The low density, hot Jupiter TOI-640 b is on a polar orbit
Emil Knudstrup, Simon H. Albrecht, Davide Gandolfi, Marcus L. Marcussen, Elisa Goffo, Luisa M. Serrano, Fei Dai, Seth Redfield, Teruyuki Hirano, Szilárd Csizmad… 展开作者
Emil Knudstrup, Simon H. Albrecht, Davide Gandolfi, Marcus L. Marcussen, Elisa Goffo, Luisa M. Serrano, Fei Dai, Seth Redfield, Teruyuki Hirano, Szilárd Csizmadia, William D. Cochran, Hans J. Deeg, Malcolm Fridlund, Kristine W. F. Lam, John H. Livingston, Rafael Luque, Norio Narita, Enric Palle, Carina M. Persson, Vincent Van Eylen
备注：
15 pages, 12 figures, accepted for publication in A&A, in press
TOI-640 b is a hot, puffy Jupiter with a mass of $0.57 \pm 0.02$ M$_{\rm J}$ and radius of $1.72 \pm 0.05$ R$_{\rm J}$, orbiting a slightly evolved F-type star with a separation of $6.33^{+0.07}_{-0.06}$ R$_\star$. Through spectroscopic in-transit observations made with the HARPS spectrograph, we measured the Rossiter-McLaughlin effect, analysing both in-transit radial velocities and the distortion of the stellar spectral lines. From these observations, we find the host star to have a projected obliquity of $λ=184\pm3^\circ$. From the TESS light curve, we measured the stellar rotation period, allowing us to determine the stellar inclination, $i_\star=23^{+3\circ}_{-2}$, meaning we are viewing the star pole-on. Combining this with the orbital inclination allowed us to calculate the host star obliquity, $ψ=104\pm2^\circ$. TOI-640 b joins a group of planets orbiting over stellar poles within the range $80^\circ-125^\circ$. The origin of this orbital configuration is not well understood.
TOI-3664 b, TOI-4034 b & TOI-6564 b: Three new hot Jupiters around stars approaching the terminal age main sequence
Queen Mary University of London（伦敦大学玛丽女王学院）；Observatoire Astronomique de l’Université de Genève（日内瓦大学天文台）；University of Warwick（华威大学）；Leiden University（莱顿大学）；Universidad Politécnica de Madrid（马德里理工大学）；Universidade do Porto（波尔图大学）
We report the discovery of two transiting planets around the bright ($V=9.9$ mag) main sequence F7 star TOI-1670 by the Transiting Exoplanet Survey Satellite. TOI-1670 b is a sub-Neptune ($R_\mathrm{b} = 2.06_{-0.15}^{+0.19}$ $R_\oplus$) on a 10.9-day orbit and TOI-1670 c is a warm Jupiter ($R_\mathrm{c} = 0.987_{-0.025}^{+0.025}$ $R_\mathrm{Jup}$) on a 40.7-day orbit. Using radial velocity observations gathered with the Tull coudé Spectrograph on the Harlan J. Smith telescope and HARPS-N on the Telescopio Nazionale Galileo, we find a planet mass of $M_\mathrm{c} = 0.63_{-0.08}^{+0.09}$ $M_\ma…
TOI-216 hosts a pair of warm, large exoplanets discovered by the TESS Mission. These planets were found to be in or near the 2:1 resonance, and both of them exhibit transit timing variations (TTVs). Precise characterization of the planets' masses and radii, orbital properties, and resonant behavior can test theories for the origins of planets orbiting close to their stars. Previous characterization of the system using the first six sectors of TESS data suffered from a degeneracy between planet mass and orbital eccentricity. Radial velocity measurements using HARPS, FEROS, and PFS break that de…
We report the discovery of ten short-period giant planets (TOI-2193A b, TOI-2207 b, TOI-2236 b, TOI-2421 b, TOI-2567 b, TOI-2570 b, TOI-3331 b, TOI-3540A b, TOI-3693 b, TOI-4137 b). All of the planets were identified as planet candidates based on periodic flux dips observed by NASA's Transiting Exoplanet Survey Satellite (TESS). The signals were confirmed to be from transiting planets using ground-based time-series photometry, high angular resolution imaging, and high-resolution spectroscopy coordinated with the TESS Follow-up Observing Program. The ten newly discovered planets orbit relativel…
We report here the discovery of a hot Jupiter at an orbital period of $3.208666\pm0.000016$ days around TOI-1789 (TYC 1962-00303-1, $TESS_{mag}$ = 9.1) based on the TESS photometry, ground-based photometry, and high-precision radial velocity observations. The high-precision radial velocity observations were obtained from the high-resolution spectrographs, PARAS at Physical Research Laboratory (PRL), India, and TCES at Thüringer Landessternwarte Tautenburg (TLS), Germany, and the ground-based transit observations were obtained using the 0.43~m telescope at PRL with the Bessel-$R$ filter. The ho…
