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2. An ESPRESSO view of the HD 189733 system

Author

Cristo, E., primary, Esparza Borges, E., additional, Santos, N. C., additional, Demangeon, O., additional, Palle, E., additional, Psaridi, A., additional, Bourrier, V., additional, Faria, J. P., additional, Allart, R., additional, Azevedo Silva, T., additional, Borsa, F., additional, Alibert, Y., additional, Figueira, P., additional, González Hernández, J. I., additional, Lendl, M., additional, Lillo-Box, J., additional, Lo Curto, G., additional, Di Marcantonio, P., additional, Martins, C. J. A. P., additional, Nunes, N. J., additional, Pepe, F., additional, Seidel, J. V., additional, Sousa, S. G., additional, Sozzetti, A., additional, Stangret, M., additional, Suárez Mascareño, A., additional, Tabernero, H. M., additional, and Zapatero Osorio, M. R., additional

Published
2024
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3. A compact multi-planet system transiting HIP 29442 (TOI-469) discovered by TESS and ESPRESSO

Author

Damasso, M., primary, Rodrigues, J., additional, Castro-González, A., additional, Lavie, B., additional, Davoult, J., additional, Zapatero Osorio, M. R., additional, Dou, J., additional, Sousa, S. G., additional, Owen, J. E., additional, Sossi, P., additional, Adibekyan, V., additional, Osborn, H., additional, Leinhardt, Z., additional, Alibert, Y., additional, Lovis, C., additional, Delgado Mena, E., additional, Sozzetti, A., additional, Barros, S. C. C., additional, Bossini, D., additional, Ziegler, C., additional, Ciardi, D. R., additional, Matthews, E. C., additional, Carter, P. J., additional, Lillo-Box, J., additional, Suárez Mascareño, A., additional, Cristiani, S., additional, Pepe, F., additional, Rebolo, R., additional, Santos, N. C., additional, Allende Prieto, C., additional, Benatti, S., additional, Bouchy, F., additional, Briceño, C., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Dumusque, X., additional, Egger, J. A., additional, Ehrenreich, D., additional, Faria, J., additional, Figueira, P., additional, Génova Santos, R., additional, Gonzales, E. J., additional, González Hernández, J. I., additional, Law, N., additional, Lo Curto, G., additional, Mann, A. W., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Micela, G., additional, Molaro, P., additional, Nunes, N. J., additional, Palle, E., additional, Poretti, E., additional, Schlieder, J. E., additional, and Udry, S., additional

Published
2023
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4. An unusually low-density super-Earth transiting the bright early-type M-dwarf GJ 1018 (TOI-244)

Author

Castro-González, A., primary, Demangeon, O. D. S., additional, Lillo-Box, J., additional, Lovis, C., additional, Lavie, B., additional, Adibekyan, V., additional, Acuña, L., additional, Deleuil, M., additional, Aguichine, A., additional, Zapatero Osorio, M. R., additional, Tabernero, H. M., additional, Davoult, J., additional, Alibert, Y., additional, Santos, N., additional, Sousa, S. G., additional, Antoniadis-Karnavas, A., additional, Borsa, F., additional, Winn, J. N., additional, Allende Prieto, C., additional, Figueira, P., additional, Jenkins, J. M., additional, Sozzetti, A., additional, Damasso, M., additional, Silva, A. M., additional, Astudillo-Defru, N., additional, Barros, S. C. C., additional, Bonfils, X., additional, Cristiani, S., additional, Di Marcantonio, P., additional, González Hernández, J. I., additional, Curto, G. Lo, additional, Martins, C. J. A. P., additional, Nunes, N. J., additional, Palle, E., additional, Pepe, F., additional, Seager, S., additional, and Suárez Mascareño, A., additional

Published
2023
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5. Detection of a high-velocity sodium feature on the ultra-hot Jupiter WASP-121 b

Author

Seidel, J. V., primary, Borsa, F., additional, Pino, L., additional, Ehrenreich, D., additional, Stangret, M., additional, Zapatero Osorio, M. R., additional, Palle, E., additional, Alibert, Y., additional, Allart, R., additional, Bourrier, V., additional, Di Marcantonio, P., additional, Figueira, P., additional, González Hernández, J. I., additional, Lillo-Box, J., additional, Lovis, C., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Molaro, P., additional, Nunes, N. J., additional, Pepe, F., additional, Santos, N. C., additional, and Sozzetti, A., additional

Published
2023
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6. Planetary system around LTT 1445A unveiled by ESPRESSO: Multiple planets in a triple M-dwarf system

Author

Lavie, B., primary, Bouchy, F., additional, Lovis, C., additional, Zapatero Osorio, M., additional, Deline, A., additional, Barros, S., additional, Figueira, P., additional, Sozzetti, A., additional, González Hernández, J. I., additional, Lillo-Box, J., additional, Rodrigues, J., additional, Mehner, A., additional, Damasso, M., additional, Adibekyan, V., additional, Alibert, Y., additional, Allende Prieto, C., additional, Cristiani, S., additional, D’Odorico, V., additional, Di Marcantonio, P., additional, Ehrenreich, D., additional, Génova Santos, R., additional, Lo Curto, G., additional, Martins, C. J. A. P., additional, Micela, G., additional, Molaro, P., additional, Nunes, N., additional, Palle, E., additional, Pepe, F., additional, Poretti, E., additional, Rebolo, R., additional, Santos, N., additional, Sousa, S., additional, Suárez Mascareño, A., additional, Tabrenero, H., additional, and Udry, S., additional

Published
2023
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7. The pristine nature of SMSS 1605−1443 revealed by ESPRESSO

Author

Aguado, D. S., primary, Caffau, E., additional, Molaro, P., additional, Allende Prieto, C., additional, Bonifacio, P., additional, González Hernández, J. I., additional, Rebolo, R., additional, Salvadori, S., additional, Zapatero Osorio, M. R., additional, Cristiani, S., additional, Pepe, F., additional, Santos, N. C., additional, Cupani, G., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Lovis, C., additional, Nunes, N. J., additional, Martins, C. J. A. P., additional, Milakovi, D., additional, Rodrigues, J., additional, Schmidt, T. M., additional, Sozzetti, A., additional, and Suárez Mascareño, A., additional

Published
2023
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8. ESPRESSO observations of HE 0107−5240 and other CEMP-no stars with [Fe/H] ≤ –4.5

Author

Aguado, D. S., primary, Molaro, P., additional, Caffau, E., additional, González Hernández, J. I., additional, Zapatero Osorio, M. R., additional, Bonifacio, P., additional, Allende Prieto, C., additional, Rebolo, R., additional, Damasso, M., additional, Suárez Mascareño, A., additional, Howell, S. B., additional, Furlan, E., additional, Cristiani, S., additional, Cupani, G., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Lovis, C., additional, Martins, C. J. A. P., additional, Milakovi, D., additional, Murphy, M. T., additional, Nunes, N. J., additional, Pepe, F., additional, Santos, N. C., additional, Schmidt, T. M., additional, and Sozzetti, A., additional

Published
2022
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9. Detection of barium in the atmospheres of the ultra-hot gas giants WASP-76b and WASP-121b

Author

Azevedo Silva, T., primary, Demangeon, O. D. S., additional, Santos, N. C., additional, Allart, R., additional, Borsa, F., additional, Cristo, E., additional, Esparza-Borges, E., additional, Seidel, J. V., additional, Palle, E., additional, Sousa, S. G., additional, Tabernero, H. M., additional, Zapatero Osorio, M. R., additional, Cristiani, S., additional, Pepe, F., additional, Rebolo, R., additional, Adibekyan, V., additional, Alibert, Y., additional, Barros, S. C. C., additional, Bouchy, F., additional, Bourrier, V., additional, Lo Curto, G., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Ehrenreich, D., additional, Figueira, P., additional, González Hernández, J. I., additional, Lovis, C., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Micela, G., additional, Molaro, P., additional, Mounzer, D., additional, Nunes, N. J., additional, Sozzetti, A., additional, Suárez Mascareño, A., additional, and Udry, S., additional

Published
2022
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10. Automatic model-based telluric correction for the ESPRESSO data reduction software

Author

Allart, R., primary, Lovis, C., additional, Faria, J., additional, Dumusque, X., additional, Sosnowska, D., additional, Figueira, P., additional, Silva, A. M., additional, Mehner, A., additional, Pepe, F., additional, Cristiani, S., additional, Rebolo, R., additional, Santos, N. C., additional, Adibekyan, V., additional, Cupani, G., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, González Hernández, J. I., additional, Martins, C. J. A. P., additional, Milaković, D., additional, Nunes, N. J., additional, Sozzetti, A., additional, Suárez Mascareño, A., additional, Tabernero, H., additional, and Zapatero Osorio, M. R., additional

