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Your search keyword '"Carleo, I."' showing total 8 results
Start Over Author "Carleo, I." Journal monthly notices of the royal astronomical society
8 results on '"Carleo, I."'

1. TOI-544 b: a potential water-world inside the radius valley in a two-planet system

Author

Osborne, H L M, primary, Van Eylen, V, additional, Goffo, E, additional, Gandolfi, D, additional, Nowak, G, additional, Persson, C M, additional, Livingston, J, additional, Weeks, A, additional, Pallé, E, additional, Luque, R, additional, Hellier, C, additional, Carleo, I, additional, Redfield, S, additional, Hirano, T, additional, Garbaccio Gili, M, additional, Alarcon, J, additional, Barragán, O, additional, Casasayas-Barris, N, additional, Díaz, M R, additional, Esposito, M, additional, Knudstrup, E, additional, Jenkins, J S, additional, Murgas, F, additional, Orell-Miquel, J, additional, Rodler, F, additional, Serrano, L, additional, Stangret, M, additional, Albrecht, S H, additional, Alqasim, A, additional, Cochran, W D, additional, Deeg, H J, additional, Fridlund, M, additional, Hatzes, A P, additional, Korth, J, additional, and Lam, K W F, additional

Published
2023
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2. TOI-544 b: a potential water-world inside the radius valley in a two-planet system.

Author

Osborne, H L M, Van Eylen, V, Goffo, E, Gandolfi, D, Nowak, G, Persson, C M, Livingston, J, Weeks, A, Pallé, E, Luque, R, Hellier, C, Carleo, I, Redfield, S, Hirano, T, Garbaccio Gili, M, Alarcon, J, Barragán, O, Casasayas-Barris, N, Díaz, M R, and Esposito, M

Subjects
INNER planets, ASTRONOMICAL transits, PLANETARY interiors, NATURAL satellites, PLANETS, SOLAR system
Abstract

We report on the precise radial velocity follow-up of TOI-544 (HD 290498), a bright K star (V  = 10.8), which hosts a small transiting planet recently discovered by the Transiting Exoplanet Survey Satellite (TESS). We collected 122 high-resolution High Accuracy Radial velocity Planet Searcher (HARPS) and HARPS-N spectra to spectroscopically confirm the transiting planet and measure its mass. The nearly 3-yr baseline of our follow-up allowed us to unveil the presence of an additional, non-transiting, longer-period companion planet. We derived a radius and mass for the inner planet, TOI-544 b, of 2.018 ± 0.076 R⊕ and 2.89 ± 0.48 M⊕, respectively, which gives a bulk density of |$1.93^{+0.30}_{-0.25}$|  g cm−3. TOI-544 c has a minimum mass of 21.5 ± 2.0 M⊕ and orbital period of 50.1 ± 0.2 d. The low density of planet-b implies that it has either an Earth-like rocky core with a hydrogen atmosphere, or a composition which harbours a significant fraction of water. The composition interpretation is degenerate depending on the specific choice of planet interior models used. Additionally, TOI-544 b has an orbital period of 1.55 d and equilibrium temperature of 999 ± 14 K, placing it within the predicted location of the radius valley, where few planets are expected. TOI-544 b is a top target for future atmospheric observations, for example with JWST , which would enable better constraints of the planet composition. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Two warm Neptunes transiting HIP 9618 revealed by TESS and Cheops

