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Full-Text Articles in Physical Sciences and Mathematics
Toi-1201 B: A Mini-Neptune Transiting A Bright And Moderately Young M Dwarf, D. Kossakowski, J. Kemmer, P. Bluhm, S. Stock, J. A. Caballero, V. J. S. Béjar, C. Cardona Guillén, N. Lodieu, K. A. Collins, M. Oshagh, M. Schlecker, N. Espinoza, E. Pallé, T. Henning, L. Kreidberg, M. Kürster, P. J. Amado, D. R. Anderson, J. C. Morales, S. Cartwright, D. Charbonneau, P. Chaturvedi, C. Cifuentes, D. M. Conti, M. Cortés-Contreras, S. Dreizler, D. Galadí-Enríquez, P. Guerra, R. Hart, C. Hellier, C. Henze, E. Herrero, S. V. Jeffers, J. M. Jenkins, Eric L.N. Jensen, A. Kaminski, J. F. Kielkopf, M. Kunimoto, M. Lafarga, D. W. Latham, J. Lillo-Box, R. Luque, K. Molaverdikhani, D. Montes, G. Morello, E. H. Morgan, G. Nowak, A. Pavlov, M. Perger, E. V. Quintana, A. Quirrenbach, S. Reffert, A. Reiners, G. Ricker, I. Ribas, C. Rodríguez López, M. R. Zapatero Osorio, S. Seager, P. Schöfer, A. Schweitzer, T. Trifonov, S. Vanaverbeke, R. Vanderspek, R. West, J. Winn, M. Zechmeister
Toi-1201 B: A Mini-Neptune Transiting A Bright And Moderately Young M Dwarf, D. Kossakowski, J. Kemmer, P. Bluhm, S. Stock, J. A. Caballero, V. J. S. Béjar, C. Cardona Guillén, N. Lodieu, K. A. Collins, M. Oshagh, M. Schlecker, N. Espinoza, E. Pallé, T. Henning, L. Kreidberg, M. Kürster, P. J. Amado, D. R. Anderson, J. C. Morales, S. Cartwright, D. Charbonneau, P. Chaturvedi, C. Cifuentes, D. M. Conti, M. Cortés-Contreras, S. Dreizler, D. Galadí-Enríquez, P. Guerra, R. Hart, C. Hellier, C. Henze, E. Herrero, S. V. Jeffers, J. M. Jenkins, Eric L.N. Jensen, A. Kaminski, J. F. Kielkopf, M. Kunimoto, M. Lafarga, D. W. Latham, J. Lillo-Box, R. Luque, K. Molaverdikhani, D. Montes, G. Morello, E. H. Morgan, G. Nowak, A. Pavlov, M. Perger, E. V. Quintana, A. Quirrenbach, S. Reffert, A. Reiners, G. Ricker, I. Ribas, C. Rodríguez López, M. R. Zapatero Osorio, S. Seager, P. Schöfer, A. Schweitzer, T. Trifonov, S. Vanaverbeke, R. Vanderspek, R. West, J. Winn, M. Zechmeister
Physics & Astronomy Faculty Works
We present the discovery of a transiting mini-Neptune around TOI-1201, a relatively bright and moderately young early M dwarf (J ≈ 9.5 mag, ~600–800 Myr) in an equal-mass ~8 arcsecond-wide binary system, using data from the Transiting Exoplanet Survey Satellite, along with follow-up transit observations. With an orbital period of 2.49 d, TOI-1201 b is a warm mini-Neptune with a radius of Rb = 2.415 ± 0.090 R⊕. This signal is also present in the precise radial velocity measurements from CARMENES, confirming the existence of the planet and providing a planetary mass of Mb = …
