J 2022

The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf

BARRAGÁN, O.; D. J. ARMSTRONG; D. GANDOLFI; I. CARLEO; A. A. VIDOTTO et al.

Základní údaje

Originální název

The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf

Autoři

BARRAGÁN, O.; D. J. ARMSTRONG; D. GANDOLFI; I. CARLEO; A. A. VIDOTTO; C. D’ANGELO VILLARREAL; A. OKLOPČIĆ; H. ISAACSON; D. ODDO; K. COLLINS; M. FRIDLUND; S. G. SOUSA; C. M. PERSSON; C. HELLIER; S. HOWELL; A. HOWARD; S. REDFIELD; N. EISNER; I. Y. GEORGIEVA; D. DRAGOMIR; D. BAYLISS; L. D. NIELSEN; B. KLEIN; S. AIGRAIN; M. ZHANG; J. TESKE; J. D. TWICKEN; J. JENKINS; M. ESPOSITO; V. VAN EYLEN; F. RODLER; V. ADIBEKYAN; J. ALARCON; D. R. ANDERSON; J. M. AKANA MURPHY; D. BARRADO; S. C. C. BARROS; B. BENNEKE; F. BOUCHY; E. M. BRYANT; R. P. BUTLER; J. BURT; J. CABRERA; S. CASEWELL; P. CHATURVEDI; R. CLOUTIER; W. D. COCHRAN; J. CRANE; I. CROSSFIELD; N. CROUZET; K. I. COLLINS; F. DAI; H. J. DEEG; A. DELINE; O. D. S. DEMANGEON; X. DUMUSQUE; P. FIGUEIRA; E. FURLAN; C. GNILKA; M. R. GOAD; E. GOFFO; F. GUTIÉRREZ-CANALES; A. HADJIGEORGHIOU; Z. HARTMAN; A. P. HATZES; M. HARRIS; B. HENDERSON; T. HIRANO; S. HOJJATPANAH; S. HOYER; P. KABÁTH; J. KORTH; J. LILLO-BOX; R. LUQUE; M. MARMIER; T. MOČNIK; A. MURESAN; F. MURGAS; E. NAGEL; H. L. M. OSBORNE; A. OSBORN; H. P. OSBORN; E. PALLE; M. RAIMBAULT; G. R. RICKER; R. A. RUBENZAHL; C. STOCKDALE; N. C. SANTOS; N. SCOTT; R. P. SCHWARZ; S. SHECTMAN; M. RAIMBAULT; S. SEAGER; D. SÉGRANSAN; L. M. SERRANO; Marek SKARKA; A. M. S. SMITH; J. ŠUBJAK; T. G. TAN; S. UDRY; C. WATSON; P. J. WHEATLEY; R. WEST; J. N. WINN; S. X. WANG; A. WOLFGANG a C. ZIEGLER

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2022, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 4.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00126127

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

techniques: photometric; techniques: radial velocities; planets and satellites: individual: HD 73583 (TOI-560); stars: activity

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 9. 1. 2023 10:57, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We present the discovery and characterization of two transiting planets observed by TESS in the light curves of the young and bright (V = 9.67) star HD73583 (TOI-560). We perform an intensive spectroscopic and photometric space- and ground-based follow-up in order to confirm and characterize the system. We found that HD73583 is a young (similar to 500 Myr) active star with a rotational period of 12.08 +/- 0.11 d, and a mass and radius of 0.73 +/- 0.02 M-circle dot and 0.65 +/- 0.02 R-circle dot, respectively. HD 73583 b (P-b = 6.3980420(-0.0000062)(+0.0000067 )d) has a mass and radius of 10.2(-3.1)(+3.4) M-circle plus and 2.79 +/- 0.10 R-circle plus, respectively, which gives a density of 2.58(-0.81)(+0.95) g cm(-3). HD 73583 c (P-c = 18.87974(-0.00074)(+0.00086) d) has a mass and radius of 9.7(-1.7)(+1.8) M-circle plus and 2.39(-0.09)(+0.10) R-circle plus, respectively, which translates to a density of 3.88(-0.80)(+0.91) g cm(-3). Both planets are consistent with worlds made of a solid core surrounded by a volatile envelope. Because of their youth and host star brightness, they both are excellent candidates to perform transmission spectroscopy studies. We expect ongoing atmospheric mass-loss for both planets caused by stellar irradiation. We estimate that the detection of evaporating signatures on H and He would be challenging, but doable with present and future instruments.