Author

Osborn, H P, primary, Nowak, G, additional, Hébrard, G, additional, Masseron, T, additional, Lillo-Box, J, additional, Pallé, E, additional, Bekkelien, A, additional, Florén, H-G, additional, Guterman, P, additional, Simon, A E, additional, Adibekyan, V, additional, Bieryla, A, additional, Borsato, L, additional, Brandeker, A, additional, Ciardi, D R, additional, Collier Cameron, A, additional, Collins, K A, additional, Egger, J A, additional, Gandolfi, D, additional, Hooton, M J, additional, Latham, D W, additional, Lendl, M, additional, Matthews, E C, additional, Tuson, A, additional, Ulmer-Moll, S, additional, Vanderburg, A, additional, Wilson, T G, additional, Ziegler, C, additional, Alibert, Y, additional, Alonso, R, additional, Anglada, G, additional, Arnold, L, additional, Asquier, J, additional, Barrado y Navascues, D, additional, Baumjohann, W, additional, Beck, T, additional, Belinski, A A, additional, Benz, W, additional, Biondi, F, additional, Boisse, I, additional, Bonfils, X, additional, Broeg, C, additional, Buchhave, L A, additional, Bárczy, T, additional, Barros, S C C, additional, Cabrera, J, additional, Cardona Guillen, C, additional, Carleo, I, additional, Castro-González, A, additional, Charnoz, S, additional, Christiansen, J, additional, Cortes-Zuleta, P, additional, Csizmadia, S, additional, Dalal, S, additional, Davies, M B, additional, Deleuil, M, additional, Delfosse, X, additional, Delrez, L, additional, Demory, B-O, additional, Dunlavey, A B, additional, Ehrenreich, D, additional, Erikson, A, additional, Fernandes, R B, additional, Fortier, A, additional, Forveille, T, additional, Fossati, L, additional, Fridlund, M, additional, Gillon, M, additional, Goeke, R F, additional, Goliguzova, M V, additional, Gonzales, E J, additional, Günther, M N, additional, Güdel, M, additional, Heidari, N, additional, Henze, C E, additional, Howell, S, additional, Hoyer, S, additional, Frey, J I, additional, Isaak, K G, additional, Jenkins, J M, additional, Kiefer, F, additional, Kiss, L, additional, Korth, J, additional, Maxted, P F L, additional, Laskar, J, additional, Lecavelier des Etangs, A, additional, Lovis, C, additional, Lund, M B, additional, Luque, R, additional, Magrin, D, additional, Almenara, J M, additional, Martioli, E, additional, Mecina, M, additional, Medina, J V, additional, Moldovan, D, additional, Morales-Calderón, M, additional, Morello, G, additional, Moutou, C, additional, Murgas, F, additional, Jensen, E L N, additional, Nascimbeni, V, additional, Olofsson, G, additional, Ottensamer, R, additional, Pagano, I, additional, Peter, G, additional, Piotto, G, additional, Pollacco, D, additional, Queloz, D, additional, Ragazzoni, R, additional, Rando, N, additional, Rauer, H, additional, Ribas, I, additional, Ricker, G, additional, Demangeon, O D S, additional, Smith, A M S, additional, Santos, N, additional, Scandariato, G, additional, Seager, S, additional, Sousa, S G, additional, Steller, M, additional, Szabó, G M, additional, Ségransan, D, additional, Thomas, N, additional, Udry, S, additional, Ulmer, B, additional, Van Grootel, V, additional, Vanderspek, R, additional, Walton, N, additional, and Winn, J N, additional

Published
2023
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4. Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

Author

Knudstrup, E, primary, Gandolfi, D, additional, Nowak, G, additional, Persson, C M, additional, Furlan, E, additional, Livingston, J, additional, Matthews, E, additional, Lundkvist, M S, additional, Winther, M L, additional, Rørsted, J L, additional, Albrecht, S H, additional, Goffo, E, additional, Carleo, I, additional, Deeg, H J, additional, Collins, K A, additional, Narita, N, additional, Isaacson, H, additional, Redfield, S, additional, Dai, F, additional, Hirano, T, additional, Akana Murphy, J M, additional, Beard, C, additional, Buchhave, L A, additional, Cary, S, additional, Chontos, A, additional, Crossfield, I, additional, Cochran, W D, additional, Conti, D, additional, Dalba, P A, additional, Esposito, M, additional, Fajardo-Acosta, S, additional, Giacalone, S, additional, Grunblatt, S K, additional, Guerra, P, additional, Hatzes, A P, additional, Holcomb, R, additional, Horta, F G, additional, Howard, A W, additional, Huber, D, additional, Jenkins, J M, additional, Kabáth, P, additional, Kane, S, additional, Korth, J, additional, Lam, K W F, additional, Lester, K V, additional, Matson, R, additional, McLeod, K K, additional, Orell-Miquel, J, additional, Murgas, F, additional, Palle, E, additional, Polanski, A S, additional, Ricker, G, additional, Robertson, P, additional, Rubenzahl, R, additional, Schlieder, J E, additional, Seager, S, additional, Smith, A M S, additional, Tenenbaum, P, additional, Turtelboom, E, additional, Vanderspek, R, additional, Weiss, L, additional, and Winn, J, additional

Published
2022
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5. Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion.

