Downloads provided by UsageCountsTOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf
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Faith Hawthorn; Daniel Bayliss; Thomas G Wilson; Andrea Bonfanti; Vardan Adibekyan; Yann Alibert; Sérgio G Sousa; +133 Authors
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TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf
ABSTRACT We present the discovery of two exoplanets transiting TOI-836 (TIC 440887364) using data from TESS Sector 11 and Sector 38. TOI-836 is a bright (T = 8.5 mag), high proper motion (∼200 mas yr−1), low metallicity ([Fe/H]≈−0.28) K-dwarf with a mass of 0.68 ± 0.05 M⊙ and a radius of 0.67 ± 0.01 R⊙. We obtain photometric follow-up observations with a variety of facilities, and we use these data sets to determine that the inner planet, TOI-836 b, is a 1.70 ± 0.07 R⊕ super-Earth in a 3.82-d orbit, placing it directly within the so-called ‘radius valley’. The outer planet, TOI-836 c, is a 2.59 ± 0.09 R⊕ mini-Neptune in an 8.60-d orbit. Radial velocity measurements reveal that TOI-836 b has a mass of 4.5 ± 0.9 M⊕, while TOI-836 c has a mass of 9.6 ± 2.6 M⊕. Photometric observations show Transit Timing Variations (TTVs) on the order of 20 min for TOI-836 c, although there are no detectable TTVs for TOI-836 b. The TTVs of planet TOI-836 c may be caused by an undetected exterior planet.
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- Aix-Marseille University France
- University of Maryland, Baltimore United States
- Freie Universität Berlin Germany
- University of Bern Switzerland
- University of Birmingham United Kingdom
planets and satellites: detection, Aérospatiale, astronomie & astrophysique, 103003 Astronomie, Stars: individual: TOI-836 ((TIC 440887364, Astrophysics, techniques: photometric, techniques: radial velocities, QB Astronomy, 103004 Astrophysics, QC, QB, Earth and Planetary Astrophysics (astro-ph.EP), 520 Astronomy, Planets and satellites: detection, 103004 Astrophysik, planets and satellites: detection; stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152); techniques: photometric; techniques: radial velocities, 520, planets and, Stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152), Techniques: radial velocities, stars: individual: TOI-836 (TIC 440887364, Astrophysics and Astronomy, Astrophysics - Earth and Planetary, EDR3 6230733559097425152), 530 Physics, individual: TOI-836 ((TIC 440887364, GAIA EDR3 6230733559097425152) [Stars], Physique, chimie, mathématiques & sciences de la terre, GAIA, FOS: Physical sciences, 610 Medicine & health, 530, [SDU] Sciences of the Universe [physics], 103003 Astronomy, Physical, chemical, mathematical & earth Sciences, satellites: detection, Stars: individual: TOI-836 (TIC 440887364, MCC, radial velocities [Techniques], photometric [Techniques], GAIA EDR3 6230733559097425152), 500, DAS, Astronomy and Astrophysics, 620 Engineering, detection [Planets and satellites], QC Physics, [SDU]Sciences of the Universe [physics], Space and Planetary Science, Space science, astronomy & astrophysics, 570 Life sciences; biology, Techniques: photometric, Astrophysics - Earth and Planetary Astrophysics
planets and satellites: detection, Aérospatiale, astronomie & astrophysique, 103003 Astronomie, Stars: individual: TOI-836 ((TIC 440887364, Astrophysics, techniques: photometric, techniques: radial velocities, QB Astronomy, 103004 Astrophysics, QC, QB, Earth and Planetary Astrophysics (astro-ph.EP), 520 Astronomy, Planets and satellites: detection, 103004 Astrophysik, planets and satellites: detection; stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152); techniques: photometric; techniques: radial velocities, 520, planets and, Stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152), Techniques: radial velocities, stars: individual: TOI-836 (TIC 440887364, Astrophysics and Astronomy, Astrophysics - Earth and Planetary, EDR3 6230733559097425152), 530 Physics, individual: TOI-836 ((TIC 440887364, GAIA EDR3 6230733559097425152) [Stars], Physique, chimie, mathématiques & sciences de la terre, GAIA, FOS: Physical sciences, 610 Medicine & health, 530, [SDU] Sciences of the Universe [physics], 103003 Astronomy, Physical, chemical, mathematical & earth Sciences, satellites: detection, Stars: individual: TOI-836 (TIC 440887364, MCC, radial velocities [Techniques], photometric [Techniques], GAIA EDR3 6230733559097425152), 500, DAS, Astronomy and Astrophysics, 620 Engineering, detection [Planets and satellites], QC Physics, [SDU]Sciences of the Universe [physics], Space and Planetary Science, Space science, astronomy & astrophysics, 570 Life sciences; biology, Techniques: photometric, Astrophysics - Earth and Planetary Astrophysics
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