Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS
Abstract
ABSTRACT We present a precise characterization of the TOI-561 planetary system obtained by combining previously published data with TESS and CHEOPS photometry, and a new set of 62 HARPS-N radial velocities (RVs). Our joint analysis confirms the presence of four transiting planets, namely TOI-561 b (P = 0.45 d, R = 1.42 R⊕, M = 2.0 M⊕), c (P = 10.78 d, R = 2.91 R⊕, M = 5.4 M⊕), d (P = 25.7 d, R = 2.82 R⊕, M = 13.2 M⊕), and e (P = 77 d, R = 2.55 R⊕, M = 12.6 R⊕). Moreover, we identify an additional, long-period signal (>450 d) in the RVs, which could be due to either an external planetary companion or to stellar magnetic activity. The precise masses and radii obtained for the four planets allowed us to conduct interior structure and atmospheric escape modelling. TOI-561 b is confirmed to be the lowest density (ρb = 3.8 ± 0.5 g cm−3) ultra-short period (USP) planet known to date, and the low metallicity of the host star makes it consistent with the general bulk density-stellar metallicity trend. According to our interior structure modelling, planet b has basically no gas envelope, and it could host a certain amount of water. In contrast, TOI-561 c, d, and e likely retainedmore »
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- Publication Date:
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE), Nuclear Fuel Cycle and Supply Chain
- OSTI Identifier:
- 1846680
- Grant/Contract Number:
- A40TAC_23; CEECIND/00826/2018; POPH/FSE (EC); IF/01312/2014/CP1215/CT0004; IF/00650/2015/CP1273/CT0001; DL 57/2016/CP1364/CT0004
- Resource Type:
- Published Article
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 511 Journal Issue: 3; Journal ID: ISSN 0035-8711
- Publisher:
- Oxford University Press
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Lacedelli, G., Wilson, T. G., Malavolta, L., Hooton, M. J., Collier Cameron, A., Alibert, Y., Mortier, A., Bonfanti, A., Haywood, R. D., Hoyer, S., Piotto, G., Bekkelien, A., Vanderburg, A. M., Benz, W., Dumusque, X., Deline, A., López-Morales, M., Borsato, L., Rice, K., Fossati, L., Latham, D. W., Brandeker, A., Poretti, E., Sousa, S. G., Sozzetti, A., Salmon, S., Burke, C. J., Van Grootel, V., Fausnaugh, M. M., Adibekyan, V., Huang, C. X., Osborn, H. P., Mustill, A. J., Pallé, E., Bourrier, V., Nascimbeni, V., Alonso, R., Anglada, G., Bárczy, T., Barrado y Navascues, D., Barros, S. C. C., Baumjohann, W., Beck, M., Beck, T., Billot, N., Bonfils, X., Broeg, C., Buchhave, L. A., Cabrera, J., Charnoz, S., Cosentino, R., Csizmadia, Sz, Davies, M. B., Deleuil, M., Delrez, L., Demangeon, O., Demory, B. -O, Ehrenreich, D., Erikson, A., Esparza-Borges, E., Florén, H. G., Fortier, A., Fridlund, M., Futyan, D., Gandolfi, D., Ghedina, A., Gillon, M., Güdel, M., Guterman, P., Harutyunyan, A., Heng, K., Isaak, K. G., Jenkins, J. M., Kiss, L., Laskar, J., Lecavelier des Etangs, A., Lendl, M., Lovis, C., Magrin, D., Marafatto, L., Martinez Fiorenzano, A. F., Maxted, P. F. L., Mayor, M., Micela, G., Molinari, E., Murgas, F., Narita, N., Olofsson, G., Ottensamer, R., Pagano, I., Pasetti, A., Pedani, M., Pepe, F. A., Peter, G., Phillips, D. F., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Ratti, F., Rauer, H., Ribas, I., Santos, N. C., Sasselov, D., Scandariato, G., Seager, S., Ségransan, D., Serrano, L. M., Simon, A. E., Smith, A. M. S., Steinberger, M., Steller, M., Szabó, Gy, Thomas, N., Twicken, J. D., Udry, S., Walton, N., and Winn, J. N. Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS. United Kingdom: N. p., 2022.
Web. doi:10.1093/mnras/stac199.