Toi-674b: An Oasis In The Desert Of Exo-Neptunes Transiting A Nearby M Dwarf, F. Murgas, N. Astudillo-Defru, X. Bonfils, I. Crossfield, J. M. Almenara, J. Livingston, K. G. Stassun, J. Korth, J. Orell-Miquel, G. Morello, J. D. Eastman, J. J. Lissauer, S. R. Kane, F. Y. Morales, M. W. Werner, V. Gorjian, B. Benneke, D. Dragomir, E. C. Matthews, S. B. Howell, D. Ciardi, E. Gonzales, R. Matson, C. Beichman, J. Schlieder, K. A. Collins, K. I. Collins, Eric L.N. Jensen, P. Evans, F. J. Pozuelos, M. Gillon, E. Jehin, K. Barkaoui, E. Artigau, F. Bouchy, D. Charbonneau, X. Delfosse, R. F. Díaz, R. Doyon, P. Figueira, T. Forveille, C. Lovis, C. Melo, G. Gaisné, F. Pepe, N. C. Santos, D. Ségransan, S. Udry, R. F. Goeke, A. M. Levine, E. V. Quintana, N. M. Guerrero, I. Mireles, D. A. Caldwell, P. Tenenbaum, C. E. Brasseur, G. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. Winn, J. M. Jenkins
Toi-674b: An Oasis In The Desert Of Exo-Neptunes Transiting A Nearby M Dwarf, F. Murgas, N. Astudillo-Defru, X. Bonfils, I. Crossfield, J. M. Almenara, J. Livingston, K. G. Stassun, J. Korth, J. Orell-Miquel, G. Morello, J. D. Eastman, J. J. Lissauer, S. R. Kane, F. Y. Morales, M. W. Werner, V. Gorjian, B. Benneke, D. Dragomir, E. C. Matthews, S. B. Howell, D. Ciardi, E. Gonzales, R. Matson, C. Beichman, J. Schlieder, K. A. Collins, K. I. Collins, Eric L.N. Jensen, P. Evans, F. J. Pozuelos, M. Gillon, E. Jehin, K. Barkaoui, E. Artigau, F. Bouchy, D. Charbonneau, X. Delfosse, R. F. Díaz, R. Doyon, P. Figueira, T. Forveille, C. Lovis, C. Melo, G. Gaisné, F. Pepe, N. C. Santos, D. Ségransan, S. Udry, R. F. Goeke, A. M. Levine, E. V. Quintana, N. M. Guerrero, I. Mireles, D. A. Caldwell, P. Tenenbaum, C. E. Brasseur, G. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. Winn, J. M. Jenkins
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Context. The NASA mission TESS is currently doing an all-sky survey from space to detect transiting planets around bright stars. As part of the validation process, the most promising planet candidates need to be confirmed and characterized using follow-up observations. Aims. In this article, our aim is to confirm the planetary nature of the transiting planet candidate TOI-674b using spectroscopic and photometric observations. Methods. We use TESS, Spitzer, ground-based light curves, and HARPS spectrograph radial velocity measurements to establish the physical properties of the transiting exoplanet candidate TOI-674b. We perform a joint fit of the light …
An Ultra-Short-Period Transiting Super-Earth Orbiting The M3 Dwarf Toi-1685, P. Bluhm, E. Pallé, K. Molaverdikhani, J. Kemmer, A. P. Hatzes, D. Kossakowski, S. Stock, J. A. Caballero, J. Lillo-Box, V. J. S. Béjar, M. G. Soto, P. J. Amado, P. Brown, C. Cadieux, R. Cloutier, K. A. Collins, K. I. Collins, M. Cortés-Contreras, R. Doyon, S. Dreizler, N. Espinoza, A. Fukui, E. González-Álvarez, T. Henning, K. Horne, S. V. Jeffers, J. M. Jenkins, Eric L.N. Jensen, A. Kaminski, J. F. Kielkopf, N. Kusakabe, M. Kürster, D. Lafrenière, R. Luque, F. Murgas, D. Montes, J. C. Morales, N. Narita, V. M. Passegger, A. Quirrenbach, P. Schöfer, S. Reffert, A. Reiners, I. Ribas, G. R. Ricker, S. Seager, A. Schweitzer, R. P. Schwarz, M. Tamura, T. Trifonov, R. Vanderspek, J. Winn, M. Zechmeister, M. R. Zapatero Osorio
