Wilson, Thomas G., Goffo, Elisa, Alibert, Yann ORCID: 0000-0002-4644-8818, Gandolfi, Davide ORCID: 0000-0001-8627-9628, Bonfanti, Andrea, Persson, Carina M., Cameron, Andrew Collier, Fridlund, Malcolm ORCID: 0000-0002-0855-8426, Fossati, Luca, Korth, Judith ORCID: 0000-0002-0076-6239, Benz, Willy, Deline, Adrien, Floren, Hans-Gustav, Guterman, Pascal, Adibekyan, Vardan ORCID: 0000-0002-0601-6199, Hooton, Matthew J., Hoyer, Sergio ORCID: 0000-0003-3477-2466, Leleu, Adrien ORCID: 0000-0003-2051-7974, Mustill, Alexander James ORCID: 0000-0002-2086-3642, Salmon, Sebastien, Sousa, Sergio G., Suarez, Olga, Abe, Lyu, Agabi, Abdelkrim, Alonso, Roi ORCID: 0000-0001-8462-8126, Anglada, Guillem, Asquier, Joel, Barczy, Tamas, Navascues, David Barrado, Barros, Susana C. C., Baumjohann, Wolfgang ORCID: 0000-0001-6271-0110, Beck, Mathias, Beck, Thomas, Billot, Nicolas, Bonfils, Xavier, Brandeker, Alexis, Broeg, Christopher, Bryant, Edward M., Burleigh, Matthew R., Buttu, Marco, Cabrera, Juan ORCID: 0000-0001-6653-5487, Charnoz, Sebastien, Ciardi, David R., Cloutier, Ryan, Cochran, William D., Collins, Karen A., Colon, Knicole D., Crouzet, Nicolas, Csizmadia, Szilard, Davies, Melvyn B., Deleuil, Magali, Delrez, Laetitia, Demangeon, Olivier, Demory, Brice-Olivier ORCID: 0000-0002-9355-5165, Dragomir, Diana, Dransfield, Georgina, Ehrenreich, David, Erikson, Anders, Fortier, Andrea, Gan, Tianjun ORCID: 0000-0002-4503-9705, Gill, Samuel, Gillon, Michael, Gnilka, Crystal L., Grieves, Nolan, Grziwa, Sascha, Gudel, Manuel, Guillot, Tristan, Haldemann, Jonas ORCID: 0000-0003-1231-2389, Heng, Kevin, Horne, Keith, Howell, Steve B., Isaak, Kate G., Jenkins, Jon M., Jensen, Eric L. N., Kiss, Laszlo, Lacedelli, Gaia, Lam, Kristine, Laskar, Jacques, Latham, David W., des Etangs, Alain Lecavelier, Lendl, Monika, Lester, Kathryn, V, Levine, Alan M., Livingston, John, Lovis, Christophe, Luque, Rafael, Magrin, Demetrio, Marie-Sainte, Wenceslas, Maxted, Pierre F. L., Mayo, Andrew W., McLean, Brian, Mecina, Marko ORCID: 0000-0002-3258-7526, Mekarnia, Djamel, Nascimbeni, Valerio ORCID: 0000-0001-9770-1214, Nielsen, Louise D., Olofsson, Goran, Osborn, Hugh P., Osborne, Hannah L. M., Ottensamer, Roland, Pagano, Isabella ORCID: 0000-0001-9573-4928, Palle, Enric, Peter, Gisbert, Piotto, Giampaolo, Pollacco, Don, Queloz, Didier ORCID: 0000-0002-3012-0316, Ragazzoni, Roberto, Rando, Nicola, Rauer, Heike, Redfield, Seth, Ribas, Ignasi, Ricker, George R., Rieder, Martin, Santos, Nuno C., Scandariato, Gaetano ORCID: 0000-0003-2029-0626, Schmider, Francois-Xavier, Schwarz, Richard P., Scott, Nicholas J., Seager, Sara, Segransan, Damien, Serrano, Luisa Maria, Simon, Attila E., Smith, Alexis M. S., Steller, Manfred, Stockdale, Chris, Szabo, Gyula, Thomas, Nicolas ORCID: 0000-0002-0146-0071, Ting, Eric B., Triaud, Amaury H. M. J., Udry, Stephane, Van Eylen, Vincent ORCID: 0000-0001-5542-8870, Van Grootel, Valerie, Vanderspek, Roland K., Viotto, Valentina ORCID: 0000-0001-5700-9565, Walton, Nicholas and Winn, Joshua N. (2022). A pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 characterized with CHEOPS. Mon. Not. Roy. Astron. Soc., 511 (1). S. 1043 - 1072. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

We report the discovery and characterization of a pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 (TIC 79748331), initially detected in the Transiting Exoplanet Survey Satellite (TESS) photometry. To characterize the system, we performed and retrieved the CHaracterising ExOPlanets Satellite (CHEOPS), TESS, and ground-based photometry, the High Accuracy Radial velocity Planet Searcher (HARPS) high-resolution spectroscopy, and Gemini speckle imaging. We characterize the host star and determine T-eff,T-* = 4734 +/- 67 K, R-* = 0.726 +/- 0.007 R-circle dot, and M-* = 0.748 +/- 0.032 M-circle dot. We present a novel detrending method based on point spread function shape-change modelling and demonstrate its suitability to correct flux variations in CHEOPS data. We confirm the planetary nature of both bodies and find that TOI-1064 b has an orbital period of P-b = 6.44387 +/- 0.00003 d, a radius of R-b = 2.59 +/- 0.04 R-circle plus, and a mass of M-b = 13.5(-1.8)(+1.7) M-circle plus, whilst TOI-1064 c has an orbital period of P-c = 12.22657(-0.00004)(+0.00005) d, a radius of R-c = 2.65 +/- 0.04 R-circle plus, and a 3 sigma upper mass limit of 8.5 M-circle plus. From the high-precision photometry we obtain radius uncertainties of similar to 1.6 per cent, allowing us to conduct internal structure and atmospheric escape modelling. TOI-1064 b is one of the densest, well-characterized sub-Neptunes, with a tenuous atmosphere that can be explained by the loss of a primordial envelope following migration through the protoplanetary disc. It is likely that TOI-1064 c has an extended atmosphere due to the tentative low density, however further radial velocities are needed to confirm this scenario and the similar radii, different masses nature of this system. The high-precision data and modelling of TOI-1064 b are important for planets in this region of mass-radius space, and it allow us to identify a trend in bulk density-stellar metallicity for massive sub-Neptunes that may hint at the formation of this population of planets.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Wilson, Thomas G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goffo, ElisaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alibert, YannUNSPECIFIEDorcid.org/0000-0002-4644-8818UNSPECIFIED
