نتائج البحث - "Keivan G. Stassun"

61

تقرير

TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data

المؤلفون: Veselin B. Kostov, Brian P. Powell, Jerome A. Orosz, William F. Welsh, William D. Cochran, Karen A. Collins, Michael Endl, Coel Hellier, David W. Latham, Phillip MacQueen, Joshua Pepper, Billy Quarles, Lalitha Sairam, Guillermo Torres, Robert F. Wilson, Serge Bergeron, Pat Boyce, Allyson Bieryla, Robert Buchheim, Caleb Ben Christiansen, David R. Ciardi, Kevin I. Collins, Dennis M. Conti, Scott Dixon, Pere Guerra, Nader Haghighipour, Jeffrey Herman, Eric G. Hintz, Ward S. Howard, Eric L. N. Jensen, John F. Kielkopf, Ethan Kruse, Nicholas M. Law, David Martin, Pierre F. L. Maxted, Benjamin T. Montet, Felipe Murgas, Matt Nelson, Gregory Olmschenk, Sebastian Otero, Robert Quimby, Michael Richmond, Richard P. Schwarz, Avi Shporer, Keivan G. Stassun, Denise C. Stephens, Amaury H. M. J. Triaud, Joe Ulowetz, Bradley S. Walter, Edward Wiley, David Wood, Mitchell Yenawine, Eric Agol, Thomas Barclay, Thomas G. Beatty, Isabelle Boisse, Douglas A. Caldwell, Jessie Christiansen, Knicole D. Colon, Magali Deleuil, Laurance Doyle, Michael Fausnaugh, Gábor Fűrész, Emily A. Gilbert, Guillaume Hébrard, David J. James, Jon Jenkins, Stephen R. Kane, Richard C. Kidwell Jr, Ravi Kopparapu, Gongjie Li, Jack J. Lissauer, Michael B. Lund, Steve R. Majewski, Tsevi Mazeh, Samuel N. Quinn, Elisa Quintana, George R Ricker, Joseph E. Rodriguez, Jason Rowe, Alexander Santerne, Joshua Schlieder, Sara Seager, Matthew R. Standing, Daniel J. Stevens, Eric B. Ting, Roland Vanderspek, Joshua N. Winn

المصدر: The Astronomical Journal. 162(6)

مصطلحات موضوعية: Astronomy

الوصف: We report the first discovery of a transiting circumbinary planet detected from a single sector of Transiting Exoplanet Survey Satellite (TESS) data. During Sector 21, the planet TIC 172900988b transited the primary star and then five days later it transited the secondary star. The binary is itself eclipsing, with a period P ≈ 19.7 days and an eccentricity e ≈ 0.45. Archival data from ASAS-SN, Evryscope, KELT, and SuperWASP reveal a prominent apsidal motion of the binary orbit, caused by the dynamical interactions between the binary and the planet. A comprehensive photodynamical analysis of the TESS, archival and follow-up data yields stellar masses and radii of M(1) = 1.2384 ± 0.0007 Mꙩ and R(1) = 1.3827 ± 0.0016 Rꙩ for the primary and M(2) = 1.2019 ± 0.0007 Mꙩ and R(2) = 1.3124 ± 0.0012 Rꙩ for the secondary. The radius of the planet is R(3) = 11.25 ± 0.44 Rꚛ (1.004 ± 0.039R(Jup)). The planet’s mass and orbital properties are not uniquely determined—there are six solutions with nearly equal likelihood. Specifically, we find that the planet’s mass is in the range of 824 ≲ M3 ≲ 981 Mꚛ (2.65 ≲ M3 ≲ 3.09M(Jup)), its orbital period could be 188.8, 190.4, 194.0, 199.0, 200.4, or 204.1 days, and the eccentricity is between 0.02 and 0.09. At V = 10.141 mag, the system is accessible for high-resolution spectroscopic observations, e.g., the Rossiter–McLaughlin effect and transit spectroscopy.