An Ultra-Short-Period Transiting Super-Earth Orbiting The M3 Dwarf Toi-1685, P. Bluhm, E. Pallé, K. Molaverdikhani, J. Kemmer, A. P. Hatzes, D. Kossakowski, S. Stock, J. A. Caballero, J. Lillo-Box, V. J. S. Béjar, M. G. Soto, P. J. Amado, P. Brown, C. Cadieux, R. Cloutier, K. A. Collins, K. I. Collins, M. Cortés-Contreras, R. Doyon, S. Dreizler, N. Espinoza, A. Fukui, E. González-Álvarez, T. Henning, K. Horne, S. V. Jeffers, J. M. Jenkins, Eric L.N. Jensen, A. Kaminski, J. F. Kielkopf, N. Kusakabe, M. Kürster, D. Lafrenière, R. Luque, F. Murgas, D. Montes, J. C. Morales, N. Narita, V. M. Passegger, A. Quirrenbach, P. Schöfer, S. Reffert, A. Reiners, I. Ribas, G. R. Ricker, S. Seager, A. Schweitzer, R. P. Schwarz, M. Tamura, T. Trifonov, R. Vanderspek, J. Winn, M. Zechmeister, M. R. Zapatero Osorio
Physics & Astronomy Faculty Works
Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short-period planet population, which the TESS mission is particularly well suited to discover. Here, we report on the follow-up of a transit signal detected in the TESS sector 19 photometric time series of the M3.0 V star TOI-1685 (2MASS J04342248+4302148). We confirm the planetary nature of the transit signal, which has a period of Pb = 0.6691403−0.0000021+0.0000023 d, using precise radial velocity measurements taken with the CARMENES spectrograph. From the joint photometry and radial velocity analysis, we estimate the …
Mass And Density Of The Transiting Hot And Rocky Super-Earth Lhs 1478 B (Toi-1640 B), M. G. Soto, G. Anglada-Escudé, S. Dreizler, K. Molaverdikhani, J. Kemmer, C. Rodríguez-López, J. Lillo-Box, E. Pallé, N. Espinoza, J. A. Caballero, A. Quirrenbach, I. Ribas, A. Reiners, N. Narita, T. Hirano, P. J. Amado, V. J. S. Béjar, P. Bluhm, C. J. Burke, D. A. Caldwell, D. Charbonneau, R. Cloutier, K. A. Collins, M. Cortés-Contreras, E. Girardin, P. Guerra, H. Harakawa, A. P. Hatzes, J. Irwin, J. M. Jenkins, Eric L.N. Jensen, K. Kawauchi, T. Kotani, T. Kudo, M. Kunimoto, M. Kuzuhara, D. W. Latham, D. Montes, J. C. Morales, M. Mori, R. P. Nelson, M. Omiya, S. Pedraz, V. M. Passegger, B. V. Rackham, A. Rudat, J. E. Schlieder, P. Schöfer, A. Schweitzer, A. Selezneva, C. Stockdale, M. Tamura, T. Trifonov, R. Vanderspek, D. Watanabe
Mass And Density Of The Transiting Hot And Rocky Super-Earth Lhs 1478 B (Toi-1640 B), M. G. Soto, G. Anglada-Escudé, S. Dreizler, K. Molaverdikhani, J. Kemmer, C. Rodríguez-López, J. Lillo-Box, E. Pallé, N. Espinoza, J. A. Caballero, A. Quirrenbach, I. Ribas, A. Reiners, N. Narita, T. Hirano, P. J. Amado, V. J. S. Béjar, P. Bluhm, C. J. Burke, D. A. Caldwell, D. Charbonneau, R. Cloutier, K. A. Collins, M. Cortés-Contreras, E. Girardin, P. Guerra, H. Harakawa, A. P. Hatzes, J. Irwin, J. M. Jenkins, Eric L.N. Jensen, K. Kawauchi, T. Kotani, T. Kudo, M. Kunimoto, M. Kuzuhara, D. W. Latham, D. Montes, J. C. Morales, M. Mori, R. P. Nelson, M. Omiya, S. Pedraz, V. M. Passegger, B. V. Rackham, A. Rudat, J. E. Schlieder, P. Schöfer, A. Schweitzer, A. Selezneva, C. Stockdale, M. Tamura, T. Trifonov, R. Vanderspek, D. Watanabe
