Doppler confirmation of TESS planet candidate TOI-1408.01: grazing transit and likely eccentric orbit

被引：4

作者：

Galazutdinov, G. A. ^{[1
,2
]}

Baluev, R., V ^{[3
]}

Valyavin, G. ^{[1
]}

Aitov, V ^{[1
]}

Gadelshin, D. ^{[1
]}

Valeev, A. ^{[1
,2
]}

Sendzikas, E. ^{[1
]}

Sokov, E. ^{[4
]}

Mitiani, G. ^{[1
]}

Burlakova, T. ^{[1
]}

Yakunin, I ^{[1
]}

Antonyuk, K. A. ^{[2
]}

Vlasyuk, V. ^{[1
]}

Romanyuk, I ^{[1
]}

Rzaev, A. ^{[1
]}

Yushkin, M. ^{[1
]}

Ivanova, A. ^{[5
]}

Tavrov, A. ^{[5
]}

Korablev, O. ^{[5
]}

机构：

[1] Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia

[2] Crimean Astrophys Observ, UA-298409 Nauchnyi, Crimea, Ukraine

[3] St Petersburg State Univ, Math & Mech Fac, 7-9 Univ Skaya Emb, St Petersburg 199034, Russia

[4] Russian Acad Sci, Cent Astron Observ Pulkovo, Pulkovskoe Shosse 65, St Petersburg 196140, Russia

[5] Russian Acad Sci, Space Res Inst, 84-32 Pmfsoyuznaya Str, Moscow 117997, Russia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 526卷 / 01期

关键词：

techniques: radial velocities; techniques: spectroscopic; planets and satellites: detection; stars: individual: TOI-1408; RADIAL-VELOCITY; ANALYSIS TOOL; SPECTROGRAPH; EXOPLANETS;

D O I：

10.1093/mnrasl/slad127

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report an independent Doppler confirmation of the TESS planet candidate orbiting an F-type main-sequence star TOI-1408 located 140 pc away. We present a set of radial velocities obtained with a high-resolution fibre-optic spectrograph FFOREST mounted at the SAO RAS 6-m telescope (BTA-6). Our self-consistent analysis of these Doppler data and TESS photometry suggests a grazing transit such that the planet obscures its host star by only a portion of the visible disc. Because of this degeneracy, the radius of TOI-1408.01 appears ill-determined with lower limit about similar to 1 R-Jup, significantly larger than in the current TESS solution. We also derive the planet mass of 1.69 +/- 0.20 M-Jup and the orbital period similar to 4.425 d, thus making this object a typical hot Jupiter, but with a significant orbital eccentricity of 0.259 +/- 0.026. Our solution may suggest that the planet is likely to experience a high tidal eccentricity migration at the stage of intense orbital rounding, or may indicate possible presence of other unseen companions in the system, yet to be detected.

引用

页码：L111 / L115

页数：5

共 1 条

[1] The TESS-Keck Survey. VIII. Confirmation of a Transiting Giant Planet on an Eccentric 261 Day Orbit with the Automated Planet Finder Telescope*
Dalba, Paul A.
Kane, Stephen R.
Dragomir, Diana
Villanueva, Steven, Jr.
Collins, Karen A.
Jacobs, Thomas Lee
LaCourse, Daryll M.
Gagliano, Robert
Kristiansen, Martti H.
Omohundro, Mark
Schwengeler, Hans M.
Terentev, Ivan A.
Vanderburg, Andrew
Fulton, Benjamin
Isaacson, Howard
Van Zandt, Judah
Howard, Andrew W.
Thorngren, Daniel P.
Howell, Steve B.
Batalha, Natalie M.
Chontos, Ashley
Crossfield, Ian J. M.
Dressing, Courtney D.
Huber, Daniel
Petigura, Erik A.
Robertson, Paul
Roy, Arpita
Weiss, Lauren M.
Behmard, Aida
Beard, Corey
Brinkman, Casey L.
Giacalone, Steven
Hill, Michelle L.
Lubin, Jack
Mayo, Andrew W.
Mocnik, Teo
Murphy, Joseph M. Akana
Polanski, Alex S.
Rice, Malena
Rosenthal, Lee J.
Rubenzahl, Ryan A.
Scarsdale, Nicholas
Turtelboom, Emma, V
Tyler, Dakotah
Benni, Paul
Boyce, Pat
Esposito, Thomas M.
Girardin, E.
Laloum, Didier
Lewin, Pablo
ASTRONOMICAL JOURNAL, 2022, 163 (02)

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