URL الوصول: https://ntrs.nasa.gov/citations/20220000670

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62

Another shipment of six short-period giant planets from TESS

المؤلفون: Joseph E Rodriguez, Samuel N Quinn, Andrew Vanderburg, George Zhou, Jason D Eastman, Erica Thygesen, Bryson Cale, David R Ciardi, Phillip A Reed, Ryan J Oelkers, Karen A Collins, Allyson Bieryla, David W Latham, Erica J Gonzales, B Scott Gaudi, Coel Hellier, Matías I Jones, Rafael Brahm, Kirill Sokolovsky, Jack Schulte, Gregor Srdoc, John Kielkopf, Ferran Grau Horta, Bob Massey, Phil Evans, Denise C Stephens, Kim K McLeod, Nikita Chazov, Vadim Krushinsky, Mourad Ghachoui, Boris S Safonov, Cayla M Dedrick, Dennis Conti, Didier Laloum, Steven Giacalone, Carl Ziegler, Pere Guerra Serra, Ramon Naves Nogues, Felipe Murgas, Edward J Michaels, George R Ricker, Roland K Vanderspek, Sara Seager, Joshua N Winn, Jon M Jenkins, Brett Addison, Owen Alfaro, D R Anderson, Elias Aydi, Thomas G Beatty, Timothy R Bedding, Alexander A Belinski, Zouhair Benkhaldoun, Perry Berlind, Cullen H Blake, Michael J Bowen, Brendan P Bowler, Andrew W Boyle, Dalton Branson, César Briceño, Michael L Calkins, Emma Campbell, Jessie L Christiansen, Laura Chomiuk, Kevin I Collins, Matthew A Cornachione, Ahmed Daassou, Courtney D Dressing, Gilbert A Esquerdo, Dax L Feliz, William Fong, Akihiko Fukui, Tianjun Gan, Holden Gill, Maria V Goliguzova, Jarrod Hansen, Thomas Henning, Eric G Hintz, Melissa J Hobson, Jonathan Horner, Chelsea X Huang, David J James, Jacob S Jensen, Samson A Johnson, Andrés Jordán, Stephen R Kane, Khalid Barkaoui, Myung-Jin Kim, Kingsley Kim, Rudolf B Kuhn, Nicholas Law, Pablo Lewin, Hui-Gen Liu, Michael B Lund, Andrew W Mann, Nate McCrady, Matthew W Mengel, Jessica Mink, Lauren G Murphy, Norio Narita, Patrick Newman, Jack Okumura, Hugh P Osborn, Martin Paegert, Enric Palle, Joshua Pepper, Peter Plavchan, Alexander A Popov, Markus Rabus, Jessica Ranshaw, Jennifer A Rodriguez, Dong-Goo Roh, Michael A Reefe, Arjun B Savel, Richard P Schwarz, Avi Shporer, Robert J Siverd, David H Sliski, Keivan G Stassun, Daniel J Stevens, Abderahmane Soubkiou, Eric B Ting, C G Tinney, Noah Vowell, Payton Walton, R G West, Maurice L Wilson, Robert A Wittenmyer, Justin M Wittrock, Shania Wolf, Jason T Wright, Hui Zhang, Evan Zobel

المصدر: Monthly Notices of the Royal Astronomical Society. 521:2765-2785

مصطلحات موضوعية: Earth and Planetary Astrophysics (astro-ph.EP), Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics - Earth and Planetary Astrophysics

الوصف: We present the discovery and characterization of six short-period, transiting giant planets from NASA's Transiting Exoplanet Survey Satellite (TESS) -- TOI-1811 (TIC 376524552), TOI-2025 (TIC 394050135), TOI-2145 (TIC 88992642), TOI-2152 (TIC 395393265), TOI-2154 (TIC 428787891), & TOI-2497 (TIC 97568467). All six planets orbit bright host stars (8.9
Comment: 20 Pages, 6 Figures, 8 Tables, Accepted by MNRAS

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36555a6a41812431a26aa1c34695e883
https://doi.org/10.1093/mnras/stad595