Author

Knudstrup, E, Gandolfi, D, Nowak, G, Persson, C M, Furlan, E, Livingston, J, Matthews, E, Lundkvist, M S, Winther, M L, Rørsted, J L, Albrecht, S H, Goffo, E, Carleo, I, Deeg, H J, Collins, K A, Narita, N, Isaacson, H, Redfield, S, Dai, F, and Hirano, T

Subjects
ASTRONOMICAL transits, VELOCITY, PLANETARY systems, ORBITS (Astronomy), PLANETARY mass, SATURN (Planet)
Abstract

We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of |$2.699835^{+0.000004}_{-0.000003}$|  d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn–mass planet on a moderately eccentric orbit (⁠|$0.13^{+0.07}_{-0.09}$|⁠) with a minimum mass of 84 ± 7 M⊕ and a period of |$443^{+11}_{-13}$|  d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors. [ABSTRACT FROM AUTHOR]

Published
2023
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6. The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf

Author

Barragán, O, primary, Armstrong, D J, additional, Gandolfi, D, additional, Carleo, I, additional, Vidotto, A A, additional, Villarreal D’Angelo, C, additional, Oklopčić, A, additional, Isaacson, H, additional, Oddo, D, additional, Collins, K, additional, Fridlund, M, additional, Sousa, S G, additional, Persson, C M, additional, Hellier, C, additional, Howell, S, additional, Howard, A, additional, Redfield, S, additional, Eisner, N, additional, Georgieva, I Y, additional, Dragomir, D, additional, Bayliss, D, additional, Nielsen, L D, additional, Klein, B, additional, Aigrain, S, additional, Zhang, M, additional, Teske, J, additional, Twicken, J D, additional, Jenkins, J, additional, Esposito, M, additional, Van Eylen, V, additional, Rodler, F, additional, Adibekyan, V, additional, Alarcon, J, additional, Anderson, D R, additional, Akana Murphy, J M, additional, Barrado, D, additional, Barros, S C C, additional, Benneke, B, additional, Bouchy, F, additional, Bryant, E M, additional, Butler, R P, additional, Burt, J, additional, Cabrera, J, additional, Casewell, S, additional, Chaturvedi, P, additional, Cloutier, R, additional, Cochran, W D, additional, Crane, J, additional, Crossfield, I, additional, Crouzet, N, additional, Collins, K I, additional, Dai, F, additional, Deeg, H J, additional, Deline, A, additional, Demangeon, O D S, additional, Dumusque, X, additional, Figueira, P, additional, Furlan, E, additional, Gnilka, C, additional, Goad, M R, additional, Goffo, E, additional, Gutiérrez-Canales, F, additional, Hadjigeorghiou, A, additional, Hartman, Z, additional, Hatzes, A P, additional, Harris, M, additional, Henderson, B, additional, Hirano, T, additional, Hojjatpanah, S, additional, Hoyer, S, additional, Kabáth, P, additional, Korth, J, additional, Lillo-Box, J, additional, Luque, R, additional, Marmier, M, additional, Močnik, T, additional, Muresan, A, additional, Murgas, F, additional, Nagel, E, additional, Osborne, H L M, additional, Osborn, A, additional, Osborn, H P, additional, Palle, E, additional, Raimbault, M, additional, Ricker, G R, additional, Rubenzahl, R A, additional, Stockdale, C, additional, Santos, N C, additional, Scott, N, additional, Schwarz, R P, additional, Shectman, S, additional, Seager, S, additional, Ségransan, D, additional, Serrano, L M, additional, Skarka, M, additional, Smith, A M S, additional, Šubjak, J, additional, Tan, T G, additional, Udry, S, additional, Watson, C, additional, Wheatley, P J, additional, West, R, additional, Winn, J N, additional, Wang, S X, additional, Wolfgang, A, additional, and Ziegler, C, additional