We present the confirmation and characterization of three hot Jupiters, TOI-1181b, TOI-1516b, and TOI-2046b, discovered by the TESS space mission. The reported hot Jupiters have orbital periods between 1.4 and 2.05 days. The masses of the three planets are $1.18\pm0.14$ M$_{\mathrm{J}}$, $3.16\pm0.12$\, M$_{\mathrm{J}}$, and 2.30 $\pm 0.28$ M$_{\mathrm{J}}$, for TOI-1181b, TOI-1516b, and TOI-2046b, respectively. The stellar host of TOI-1181b is a F9IV star, whereas TOI-1516b and TOI-2046b orbit F main sequence host stars. The ages of the first two systems are in the range of 2-5 Gyrs. However,…
HARPS-N Reveals a Well-aligned Orbit for the Highly Eccentric Warm Jupiter TOI-4127 b
The University of New Mexico（新墨西哥大学）；Instituto de Astrofísica de Canarias (IAC)（加那利天体物理研究所）；Universidad de La Laguna (ULL)（拉帕鲁纳大学）；Center for Computational Astrophysics, Flatiron Institute（平顿研究所计算天体物理学中心）；University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；INAF – Osservatorio Astrofisico di Torino（意大利国家天体物理研究所都灵天文台）
Ultra-hot Jupiters are defined as giant planets with equilibrium temperatures larger than 2000 K. Most of them are found orbiting bright A-F type stars, making them extremely suitable objects to study their atmospheres using high-resolution spectroscopy. Recent studies show a variety of atoms and molecules detected in the atmospheres of this type of planets. Here we present our analysis of the newly discovered ultra-hot Jupiter TOI-1431b/MASCARA-5b, using two transit observations with the HARPS-N spectrograph and one transit observation with the EXPRES spectrograph. Analysis of the Rossiter-Mc…
Discovery and Characterization of the TOI-4468 Planetary System: A Transiting Hot Jupiter With a Lone Nearby Outer Companion
University of Wisconsin–Madison（威斯康星大学麦迪逊分校）；NASA Goddard Space Flight Center（NASA戈达德太空飞行中心）；Center for Astrophysics | Harvard & Smithsonian（哈佛与史密森尼天体物理中心）；Michigan State University（密歇根州立大学）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘内科克天文学研究所）；ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所ASTRON）；Centre for Astrophysics, University of Southern Queensland（南昆士兰大学天体物理学中心）；Astrophysics & Space Institute, Schmid（施密德天体物理学与空间研究所）
We report the confirmation and characterisation of TOI-1820~b, TOI-2025~b, and TOI-2158~b, three Jupiter-sized planets on short-period orbits around G-type stars detected by TESS. Through our ground-based efforts using the FIES and Tull spectrographs, we have confirmed these planets and characterised their orbits, and find periods of around $4.9$~d, $8.9$~d, and $8.6$~d for TOI-1820~b, TOI-2025~b, and TOI-2158~b, respectively. The sizes of the planets range from 0.96 to 1.14 Jupiter radii, and their masses are in the range from 0.8 to 4.4 Jupiter masses. For two of the systems, namely TOI-2025…
CAFE follow-up of TESS hot Jupiter candidates left behind: I. Five newly confirmed planets and a false positive
Center for Astrophysics | Harvard & Smithsonian（哈佛-史密森尼天体物理中心）；NASA Exoplanet Science Institute-Caltech/IPAC（NASA系外行星科学研究所-加州理工学院/IPAC）；Institut d’astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie（巴黎天体物理学研究所，CNRS UMR7095，皮埃尔和玛丽·居里大学）；Observatoire de Haute-Provence（上普罗旺斯天文台）；Department of Physics & Astronomy, University of California Los Angeles（加州大学洛杉矶分校物理与天文学系）；Thüringer Landessternwarte Tautenburg（图林根州陶滕堡天文台）；Laboratoire d’astrophysique de Bordeaux, Univ. Bordeaux, CNRS（波尔多天体物理学实验室，波尔多大学，CNRS）；Institut universitaire de France (IUF)（法国大学学院）；Department of Astrophysical Sciences, Princeton University（普林斯顿大学天体物理科学系）；NASA Ames Research Center（NASA艾姆斯研究中心）
PEPSI Investigation, Retrieval, and Atlas of Numerous Giant Atmospheres (PIRANGA). I. The Ubiquity of Fe I Emission and Inversions in Ultra Hot Jupiter Atmospheres
本文利用 PEPSI 光谱仪对两颗超热木星进行高分辨率观测，探测到 Fe I 等发射线，证明其大气普遍存在逆温层，并提出原子铁是主导光学不透明度来源。
Discovery of an Eccentric Hot Super-Jupiter Leaving the Transiting Geometry of the Early-A-type star TOI-1355