Published
2022
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11. HD 23472: a multi-planetary system with three super-Earths and two potential super-Mercuries,

Author

Barros, S. C. C., primary, Demangeon, O. D. S., additional, Alibert, Y., additional, Leleu, A., additional, Adibekyan, V., additional, Lovis, C., additional, Bossini, D., additional, Sousa, S. G., additional, Hara, N., additional, Bouchy, F., additional, Lavie, B., additional, Rodrigues, J., additional, da Silva, J. Gomes, additional, Lillo-Box, J., additional, Pepe, F. A., additional, Tabernero, H. M., additional, Osorio, M. R. Zapatero, additional, Sozzetti, A., additional, Mascareño, A. Suárez, additional, Micela, G., additional, Prieto, C. Allende, additional, Cristiani, S., additional, Damasso, M., additional, Di Marcantonio, P., additional, Ehrenreich, D., additional, Faria, J., additional, Figueira, P., additional, Hernández, J. I. González, additional, Jenkins, J., additional, Lo Curto, G., additional, Martins, C. J. A. P., additional, Nunes, N. J., additional, Pallé, E., additional, Santos, N. C., additional, Rebolo, R., additional, Seager, S., additional, Twicken, J. D., additional, Udry, S., additional, Vanderspek, R., additional, and Winn, J. N., additional

Published
2022
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12. A novel framework for semi-Bayesian radial velocities through template matching

Author

Silva, A. M., primary, Faria, J. P., additional, Santos, N. C., additional, Sousa, S. G., additional, Viana, P. T. P., additional, Martins, J. H. C., additional, Figueira, P., additional, Lovis, C., additional, Pepe, F., additional, Cristiani, S., additional, Rebolo, R., additional, Allart, R., additional, Cabral, A., additional, Mehner, A., additional, Sozzetti, A., additional, Mascareño, A. Suárez, additional, Martins, C. J. A. P., additional, Ehrenreich, D., additional, Mégevand, D., additional, Palle, E., additional, Curto, G. Lo, additional, Tabernero, H. M., additional, Lillo-Box, J., additional, Hernández, J. I. González, additional, Osorio, M. R. Zapatero, additional, Hara, N. C., additional, Nunes, N. J., additional, Di Marcantonio, P., additional, Udry, S., additional, Adibekyan, V., additional, and Dumusque, X., additional

Published
2022
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13. The polar orbit of the warm Neptune GJ 436b seen with VLT/ESPRESSO

Author

Bourrier, V., primary, Zapatero Osorio, M. R., additional, Allart, R., additional, Attia, O., additional, Cretignier, M., additional, Dumusque, X., additional, Lovis, C., additional, Adibekyan, V., additional, Borsa, F., additional, Figueira, P., additional, Hernández, J. I. González, additional, Mehner, A., additional, Santos, N. C., additional, Schmidt, T., additional, Seidel, J. V., additional, Sozzetti, A., additional, Alibert, Y., additional, Casasayas-Barris, N., additional, Ehrenreich, D., additional, Lo Curto, G., additional, Martins, C. J. A. P., additional, Di Marcantonio, P., additional, Mégevand, D., additional, Nunes, N. J., additional, Palle, E., additional, Poretti, E., additional, and Sousa, S. G., additional

Published
2022
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14. CaRM: Exploring the chromatic Rossiter-McLaughlin effect

Author

Cristo, E., primary, Santos, N. C., additional, Demangeon, O., additional, Martins, J. H. C., additional, Figueira, P., additional, Casasayas-Barris, N., additional, Zapatero Osorio, M. R., additional, Borsa, F., additional, Sousa, S. G., additional, Oshagh, M., additional, Micela, G., additional, Tabernero, H. M., additional, Seidel, J. V., additional, Cristiani, S., additional, Pepe, F., additional, Rebolo, R., additional, Adibekyan, V., additional, Allart, R., additional, Alibert, Y., additional, Azevedo Silva, T., additional, Bourrier, V., additional, Cabral, A., additional, Esparza-Borges, E., additional, González Hernández, J. I., additional, Lillo-Box, J., additional, Lo Curto, G., additional, Lovis, C., additional, Manescau, A., additional, Di Marcantonio, P., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Nunes, N. J., additional, Palle, E., additional, Sozzetti, A., additional, Suárez Mascareño, A., additional, and Udry, S., additional

Published
2022
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15. Detection of barium in the atmospheres of the ultra-hot gas giants WASP-76b and WASP-121b

Author

Azevedo Silva, T., Demangeon, O. D. S., Santos, N. C., Allart, R., Borsa, F., Cristo, E., Esparza-Borges, E., Seidel, J. V., Palle, E., Sousa, S. G., Tabernero, H. M., Zapatero Osorio, M. R., Cristiani, S., Pepe, F., Rebolo, R., Adibekyan, V., Alibert, Y., Barros, S. C. C., Bouchy, F., Bourrier, V., Lo Curto, G., Di Marcantonio, P., D’Odorico, V., Ehrenreich, D., Figueira, P., González Hernández, J. I., Lovis, C., Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Mounzer, D., Nunes, N. J., Sozzetti, A., Suárez Mascareño, A., and Udry, S.

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), 530 Physics, 520 Astronomy, FOS: Physical sciences, 620 Engineering, Astrophysics - Earth and Planetary Astrophysics
Abstract

High-resolution spectroscopy studies of ultra-hot Jupiters have been key in our understanding of exoplanet atmospheres. Observing into the atmospheres of these giant planets allows for direct constraints on their atmospheric compositions and dynamics while laying the groundwork for new research regarding their formation and evolution environments. Two of the most well-studied ultra-hot Jupiters are WASP-76b and WASP-121b, with multiple detected chemical species and strong signatures of their atmospheric dynamics. We take a new look at these two exceptional ultra-hot Jupiters by reanalyzing the transit observations taken with ESPRESSO at the Very Large Telescope and attempt to detect additional species. To extract the planetary spectra of the two targets, we corrected for the telluric absorption and removed the stellar spectrum contributions. We then exploited new synthetic templates that were specifically designed for ultra-hot Jupiters in combination with the cross-correlation technique to unveil species that remained undetected by previous analyses. We add a novel detection of Ba+ to the known atmospheric compositions of WASP-76b and WASP-121b, the heaviest species detected to date in any exoplanetary atmosphere, with additional new detections of Co and Sr+ and a tentative detection of Ti+ for WASP-121b. We also confirm the presence of Ca+, Cr, Fe, H, Li, Mg, Mn, Na, and V on both WASP-76b and WASP-121b, with the addition of Ca, Fe+, and Ni for the latter. Finally, we also confirm the clear asymmetric absorption feature of Ca+ on WASP-121b, with an excess absorption at the bluer wavelengths and an effective planet radius beyond the Roche lobe. This indicates that the signal may arise from the escape of planetary atmosphere., 21 pages, 16 figures. Published in A&A Volume 666, October 2022 - Letter to the Editor

Published
2022
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16. A candidate short-period sub-Earth orbiting Proxima Centauri

Author

Faria, J. P., primary, Suárez Mascareño, A., additional, Figueira, P., additional, Silva, A. M., additional, Damasso, M., additional, Demangeon, O., additional, Pepe, F., additional, Santos, N. C., additional, Rebolo, R., additional, Cristiani, S., additional, Adibekyan, V., additional, Alibert, Y., additional, Allart, R., additional, Barros, S. C. C., additional, Cabral, A., additional, D’Odorico, V., additional, Di Marcantonio, P., additional, Dumusque, X., additional, Ehrenreich, D., additional, González Hernández, J. I., additional, Hara, N., additional, Lillo-Box, J., additional, Lo Curto, G., additional, Lovis, C., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Micela, G., additional, Molaro, P., additional, Nunes, N. J., additional, Pallé, E., additional, Poretti, E., additional, Sousa, S. G., additional, Sozzetti, A., additional, Tabernero, H., additional, Udry, S., additional, and Zapatero Osorio, M. R., additional

Published
2022
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17. HD 22496 b: The first ESPRESSO stand-alone planet discovery

Author

Lillo-Box, J., primary, Faria, J. P., additional, Suárez Mascareño, A., additional, Figueira, P., additional, Sousa, S. G., additional, Tabernero, H., additional, Lovis, C., additional, Silva, A. M., additional, Demangeon, O. D. S., additional, Benatti, S., additional, Santos, N. C., additional, Mehner, A., additional, Pepe, F. A., additional, Sozzetti, A., additional, Zapatero Osorio, M. R., additional, González Hernández, J. I., additional, Micela, G., additional, Hojjatpanah, S., additional, Rebolo, R., additional, Cristiani, S., additional, Adibekyan, V., additional, Allart, R., additional, Allende Prieto, C., additional, Cabral, A., additional, Damasso, M., additional, Di Marcantonio, P., additional, Lo Curto, G., additional, Martins, C. J. A. P., additional, Megevand, D., additional, Molaro, P., additional, Nunes, N. J., additional, Pallé, E., additional, Pasquini, L., additional, Poretti, E., additional, and Udry, S., additional

