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- Title
Mass Constraint of Several Transiting Planets.
- Authors
Gadelshin, D. R.; Valyavin, G. G.; Lee, Byeong-Cheol; Jeong, Gwanghui; Inwoo, Han; Galazutdinov, G. A.; Aitov, V. N.; Yakunin, I. A.; Burlakova, T. E.; Valeev, A. F.
- Abstract
Abstract—We present the measurements of masses of two exoplanets and one exoplanet candidate: the candidate we earlier confirmed in the KOI-974 system, a new TESS candidate in the TOI-1797 system, and the well-known hot Jupiter MASCARA-3b. The observations were carried out using the first prototype of the high-resolution fiber-opticspectrograph of the 6-m BTA telescope, and with the BOES spectrograph of Bohyunsan Optical Astronomy Observatory of the Korea Astronomy and Space Science Institute. The MASCARA-3b mass estimates are presented to demonstrate the performance of the new BTA spectrograph and do not differ from the measurements of other authors within the errors. The KOI-974 mass estimate upper constraint is new. Assuming a circular orbit, the exoplanet mass does not exceed 0.16 MJup. More complex orbital shapes are not visible at the radial velocity half-amplitude level of more than 20 m s−1, which classifies this exoplanet as the neptunes. Only four observations were obtained for the planetary candidate TOI-1797.01, which is insufficient for its confident classification. Meanwhile, the candidate's radial velocity values based on these four observations rule out its stellar nature.
- Subjects
ASTRONOMICAL transits; OPTICAL astronomy; ASTRONOMICAL observatories; HOT Jupiters; SPACE astronomy; SPACE sciences
- Publication
Astrophysical Bulletin, 2020, Vol 75, Issue 4, p437
- ISSN
1990-3413
- Publication type
Article
- DOI
10.1134/S1990341320040069