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Transmission spectroscopy of MASCARA-1b with ESPRESSO: Challenges of overlapping orbital and Doppler tracks

Casasayas-Barris, N. and Borsa, F. and Palle, E. and Allart, R. and Bourrier, V. and Gonzalez Hernandez, J. I. and Kesseli, A. and Sánchez-López, A. and Zapatero Osorio, M. R. and Snellen, I. A. G. and Orell-Miquel, J. and Stangret, M. and Esparza-Borges, E. and Lovis, C. and Hooton, M. J. and Lendl, M. and Smith, Alexis M S and Pepe, F. and Rebolo, R. and Cristiani, S. and Santos, N. C. and Adibekyan, V. and Alibert, Y. and Cristo, E. and Demangeon, O. D. S. and Figueira, P. and Di Marcantonio, P. and Martins, C. J. A. P. and Micela, G. and Seidel, J. V. and Azevedo Silva, T. and Sousa, S. G. and Sozzetti, A. and Suárez Mascareño, A. and Tabernero, H. M. (2022) Transmission spectroscopy of MASCARA-1b with ESPRESSO: Challenges of overlapping orbital and Doppler tracks. Astronomy & Astrophysics, 664, A121. EDP Sciences. doi: 10.1051/0004-6361/202143016. ISSN 0004-6361.

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Official URL: https://www.aanda.org/articles/aa/full_html/2022/08/aa43016-21/aa43016-21.html

Abstract

Atmospheric studies at high spectral resolution have shown the presence of molecules, neutral and ionised metals, and hydrogen in the transmission spectrum of ultra-hot Jupiters, and have started to probe the dynamics of their atmospheres. We analyse the transmission spectrum of MASCARA-1b, one of the densest ultra-hot Jupiters orbiting a bright (V = 8.3) star. We focus on the CaII H&K, NaI doublet, LiI, Hα, and KI D1 spectral lines and on the cross-correlated FeI, Fe II, CaI, YI, VI, VII, CaH, and TiO lines. For those species that are not present in the stellar spectrum, no detections are reported, but we are able to measure upper limits with an excellent precision (~10 ppm for particular species) thanks to the signal-to-noise ratio (S/N) achieved with Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations (ESPRESSO) observations. For those species that are present in the stellar spectrum and whose planet-occulted spectral lines induce spurious features in the planetary transmission spectrum, an accurate modelling of the Rossiter-McLaughlin effect (RM) and centre-to-limb variations (CLV) is necessary to recover possible atmospheric signals. In the case of MASCARA-1b, this is difficult due to the overlap between the radial velocities of the stellar surface regions occulted by MASCARA-1b and the orbital track along which the planet atmospheric signal is expected to be found. To try to disentangle a possible planetary signal, we compare our results with models of the RM and CLV effects, and estimate the uncertainties of our models depending on the different system parameters. Unfortunately, more precise measurements of the spin-orbit angle are necessary to better constrain the planet-occulted track and correct for the transit effects in the transmission spectrum with enough precision to be able to detect or discard possible planetary absorptions. Finally, we discuss the possibility that non-detections are related to the low absorption expected for a high surface gravity planet such as MASCARA-1b. Other techniques such as emission spectroscopy may be more useful for exploring their atmospheric composition. Based on guaranteed time observations (GTOs) collected at the European Southern Observatory (ESO) under ESO programme 1102.C-0744 by the ESPRESSO Consortium.