Published
2021
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18. Warm terrestrial planet with half the mass of Venus transiting a nearby star

Author

Demangeon, O. D. S., primary, Zapatero Osorio, M. R., additional, Alibert, Y., additional, Barros, S. C. C., additional, Adibekyan, V., additional, Tabernero, H. M., additional, Antoniadis-Karnavas, A., additional, Camacho, J. D., additional, Suárez Mascareño, A., additional, Oshagh, M., additional, Micela, G., additional, Sousa, S. G., additional, Lovis, C., additional, Pepe, F. A., additional, Rebolo, R., additional, Cristiani, S., additional, Santos, N. C., additional, Allart, R., additional, Allende Prieto, C., additional, Bossini, D., additional, Bouchy, F., additional, Cabral, A., additional, Damasso, M., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Ehrenreich, D., additional, Faria, J., additional, Figueira, P., additional, Génova Santos, R., additional, Haldemann, J., additional, Hara, N., additional, González Hernández, J. I., additional, Lavie, B., additional, Lillo-Box, J., additional, Lo Curto, G., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Molaro, P., additional, Nunes, N. J., additional, Pallé, E., additional, Pasquini, L., additional, Poretti, E., additional, Sozzetti, A., additional, and Udry, S., additional

Published
2021
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19. Into the storm: diving into the winds of the ultra-hot Jupiter WASP-76 b with HARPS and ESPRESSO

Author

Seidel, J. V., primary, Ehrenreich, D., additional, Allart, R., additional, Hoeijmakers, H. J., additional, Lovis, C., additional, Bourrier, V., additional, Pino, L., additional, Wyttenbach, A., additional, Adibekyan, V., additional, Alibert, Y., additional, Borsa, F., additional, Casasayas-Barris, N., additional, Cristiani, S., additional, Demangeon, O. D. S., additional, Di Marcantonio, P., additional, Figueira, P., additional, González Hernández, J. I., additional, Lillo-Box, J., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Molaro, P., additional, Nunes, N. J., additional, Palle, E., additional, Pepe, F., additional, Santos, N. C., additional, Sousa, S. G., additional, Sozzetti, A., additional, Tabernero, H. M., additional, and Zapatero Osorio, M. R., additional

Published
2021
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20. ESPRESSO high-resolution transmission spectroscopy of WASP-76 b

Author

Tabernero, H. M., Zapatero Osorio, M. R., Allart, R., Borsa, F., Casasayas Barris, N., Demangeon, O. D. S., Ehrenreich, D., Lillo Box, J., Lovis, C., Pallé, E., Sousa, S. G., Rebolo, R., Santos, N. C., Pepe, F., Cristiani, S., Adibekyan, V., Allende Prieto, C., Alibert, Y., Barros, S. C. C., Bouchy, F., Bourrier, V., D´Odorico, V., Dumusque, X., Faria, J. P., Figueira, P., Genova Santos, R., González Hernández, J. I., Hojjatpanah, S., Lo Curto, G., Lavie, B., Martins, C. J. A. P., Martins, J. H. C., Mehner, A., Micela, G., Molaro, P., Nunes, N. J., Poretti, E., Seidel, J. V., Sozzetti, A., Suárez Mascareño, A., Udry, S., Aliverti, M., Affolter, M., Alves, D., Amate, M., Ávila, G., Bandy, T., Benz, W., Bianco, A., Broeg, C., Cabral, A., Conconi, P., Coelho, J., Cumani, C., Deiries, S., Dekker, H., Delabre, B., Fragoso, A., Genoni, M., Genolet, L., Hughes, I., Knudstrup, J., Kerber, F., Landoni, M., Lizon, J. L., Maire, C., Manescau, A., Di Marcoantonio, P., Mégevand, D., Monteiro, M., Moschetti, M., Mueller, E., Modigliani, A., Oggioni, L., Oliveira, A., Pariani, G., Pasquini, L., Rasilla, J. L., Redaelli, E., Riva, M., Santana Tschudi, S., Santin, P., Santos, P., Segovia, A., Sosnowska, D., Spanò, P., Tenegi, F., Iwert, O., Zanutta, A., Zerbi, Filippo M., Cabral, A. [0000-0002-9433-871X], Monteiro, M. J. [0000-0003-0513-8116], Coelho, F. M. [0000-0002-4339-0550], Faria, J. [0000-0002-6728-244X], Santos, N. [0000-0003-4422-2919], European Research Council (ERC), Fundacao para a Ciencia e a Tecnologia (FCT), Agencia Estatal de Investigación (AEI), and Istituto Nazionale di Astrofisica (INAF)

Subjects
individual: WASP-76b [Planets and satellites], atmospheres [Planets and satellites]
Abstract

Based on guaranteed time observations collected at the European Southern Observatory under ESO programme 1102.C-0744 by the ESPRESSO Consortium. Aims. We report on ESPRESSO high-resolution transmission spectroscopic observations of two primary transits of the highly irradiated, ultra-hot Jupiter-sized planet, WASP-76b. We investigated the presence of several key atomic and molecular features of interest that may reveal the atmospheric properties of the planet. Methods. We extracted two transmission spectra of WASP-76b with R ≈ 140 000 using a procedure that allowed us to process the full ESPRESSO wavelength range (3800–7880 Å) simultaneously. We observed that at a high signal-to-noise ratio, the continuum of ESPRESSO spectra shows ‘wiggles’, which are likely caused by an interference pattern outside the spectrograph. To search for the planetary features, we visually analysed the extracted transmission spectra and cross-correlated the observations against theoretical spectra of different atomic and molecular species. Results. The following atomic features are detected: Li I, Na I, Mg I, Ca II, Mn I, K I, and Fe I. All are detected with a confidence level between 9.2 σ (Na I) and 2.8 σ (Mg I). We did not detect the following species: Ti I, Cr I, Ni I, TiO, VO, and ZrO. We impose the following 1 σ upper limits on their detectability: 60, 77, 122, 6, 8, and 8 ppm, respectively. Conclusions. We report the detection of Li I on WASP-76b for the first time. In addition, we confirm the presence of Na I and Fe I as previously reported in the literature. We show that the procedure employed in this work can detect features down to the level of ~0.1% in the transmission spectrum and ~10 ppm by means of a cross-correlation method. We discuss the presence of neutral and singly ionised features in the atmosphere of WASP-76b. This work was supported by FCT - FundacAo para a Ciencia e a Tecnologia through national funds and by FEDER through COMPETE2020 - Programa Operacional Competitividade e InternacionalizacAo by these grants: UID/FIS/04434/2019; UIDB/04434/2020; UIDP/04434/2020; PTDC/FIS-AST/ 32113/2017 & POCI-01-0145-FEDER-032113; PTDC/FIS-AST/28953/2017 & POCI-01-0145-FEDER-028953; PTDC/FIS-AST/28987/2017 & POCI-01- 0145-FEDER-028987. V.A., S.G.S., S.C.C.B. acknowledge support from FCT through Investigador FCT contracts ns degrees IF/00650/2015/CP1273/CT0001; IF/00028/2014/CP1215/CT0002; IF/01312/2014/CP1215/CT0004. S.G.S acknowledges the support from FCT through Investigador FCT contract nr. CEECIND/00826/2018 and POPH/FSE (EC). J.P.F., O.D., and J.H.C.M. acknowledge support from FCT through national funds in the form of a work contract with the references DL 57/2016/CP1364/CT0005; DL 57/2016/CP1364/CT0004; DL 57/2016/CP1364/CT0007. H.M.T. and M.R.Z.O. acknowledge financial support from the Spanish Ministerio de Ciencia, Innovacion y Universidades (MICIU) through project AYA2016-79425-C3-2. A.S.M., R.R., J.I.G.H., C.A.P. acknowledge financial support from the Spanish MICIU project AYA2017-86389-P. J.I.G.H. acknowledges financial support from the Spanish MICIU under the 2013 Ramon y Cajal program RYC-2013-14875. This work has been carried out within the framework of the National Centre of Competence in Research PlanetS supported by the Swiss National Science Foundation. The authors acknowledge the financial support of the SNSF. The INAF authors acknowledge financial support of the Italian Ministry of Education, University, and Research with PRIN 201278X4FL and the Progetti Premiali funding scheme. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (projectFOUR ACES; grant agreement No 724427). N.J.N. acknowledges support from FCT through Investigador FCT contract and exploratory project IF/00852/2015, and project PTDC/FIS-OUT/29048/2017. J.V.S. acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (project Four Aces; grant agreement No. 724427). Peerreview

Published
2021

21. The atmosphere of HD 209458b seen with ESPRESSO

Author

Casasayas-Barris, N., Palle, E., Stangret, M., Bourrier, V., Tabernero, H. M., Yan, F., Borsa, F., Allart, R., Zapatero Osorio, M. R., Lovis, C., Sousa, S. G., Chen, G., Oshagh, M., Santos, N. C., Pepe, F., Rebolo, R., Molaro, P., Cristiani, S., Adibekyan, V., Alibert, Y., Allende Prieto, C., Bouchy, F., Demangeon, O. D. S., Di Marcantonio, P., D’Odorico, V., Ehrenreich, D., Figueira, P., Génova Santos, R., González Hernández, J. I., Lavie, B., Lillo-Box, J., Lo Curto, G., Martins, C. J. A. P., Mehner, A., Micela, G., Nunes, N. J., Poretti, E., Sozzetti, A., Suárez Mascareño, A., and Udry, S.