63

تقرير

TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★

المؤلفون: Matías R Díaz, James S Jenkins, Davide Gandolfi, Eric D Lopez, Maritza G Soto, Pía Cortés-Zuleta, Zaira M Berdiñas, Keivan G Stassun, Karen A Collins, José I Vines, Carl Ziegler, Malcom Fridlund, Eric L N Jensen, Felipe Murgas, Alexandre Santerne, Paul A Wilson, Massimiliano Esposito, Artie P Hatzes, Marshall C Johnson, Kristine W F Lam, John H Livingston, Vincent Van Eylen, Norio Narita, Cesar Briceño, Kevin I Collins, Szilárd Csizmadia, Michael Fausnaugh, Tianjun Gan, Rafael A García, Iska Georgieva, Ana Glidden, Lucía González-Cuesta, Jon M Jenkins, David W Latham, Nicholas M Law, Andrew W Mann, Savita Mathur, Ismael Mireles, Robert Morris, Enric Pallé, Carina M Persson, George Ricker, Stephen Rinehart, Mark E Rose, Sara Seager, Jeffrey C Smith, Thiam-Guan Tan, Andrei Tokovinin, Andrew Vanderburg, Roland Vanderspek, Joshua N Winn, Daniel A Yahalomi

المصدر: Monthly Notices of the Royal Astronomical Society. 493(1):973-985

URL الوصول: https://ntrs.nasa.gov/citations/27550041319580

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64

تقرير

TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in Its Atmosphere

المصدر: The Astrophysical Journal. 162(5)

مصطلحات موضوعية: Astronomy

الوصف: 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 Rp = 1.875 ± 0.053 RJ, 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 (Teff ≃ 7300 K) in 1.9 days and experiences intense irradiation. Notably, the TESS data show a clear secondary eclipse with a depth of 364 ± 28 ppm and a significant phase-curve signal, from which we obtain a relative day–night planetary flux difference of roughly 320 ppm and a 5.2σ detection of ellipsoidal distortion on the host star. Prompted by recent detections of atomic and ionized species in ultra-hot Jupiter atmospheres, we conduct an atmospheric cross-correlation analysis. We detect neutral iron (5.2σ), at K(p) = 157 (+68, -44) km/s and V(sys) = -16 (+2, -4), adding another object to the small sample of highly irradiated gas-giant planets with Fe detections in transmission. Detections so far favor particularly inflated gas giants with radii ≳1.78 R(J), which may be due to observational bias. With an equilibrium temperature of T(eq) = 2492 ± 38 K and a measured dayside brightness temperature of 3237 ± 59 K (assuming zero geometric albedo), TOI-1518b is a promising candidate for future emission spectroscopy to probe for a thermal inversion.

URL الوصول: https://ntrs.nasa.gov/citations/20220002234

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65

تقرير

Populating the brown dwarf and stellar boundary: Five stars with transiting companions near the hydrogen-burning mass limit

المؤلفون: Nolan Grieves, François Bouchy, Monika Lendl, Theron Carmichael, Ismael Mireles, Avi Shporer, Kim K. McLeod, Karen A. Collins, Rafael Brahm, Keivan G. Stassun, Sam Gill, Luke G. Bouma, Tristan Guillot, Marion Cointepas, Leonardo A. Dos Santos, Sarah L. Casewell, Jon M. Jenkins, Thomas Henning, Louise D. Nielsen, Angelica Psaridi, Stéphane Udry, Damien Ségransan, Jason D. Eastman, George Zhou, Lyu Abe, Abelkrim Agabi, Gaspar Bakos, David Charbonneau, Kevin I. Collins, Knicole D. Colon, Nicolas Crouzet, Georgina Dransfield, Phil Evans, Robert F. Goeke, Rhodes Hart, Jonathan M. Irwin, Eric L. N. Jensen, Andrés Jordán, John F. Kielkopf, David W. Latham, Wenceslas Marie-Sainte, Djamel Mékarnia, Peter Nelson, Samuel N. Quinn, Don J. Radford, David R. Rodriguez, Pamela Rowden, François–Xavier Schmider, Richard P. Schwarz, Jeffrey C. Smith, Chris Stockdale, Olga Suarez, Thiam-Guan Tan, Amaury H. M. J. Triaud, William Waalkes, Geof Wingham