Gandolfi, DavideUNSPECIFIEDorcid.org/0000-0001-8627-9628UNSPECIFIED
Bonfanti, AndreaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Persson, Carina M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cameron, Andrew CollierUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fridlund, MalcolmUNSPECIFIEDorcid.org/0000-0002-0855-8426UNSPECIFIED
Fossati, LucaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korth, JudithUNSPECIFIEDorcid.org/0000-0002-0076-6239UNSPECIFIED
Benz, WillyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deline, AdrienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Floren, Hans-GustavUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guterman, PascalUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Adibekyan, VardanUNSPECIFIEDorcid.org/0000-0002-0601-6199UNSPECIFIED
Hooton, Matthew J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hoyer, SergioUNSPECIFIEDorcid.org/0000-0003-3477-2466UNSPECIFIED
Leleu, AdrienUNSPECIFIEDorcid.org/0000-0003-2051-7974UNSPECIFIED
Mustill, Alexander JamesUNSPECIFIEDorcid.org/0000-0002-2086-3642UNSPECIFIED
Salmon, SebastienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sousa, Sergio G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Suarez, OlgaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abe, LyuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Agabi, AbdelkrimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alonso, RoiUNSPECIFIEDorcid.org/0000-0001-8462-8126UNSPECIFIED
Anglada, GuillemUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Asquier, JoelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barczy, TamasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Navascues, David BarradoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barros, Susana C. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baumjohann, WolfgangUNSPECIFIEDorcid.org/0000-0001-6271-0110UNSPECIFIED
Beck, MathiasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beck, ThomasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Billot, NicolasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bonfils, XavierUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brandeker, AlexisUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Broeg, ChristopherUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bryant, Edward M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burleigh, Matthew R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Buttu, MarcoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cabrera, JuanUNSPECIFIEDorcid.org/0000-0001-6653-5487UNSPECIFIED
Charnoz, SebastienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ciardi, David R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cloutier, RyanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cochran, William D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Collins, Karen A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Colon, Knicole D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crouzet, NicolasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Csizmadia, SzilardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Davies, Melvyn B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deleuil, MagaliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delrez, LaetitiaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Demangeon, OlivierUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Demory, Brice-OlivierUNSPECIFIEDorcid.org/0000-0002-9355-5165UNSPECIFIED
Dragomir, DianaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dransfield, GeorginaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ehrenreich, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Erikson, AndersUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fortier, AndreaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gan, TianjunUNSPECIFIEDorcid.org/0000-0002-4503-9705UNSPECIFIED
Gill, SamuelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gillon, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gnilka, Crystal L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grieves, NolanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grziwa, SaschaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gudel, ManuelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guillot, TristanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Haldemann, JonasUNSPECIFIEDorcid.org/0000-0003-1231-2389UNSPECIFIED
