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Physical Sciences and Mathematics Commons

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Astrophysics and Astronomy

Swarthmore College

Techniques: radial velocities

2020

Articles 1 - 3 of 3

Full-Text Articles in Physical Sciences and Mathematics

Precise Mass And Radius Of A Transiting Super-Earth Planet Orbiting The M Dwarf Toi-1235: A Planet In The Radius Gap?, P. Bluhm, R. Luque, N. Espinoza, E. Pallé, J. A. Caballero, S. Dreizler, J. H. Livingston, S. Mathur, A. Quirrenbach, S. Stock, V. Van Eylen, G. Nowak, E. D. López, S. Csizmadia, M. R. Zapatero Osorio, P. Schöfer, J. Lillo-Box, M. Oshagh, E. González-Álvarez, P. J. Amado, D. Barrado, V. J. S. Béjar, B. Cale, P. Chaturvedi, M. El Mufti, A. Ercolino, M. Fridlund, E. Gaidos, R. A. García, I. Georgieva, L. González-Cuesta, P. Guerra, A. P. Hatzes, T. Henning, E. Herrero, D. Hidalgo, G. Isopi, S. V. Jeffers, J. M. Jenkins, Eric L.N. Jensen, P. Kábath, A. Kaminski, J. Kemmer, J. Korth, D. Kossakowski, M. Kürster, M. Lafarga, F. Mallia, D. Montes, J. C. Morales, M. Morales-Calderón, F Murgas, N. Narita, V. M. Passegger, S. Pedraz, C. M. Persson, P. Plavchan, H. Rauer, S. Redfield, S. Reffert, A. Reiners, I. Ribas, G. R. Ricker, C. Rodríguez-López, A. R. G. Santos, S. Seager, M. Schlecker, A. Schweitzer, Y. Shan, M. G. Soto, J. Subjak, L. Tal-Or, T. Trifonov, S. Vanaverbeke, R. Vanderspek, J. Wittrock, M. Zechmeister, F. Zohrabi Jul 2020

Precise Mass And Radius Of A Transiting Super-Earth Planet Orbiting The M Dwarf Toi-1235: A Planet In The Radius Gap?, P. Bluhm, R. Luque, N. Espinoza, E. Pallé, J. A. Caballero, S. Dreizler, J. H. Livingston, S. Mathur, A. Quirrenbach, S. Stock, V. Van Eylen, G. Nowak, E. D. López, S. Csizmadia, M. R. Zapatero Osorio, P. Schöfer, J. Lillo-Box, M. Oshagh, E. González-Álvarez, P. J. Amado, D. Barrado, V. J. S. Béjar, B. Cale, P. Chaturvedi, M. El Mufti, A. Ercolino, M. Fridlund, E. Gaidos, R. A. García, I. Georgieva, L. González-Cuesta, P. Guerra, A. P. Hatzes, T. Henning, E. Herrero, D. Hidalgo, G. Isopi, S. V. Jeffers, J. M. Jenkins, Eric L.N. Jensen, P. Kábath, A. Kaminski, J. Kemmer, J. Korth, D. Kossakowski, M. Kürster, M. Lafarga, F. Mallia, D. Montes, J. C. Morales, M. Morales-Calderón, F Murgas, N. Narita, V. M. Passegger, S. Pedraz, C. M. Persson, P. Plavchan, H. Rauer, S. Redfield, S. Reffert, A. Reiners, I. Ribas, G. R. Ricker, C. Rodríguez-López, A. R. G. Santos, S. Seager, M. Schlecker, A. Schweitzer, Y. Shan, M. G. Soto, J. Subjak, L. Tal-Or, T. Trifonov, S. Vanaverbeke, R. Vanderspek, J. Wittrock, M. Zechmeister, F. Zohrabi

Physics & Astronomy Faculty Works

We report the confirmation of a transiting planet around the bright weakly active M0.5 V star TOI-1235 (TYC 4384–1735–1, V ≈ 11.5 mag), whose transit signal was detected in the photometric time series of sectors 14, 20, and 21 of the TESS space mission. We confirm the planetary nature of the transit signal, which has a period of 3.44 d, by using precise RV measurements with the CARMENES, HARPS-N, and iSHELL spectrographs, supplemented by high-resolution imaging and ground-based photometry. A comparison of the properties derived for TOI-1235 b with theoretical models reveals that the planet has a rocky composition, with …


Toi-132 B: A Short-Period Planet In The Neptune Desert Transiting A V = 11.3 G-Type Star, M. R. Díaz, J. S. Jenkins, D. Gandolfi, E. D. Lopez, M. G. Soto, P. Cortés-Zuleta, Z. M. Berdiñas, K. G. Stassun, K. A. Collins, J. I. Vines, C. Ziegler, M. Fridlund, Eric L.N. Jensen, F. Murgas, A. Santerne, P. A. Wilson, M. Esposito, A. P. Hatzes, M. C. Johnson, K. W. F. Lam, J. H. Livingston, V. Van Eylen, N. Narita, C. Briceño, K. I. Collins, S. Csizmadia, M. Fausnaugh, T. Gan, R. A. García, I. Georgieva, A. Glidden, L. González-Cuesta, J. M. Jenkins, D. W. Latham, N. M. Law, A. W. Mann, S. Mathur, I. Mireles, R. Morris, E. Pallé, C. M. Persson, G. Ricker, S. Rinehart, M. E. Rose, S. Seager, J. C. Smith, T.-G. Tan, A. Tokovinin, A. Vanderburg, R. Vanderspek, J. N. Winn, D. A. Yahalomi Mar 2020