Physics & Astronomy Faculty Works
One of the main objectives of the Transiting Exoplanet Survey Satellite (TESS) mission is the discovery of small rocky planets around relatively bright nearby stars. Here, we report the discovery and characterization of the transiting super-Earth planet orbiting LHS 1478 (TOI-1640). The star is an inactive red dwarf (J ~ 9.6 mag and spectral type m3 V) with mass and radius estimates of 0.20 ± 0.01M⊙ and 0.25 ± 0.01R⊙, respectively, and an effective temperature of 3381 ± 54 K. It was observed by TESS in four sectors. These data revealed a transit-like feature with a period of 1.949 days. …
Hot Planets Around Cool Stars – Two Short-Period Mini-Neptunes Transiting The Late K-Dwarf Toi-1260, I. Y. Georgieva, C. M. Persson, O. Barragán, G. Nowak, M. Fridlund, D. Locci, E. Palle, R. Luque, I. Carleo, D. Gandolfi, S. R. Kane, J. Korth, K. G. Stassun, J. Livingston, E. C. Matthews, K. A. Collins, S. B. Howell, L. M. Serrano, S. Albrecht, A. Bieryla, C. E. Brasseur, D. Ciardi, W. D. Cochran, K. D. Colon, I. J. M. Crossfield, S. Csizmadia, H. J. Deeg, M. Esposito, E. Furlan, T. Gan, E. Goffo, E. Gonzales, S. Grziwa, E. W. Guenther, P. Guerra, T. Hirano, J. M. Jenkins, Eric L.N. Jensen, P. Kabáth, E. Knudstrup, K. W. F. Lam, D. W. Latham, A. M. Levine, R. A. Matson, S. Mcdermott, H. L. M. Osborne, M. Paegert, S. N. Quinn, S. Redfield, G. R. Ricker, J. E. Schlieder, N. J. Scott, S. Seager, A. M. S. Smith, P. Tenenbaum, J. D. Twicken, R. Vanderspek, V. Van Eylen, J. N. Winn
Hot Planets Around Cool Stars – Two Short-Period Mini-Neptunes Transiting The Late K-Dwarf Toi-1260, I. Y. Georgieva, C. M. Persson, O. Barragán, G. Nowak, M. Fridlund, D. Locci, E. Palle, R. Luque, I. Carleo, D. Gandolfi, S. R. Kane, J. Korth, K. G. Stassun, J. Livingston, E. C. Matthews, K. A. Collins, S. B. Howell, L. M. Serrano, S. Albrecht, A. Bieryla, C. E. Brasseur, D. Ciardi, W. D. Cochran, K. D. Colon, I. J. M. Crossfield, S. Csizmadia, H. J. Deeg, M. Esposito, E. Furlan, T. Gan, E. Goffo, E. Gonzales, S. Grziwa, E. W. Guenther, P. Guerra, T. Hirano, J. M. Jenkins, Eric L.N. Jensen, P. Kabáth, E. Knudstrup, K. W. F. Lam, D. W. Latham, A. M. Levine, R. A. Matson, S. Mcdermott, H. L. M. Osborne, M. Paegert, S. N. Quinn, S. Redfield, G. R. Ricker, J. E. Schlieder, N. J. Scott, S. Seager, A. M. S. Smith, P. Tenenbaum, J. D. Twicken, R. Vanderspek, V. Van Eylen, J. N. Winn
Physics & Astronomy Faculty Works