Lacedelli, G., Wilson, T. G., Malavolta, L., Hooton, M. J., Collier Cameron, A., Alibert, Y., Mortier, A., Bonfanti, A., Haywood, R. D., Hoyer, S., Piotto, G., Bekkelien, A., Vanderburg, A. M., Benz, W., Dumusque, X., Deline, A., López-Morales, M., Borsato, L., Rice, K., Fossati, L., Latham, D. W., Brandeker, A., Poretti, E., Sousa, S. G., Sozzetti, A., Salmon, S., Burke, C. J., Van Grootel, V., Fausnaugh, M. M., Adibekyan, V., Huang, C. X., Osborn, H. P., Mustill, A. J., Pallé, E., Bourrier, V., Nascimbeni, V., Alonso, R., Anglada, G., Bárczy, T., Barrado y Navascues, D., Barros, S. C. C., Baumjohann, W., Beck, M., Beck, T., Billot, N., Bonfils, X., Broeg, C., Buchhave, L. A., Cabrera, J., Charnoz, S., Cosentino, R., Csizmadia, Sz, Davies, M. B., Deleuil, M., Delrez, L., Demangeon, O., Demory, B. -O, Ehrenreich, D., Erikson, A., Esparza-Borges, E., Florén, H. G., Fortier, A., Fridlund, M., Futyan, D., Gandolfi, D., Ghedina, A., Gillon, M., Güdel, M., Guterman, P., Harutyunyan, A., Heng, K., Isaak, K. G., Jenkins, J. M., Kiss, L., Laskar, J., Lecavelier des Etangs, A., Lendl, M., Lovis, C., Magrin, D., Marafatto, L., Martinez Fiorenzano, A. F., Maxted, P. F. L., Mayor, M., Micela, G., Molinari, E., Murgas, F., Narita, N., Olofsson, G., Ottensamer, R., Pagano, I., Pasetti, A., Pedani, M., Pepe, F. A., Peter, G., Phillips, D. F., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Ratti, F., Rauer, H., Ribas, I., Santos, N. C., Sasselov, D., Scandariato, G., Seager, S., Ségransan, D., Serrano, L. M., Simon, A. E., Smith, A. M. S., Steinberger, M., Steller, M., Szabó, Gy, Thomas, N., Twicken, J. D., Udry, S., Walton, N., & Winn, J. N. Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS. United Kingdom. https://doi.org/10.1093/mnras/stac199
Lacedelli, G., Wilson, T. G., Malavolta, L., Hooton, M. J., Collier Cameron, A., Alibert, Y., Mortier, A., Bonfanti, A., Haywood, R. D., Hoyer, S., Piotto, G., Bekkelien, A., Vanderburg, A. M., Benz, W., Dumusque, X., Deline, A., López-Morales, M., Borsato, L., Rice, K., Fossati, L., Latham, D. W., Brandeker, A., Poretti, E., Sousa, S. G., Sozzetti, A., Salmon, S., Burke, C. J., Van Grootel, V., Fausnaugh, M. M., Adibekyan, V., Huang, C. X., Osborn, H. P., Mustill, A. J., Pallé, E., Bourrier, V., Nascimbeni, V., Alonso, R., Anglada, G., Bárczy, T., Barrado y Navascues, D., Barros, S. C. C., Baumjohann, W., Beck, M., Beck, T., Billot, N., Bonfils, X., Broeg, C., Buchhave, L. A., Cabrera, J., Charnoz, S., Cosentino, R., Csizmadia, Sz, Davies, M. B., Deleuil, M., Delrez, L., Demangeon, O., Demory, B. -O, Ehrenreich, D., Erikson, A., Esparza-Borges, E., Florén, H. G., Fortier, A., Fridlund, M., Futyan, D., Gandolfi, D., Ghedina, A., Gillon, M., Güdel, M., Guterman, P., Harutyunyan, A., Heng, K., Isaak, K. G., Jenkins, J. M., Kiss, L., Laskar, J., Lecavelier des Etangs, A., Lendl, M., Lovis, C., Magrin, D., Marafatto, L., Martinez Fiorenzano, A. F., Maxted, P. F. L., Mayor, M., Micela, G., Molinari, E., Murgas, F., Narita, N., Olofsson, G., Ottensamer, R., Pagano, I., Pasetti, A., Pedani, M., Pepe, F. A., Peter, G., Phillips, D. F., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Ratti, F., Rauer, H., Ribas, I., Santos, N. C., Sasselov, D., Scandariato, G., Seager, S., Ségransan, D., Serrano, L. M., Simon, A. E., Smith, A. M. S., Steinberger, M., Steller, M., Szabó, Gy, Thomas, N., Twicken, J. D., Udry, S., Walton, N., and Winn, J. N. Fri .
"Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS". United Kingdom. https://doi.org/10.1093/mnras/stac199.