المصدر: Astronomy & Astrophysics. 652

مصطلحات موضوعية: Astrophysics

الوصف: We report the discovery of five transiting companions near the hydrogen-burning mass limit in close orbits around main sequence stars originally identified by the Transiting Exoplanet Survey Satellite (TESS) as TESS objects of interest (TOIs): TOI-148, TOI-587, TOI-681, TOI-746, and TOI-1213. Using TESS and ground-based photometry as well as radial velocities from the CORALIE, CHIRON, TRES, and FEROS spectrographs, we found the companions have orbital periods between 4.8 and 27.2 days, masses between 77 and 98 MJup , and radii between 0.81 and 1.66 RJup . These targets have masses near the uncertain lower limit of hydrogen core fusion (~73-96 MJup ), which separates brown dwarfs and low-mass stars. We constrained young ages for TOI-587 (0.2 ± 0.1 Gyr) and TOI-681 (0.17 ± 0.03 Gyr) and found them to have relatively larger radii compared to other transiting companions of a similar mass. Conversely we estimated older ages for TOI-148 and TOI-746 and found them to have relatively smaller companion radii. With an effective temperature of 9800 ± 200 K, TOI-587 is the hottest known main-sequence star to host a transiting brown dwarf or very low-mass star. We found evidence of spin-orbit synchronization for TOI-148 and TOI-746 as well as tidal circularization for TOI-148. These companions add to the population of brown dwarfs and very low-mass stars with well measured parameters ideal to test formation models of these rare objects, the origin of the brown dwarf desert, and the distinction between brown dwarfs and hydrogen-burning main sequence stars.

URL الوصول: https://ntrs.nasa.gov/citations/20210025358

66

تقرير

TOI-1231 b: A Temperate, Neptune-sized Planet Transiting the Nearby M3 Dwarf NLTT 24399

المؤلفون: Jennifer A. Burt, Diana Dragomir, Paul Mollière, Allison Ann Youngblood, Antonio García Muñoz, John McCann, Laura Kreidberg, Chelsea X. Huang, Karen A. Collins, Jason D. Eastman, Lyu Abe, Jose M. Almenara, Ian J. M. Crossfield, Carl Ziegler, Joseph E. Rodriguez, Eric E. Mamajek, Keivan G. Stassun, Samuel P. Halverson, Steven Villanueva Jr, R. Paul Butler, Sharon Xuesong Wang, Richard P Schwarz, George R. Ricker, Roland Vanderspek, David W. Latham, S. Seager, Joshua N. Winn, Jon M. Jenkins, Abdelkrim Agabi, Xavier Bonfils, David Ciardi, Marion Cointepas, Jeffrey D. Crane, Nicolas Crouzet, Georgina Dransfield, Fabo Feng, Elise Furlan, Tristan Guillot, Arvind F. Gupta, Steve B. Howell, Eric L. N. Jensen, Nicholas Law, Andrew W. Mann, Wenceslas Marie-Sainte, Rachel A. Matson, Elisabeth C. Matthews, Djamel Mékarnia, Joshua Pepper, Nic Scott, Stephen A. Shectman, Joshua E. Schlieder, François-Xavier Schmider, Daniel J. Stevens, Johanna K. Teske, Amaury H. M. J. Triaud, David Charbonneau, Zachory K. Berta-Thompson, Christopher J. Burke, Tansu Daylan, Thomas Barclay, Bill Wohler, C. E. Brasseur

المصدر: The Astronomical Journal. 162(3)

مصطلحات موضوعية: Astronomy, Astrophysics

الوصف: We report the discovery of a transiting, temperate, Neptune-sized exoplanet orbiting the nearby (d = 27.5 pc), M3V star TOI-1231 (NLTT 24399, L 248-27, 2MASS J10265947-5228099). The planet was detected using photometric data from the Transiting Exoplanet Survey Satellite and followed up with observations from the Las Cumbres Observatory and the Antarctica Search for Transiting ExoPlanets program. Combining the photometric data sets, we find that the newly discovered planet has a radius of 3.65(+0.16,-0.15)Rꚛ and an orbital period of 24.246 days. Radial velocity measurements obtained with the Planet Finder Spectrograph on the Magellan Clay telescope confirm the existence of the planet and lead to a mass measurement of 15.5 ± 3.3 Mꚛ. With an equilibrium temperature of just 330 K, TOI-1231 b is one of the coolest small planets accessible for atmospheric studies thus far, and its host star's bright near-infrared brightness (J = 8.88, Ks = 8.07) makes it an exciting target for the Hubble Space Telescope and the James Webb Space Telescope. Future atmospheric observations would enable the first comparative planetology efforts in the 250–350 K temperature regime via comparisons with K2-18 b. Furthermore, TOI-1231's high systemic radial velocity (70.5 km/s) may allow for the detection of low-velocity hydrogen atoms escaping the planet by Doppler, shifting the H i Lyα stellar emission away from the geocoronal and interstellar medium absorption features.