Subjects
530 Physics, 520 Astronomy, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 500 Science, 620 Engineering
Abstract

We observed two transits of the iconic gas giant HD 209458b between 380 and 780 nm, using the high-resolution ESPRESSO spectrograph. The derived planetary transmission spectrum exhibits features at all wavelengths where the parent star shows strong absorption lines, for example, Na I, Mg I, Fe I, Fe II, Ca I, V I, Hα, and K I. We interpreted these features as the signature of the deformation of the stellar line profiles due to the Rossiter-McLaughlin effect, combined with the centre-to-limb effects on the stellar surface, which is in agreement with similar reports recently presented in the literature. We also searched for species that might be present in the planetary atmosphere but not in the stellar spectra, such as TiO and VO, and obtained a negative result. Thus, we find no evidence of any planetary absorption, including previously reported Na I, in the atmosphere of HD 209458b. The high signal-to-noise ratio in the transmission spectrum (~1700 at 590 nm) allows us to compare the modelled deformation of the stellar lines in assuming different one-dimensional stellar atmospheric models. We conclude that the differences among various models and observations remain within the precision limits of the data. However, the transmission light curves are better explained when the centre-to-limb variation is not included in the computation and only the Rossiter-McLaughlin deformation is considered. This demonstrates that ESPRESSO is currently the best facility for spatially resolving the stellar surface spectrum in the optical range using transit observations and carrying out empirical validations of stellar models.

Published
2021
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22. Six transiting planets and a chain of Laplace resonances in TOI-178

Author

Leleu, A., primary, Alibert, Y., additional, Hara, N. C., additional, Hooton, M. J., additional, Wilson, T. G., additional, Robutel, P., additional, Delisle, J.-B., additional, Laskar, J., additional, Hoyer, S., additional, Lovis, C., additional, Bryant, E. M., additional, Ducrot, E., additional, Cabrera, J., additional, Delrez, L., additional, Acton, J. S., additional, Adibekyan, V., additional, Allart, R., additional, Allende Prieto, C., additional, Alonso, R., additional, Alves, D., additional, Anderson, D. R., additional, Angerhausen, D., additional, Anglada Escudé, G., additional, Asquier, J., additional, Barrado, D., additional, Barros, S. C. C., additional, Baumjohann, W., additional, Bayliss, D., additional, Beck, M., additional, Beck, T., additional, Bekkelien, A., additional, Benz, W., additional, Billot, N., additional, Bonfanti, A., additional, Bonfils, X., additional, Bouchy, F., additional, Bourrier, V., additional, Boué, G., additional, Brandeker, A., additional, Broeg, C., additional, Buder, M., additional, Burdanov, A., additional, Burleigh, M. R., additional, Bárczy, T., additional, Cameron, A. C., additional, Chamberlain, S., additional, Charnoz, S., additional, Cooke, B. F., additional, Corral Van Damme, C., additional, Correia, A. C. M., additional, Cristiani, S., additional, Damasso, M., additional, Davies, M. B., additional, Deleuil, M., additional, Demangeon, O. D. S., additional, Demory, B.-O., additional, Di Marcantonio, P., additional, Di Persio, G., additional, Dumusque, X., additional, Ehrenreich, D., additional, Erikson, A., additional, Figueira, P., additional, Fortier, A., additional, Fossati, L., additional, Fridlund, M., additional, Futyan, D., additional, Gandolfi, D., additional, García Muñoz, A., additional, Garcia, L. J., additional, Gill, S., additional, Gillen, E., additional, Gillon, M., additional, Goad, M. R., additional, González Hernández, J. I., additional, Guedel, M., additional, Günther, M. N., additional, Haldemann, J., additional, Henderson, B., additional, Heng, K., additional, Hogan, A. E., additional, Isaak, K., additional, Jehin, E., additional, Jenkins, J. S., additional, Jordán, A., additional, Kiss, L., additional, Kristiansen, M. H., additional, Lam, K., additional, Lavie, B., additional, Lecavelier des Etangs, A., additional, Lendl, M., additional, Lillo-Box, J., additional, Lo Curto, G., additional, Magrin, D., additional, Martins, C. J. A. P., additional, Maxted, P. F. L., additional, McCormac, J., additional, Mehner, A., additional, Micela, G., additional, Molaro, P., additional, Moyano, M., additional, Murray, C. A., additional, Nascimbeni, V., additional, Nunes, N. J., additional, Olofsson, G., additional, Osborn, H. P., additional, Oshagh, M., additional, Ottensamer, R., additional, Pagano, I., additional, Pallé, E., additional, Pedersen, P. P., additional, Pepe, F. A., additional, Persson, C. M., additional, Peter, G., additional, Piotto, G., additional, Polenta, G., additional, Pollacco, D., additional, Poretti, E., additional, Pozuelos, F. J., additional, Queloz, D., additional, Ragazzoni, R., additional, Rando, N., additional, Ratti, F., additional, Rauer, H., additional, Raynard, L., additional, Rebolo, R., additional, Reimers, C., additional, Ribas, I., additional, Santos, N. C., additional, Scandariato, G., additional, Schneider, J., additional, Sebastian, D., additional, Sestovic, M., additional, Simon, A. E., additional, Smith, A. M. S., additional, Sousa, S. G., additional, Sozzetti, A., additional, Steller, M., additional, Suárez Mascareño, A., additional, Szabó, Gy. M., additional, Ségransan, D., additional, Thomas, N., additional, Thompson, S., additional, Tilbrook, R. H., additional, Triaud, A., additional, Turner, O., additional, Udry, S., additional, Van Grootel, V., additional, Venus, H., additional, Verrecchia, F., additional, Vines, J. I., additional, Walton, N. A., additional, West, R. G., additional, Wheatley, P. J., additional, Wolter, D., additional, and Zapatero Osorio, M. R., additional

Published
2021
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23. A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130)

Author

Sozzetti, A., primary, Damasso, M., additional, Bonomo, A. S., additional, Alibert, Y., additional, Sousa, S. G., additional, Adibekyan, V., additional, Zapatero Osorio, M. R., additional, González Hernández, J. I., additional, Barros, S. C. C., additional, Lillo-Box, J., additional, Stassun, K. G., additional, Winn, J., additional, Cristiani, S., additional, Pepe, F., additional, Rebolo, R., additional, Santos, N. C., additional, Allart, R., additional, Barclay, T., additional, Bouchy, F., additional, Cabral, A., additional, Ciardi, D., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Ehrenreich, D., additional, Fasnaugh, M., additional, Figueira, P., additional, Haldemann, J., additional, Jenkins, J. M., additional, Latham, D. W., additional, Lavie, B., additional, Lo Curto, G., additional, Lovis, C., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Micela, G., additional, Molaro, P., additional, Nunes, N. J., additional, Oshagh, M., additional, Otegi, J., additional, Pallé, E., additional, Poretti, E., additional, Ricker, G., additional, Rodriguez, D., additional, Seager, S., additional, Suárez Mascareño, A., additional, Twicken, J. D., additional, and Udry, S., additional

Published
2021
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24. The atmosphere of HD 209458b seen with ESPRESSO

Author

Casasayas-Barris, N., primary, Palle, E., additional, Stangret, M., additional, Bourrier, V., additional, Tabernero, H. M., additional, Yan, F., additional, Borsa, F., additional, Allart, R., additional, Zapatero Osorio, M. R., additional, Lovis, C., additional, Sousa, S. G., additional, Chen, G., additional, Oshagh, M., additional, Santos, N. C., additional, Pepe, F., additional, Rebolo, R., additional, Molaro, P., additional, Cristiani, S., additional, Adibekyan, V., additional, Alibert, Y., additional, Allende Prieto, C., additional, Bouchy, F., additional, Demangeon, O. D. S., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Ehrenreich, D., additional, Figueira, P., additional, Génova Santos, R., additional, González Hernández, J. I., additional, Lavie, B., additional, Lillo-Box, J., additional, Lo Curto, G., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Micela, G., additional, Nunes, N. J., additional, Poretti, E., additional, Sozzetti, A., additional, Suárez Mascareño, A., additional, and Udry, S., additional