@article{osti_1846680,
title = {Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS},
author = {Lacedelli, G. and Wilson, T. G. and Malavolta, L. and Hooton, M. J. and Collier Cameron, A. and Alibert, Y. and Mortier, A. and Bonfanti, A. and Haywood, R. D. and Hoyer, S. and Piotto, G. and Bekkelien, A. and Vanderburg, A. M. and Benz, W. and Dumusque, X. and Deline, A. and López-Morales, M. and Borsato, L. and Rice, K. and Fossati, L. and Latham, D. W. and Brandeker, A. and Poretti, E. and Sousa, S. G. and Sozzetti, A. and Salmon, S. and Burke, C. J. and Van Grootel, V. and Fausnaugh, M. M. and Adibekyan, V. and Huang, C. X. and Osborn, H. P. and Mustill, A. J. and Pallé, E. and Bourrier, V. and Nascimbeni, V. and Alonso, R. and Anglada, G. and Bárczy, T. and Barrado y Navascues, D. and Barros, S. C. C. and Baumjohann, W. and Beck, M. and Beck, T. and Billot, N. and Bonfils, X. and Broeg, C. and Buchhave, L. A. and Cabrera, J. and Charnoz, S. and Cosentino, R. and Csizmadia, Sz and Davies, M. B. and Deleuil, M. and Delrez, L. and Demangeon, O. and Demory, B. -O and Ehrenreich, D. and Erikson, A. and Esparza-Borges, E. and Florén, H. G. and Fortier, A. and Fridlund, M. and Futyan, D. and Gandolfi, D. and Ghedina, A. and Gillon, M. and Güdel, M. and Guterman, P. and Harutyunyan, A. and Heng, K. and Isaak, K. G. and Jenkins, J. M. and Kiss, L. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M. and Lovis, C. and Magrin, D. and Marafatto, L. and Martinez Fiorenzano, A. F. and Maxted, P. F. L. and Mayor, M. and Micela, G. and Molinari, E. and Murgas, F. and Narita, N. and Olofsson, G. and Ottensamer, R. and Pagano, I. and Pasetti, A. and Pedani, M. and Pepe, F. A. and Peter, G. and Phillips, D. F. and Pollacco, D. and Queloz, D. and Ragazzoni, R. and Rando, N. and Ratti, F. and Rauer, H. and Ribas, I. and Santos, N. C. and Sasselov, D. and Scandariato, G. and Seager, S. and Ségransan, D. and Serrano, L. M. and Simon, A. E. and Smith, A. M. S. and Steinberger, M. and Steller, M. and Szabó, Gy and Thomas, N. and Twicken, J. D. and Udry, S. and Walton, N. and Winn, J. N.},
abstractNote = {ABSTRACT We present a precise characterization of the TOI-561 planetary system obtained by combining previously published data with TESS and CHEOPS photometry, and a new set of 62 HARPS-N radial velocities (RVs). Our joint analysis confirms the presence of four transiting planets, namely TOI-561 b (P = 0.45 d, R = 1.42 R⊕, M = 2.0 M⊕), c (P = 10.78 d, R = 2.91 R⊕, M = 5.4 M⊕), d (P = 25.7 d, R = 2.82 R⊕, M = 13.2 M⊕), and e (P = 77 d, R = 2.55 R⊕, M = 12.6 R⊕). Moreover, we identify an additional, long-period signal (>450 d) in the RVs, which could be due to either an external planetary companion or to stellar magnetic activity. The precise masses and radii obtained for the four planets allowed us to conduct interior structure and atmospheric escape modelling. TOI-561 b is confirmed to be the lowest density (ρb = 3.8 ± 0.5 g cm−3) ultra-short period (USP) planet known to date, and the low metallicity of the host star makes it consistent with the general bulk density-stellar metallicity trend. According to our interior structure modelling, planet b has basically no gas envelope, and it could host a certain amount of water. In contrast, TOI-561 c, d, and e likely retained an H/He envelope, in addition to a possibly large water layer. The inferred planetary compositions suggest different atmospheric evolutionary paths, with planets b and c having experienced significant gas loss, and planets d and e showing an atmospheric content consistent with the original one. The uniqueness of the USP planet, the presence of the long-period planet TOI-561 e, and the complex architecture make this system an appealing target for follow-up studies.},
doi = {10.1093/mnras/stac199},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 511,
place = {United Kingdom},
year = {Fri Jan 28 00:00:00 EST 2022},
month = {Fri Jan 28 00:00:00 EST 2022}
}
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