URL الوصول: https://ntrs.nasa.gov/citations/20210026588

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67

دورية أكاديمية

High atmospheric metal enrichment for a Saturn-mass planet

المؤلفون: Jacob L. Bean, Qiao Xue, Prune C. August, Jonathan Lunine, Michael Zhang, Daniel Thorngren, Shang-Min Tsai, Keivan G. Stassun, Everett Schlawin, Eva-Maria Ahrer, Jegug Ih, Megan Mansfield

المصدر: Nature, Nature. 618(7963):43-46

الوصف: Atmospheric metal enrichment (that is, elements heavier than helium, also called ‘metallicity’) is a key diagnostic of the formation of giant planets1–3. The giant planets of the Solar System show an inverse relationship between mass and both their bulk metallicities and atmospheric metallicities. Extrasolar giant planets also display an inverse relationship between mass and bulk metallicity4. However, there is significant scatter in the relationship and it is not known how atmospheric metallicity correlates with either planet mass or bulk metallicity. Here we show that the Saturn-mass exoplanet HD 149026b (refs. 5–9) has an atmospheric metallicity 59–276 times solar (at 1σ), which is greater than Saturn’s atmospheric metallicity of roughly 7.5 times solar10 at more than 4σ confidence. This result is based on modelling CO2 and H2O absorption features in the thermal emission spectrum of the planet measured by the James Webb Space Telescope. HD 149026b is the most metal-rich giant planet known, with an estimated bulk heavy element abundance of 66 ± 2% by mass11,12. We find that the atmospheric metallicities of both HD 149026b and the Solar System giant planets are more correlated with bulk metallicity than planet mass.

الإتاحة: https://ideas.repec.org/a/nat/nature/v618y2023i7963d10.1038_s41586-023-05984-y.html

68

تقرير

TOI-1634 b: An Ultra-short-period Keystone Planet Sitting inside the M-dwarf Radius Valley

المصدر: The Astronomical Journal. 162(2)

مصطلحات موضوعية: Astrophysics

URL الوصول: https://ntrs.nasa.gov/citations/20210026373

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69

تقرير

TESS Hunt for Young and Maturing Exoplanets (THYME). V. A Sub-Neptune Transiting a Young Star in a Newly Discovered 250 Myr Association

المصدر: The Astronomical Journal. 161(4)

مصطلحات موضوعية: Astrophysics

الوصف: The detection and characterization of young planetary systems offer a direct path to study the processes that shape planet evolution. We report on the discovery of a sub-Neptune-sized planet orbiting the young star HD 110082 (TOI-1098). Transit events we initially detected during TESS Cycle 1 are validated with time-series photometry from Spitzer. High-contrast imaging and high-resolution, optical spectra are also obtained to characterize the stellar host and confirm the planetary nature of the transits. The host star is a late-F dwarf (M⁎ = 1.2Mꙩ) with a low-mass, M dwarf binary companion (M⁎ = 0.26Mꙩ) separated by nearly one arcminute (∼6200 au). Based on its rapid rotation and Lithium absorption, HD 110082 is young, but is not a member of any known group of young stars (despite proximity to the Octans association). To measure the age of the system, we search for coeval, phase-space neighbors and compile a sample of candidate siblings to compare with the empirical sequences of young clusters and to apply quantitative age-dating techniques. In doing so, we find that HD 110082 resides in a new young stellar association we designate MELANGE-1, with an age of 250(+50, -70) Myr. Jointly modeling the TESS and Spitzer light curves, we measure a planetary orbital period of 10.1827 days and radius of R(p) = 3.2 ± 0.1Rꚛ. HD 110082 b’s radius falls in the largest 12% of field-age systems with similar host-star mass and orbital period. This finding supports previous studies indicating that young planets have larger radii than their field-age counterparts.

