TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite

摘要: We present the discovery of two new 10 day period giant planets from Transiting Exoplanet Survey Satellite mission, whose masses were precisely determined using a wide diversity ground-based facilities. TOI-481 b and TOI-892 have similar radii (0.99 ± 0.01 ${R}_{{\rm{J}}}$ 1.07 0.02 ${R}_{{\rm{J}}}$, respectively), orbital periods (10.3311 days 10.6266 days, but significantly different (1.53 0.03 ${M}_{{\rm{J}}}$ versus 0.95 0.07 ${M}_{{\rm{J}}}$, respectively). Both orbit metal-rich stars ($[\mathrm{Fe}/{\rm{H}}]$ = $+0.26\pm 0.05$ dex $[\mathrm{Fe}/{\rm{H}}]$ $+0.24\pm for TOI-892, respectively) at evolutionary stages. is ${M}_{\star }$ 1.14 ${M}_{\odot }$, ${R}_{\star 1.66 ${R}_{\odot G-type star (${T}_{\mathrm{eff}}$ $5735\pm 72$ K), that with an age 6.7 Gyr, in turn-off point main sequence. on other hand, F-type dwarf $6261\pm 80$ which has mass 1.28 radius 1.39 }$. join scarcely populated region transiting gas giants longer than important to constrain theories formation structure hot Jupiters.