Published
2022
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7. Hot planets around cool stars – two short-period mini-Neptunes transiting the late K-dwarf TOI-1260

Author

Georgieva, I Y, primary, Persson, C M, additional, Barragán, O, additional, Nowak, G, additional, Fridlund, M, additional, Locci, D, additional, Palle, E, additional, Luque, R, additional, Carleo, I, additional, Gandolfi, D, additional, Kane, S R, additional, Korth, J, additional, Stassun, K G, additional, Livingston, J, additional, Matthews, E C, additional, Collins, K A, additional, Howell, S B, additional, Serrano, L M, additional, Albrecht, S, additional, Bieryla, A, additional, Brasseur, C E, additional, Ciardi, D, additional, Cochran, W D, additional, Colon, K D, additional, Crossfield, I J M, additional, Csizmadia, Sz, additional, Deeg, H J, additional, Esposito, M, additional, Furlan, E, additional, Gan, T, additional, Goffo, E, additional, Gonzales, E, additional, Grziwa, S, additional, Guenther, E W, additional, Guerra, P, additional, Hirano, T, additional, Jenkins, J M, additional, Jensen, E L N, additional, Kabáth, P, additional, Knudstrup, E, additional, Lam, K W F, additional, Latham, D W, additional, Levine, A M, additional, Matson, R A, additional, McDermott, S, additional, Osborne, H L M, additional, Paegert, M, additional, Quinn, S N, additional, Redfield, S, additional, Ricker, G R, additional, Schlieder, J E, additional, Scott, N J, additional, Seager, S, additional, Smith, A M S, additional, Tenenbaum, P, additional, Twicken, J D, additional, Vanderspek, R, additional, Van Eylen, V, additional, and Winn, J N, additional

Published
2021
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8. young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf.

Author

Barragán, O, Armstrong, D J, Gandolfi, D, Carleo, I, Vidotto, A A, Villarreal D'Angelo, C, Oklopčić, A, Isaacson, H, Oddo, D, Collins, K, Fridlund, M, Sousa, S G, Persson, C M, Hellier, C, Howell, S, Howard, A, Redfield, S, Eisner, N, Georgieva, I Y, and Dragomir, D

Subjects
PLANETARY systems, STELLAR magnitudes, LIGHT curves, ASTRONOMICAL transits, DWARF stars
Abstract

We present the discovery and characterization of two transiting planets observed by TESS in the light curves of the young and bright (V  = 9.67) star HD73583 (TOI-560). We perform an intensive spectroscopic and photometric space- and ground-based follow-up in order to confirm and characterize the system. We found that HD73583 is a young (∼500 Myr) active star with a rotational period of 12.08 ± 0.11  d, and a mass and radius of 0.73 ± 0.02 M⊙ and 0.65 ± 0.02 R⊙, respectively. HD 73583 b (Pb  = |$6.3980420 _{ - 0.0000062 } ^ { + 0.0000067 }$|  d) has a mass and radius of |$10.2 _{ - 3.1 } ^ { + 3.4 }$|   M ⊕ and 2.79 ± 0.10  R ⊕, respectively, which gives a density of |$2.58 _{ - 0.81 } ^ { + 0.95 }$|   |${\rm g\, cm^{-3}}$|⁠. HD 73583 c (Pc  =  |$18.87974 _{ - 0.00074 } ^ { + 0.00086 }$|  d) has a mass and radius of |$9.7 _{ - 1.7 } ^ { + 1.8 }$|   M ⊕ and |$2.39 _{ - 0.09 } ^ { + 0.10 }$|   R ⊕, respectively, which translates to a density of |$3.88 _{ - 0.80 } ^ { + 0.91 }$|   |${\rm g\, cm^{-3}}$|⁠. Both planets are consistent with worlds made of a solid core surrounded by a volatile envelope. Because of their youth and host star brightness, they both are excellent candidates to perform transmission spectroscopy studies. We expect ongoing atmospheric mass-loss for both planets caused by stellar irradiation. We estimate that the detection of evaporating signatures on H and He would be challenging, but doable with present and future instruments. [ABSTRACT FROM AUTHOR]

Published
2022
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