Published
2021
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25. ESPRESSO high-resolution transmission spectroscopy of WASP-76 b

Author

Tabernero, H. M., primary, Zapatero Osorio, M. R., additional, Allart, R., additional, Borsa, F., additional, Casasayas-Barris, N., additional, Demangeon, O., additional, Ehrenreich, D., additional, Lillo-Box, J., additional, Lovis, C., additional, Pallé, E., additional, Sousa, S. G., additional, Rebolo, R., additional, Santos, N. C., additional, Pepe, F., additional, Cristiani, S., additional, Adibekyan, V., additional, Allende Prieto, C., additional, Alibert, Y., additional, Barros, S. C. C., additional, Bouchy, F., additional, Bourrier, V., additional, D’Odorico, V., additional, Dumusque, X., additional, Faria, J. P., additional, Figueira, P., additional, Génova Santos, R., additional, González Hernández, J. I., additional, Hojjatpanah, S., additional, Lo Curto, G., additional, Lavie, B., additional, Martins, C. J. A. P., additional, Martins, J. H. C., additional, Mehner, A., additional, Micela, G., additional, Molaro, P., additional, Nunes, N. J., additional, Poretti, E., additional, Seidel, J. V., additional, Sozzetti, A., additional, Suárez Mascareño, A., additional, Udry, S., additional, Aliverti, M., additional, Affolter, M., additional, Alves, D., additional, Amate, M., additional, Avila, G., additional, Bandy, T., additional, Benz, W., additional, Bianco, A., additional, Broeg, C., additional, Cabral, A., additional, Conconi, P., additional, Coelho, J., additional, Cumani, C., additional, Deiries, S., additional, Dekker, H., additional, Delabre, B., additional, Fragoso, A., additional, Genoni, M., additional, Genolet, L., additional, Hughes, I., additional, Knudstrup, J., additional, Kerber, F., additional, Landoni, M., additional, Lizon, J. L., additional, Maire, C., additional, Manescau, A., additional, Di Marcantonio, P., additional, Mégevand, D., additional, Monteiro, M., additional, Moschetti, M., additional, Mueller, E., additional, Modigliani, A., additional, Oggioni, L., additional, Oliveira, A., additional, Pariani, G., additional, Pasquini, L., additional, Rasilla, J. L., additional, Redaelli, E., additional, Riva, M., additional, Santana-Tschudi, S., additional, Santin, P., additional, Santos, P., additional, Segovia, A., additional, Sosnowska, D., additional, Spanò, P., additional, Tenegi, F., additional, Iwert, O., additional, Zanutta, A., additional, and Zerbi, F., additional

Published
2021
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26. ESPRESSO at VLT

Author

Pepe, F., primary, Cristiani, S., additional, Rebolo, R., additional, Santos, N. C., additional, Dekker, H., additional, Cabral, A., additional, Di Marcantonio, P., additional, Figueira, P., additional, Lo Curto, G., additional, Lovis, C., additional, Mayor, M., additional, Mégevand, D., additional, Molaro, P., additional, Riva, M., additional, Zapatero Osorio, M. R., additional, Amate, M., additional, Manescau, A., additional, Pasquini, L., additional, Zerbi, F. M., additional, Adibekyan, V., additional, Abreu, M., additional, Affolter, M., additional, Alibert, Y., additional, Aliverti, M., additional, Allart, R., additional, Allende Prieto, C., additional, Álvarez, D., additional, Alves, D., additional, Avila, G., additional, Baldini, V., additional, Bandy, T., additional, Barros, S. C. C., additional, Benz, W., additional, Bianco, A., additional, Borsa, F., additional, Bourrier, V., additional, Bouchy, F., additional, Broeg, C., additional, Calderone, G., additional, Cirami, R., additional, Coelho, J., additional, Conconi, P., additional, Coretti, I., additional, Cumani, C., additional, Cupani, G., additional, D’Odorico, V., additional, Damasso, M., additional, Deiries, S., additional, Delabre, B., additional, Demangeon, O. D. S., additional, Dumusque, X., additional, Ehrenreich, D., additional, Faria, J. P., additional, Fragoso, A., additional, Genolet, L., additional, Genoni, M., additional, Génova Santos, R., additional, González Hernández, J. I., additional, Hughes, I., additional, Iwert, O., additional, Kerber, F., additional, Knudstrup, J., additional, Landoni, M., additional, Lavie, B., additional, Lillo-Box, J., additional, Lizon, J.-L., additional, Maire, C., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Micela, G., additional, Modigliani, A., additional, Monteiro, M. A., additional, Monteiro, M. J. P. F. G., additional, Moschetti, M., additional, Murphy, M. T., additional, Nunes, N., additional, Oggioni, L., additional, Oliveira, A., additional, Oshagh, M., additional, Pallé, E., additional, Pariani, G., additional, Poretti, E., additional, Rasilla, J. L., additional, Rebordão, J., additional, Redaelli, E. M., additional, Santana Tschudi, S., additional, Santin, P., additional, Santos, P., additional, Ségransan, D., additional, Schmidt, T. M., additional, Segovia, A., additional, Sosnowska, D., additional, Sozzetti, A., additional, Sousa, S. G., additional, Spanò, P., additional, Suárez Mascareño, A., additional, Tabernero, H., additional, Tenegi, F., additional, Udry, S., additional, and Zanutta, A., additional

Published
2021
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27. Atmospheric Rossiter–McLaughlin effect and transmission spectroscopy of WASP-121b with ESPRESSO

Author

Borsa, F., primary, Allart, R., additional, Casasayas-Barris, N., additional, Tabernero, H., additional, Zapatero Osorio, M. R., additional, Cristiani, S., additional, Pepe, F., additional, Rebolo, R., additional, Santos, N. C., additional, Adibekyan, V., additional, Bourrier, V., additional, Demangeon, O. D. S., additional, Ehrenreich, D., additional, Pallé, E., additional, Sousa, S., additional, Lillo-Box, J., additional, Lovis, C., additional, Micela, G., additional, Oshagh, M., additional, Poretti, E., additional, Sozzetti, A., additional, Allende Prieto, C., additional, Alibert, Y., additional, Amate, M., additional, Benz, W., additional, Bouchy, F., additional, Cabral, A., additional, Dekker, H., additional, D’Odorico, V., additional, Di Marcantonio, P., additional, Figueira, P., additional, Genova Santos, R., additional, González Hernández, J. I., additional, Lo Curto, G., additional, Manescau, A., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Molaro, P., additional, Nunes, N. J., additional, Riva, M., additional, Suárez Mascareño, A., additional, Udry, S., additional, and Zerbi, F., additional

Published
2020
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28. WASP-127b: a misaligned planet with a partly cloudy atmosphere and tenuous sodium signature seen by ESPRESSO

Author

Allart, R., primary, Pino, L., additional, Lovis, C., additional, Sousa, S. G., additional, Casasayas-Barris, N., additional, Zapatero Osorio, M. R., additional, Cretignier, M., additional, Palle, E., additional, Pepe, F., additional, Cristiani, S., additional, Rebolo, R., additional, Santos, N. C., additional, Borsa, F., additional, Bourrier, V., additional, Demangeon, O. D. S., additional, Ehrenreich, D., additional, Lavie, B., additional, Lendl, M., additional, Lillo-Box, J., additional, Micela, G., additional, Oshagh, M., additional, Sozzetti, A., additional, Tabernero, H., additional, Adibekyan, V., additional, Allende Prieto, C., additional, Alibert, Y., additional, Amate, M., additional, Benz, W., additional, Bouchy, F., additional, Cabral, A., additional, Dekker, H., additional, D’Odorico, V., additional, Di Marcantonio, P., additional, Dumusque, X., additional, Figueira, P., additional, Genova Santos, R., additional, González Hernández, J. I., additional, Lo Curto, G., additional, Manescau, A., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Molaro, P., additional, Nunes, N. J., additional, Poretti, E., additional, Riva, M., additional, Suárez Mascareño, A., additional, Udry, S., additional, and Zerbi, F., additional

Published
2020
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29. Broadband transmission spectroscopy of HD 209458b with ESPRESSO: evidence for Na, TiO, or both

