SIMBAD references

2021ApJ...922L...1H - Astrophys. J., 922, L1-L1 (2021/November-3)

The obliquity of HIP 67522 b: a 17 Myr old transiting hot, Jupiter-sized planet.

HEITZMANN A., ZHOU G., QUINN S.N., MARSDEN S.C., WRIGHT D., PETIT P., VANDERBURG A.M., BOUMA L.G., MANN A.W. and RIZZUTO A.C.

Abstract (from CDS):

HIP 67522 b is a 17 Myr old, close-in (Porb = 6.96 days), Jupiter-sized (R = 10 R) transiting planet orbiting a Sun-like star in the Sco-Cen OB association. We present our measurement of the system's projected orbital obliquity via two spectroscopic transit observations using the CHIRON spectroscopic facility. We present a global model that accounts for large surface brightness features typical of such young stars during spectroscopic transit observations. With a value of | λ| =5.8–5.7+2.8○^ it is unlikely that this well-aligned system is the result of a high-eccentricity-driven migration history. By being the youngest planet with a known obliquity, HIP 67522 b holds a special place in contributing to our understanding of giant planet formation and evolution. Our analysis shows the feasibility of such measurements for young and very active stars.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet astronomy - Exoplanet systems - Planetary alignment - Planet formation - Radial velocity - Transit photometry

Simbad objects: 14

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2022.08.16-06:22:00

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