URL الوصول: https://ntrs.nasa.gov/citations/20210015717

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70

تقرير

TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images

المؤلفون: Joseph E. Rodriguez, Samuel N. Quinn, George Zhou, Andrew Vanderburg, Louise D. Nielsen, Robert A. Wittenmyer, Rafael Brahm, Phillip A. Reed, Chelsea X. Huang6, Sydney Vach, David R. Ciardi, Ryan J. Oelkers, Keivan G. Stassun, Coel Hellier, B. Scott Gaudi, Jason D. Eastman, Karen A. Collins, Allyson Bieryla, Sam Christian, David W. Latham, Ilaria Carleo, Duncan J. Wright, Elisabeth Matthews, Erica J. Gonzales, Carl Ziegler, Courtney D. Dressing, Steve B. Howell, Thiam-Guan Tan, Justin Wittrock, Peter Plavchan, Kim K. McLeod, David Baker, Gavin Wang, Don J. Radford, Richard P. Schwarz, Massimiliano Esposito, George R. Ricker, Roland K. Vanderspek, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Brett Addison, D. R. Anderson, Thomas Barclay, Thomas G. Beatty, Perry Berlind, Francois Bouchy, Michael Bowen, Brendan P. Bowler, C. E. Brasseur, César Briceño, Douglas A. Caldwell, Michael L. Calkins, Scott Cartwright, Priyanka Chaturvedi, Guillaume Chaverot, Sudhish Chimaladinne, Jessie L. Christiansen, Kevin I. Collins, Ian J. M. Crossfield, Kevin Eastridge, Néstor Espinoza, Gilbert A. Esquerdo, Dax L. Feliz, Tyler Fenske, William Fong, Tianjun Gan, Steven Giacalone, Holden Gill, Lindsey Gordon, A. Granados, Nolan Grieves, Eike W. Guenther, Natalia Guerrero, Thomas Henning, Christopher E. Henze, Katharine Hesse, Melissa J. Hobson, Jonathan Horner, David J. James, Eric L. N. Jensen, Mary Jimenez, Andres Jordan, Stephen R. Kane, John Kielkopf, Kingsley Kim, Rudolf B. Kuhn, Natasha Latouf2, Nicholas M. Law, Alan M. Levine, Michael B. Lund, Andrew W. Mann, Shude Mao, Rachel A. Matson, Matthew W. Mengel, Jessica Mink, Patrick Newman2, Tanner O Dwyer, Jack Okumura, Enric Palle, Joshua Pepper, Elisa V. Quintana, Paula Sarkis, Arjun B. Savel, Joshua E. Schlieder, Chloe Schnaible, Avi Shporer, Ramotholo Sefako, Julia V. Seidel, Robert J. Siverd, Brett Skinner, Manu Stalport, Daniel J. Stevens, Caitlin Stibbards, C. G. Tinney, R. G. West, Daniel A. Yahalomi, Hui Zhang

المصدر: The Astrophysical Journal. 161(4)

مصطلحات موضوعية: Astronomy

الوصف: We present the discovery and characterization of five hot and warm Jupiters—TOI-628 b(TIC 281408474; HD288842), TOI-640 b(TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b (TIC409794137), and TOI-1601 b (TIC 139375960)—based on data from NASA’s Transiting Exoplanet Survey Satellite(TESS). The five planets were identified from the full-frame images and were confirmed through a series of photometric and spectroscopic follow-up observations by the TESS Follow-up Observing Program Working Group. The planets are all Jovian size (RP=1.01–1.77RJ) and have masses that range from 0.85 to 6.33MJ. The host stars of these systems have F and G spectral types (5595Teff 6460 K)and are all relatively bright (9.51.7RJ, possibly a result of its host star’s evolution) and resides on an orbit with a period longer than 5 days. TOI-628 b is the most massive, hot Jupiter discovered to date by TESS with a measured mass of-+6.310.300.28MJ and a statistically significant, nonzero orbital eccentricity of e=-+0.0740.0220.021. This planet would not have had enough time to circularize through tidal forces from our analysis, suggesting that it might be remnant eccentricity from its migration. The longest-period planet in this sample, TOI-1478 b (P=10.18 days), is a warm Jupiter in a circular orbit around a near-solar analog. NASA’s TESS mission is continuing to increase the sample of well-characterized hot and warm Jupiters, complementing its primary mission goals.

URL الوصول: https://ntrs.nasa.gov/citations/20210026357

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