Author

Santos, N. C., primary, Cristo, E., additional, Demangeon, O., additional, Oshagh, M., additional, Allart, R., additional, Barros, S. C. C., additional, Borsa, F., additional, Bourrier, V., additional, Casasayas-Barris, N., additional, Ehrenreich, D., additional, Faria, J. P., additional, Figueira, P., additional, Martins, J. H. C., additional, Micela, G., additional, Pallé, E., additional, Sozzetti, A., additional, Tabernero, H. M., additional, Zapatero Osorio, M. R., additional, Pepe, F., additional, Cristiani, S., additional, Rebolo, R., additional, Adibekyan, V., additional, Allende Prieto, C., additional, Alibert, Y., additional, Bouchy, F., additional, Cabral, A., additional, Dekker, H., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Dumusque, X., additional, González Hernández, J. I., additional, Lavie, B., additional, Lo Curto, G., additional, Lovis, C., additional, Manescau, A., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Molaro, P., additional, Nunes, N. J., additional, Poretti, E., additional, Riva, M., additional, Sousa, S. G., additional, Suárez Mascareño, A., additional, and Udry, S., additional

Published
2020
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30. A precise architecture characterization of theπMensae planetary system

Author

Damasso, M., primary, Sozzetti, A., additional, Lovis, C., additional, Barros, S. C. C., additional, Sousa, S. G., additional, Demangeon, O. D. S., additional, Faria, J. P., additional, Lillo-Box, J., additional, Cristiani, S., additional, Pepe, F., additional, Rebolo, R., additional, Santos, N. C., additional, Zapatero Osorio, M. R., additional, González Hernández, J. I., additional, Amate, M., additional, Pasquini, L., additional, Zerbi, F. M., additional, Adibekyan, V., additional, Abreu, M., additional, Affolter, M., additional, Alibert, Y., additional, Aliverti, M., additional, Allart, R., additional, Allende Prieto, C., additional, Álvarez, D., additional, Alves, D., additional, Avila, G., additional, Baldini, V., additional, Bandy, T., additional, Benz, W., additional, Bianco, A., additional, Borsa, F., additional, Bossini, D., additional, Bourrier, V., additional, Bouchy, F., additional, Broeg, C., additional, Cabral, A., additional, Calderone, G., additional, Cirami, R., additional, Coelho, J., additional, Conconi, P., additional, Coretti, I., additional, Cumani, C., additional, Cupani, G., additional, D’Odorico, V., additional, Deiries, S., additional, Dekker, H., additional, Delabre, B., additional, Di Marcantonio, P., additional, Dumusque, X., additional, Ehrenreich, D., additional, Figueira, P., additional, Fragoso, A., additional, Genolet, L., additional, Genoni, M., additional, Génova Santos, R., additional, Hughes, I., additional, Iwert, O., additional, Kerber, F., additional, Knudstrup, J., additional, Landoni, M., additional, Lavie, B., additional, Lizon, J.-L., additional, Lo Curto, G., additional, Maire, C., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Micela, G., additional, Modigliani, A., additional, Molaro, P., additional, Monteiro, M. A., additional, Monteiro, M. J. P. F. G., additional, Moschetti, M., additional, Mueller, E., additional, Murphy, M. T., additional, Nunes, N., additional, Oggioni, L., additional, Oliveira, A., additional, Oshagh, M., additional, Pallé, E., additional, Pariani, G., additional, Poretti, E., additional, Rasilla, J. L., additional, Rebordão, J., additional, Redaelli, E. M., additional, Riva, M., additional, Santana Tschudi, S., additional, Santin, P., additional, Santos, P., additional, Ségransan, D., additional, Schmidt, T. M., additional, Segovia, A., additional, Sosnowska, D., additional, Spanò, P., additional, Suárez Mascareño, A., additional, Tabernero, H., additional, Tenegi, F., additional, Udry, S., additional, and Zanutta, A., additional

Published
2020
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31. Characterization of the K2-38 planetary system

Author

Toledo-Padrón, B., primary, Lovis, C., additional, Suárez Mascareño, A., additional, Barros, S. C. C., additional, González Hernández, J. I., additional, Sozzetti, A., additional, Bouchy, F., additional, Zapatero Osorio, M. R., additional, Rebolo, R., additional, Cristiani, S., additional, Pepe, F. A., additional, Santos, N. C., additional, Sousa, S. G., additional, Tabernero, H. M., additional, Lillo-Box, J., additional, Bossini, D., additional, Adibekyan, V., additional, Allart, R., additional, Damasso, M., additional, D’Odorico, V., additional, Figueira, P., additional, Lavie, B., additional, Lo Curto, G., additional, Mehner, A., additional, Micela, G., additional, Modigliani, A., additional, Nunes, N. J., additional, Pallé, E., additional, Abreu, M., additional, Affolter, M., additional, Alibert, Y., additional, Aliverti, M., additional, Allende Prieto, C., additional, Alves, D., additional, Amate, M., additional, Avila, G., additional, Baldini, V., additional, Bandy, T., additional, Benatti, S., additional, Benz, W., additional, Bianco, A., additional, Broeg, C., additional, Cabral, A., additional, Calderone, G., additional, Cirami, R., additional, Coelho, J., additional, Conconi, P., additional, Coretti, I., additional, Cumani, C., additional, Cupani, G., additional, Deiries, S., additional, Dekker, H., additional, Delabre, B., additional, Demangeon, O., additional, Di Marcantonio, P., additional, Ehrenreich, D., additional, Fragoso, A., additional, Genolet, L., additional, Genoni, M., additional, Génova Santos, R., additional, Hughes, I., additional, Iwert, O., additional, Knudstrup, J., additional, Landoni, M., additional, Lizon, J. L., additional, Maire, C., additional, Manescau, A., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Molaro, P., additional, Monteiro, M. J. P. F. G., additional, Monteiro, M. A., additional, Moschetti, M., additional, Mueller, E., additional, Oggioni, L., additional, Oliveira, A., additional, Oshagh, M., additional, Pariani, G., additional, Pasquini, L., additional, Poretti, E., additional, Rasilla, J. L., additional, Redaelli, E., additional, Riva, M., additional, Santana Tschudi, S., additional, Santin, P., additional, Santos, P., additional, Segovia, A., additional, Sosnowska, D., additional, Spanò, P., additional, Tenegi, F., additional, Udry, S., additional, Zanutta, A., additional, and Zerbi, F., additional

Published
2020
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32. Revisiting Proxima with ESPRESSO

Author

Suárez Mascareño, A., primary, Faria, J. P., additional, Figueira, P., additional, Lovis, C., additional, Damasso, M., additional, González Hernández, J. I., additional, Rebolo, R., additional, Cristiani, S., additional, Pepe, F., additional, Santos, N. C., additional, Zapatero Osorio, M. R., additional, Adibekyan, V., additional, Hojjatpanah, S., additional, Sozzetti, A., additional, Murgas, F., additional, Abreu, M., additional, Affolter, M., additional, Alibert, Y., additional, Aliverti, M., additional, Allart, R., additional, Allende Prieto, C., additional, Alves, D., additional, Amate, M., additional, Avila, G., additional, Baldini, V., additional, Bandi, T., additional, Barros, S. C. C., additional, Bianco, A., additional, Benz, W., additional, Bouchy, F., additional, Broeng, C., additional, Cabral, A., additional, Calderone, G., additional, Cirami, R., additional, Coelho, J., additional, Conconi, P., additional, Coretti, I., additional, Cumani, C., additional, Cupani, G., additional, D’Odorico, V., additional, Deiries, S., additional, Delabre, B., additional, Di Marcantonio, P., additional, Dumusque, X., additional, Ehrenreich, D., additional, Fragoso, A., additional, Genolet, L., additional, Genoni, M., additional, Génova Santos, R., additional, Hughes, I., additional, Iwert, O., additional, Kerber, F., additional, Knusdstrup, J., additional, Landoni, M., additional, Lavie, B., additional, Lillo-Box, J., additional, Lizon, J., additional, Lo Curto, G., additional, Maire, C., additional, Manescau, A., additional, Martins, C. J. A. P., additional, Mégevand, D., additional, Mehner, A., additional, Micela, G., additional, Modigliani, A., additional, Molaro, P., additional, Monteiro, M. A., additional, Monteiro, M. J. P. F. G., additional, Moschetti, M., additional, Mueller, E., additional, Nunes, N. J., additional, Oggioni, L., additional, Oliveira, A., additional, Pallé, E., additional, Pariani, G., additional, Pasquini, L., additional, Poretti, E., additional, Rasilla, J. L., additional, Redaelli, E., additional, Riva, M., additional, Santana Tschudi, S., additional, Santin, P., additional, Santos, P., additional, Segovia, A., additional, Sosnowska, D., additional, Sousa, S., additional, Spanò, P., additional, Tenegi, F., additional, Udry, S., additional, Zanutta, A., additional, and Zerbi, F., additional

Published
2020
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33. ESPRESSO highlights the binary nature of the ultra-metal-poor giant HE 0107−5240