We present the discovery and characterization of two sub-Neptunes in close orbits, as well as a tentative outer planet of a similar size, orbiting TOI-1260 – a low metallicity K6 Vdwarf star. Photometry from TESS yields radii of Rb = 2.33 ± 0.10 R⊕ and Rc = 2.82 ± 0.15 R⊕, and periods of 3.13 and 7.49 days for TOI-1260 b and TOI-1260 c, respectively. We combined the TESS data with a series of ground-based follow-up observations to characterize the planetary system. From HARPS-N high-precision radial velocities we obtain Mb =8.6+1.4−1.5 M⊕ and Mc =11.8+3.4−3.2 M⊕. The star is moderately …
A Planetary System With Two Transiting Mini-Neptunes Near The Radius Valley Transition Around The Bright M Dwarf Toi-776, R. Luque, L. M. Serrano, K. Molaverdikhani, M. C. Nixon, J. H. Livingston, E. W. Guenther, E. Pallé, N. Madhusudhan, G. Nowak, J. Korth, W. D. Cochran, T. Hirano, P. Chaturvedi, E. Goffo, S. Albrecht, O. Barragán, C. Briceño, J. Cabrera, D. Charbonneau, R. Cloutier, K. A. Collins, K. I. Collins, K. D. Colón, J. M. Crossfield, S. Csizmadia, F. Dai, H. J. Deeg, M. Esposito, M. Fridlund, D. Gandolfi, I. Georgieva, A. Glidden, R. F. Goeke, S. Grziwa, A. P. Hatzes, C. E. Henze, S. B. Howell, J. Irwin, J. M. Jenkins, Eric L.N. Jensen, P. Kábath, R. C. Kidwell Jr., J. F. Kielkopf, E. Knudstrup, K. W. F. Lam, D. W. Latham, J. J. Lissauer, A. W. Mann, E. C. Matthews, I. Mireles, N. Narita, M. Paegert, C. M. Persson, S. Redfield, G. R. Ricker, F. Rodler, J. E. Schlieder, N. J. Scott, S. Seager, J. Šubjak, T. G. Tan, E. B. Ting, R. Vanderspek, V. Van Eylen, J. N. Winn, C. Ziegler
A Planetary System With Two Transiting Mini-Neptunes Near The Radius Valley Transition Around The Bright M Dwarf Toi-776, R. Luque, L. M. Serrano, K. Molaverdikhani, M. C. Nixon, J. H. Livingston, E. W. Guenther, E. Pallé, N. Madhusudhan, G. Nowak, J. Korth, W. D. Cochran, T. Hirano, P. Chaturvedi, E. Goffo, S. Albrecht, O. Barragán, C. Briceño, J. Cabrera, D. Charbonneau, R. Cloutier, K. A. Collins, K. I. Collins, K. D. Colón, J. M. Crossfield, S. Csizmadia, F. Dai, H. J. Deeg, M. Esposito, M. Fridlund, D. Gandolfi, I. Georgieva, A. Glidden, R. F. Goeke, S. Grziwa, A. P. Hatzes, C. E. Henze, S. B. Howell, J. Irwin, J. M. Jenkins, Eric L.N. Jensen, P. Kábath, R. C. Kidwell Jr., J. F. Kielkopf, E. Knudstrup, K. W. F. Lam, D. W. Latham, J. J. Lissauer, A. W. Mann, E. C. Matthews, I. Mireles, N. Narita, M. Paegert, C. M. Persson, S. Redfield, G. R. Ricker, F. Rodler, J. E. Schlieder, N. J. Scott, S. Seager, J. Šubjak, T. G. Tan, E. B. Ting, R. Vanderspek, V. Van Eylen, J. N. Winn, C. Ziegler
Physics & Astronomy Faculty Works
We report the discovery and characterization of two transiting planets around the bright M1 V star LP 961-53 (TOI-776, J = 8.5 mag, M = 0.54 ± 0.03 M ⊙) detected during Sector 10 observations of the Transiting Exoplanet Survey Satellite (TESS). Combining the TESS photometry with HARPS radial velocities, as well as ground-based follow-up transit observations from the MEarth and LCOGT telescopes, for the inner planet, TOI-776 b, we measured a period of P b = 8.25 d, a radius of R b = 1.85 ± 0.13 R ⊕, and a mass of M b = 4.0 ± 0.9 …