Toi-132 B: A Short-Period Planet In The Neptune Desert Transiting A V = 11.3 G-Type Star, M. R. Díaz, J. S. Jenkins, D. Gandolfi, E. D. Lopez, M. G. Soto, P. Cortés-Zuleta, Z. M. Berdiñas, K. G. Stassun, K. A. Collins, J. I. Vines, C. Ziegler, M. Fridlund, Eric L.N. Jensen, F. Murgas, A. Santerne, P. A. Wilson, M. Esposito, A. P. Hatzes, M. C. Johnson, K. W. F. Lam, J. H. Livingston, V. Van Eylen, N. Narita, C. Briceño, K. I. Collins, S. Csizmadia, M. Fausnaugh, T. Gan, R. A. García, I. Georgieva, A. Glidden, L. González-Cuesta, J. M. Jenkins, D. W. Latham, N. M. Law, A. W. Mann, S. Mathur, I. Mireles, R. Morris, E. Pallé, C. M. Persson, G. Ricker, S. Rinehart, M. E. Rose, S. Seager, J. C. Smith, T.-G. Tan, A. Tokovinin, A. Vanderburg, R. Vanderspek, J. N. Winn, D. A. Yahalomi

Physics & Astronomy Faculty Works

The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we report the Transiting Exoplanet Survey Satellite (TESS) discovery of a new short-period planet in the Neptune desert, orbiting the G-type dwarf TYC 8003-1117-1 (TOI-132). TESS photometry shows transit-like dips at the level of ∼1400 ppm occurring every ∼2.11 d. High-precision radial velocity follow-up with High Accuracy Radial Velocity Planet Searcher confirmed the planetary nature of the transit signal and provided a semi-amplitude radial velocity variation of 11.38 +0.84−0.85 m s−1, which, when combined with the stellar …


Hd 213885b: A Transiting 1-D-Period Super-Earth With An Earth-Like Composition Around A Bright (V = 7.9) Star Unveiled By Tess, N. Espinoza, R. Brahm, T. Henning, A. Jordán, C. Dorn, F. Rojas, P. Sarkis, D. Kossakowski, M. Schlecker, M. R. Díaz, J. S. Jenkins, C. Aguilera-Gomez, J. M. Jenkins, J. D. Twicken, K. A. Collins, J. Lissauer, D. J. M. Armstrong, V. Adibekyan, D. Barrado, S. C. C. Barros, M. Battley, D. Bayliss, F. Bouchy, E. M. Bryant, B. F. Cooke, O. D. S. Demaneon, X. Dumusque, P. Figueira, H. Giles, J. Lillo-Box, C. Lovis, L. D. Nielsen, F. Pepe, D. Pollacco, N. C. Santos, S. G. Sousa, S. Udry, P. J. Wheatley, O. Turner, M. Marmier, D, Ségransan, G. Ricker, D. Latham, S. Seager, J. N. Winn, J. F. Kielkopf, R. Hart, G. Wingham, Eric L.N. Jensen, K. G. Hełminiak, A. Tokovinin, C. Briceño, C. Ziegler, N. M. Law, A. W. Mann, T. Daylan, J. P. Doty, N. Guerrero, P. Boyd, I. Crossfield, R. I. Morris, C. E. Henze, A. D. Chacon Jan 2020

Hd 213885b: A Transiting 1-D-Period Super-Earth With An Earth-Like Composition Around A Bright (V = 7.9) Star Unveiled By Tess, N. Espinoza, R. Brahm, T. Henning, A. Jordán, C. Dorn, F. Rojas, P. Sarkis, D. Kossakowski, M. Schlecker, M. R. Díaz, J. S. Jenkins, C. Aguilera-Gomez, J. M. Jenkins, J. D. Twicken, K. A. Collins, J. Lissauer, D. J. M. Armstrong, V. Adibekyan, D. Barrado, S. C. C. Barros, M. Battley, D. Bayliss, F. Bouchy, E. M. Bryant, B. F. Cooke, O. D. S. Demaneon, X. Dumusque, P. Figueira, H. Giles, J. Lillo-Box, C. Lovis, L. D. Nielsen, F. Pepe, D. Pollacco, N. C. Santos, S. G. Sousa, S. Udry, P. J. Wheatley, O. Turner, M. Marmier, D, Ségransan, G. Ricker, D. Latham, S. Seager, J. N. Winn, J. F. Kielkopf, R. Hart, G. Wingham, Eric L.N. Jensen, K. G. Hełminiak, A. Tokovinin, C. Briceño, C. Ziegler, N. M. Law, A. W. Mann, T. Daylan, J. P. Doty, N. Guerrero, P. Boyd, I. Crossfield, R. I. Morris, C. E. Henze, A. D. Chacon

Physics & Astronomy Faculty Works

We report the discovery of the 1.008-d, ultrashort period (USP) super-Earth HD 213885b (TOI-141b) orbiting the bright (V = 7.9) star HD 213885 (TOI-141, TIC 403224672), detected using photometry from the recently launched TESS mission. Using FEROS, HARPS, and CORALIE radial velocities, we measure a precise mass of 8.8 ± 0.6 M⊕ for this 1.74 ± 0.05 R⊕ exoplanet, which provides enough information to constrain its bulk composition – similar to Earth’s but enriched in iron. The radius, mass, and stellar irradiation of HD 213885b are, given our data, very similar to 55 Cancri e, making this exoplanet a good …