Author

Bonifacio, P., primary, Molaro, P., additional, Adibekyan, V., additional, Aguado, D., additional, Alibert, Y., additional, Allende Prieto, C., additional, Caffau, E., additional, Cristiani, S., additional, Cupani, G., additional, Di Marcantonio, P., additional, D’Odorico, V., additional, Ehrenreich, D., additional, Figueira, P., additional, Genova, R., additional, González Hernández, J. I., additional, Lo Curto, G., additional, Lovis, C., additional, Martins, C. J. A. P., additional, Mehner, A., additional, Micela, G., additional, Monaco, L., additional, Nunes, N. J., additional, Pepe, F. A., additional, Poretti, E., additional, Rebolo, R., additional, Santos, N. C., additional, Saviane, I., additional, Sousa, S., additional, Sozzetti, A., additional, Suarez-Mascareño, A., additional, Udry, S., additional, and Zapatero-Osorio, M. R., additional

Published
2020
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36. A precise architecture characterization of the π Mensae planetary system

Author

Damasso, M., Sozzetti, A., Lovis, C., Barros, S. C. C., Sousa, S. G., Demangeon, O. D. S., Faria, J. P., Lillo-Box, J., Cristiani, S., Pepe, F., Rebolo, R., Santos, N. C., Zapatero Osorio, M. R., González Hernández, J. I., Amate, M., Pasquini, L., Zerbi, F. M., Adibekyan, V., Abreu, M., Affolter, M., Alibert, Y., Aliverti, M., Allart, R., Allende Prieto, C., Álvarez, D., Alves, D., Avila, G., Baldini, V., Bandy, T., Benz, Willy, Bianco, A., Borsa, F., Bossini, D., Bourrier, V., Bouchy, F., Broeg, C., Cabral, A., Calderone, G., Cirami, R., Coelho, J., Conconi, P., Coretti, I., Cumani, C., Cupani, G., D’Odorico, V., Deiries, S., Dekker, H., Delabre, B., Di Marcantonio, P., Dumusque, X., Ehrenreich, D., Figueira, P., Fragoso, A., Genolet, L., Genoni, M., Génova Santos, R., Hughes, I., Iwert, O., Kerber, F., Knudstrup, J., Landoni, M., Lavie, B., Lizon, J.-L., Lo Curto, G., Maire, C., Martins, C. J. A. P., Mégevand, D., Mehner, A., Micela, G., Modigliani, A., Molaro, P., Monteiro, M. A., Monteiro, M. J. P. F. G., Moschetti, M., Mueller, E., Murphy, M. T., Nunes, N., Oggioni, L., Oliveira, A., Oshagh, M., Pallé, E., Pariani, G., Poretti, E., Rasilla, J. L., Rebordão, J., Redaelli, E. M., Riva, M., Santana Tschudi, S., Santin, P., Santos, P., Ségransan, D., Schmidt, T. M., Segovia, A., Sosnowska, D., Spanò, P., Suárez Mascareño, A., Tabernero, H., Tenegi, F., Udry, S., and Zanutta, A.

Subjects
13. Climate action, 520 Astronomy, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 500 Science, 620 Engineering, Astrophysics::Galaxy Astrophysics
Abstract

The bright star π Men was chosen as the first target for a radial velocity follow-up to test the performance of ESPRESSO, the new high-resolution spectrograph at the ESO's Very-Large Telescope (VLT). The star hosts a multi-planet system (a transiting 4 M⊕ planet at ∼0.07 au, and a sub-stellar companion on a ∼2100-day eccentric orbit) which is particularly appealing for a precise multi-technique characterization. With the new ESPRESSO observations, that cover a time span of 200 days, we aim to improve the precision and accuracy of the planet parameters and search for additional low-mass companions. We also take advantage of new photometric transits of π Men c observed by TESS over a time span that overlaps with that of the ESPRESSO follow-up campaign. We analyse the enlarged spectroscopic and photometric datasets and compare the results to those in the literature. We further characterize the system by means of absolute astrometry with Hipparcos and Gaia. We used the spectra of ESPRESSO for an independent determination of the stellar fundamental parameters. We present a precise characterization of the planetary system around π Men. The ESPRESSO radial velocities alone (with typical uncertainty of 10 cm/s) allow for a precise retrieval of the Doppler signal induced by π Men c. The residuals show an RMS of 1.2 m/s, and we can exclude companions with a minimum mass less than ∼2 M⊕ within the orbit of π Men c). We improve the ephemeris of π Men c using 18 additional TESS transits, and in combination with the astrometric measurements, we determine the inclination of the orbital plane of π Men b with high precision (ib=45.8+1.4−1.1 deg). This leads to the precise measurement of its absolute mass mb=14.1+0.5−0.4 MJup, and shows that the planetary orbital planes are highly misaligned.

37. Broadband transmission spectroscopy of HD 209458b with ESPRESSO: evidence for Na, TiO, or both

Author

Santos, N. C., Cristo, E., Demangeon, O., Oshagh, M., Allart, R., Barros, S. C. C., Borsa, F., Bourrier, V., Casasayas-Barris, N., Ehrenreich, D., Faria, J. P., Figueira, P., Martins, J. H. C., Micela, G., Pallé, E., Sozzetti, A., Tabernero, H. M., Zapatero Osorio, M. R., Pepe, F., Cristiani, S., Rebolo, R., Adibekyan, V., Allende Prieto, C., Alibert, Y., Bouchy, F., Cabral, A., Dekker, H., Di Marcantonio, P., D’Odorico, V., Dumusque, X., González Hernández, J. I., Lavie, B., Lo Curto, G., Lovis, C., Manescau, A., Martins, C. J. A. P., Mégevand, D., Mehner, A., Molaro, P., Nunes, N. J., Poretti, E., Riva, M., Sousa, S. G., Suárez Mascareño, A., and Udry, S.

Subjects
13. Climate action, 520 Astronomy, Astrophysics::Earth and Planetary Astrophysics, 500 Science, 620 Engineering, 7. Clean energy, 3. Good health
Abstract

The detection and characterization of exoplanet atmospheres is currently one of the main drivers pushing the development of new observing facilities. In this context, high-resolution spectrographs are {proving} their potential and showing that high-resolution spectroscopy will be paramount in this field. We aim to make use of ESPRESSO high-resolution spectra, which cover two transits of HD209458b, to probe the broadband transmission optical spectrum of the planet. We applied the chromatic Rossiter-McLaughin method to derive the transmission spectrum of HD209458b. We compared the results with previous HST observations and with synthetic spectra. We recover a transmission spectrum of HD209458b similar to the one obtained with HST data. The models suggest that the observed signal can be explained by only Na, only TiO, or both Na and TiO, even though none is fully capable of explaining our observed transmission spectrum. Extra absorbers may be needed to explain the full dataset, though modeling approximations and observational errors can also be responsible for the observed mismatch. Using the chromatic Rossiter-McLaughlin technique, ESPRESSO is able to provide broadband transmission spectra of exoplanets from the ground, in conjunction with space-based facilities, opening good perspectives for similar studies of other planets.

38. WASP-127b: a misaligned planet with a partly cloudy atmosphere and tenuous sodium signature seen by ESPRESSO

Author

Allart, R., Pino, L., Lovis, C., Sousa, S. G., Casasayas-Barris, N., Zapatero Osorio, M. R., Cretignier, M., Palle, E., Pepe, F., Cristiani, S., Rebolo, R., Santos, N. C., Borsa, F., Bourrier, V., Demangeon, O. D. S., Ehrenreich, D., Lavie, B., Lendl, M., Lillo-Box, J., Micela, G., Oshagh, M., Sozzetti, A., Tabernero, H., Adibekyan, V., Allende Prieto, C., Alibert, Y., Amate, M., Benz, W., Bouchy, F., Cabral, A., Dekker, H., D’Odorico, V., Di Marcantonio, P., Dumusque, X., Figueira, P., Genova Santos, R., González Hernández, J. I., Lo Curto, G., Manescau, A., Martins, C. J. A. P., Mégevand, D., Mehner, A., Molaro, P., Nunes, N. J., Poretti, E., Riva, M., Suárez Mascareño, A., Udry, S., and Zerbi, F.