Heng, KevinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Horne, KeithUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Howell, Steve B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isaak, Kate G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jenkins, Jon M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jensen, Eric L. N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kiss, LaszloUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lacedelli, GaiaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lam, KristineUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Laskar, JacquesUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Latham, David W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
des Etangs, Alain LecavelierUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lendl, MonikaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lester, Kathryn, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Levine, Alan M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Livingston, JohnUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lovis, ChristopheUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Luque, RafaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Magrin, DemetrioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marie-Sainte, WenceslasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maxted, Pierre F. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mayo, Andrew W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McLean, BrianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mecina, MarkoUNSPECIFIEDorcid.org/0000-0002-3258-7526UNSPECIFIED
Mekarnia, DjamelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nascimbeni, ValerioUNSPECIFIEDorcid.org/0000-0001-9770-1214UNSPECIFIED
Nielsen, Louise D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olofsson, GoranUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Osborn, Hugh P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Osborne, Hannah L. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ottensamer, RolandUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pagano, IsabellaUNSPECIFIEDorcid.org/0000-0001-9573-4928UNSPECIFIED
Palle, EnricUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Peter, GisbertUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Piotto, GiampaoloUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pollacco, DonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Queloz, DidierUNSPECIFIEDorcid.org/0000-0002-3012-0316UNSPECIFIED
Ragazzoni, RobertoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rando, NicolaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rauer, HeikeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Redfield, SethUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ribas, IgnasiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ricker, George R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rieder, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santos, Nuno C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scandariato, GaetanoUNSPECIFIEDorcid.org/0000-0003-2029-0626UNSPECIFIED
Schmider, Francois-XavierUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schwarz, Richard P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scott, Nicholas J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Seager, SaraUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Segransan, DamienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Serrano, Luisa MariaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simon, Attila E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, Alexis M. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Steller, ManfredUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stockdale, ChrisUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Szabo, GyulaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thomas, NicolasUNSPECIFIEDorcid.org/0000-0002-0146-0071UNSPECIFIED
Ting, Eric B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Triaud, Amaury H. M. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Udry, StephaneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Van Eylen, VincentUNSPECIFIEDorcid.org/0000-0001-5542-8870UNSPECIFIED
Van Grootel, ValerieUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vanderspek, Roland K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Viotto, ValentinaUNSPECIFIEDorcid.org/0000-0001-5700-9565UNSPECIFIED
Walton, NicholasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Winn, Joshua N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-699414
DOI: 10.1093/mnras/stab3799
Journal or Publication Title: Mon. Not. Roy. Astron. Soc.
Volume: 511
Number: 1
Page Range: S. 1043 - 1072
Date: 2022
Publisher: OXFORD UNIV PRESS
Place of Publication: OXFORD
ISSN: 1365-2966
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SUPER-EARTHS; TIMING OBSERVATIONS; EXTRASOLAR PLANETS; ERROR-CORRECTION; KEPLER PLANETS; RADIUS VALLEY; MINI-NEPTUNE; LIGHT CURVES; TESS OBJECTS; MASSMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69941

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