Item URL in elib:https://elib.dlr.de/188098/
Document Type:Article
Title:Transmission spectroscopy of MASCARA-1b with ESPRESSO: Challenges of overlapping orbital and Doppler tracks
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Casasayas-Barris, N.Leiden Observatory, Leiden University, Postbus 9513, 2300 RA, Leiden, The NetherlandsUNSPECIFIED
Borsa, F.INAF – Osservatorio Astronomico di Brera, Via Brera 28, 20121 Milano, ItalyUNSPECIFIED
Palle, E.Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain | Departamento de Astrofisica, Universidad de La Laguna, 38206 La Laguna, SpainUNSPECIFIED
Allart, R.Observatoire Astronomique de l’Université de Genève, CheminPegasi 51, Versoix, SwitzerlandUNSPECIFIED
Bourrier, V.Université de Genève, SwitzerlandUNSPECIFIED
Gonzalez Hernandez, J. I.Departamento de Astrofisica, Universidad de La Laguna, 38206 La Laguna, SpainUNSPECIFIED
Kesseli, A.Leiden Observatory, Leiden University, Postbus 9513, 2300 RA, Leiden, The NetherlandsUNSPECIFIED
Sánchez-López, A.Leiden Observatory, Leiden University, Postbus 9513, 2300 RA, Leiden, The NetherlandsUNSPECIFIED
Zapatero Osorio, M. R.Centro de Astrobiología (CSIC-INTA), Crta. Ajalvir km 4, 28850Torrejón de Ardoz, Madrid, SpainUNSPECIFIED
Snellen, I. A. G.Leiden Observatory, Leiden University, Postbus 9513, 2300 RA, Leiden, The NetherlandsUNSPECIFIED
Orell-Miquel, J.Instituto de Astrofísica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIED
Stangret, M.Instituto de Astrofísica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIED
Esparza-Borges, E.Instituto de Astrofísica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIED
Lovis, C.Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Hooton, M. J.Physikalisches Institut, University of Bern, Bern, SwitzerlandUNSPECIFIED
Lendl, M.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland; Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, 8042, Graz, AustriaUNSPECIFIED
Smith, Alexis M SUNSPECIFIEDhttps://orcid.org/0000-0002-2386-4341
Pepe, F.Observatoire astronomique de l Universite de GeneveUNSPECIFIED
Rebolo, R.Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife,Spain; Departamento de Astrofísica, Universidad de La Laguna, 38206 LaLaguna, Tenerife, SpainUNSPECIFIED
Cristiani, S.INAF – Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11,34143 Trieste, ItalyUNSPECIFIED
Santos, N. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, PortugalUNSPECIFIED
Adibekyan, V.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Alibert, Y.Physikalisches Institut, University of Bern;Observatoire de Besançon, Institut UTINAM, FranceUNSPECIFIED
Cristo, E.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, Portugal; Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Rua Campo Alegre, 4169-007, Porto, PortugalUNSPECIFIED
Demangeon, O. D. S.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, PortugalUNSPECIFIED
Figueira, P.European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile; Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Di Marcantonio, P.INAF – Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11,34143 Trieste, ItalyUNSPECIFIED
Martins, C. J. A. P.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto,CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Centro de Astrofísica da Universidade do Porto, Rua das Estrelas,4150-762 Porto, PortugalUNSPECIFIED
Micela, G.INAF - Osservatorio Astronomico di Palermo, ItalyUNSPECIFIED
Seidel, J. V.European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Casilla, 19001, Santiago de Chile, ChileUNSPECIFIED
Azevedo Silva, T.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, Portugal; Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Rua Campo Alegre, 4169-007, Porto, PortugalUNSPECIFIED
Sousa, S. G.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, PortugalUNSPECIFIED
Sozzetti, A.INAF – Osservatorio Astrofisico di Torino, via Osservatorio 20,10025 Pino Torinese, ItalyUNSPECIFIED
Suárez Mascareño, A.Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife,Spain; Departamento de Astrofísica, Universidad de La Laguna, 38206 LaLaguna, Tenerife, SpainUNSPECIFIED
Tabernero, H. M.Centro de Astrobiología (CSIC-INTA), Carretera de Ajalvir, km 4, 28850, Torrejón de Ardoz, Madrid, SpainUNSPECIFIED
Date:2022
Journal or Publication Title:Astronomy & Astrophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:664
DOI:10.1051/0004-6361/202143016
Page Range:A121
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:planetary systems, planets and satellites: atmospheres, planets and satellites: individual: MASCARA-1b, methods: observational, techniques: spectroscopic, Astrophysics - Earth and Planetary Astrophysics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - CHEOPS Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Smith, Dr Alexis M S
Deposited On:08 Sep 2022 11:56
Last Modified:08 Sep 2022 11:56

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