. García
- ORCiD
- Université Paris-Saclay, Université Paris Cité , CEA, CNRS, AIM, F-91191, Gif-sur-Yvette, France
- Hans Kjeldsen
- ORCiD
- Stellar Astrophysics Centre, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, Denmark
- Dennis Stello
- ORCiD
- Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia; School of Physics, University of New South Wales , NSW 2052, Australia; ARC Centre of Excellence for All Sky Astrophysics in Three Dimensions (ASTRO-3D), Australia
- Daniel R. Hey
- ORCiD
- Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Tiago Campante
- ORCiD
- Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto , Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto , Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
- Andrew W. Howard
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Steven R. Gibson
- ORCiD
- Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USA
- Kodi Rider
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Arpita Roy
- ORCiD
- Astrophysics & Space Institute , Schmidt Sciences, New York, NY 10011, USA
- Ashley D. Baker
- ORCiD
- Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USA
- Jerry Edelstein
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Chris Smith
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Benjamin J. Fulton
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Josh Walawender
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Max Brodheim
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Matt Brown
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Dwight Chan
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Fei Dai
- ORCiD
- Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- William Deich
- ORCiD
- UC Observatories, University of California, Santa Cruz , Santa Cruz, CA 95064, USA
- Colby Gottschalk
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Jason Grillo
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Dave Hale
- Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USA
- Grant M. Hill
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Bradford Holden
- ORCiD
- UC Observatories, University of California, Santa Cruz , Santa Cruz, CA 95064, USA
- Aaron Householder
- ORCiD
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA ; [email protected]; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- Howard Isaacson
- ORCiD
- Department of Astronomy, 501 Campbell Hall, University of California , Berkeley, CA 94720, USA
- Yuzo Ishikawa
- ORCiD
- Department of Physics & Astronomy, Bloomberg Center, Johns Hopkins University , Baltimore, MD 21218, USA
- Sharon R. Jelinsky
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Marc Kassis
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Stephen Kaye
- Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USA
- Russ Laher
- ORCiD
- NASA Exoplanet Science Institute/Caltech-IPAC, California Institute of Technology , Pasadena, CA 91125, USA
- Kyle Lanclos
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Chien-Hsiu Lee
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Scott Lilley
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Ben McCarney
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Timothy N. Miller
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Joel Payne
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Erik A. Petigura
- ORCiD
- Department of Physics & Astronomy, University of California, Los Angeles , Los Angeles, CA 90095, USA
- Claire Poppett
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Michael Raffanti
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Constance Rockosi
- ORCiD
- UC Observatories, University of California, Santa Cruz , Santa Cruz, CA 95064, USA
- Dale Sanford
- UC Observatories, University of California, Santa Cruz , Santa Cruz, CA 95064, USA
- Christian Schwab
- ORCiD
- School of Mathematical and Physical Sciences, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia
- Abby P. Shaum
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Martin M. Sirk
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Roger Smith
- ORCiD
- Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USA
- Jim Thorne
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- John Valliant
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Adam Vandenberg
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Shin Ywan Wang
- NASA Exoplanet Science Institute/Caltech-IPAC, California Institute of Technology , Pasadena, CA 91125, USA
- Edward Wishnow
- Space Sciences Laboratory, University of California , Berkeley, CA 94720, USA
- Truman Wold
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Sherry Yeh
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Ashley Baker
- ORCiD
- Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USA
- Sarbani Basu
- ORCiD
- Department of Astronomy, Yale University , New Haven, CT 06520, USA
- Megan Bedell
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA
- Heather M. Cegla
- ORCiD
- Physics Department, University of Warwick , Coventry CV4 7AL, UK
- Ian Crossfield
- Department of Physics and Astronomy, University of Kansas , Lawrence, KS 66045, USA
- Courtney Dressing
- Department of Astronomy, 501 Campbell Hall, University of California , Berkeley, CA 94720, USA
- Xavier Dumusque
- ORCiD
- Observatoire Astronomique de l’Université de Genève , Chemin Pegasi 51, 1290 Versoix, Switzerland
- Heather Knutson
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Dimitri Mawet
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- John O’Meara
- ORCiD
- W. M. Keck Observatory , 65-1120 Mamalahoa Hwy., Kamuela, HI 96743, USA
- Guđmundur Stefánsson
- ORCiD
- Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands
- Johanna Teske
- ORCiD
- Earth and Planets Laboratory, Carnegie Institution for Science , 5241 Broad Branch Road NW, Washington, DC 20015, USA
- Gautam Vasisht
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Sharon Xuesong Wang
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China
- Lauren M. Weiss
- ORCiD
- Department of Physics and Astronomy, University of Notre Dame , Notre Dame, IN 46556, USA
- Joshua N. Winn
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Jason T. Wright
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA, 16802, USA; Center for Exoplanets & Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- DOI
- https://doi.org/10.3847/1538-4357/ad76a9
- Journal volume & issue
-
Vol. 975,
no. 1
p. 147
Abstract
Asteroseismology of dwarf stars cooler than the Sun is very challenging owing to the low amplitudes and rapid timescales of oscillations. Here we present the asteroseismic detection of solar-like oscillations at 4-minute timescales ( ${\nu }_{\max }\sim 4300$ μ Hz) in the nearby K dwarf σ Draconis using extreme-precision Doppler velocity observations from the Keck Planet Finder and 20 s cadence photometry from NASA’s Transiting Exoplanet Survey Satellite. The star is the coolest dwarf star to date with both velocity and luminosity observations of solar-like oscillations, having amplitudes of 5.9 ± 0.8 cm s ^−1 and 0.8 ± 0.2 ppm, respectively. These measured values are in excellent agreement with established luminosity−velocity amplitude relations for oscillations and provide further evidence that mode amplitudes for stars with T _eff < 5500 K diminish in scale following an ( L / M ) ^1.5 relation. By modeling the star’s oscillation frequencies from photometric data, we measure an asteroseismic age of 4.5 ± 0.9 (ran) ± 1.2 (sys) Gyr. The observations demonstrate the capability of next-generation spectrographs and precise space-based photometry to extend observational asteroseismology to nearby cool dwarfs, which are benchmarks for stellar astrophysics and prime targets for directly imaging planets using future space-based telescopes.
Keywords
