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  • Beard, CoreyUniversity of California at Irvine (UCI),University of California, Irvine (author)

The TESS-Keck Survey. XVII. Precise Mass Measurements in a Young, High-multiplicity Transiting Planet System Using Radial Velocities and Transit Timing Variations

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • 2024
  • electronicrdacarrier

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  • LIBRIS-ID:oai:research.chalmers.se:4b5dac32-6d06-4ca3-a721-7c15918a8e48
  • https://research.chalmers.se/publication/539741URI
  • https://doi.org/10.3847/1538-3881/ad1330DOI
  • https://lup.lub.lu.se/record/5c42d0e0-18e6-4c3f-be07-57564f1b1e4cURI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

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  • We present a radial velocity (RV) analysis of TOI-1136, a bright Transiting Exoplanet Survey Satellite (TESS) system with six confirmed transiting planets, and a seventh single-transiting planet candidate. All planets in the system are amenable to transmission spectroscopy, making TOI-1136 one of the best targets for intra-system comparison of exoplanet atmospheres. TOI-1136 is young (similar to 700 Myr), and the system exhibits transit timing variations (TTVs). The youth of the system contributes to high stellar variability on the order of 50 m s-1, much larger than the likely RV amplitude of any of the transiting exoplanets. Utilizing 359 High Resolution Echelle Spectrometer and Automated Planet Finder RVs collected as part of the TESS-Keck Survey, and 51 High-Accuracy Radial velocity Planetary Searcher North RVs, we experiment with a joint TTV-RV fit. With seven possible transiting planets, TTVs, more than 400 RVs, and a stellar activity model, we posit that we may be presenting the most complex mass recovery of an exoplanet system in the literature to date. By combining TTVs and RVs, we minimized Gaussian process overfitting and retrieved new masses for this system: (m b-g = 3.50-0.7+0.8 , 6.32-1.3+1.1 , 8.35-1.6+1.8 , 6.07-1.01+1.09 , 9.7-3.7+3.9 , 5.6-3.2+4.1 M circle plus). We are unable to significantly detect the mass of the seventh planet candidate in the RVs, but we are able to loosely constrain a possible orbital period near 80 days. Future TESS observations might confirm the existence of a seventh planet in the system, better constrain the masses and orbital properties of the known exoplanets, and generally shine light on this scientifically interesting system.

Subject headings and genre

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  • Robertson, PaulUniversity of California at Irvine (UCI),University of California, Irvine (author)
  • Dai, FeiCalifornia Institute of Technology (Caltech),California Institute of Technology (author)
  • Holcomb, RaeUniversity of California at Irvine (UCI),University of California, Irvine (author)
  • Lubin, JackUniversity of California at Irvine (UCI),University of California, Irvine (author)
  • Murphy, Joseph M. AkanaUniversity of California, Santa Cruz (author)
  • Batalha, Natalie M.University of California, Santa Cruz (author)
  • Blunt, SarahCalifornia Institute of Technology (Caltech),California Institute of Technology (author)
  • Crossfield, IanUniversity of Kansas Lawrence (author)
  • Dressing, CourtneyUniversity of California at Berkeley,University of California, Berkeley (author)
  • Fulton, BenjaminCalifornia Institute of Technology (Caltech),National Aeronautics and Space Administration (NASA) (author)
  • Howard, Andrew W.California Institute of Technology (Caltech),California Institute of Technology (author)
  • Huber, DanUniversity of Hawaii (author)
  • Isaacson, HowardUniversity of California at Berkeley,University of Southern Queensland,University of California, Berkeley (author)
  • Kane, Stephen R.University of California, Riverside (author)
  • Nowak, GrzegorzUniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University,Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL) (author)
  • Petigura, Erik A.University of California, Los Angeles (author)
  • Roy, ArpitaJohns Hopkins University,Space Telescope Science Institute (STScI),Space Telescope Science Institute (author)
  • Rubenzahl, Ryan A.California Institute of Technology (Caltech),California Institute of Technology (author)
  • Weiss, Lauren M.University of Notre Dame (author)
  • Barrena, RafaelUniversidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL) (author)
  • Behmard, AidaCalifornia Institute of Technology (Caltech),California Institute of Technology (author)
  • Brinkman, Casey L.University of Hawaii (author)
  • Carleo, IlariaInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL) (author)
  • Chontos, AshleyPrinceton University,University of Hawaii (author)
  • Dalba, Paul A.NASA Ames Research Center,SETI Institute,University of California, Santa Cruz (author)
  • Fetherolf, TaraUniversity of California, Riverside (author)
  • Giacalone, StevenUniversity of California at Berkeley,University of California, Berkeley (author)
  • Hill, Michelle L.University of California, Riverside (author)
  • Kawauchi, KiyoeRitsumeikan Universitet,Ritsumeikan University,Ritsumeikan University, Biwako-Kusatsu (author)
  • Korth, JudithLund University,Lunds universitet,Astrofysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Astrophysics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ju7237ko (author)
  • Luque, Rafael (author)
  • Macdougall, Mason G.University of California, Los Angeles (author)
  • Mayo, Andrew W.University of California at Berkeley,University of California, Berkeley (author)
  • Mocnik, TeoGemini Observatory (author)
  • Morello, Giuseppe,1989Chalmers University of Technology,Instituto de Astrofísica de Canarias(Swepub:cth)morellog (author)
  • Murgas, FelipeUniversidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL) (author)
  • Orell-Miquel, JaumeInstituto de Astrofísica de Canarias (author)
  • Palle, EnricInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL) (author)
  • Polanski, Alex S.University of Kansas,University of Kansas Lawrence (author)
  • Rice, MalenaMassachusetts Institute of Technology (MIT),Yale University (author)
  • Scarsdale, NicholasUniversity of California, Santa Cruz (author)
  • Tyler, DakotahUniversity of California, Los Angeles (author)
  • Van Zandt, JudahUniversity of California, Los Angeles (author)
  • University of California at Irvine (UCI)University of California, Irvine (creator_code:org_t)

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  • In:Astronomical Journal167:21538-38810004-6256

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