Subjects
13. Climate action, 520 Astronomy, Astrophysics::Earth and Planetary Astrophysics, 500 Science, 620 Engineering
Abstract

The study of exoplanet atmospheres is essential to understand the formation, evolution and composition of exoplanets. The transmission spectroscopy technique is playing a significant role in this domain. In particular, the combination of state-of-the-art spectrographs at low- and high-spectral resolution is key to our understanding of atmospheric structure and composition. Two transits of the close-in sub Saturn-mass planet,WASP-127b, have been observed with ESPRESSO in the frame of the Guaranteed Time Observations Consortium. Transit observations allow us to study simultaneously the system architecture and the exoplanet atmosphere. We found that this planet is orbiting its slowly rotating host star (veq sin(i)=0.53+/-0.07 km/s) on a retrograde misaligned orbit (lambda=-128.41+/-5.60 deg). We detected the sodium line core at the 9-sigma confidence level with an excess absorption of 0.3+/-0.04%, a blueshift of 2.7+/-0.79 km/s and a FWHM of 15.18+/-1.75 km/s. However, we did not detect the presence of other atomic species but set upper-limits of only few scale heights. Finally, we put a 3-sigma upper limit, to the average depth of the 1600 strongest water lines at equilibrium temperature in the visible band, of 38 ppm. This constrains the cloud-deck pressure between 0.3 and 0.5 mbar by combining our data with low-resolution data in the near-infrared and models computed for this planet. To conclude, WASP-127b, with an age of about 10 Gyr, is an unexpected exoplanet by its orbital architecture but also by the small extension of its sodium atmosphere (~7 scale heights). ESPRESSO allows us to take a step forward in the detection of weak signals, thus bringing strong constraints on the presence of clouds in exoplanet atmospheres. The framework proposed in this work can be applied to search for molecular species and study cloud-decks in other exoplanets.

39. A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130)

Author

J. I. González Hernández, Thomas Barclay, Yann Alibert, George R. Ricker, Keivan G. Stassun, Paolo Molaro, Stefano Cristiani, J. Haldemann, Jorge Lillo-Box, M. Fasnaugh, Giuseppina Micela, Stéphane Udry, François Bouchy, Baptiste Lavie, Enric Palle, G. Lo Curto, S. G. Sousa, J. F. Otegi, Francesco Pepe, Mahmoudreza Oshagh, Rafael Rebolo, Valentina D'Odorico, Jon M. Jenkins, Pedro Figueira, Nuno C. Santos, Carlos Martins, Nelson J. Nunes, Daniel Conde Rodriguez, Aldo S. Bonomo, David Ehrenreich, Joshua N. Winn, Mario Damasso, Ennio Poretti, Romain Allart, A. Suárez Mascareño, C. Lovis, Alexandre Cabral, J. D. Twicken, V. Adibekyan, Sara Seager, David R. Ciardi, M. R. Zapatero Osorio, P. Di Marcantonio, S. C. C. Barros, D. Mégevand, Alessandro Sozzetti, David W. Latham, Andrea Mehner, Sozzetti, A. [0000-0002-7504-365X], Nunes, N. [0000-0002-3837-6914], Haldemann, J. [0000-0003-1231-2389], Istituto Nazionale di Astrofisica (INAF), Agenzia Spaziale Italiana (ASI), iss National Science Foundation (SNSF), Fundacao para a Ciencia e a Tecnologia (FCT), European Commission (EC), European Research Council (ERC), Ministerio de Economía y Competitividad (MINECO), and Agencia Estatal de Investigación (AEI) http://dx.doi.org/10.13039/501100011033

Subjects
530 Physics, FOS: Physical sciences, Astrophysics, 01 natural sciences, individual: HD 5278 (TOI-130) [Stars], Espresso, Neptune, 0103 physical sciences, miscellaneous [Methods], 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Physics, Earth and Planetary Astrophysics (astro-ph.EP), radial velocities [Techniques], 010308 nuclear & particles physics, 520 Astronomy, photometric [Techniques], Astronomy and Astrophysics, Planetary system, 500 Science, 620 Engineering, Planetary systems, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, composition [Planets and satellites], Astrophysics - Earth and Planetary Astrophysics
Abstract

Context. Transiting sub-Neptune-type planets, with radii approximately between 2 and 4 R⊕, are of particular interest as their study allows us to gain insight into the formation and evolution of a class of planets that are not found in our Solar System. Aims. We exploit the extreme radial velocity (RV) precision of the ultra-stable echelle spectrograph ESPRESSO on the VLT to unveil the physical properties of the transiting sub-Neptune TOI-130 b, uncovered by the TESS mission orbiting the nearby, bright, late F-type star HD 5278 (TOI-130) with a period of Pb = 14.3 days. Methods. We used 43 ESPRESSO high-resolution spectra and broad-band photometry information to derive accurate stellar atmospheric and physical parameters of HD 5278. We exploited the TESS light curve and spectroscopic diagnostics to gauge the impact of stellar activity on the ESPRESSO RVs. We performed separate as well as joint analyses of the TESS photometry and the ESPRESSO RVs using fully Bayesian frameworks to determine the system parameters. Results. Based on the ESPRESSO spectra, the updated stellar parameters of HD 5278 are Teff = 6203 ± 64 K, log g = 4.50 ± 0.11 dex, [Fe/H] = −0.12 ± 0.04 dex, M⋆ = 1.126−0.035+0.036 M⊙, and R⋆ = 1.194−0.016+0.017 R⊙. We determine HD 5278 b’s mass and radius to be Mb = 7.8−1.4+1.5 M⊕ and Rb = 2.45 ± 0.05R⊕. The derived mean density, ϱb = 2.9−0.5+0.6 g cm−3, is consistent with the bulk composition of a sub-Neptune with a substantial (~ 30%) water mass fraction and with a gas envelope comprising ~17% of the measured radius. Given the host brightness and irradiation levels, HD 5278 b is one of the best targetsorbiting G-F primaries for follow-up atmospheric characterization measurements with HST and JWST. We discover a second, non-transiting companion in the system, with a period of Pc = 40.87−0.17+0.18 days and a minimum mass of Mc sin ic = 18.4−1.9+1.8 M⊕. We study emerging trends in parameters space (e.g., mass, radius, stellar insolation, and mean density) of the growing population of transiting sub-Neptunes, and provide statistical evidence for a low occurrence of close-in, 10 − 15M⊕ companions around G-F primaries with Teff ≳ 5500 K. The authors acknowledge the ESPRESSO project team for its effort and dedication in building the ESPRESSO instrument. This work has received financial support from the ASI-INAF agreement no. 2018-16-HH.0. M.D. acknowledges financial support from the FP7-SPACE Project ETAEARTH (GA No. 313014). A.S. We gratefully acknowledges support from the Italian Space Agency (ASI) under contract 2018-24-HH.0. The INAF authors acknowledge financial support of the Italian Ministry of Education, University, and Research with PRIN 201278X4FL and the Progetti Premiali funding scheme.to acknowledge the Swiss National Science Foundation (SNSF) for supporting research with ESPRESSO through the SNSF grants no. 140649, 152721, and 166227. The ESPRESSO Instrument Project was partially funded through SNSF's FLARE Programme for large infrastructures. This work has been carried out in part within the framework of the NCCR PlanetS supported by the Swiss National Science Foundation. This work was supported by FCT -Funda cao para a Ciencia e Tecnologia through national funds and by FEDER through COMPETE2020 -Programa Operacional Competitividade e Internacionaliza cao by these grants: UID/FIS/04434/2019; UIDB/04434/2020; UIDP/04434/2020; PTDC/FIS-AST/32113/2017 POCI-01-0145-FEDER-032113; PTDC/FIS-AST/28953/2017 & POCI-01-0145-FEDER-028953; PTDC/FIS-AST/28987/2017 & POCI-01-0145-FEDER-028987; PTDC/FIS-OUT/29048/2017 & IF/00852/2015. S.C.C.B. acknowledges support from FCT through contract nr. IF/01312/2014/CP1215/CT0004. S.G.S acknowledges the support from FCT through Investigator FCT contract nr. CEECIND/00826/2018 and POPH/FSE (EC). This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (project Four Aces, grant agreement no. 724427). V.A. acknowledges the support from FCT through Investigator FCT contract nr. IF/00650/2015/CP1273/CT0001. Y.A. and J.H. acknowledge the Swiss National Science Foundation (SNSF) for supporting research through the SNSF grant 200 020_192038. J.I.G.H. acknowledges financial support from Spanish Ministry of Science and Innovation (MICINN) under the 2013 Ramon y Cajal programme RYC-2013-14 875. J.I.G.H., A.S.M., R.R., and C.A.P. acknowledge financial support from the Spanish MICINN AYA2017-86 389-P. A.S.M. acknowledges financial support from the Spanish Ministry of Science and Innovation (MICINN) under the 2019 Juan de la Cierva Programme. R.A. is a Trottier Postdoctoral Fellow and acknowledges support from the Trottier Family Foundation. This work was supported in part through a grant from FRQNT. This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This publication makes use of The Data & Analysis Center for Exoplanets (DACE), which is a facility based at the University of Geneva (CH) dedicated to extrasolar planets data visualization, exchange and analysis. DACE is a platform of the Swiss National Centre of Competence in Research (NCCR) PlanetS, federating the expertise in Exoplanet research. The DACE platform is available at https://dace.unige.ch.This paper includes data collected by the TESS mission, which are publicly available from the Mikulski Archive for Space Telescopes (MAST).; We acknowledge the use of public TESS Alert data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. Peerreview

Published
2021
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