The University of Tokyo（东京大学）；Komaba Institute for Science, The University of Tokyo（东京大学小柴科学研究所）；Astrobiology Center（天体生物学中心）；Instituto de Astrofísica de Canarias (IAC)（加那利天体物理研究所）；Department of Earth and Planetary Sciences, Institute of Science Tokyo（东京科学地球行星科学学院）；Okayama Observatory, Kyoto University（京都大学冈山天文台）
We confirm the planetary nature of two gas giants discovered by TESS to transit M dwarfs. TOI-3714 ($V=15.24,~J=11.74$) is an M2 dwarf hosting a hot Jupiter ($M_p=0.70 \pm 0.03~\mathrm{M_J}$ and $R_p=1.01 \pm 0.03~\mathrm{R_J}$) on an orbital period of $2.154849 \pm 0.000001$ days with a resolved white dwarf companion. TOI-3629 ($V=14.63,~J=11.42$) is an M1 dwarf hosting a hot Jupiter ($M_p=0.26 \pm 0.02~\mathrm{M_J}$ and $R_p=0.74 \pm 0.02~\mathrm{R_J}$) on an orbital period of $3.936551_{-0.000006}^{+0.000005}$ days. We characterize each transiting companion using a combination of ground-bas…
We report the discovery of TOI-4562 b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (< $700$ Myr). This planet stands out because of its unusually long orbital period for transiting planets with known masses ($P_{\mathrm{orb}}$ = $225.11781^{+0.00025}_{-0.00022}$ days), and because it has a substantial eccentricity ($e$ = $0.76^{+0.02}_{-0.02}$). The location of TOI-4562 near the southern continuous viewing zone of TESS allowed observations throughout 25 sectors, enabling an unambiguous period measurement from TESS alone. Alongside t…
TOI-2147 b and TOI-6019 b: Two eccentric warm Jupiters detected and characterized with TESS and MaHPS
Ludwig-Maximilians-Universität München（慕尼黑大学）；Max-Planck Institute for Extraterrestrial Physics（马克斯·普朗克地外物理研究所）；European Southern Observatory (ESO)（欧洲南方天文台）；Lund University（隆德大学）
SOPHIE and TESS characterization of fourteen TESS Objects of Interest: nine planetary systems and five low-mass stellar companions
Institut d’astrophysique de Paris, UMR 7095 CNRS université pierre et marie curie（巴黎天体物理研究所）；Observatoire de Haute-Provence, CNRS, Université d’Aix-Marseille（上普罗旺斯天文台）；Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto（葡萄牙大学空间与天体物理研究所）；Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto（波尔图大学理学院物理与天文系）；Univ. Grenoble Alpes, CNRS, IPAG（格勒诺布尔阿尔卑斯大学）；LIRA, Université Paris Cité, Observatoire de Paris, Université PSL, Sorbonne Université, CY Cergy Paris Université, CNRS（巴黎西岱大学/巴黎天文台/巴黎文理研究大学/索邦大学/塞吉-蓬瓦兹大学）；Center for Astrophysics | Harvard & Smithsonian（哈佛-史密森天体物理中心）；Observatoire de Genève, Université de Genève（日内瓦大学天文台）；Sternberg Astronomical Institute of Lomonosov M（罗蒙诺索夫莫斯科国立大学斯滕伯格天文研究所）
We present the discovery of TOI-1518b -- an ultra-hot Jupiter orbiting a bright star $V = 8.95$. The transiting planet is confirmed using high-resolution optical transmission spectra from EXPRES. It is inflated, with $R_p = 1.875\pm0.053\,R_{\rm J}$, and exhibits several interesting properties, including a misaligned orbit (${240.34^{+0.93}_{-0.98}}$ degrees) and nearly grazing transit ($b =0.9036^{+0.0061}_{-0.0053}$). The planet orbits a fast-rotating F0 host star ($T_{\mathrm{eff}} \simeq 7300$ K) in 1.9 days and experiences intense irradiation. Notably, the TESS data show a clear secondary…
Searching for GEMS: Three warm Saturns and a super-Jupiter orbiting four early M-dwarfs
University of California, Irvine（加州大学尔湾分校）；Carnegie Institution for Science（卡内基科学机构）；Southeastern Universities Research Association（东南大学研究协会）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）
A Pair of Warm Saturn-mass Planets near the 2:1 Mean Motion Resonance around TOI-3850
University of British Columbia（不列颠哥伦比亚大学）；McGill University（麦吉尔大学）；Vanderbilt University（范德堡大学）；NASA Ames Research Center（美国宇航局艾姆斯研究中心）；University of Chicago（芝加哥大学）；Gemini Observatory/NSF NOIRLab（吉米天文台/美国国家光学红外天文研究实验室）
High-eccentricity tidal migration is a possible way for giant planets to be emplaced in short-period orbits. If it commonly operates, one would expect to catch proto-Hot Jupiters on highly elliptical orbits that are undergoing high-eccentricity tidal migration. As of yet, few such systems have been discovered. Here, we introduce TOI-3362b (TIC-464300749b), an 18.1-day, 5 $M_{\rm Jup}$ planet orbiting a main-sequence F-type star that is likely undergoing high-eccentricity tidal migration. The orbital eccentricity is 0.815$^{+0.023}_{-0.032}$. With a semi-major axis of 0.153$^{+0.002}_{-0.003}$ …
