A Caltech Library Service

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

Barragán, O. and Armstrong, D. J. and Gandolfi, D. and Carleo, I. and Vidotto, A. A. and Villarreal D’Angelo, C. and Oklopčić, A. and Isaacson, H. and Oddo, D. and Collins, K. and Fridlund, M. and Sousa, S. G. and Persson, C. M. and Hellier, C. and Howell, S. and Howard, A. and Redfield, S. and Eisner, N. and Georgieva, I. Y. and Dragomir, D. and Bayliss, D. and Nielsen, L. D. and Klein, B. and Aigrain, S. and Zhang, M. and Teske, J. and Twicken, J. D. and Jenkins, J. and Esposito, M. and Van Eylen, V. and Rodler, F. and Adibekyan, V. and Alarcon, J. and Anderson, D. R. and Akana Murphy, J. M. and Barrado, D. and Barros, S. C. C. and Benneke, B. and Bouchy, F. and Bryant, E. M. and Butler, R. P. and Burt, J. and Cabrera, J. and Casewell, S. and Chaturvedi, P. and Cloutier, R. and Cochran, W. D. and Crane, J. and Crossfield, I. and Crouzet, N. and Collins, K. I. and Dai, F. and Deeg, H. J. and Deline, A. and Demangeon, O. D. S. and Dumusque, X. and Figueira, P. and Furlan, E. and Gnilka, C. and Goad, M. R. and Goffo, E. and Gutiérrez-Canales, F. and Hadjigeorghiou, A. and Hartman, Z. and Hatzes, A. P. and Harris, M. and Henderson, B. and Hirano, T. and Hojjatpanah, S. and Hoyer, S. and Kabáth, P. and Korth, J. and Lillo-Box, J. and Luque, R. and Marmier, M. and Močnik, T. and Muresan, A. and Murgas, F. and Nagel, E. and Osborne, H. L. M. and Osborn, A. and Osborn, H. P. and Palle, E. and Raimbault, M. and Ricker, G. R. and Rubenzahl, R. A. and Stockdale, C. and Santos, N. C. and Scott, N. and Schwarz, R. P. and Shectman, S. and Raimbault, M. and Seager, S. and Ségransan, D. and Serrano, L. M. and Skarka, M. and Smith, A. M. S. and Šubjak, J. and Tan, T. G. and Udry, S. and Watson, C. and Wheatley, P. J. and West, R. and Winn, J. N. and Wang, S. X. and Wolfgang, A. and Ziegler, C. (2022) The young HD 73583 (TOI-560) planetary system: two 10-M_⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf. Monthly Notices of the Royal Astronomical Society, 514 (2). pp. 1606-1627. ISSN 0035-8711. doi:10.1093/mnras/stac638.

[img] PDF - Published Version
Creative Commons Attribution.

[img] PDF - Accepted Version
See Usage Policy.

[img] Archive (ZIP) - Supplemental Material
Creative Commons Attribution.


Use this Persistent URL to link to this item:


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

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Barragán, O.0000-0003-0563-0493
Armstrong, D. J.0000-0002-5080-4117
Gandolfi, D.0000-0001-8627-9628
Vidotto, A. A.0000-0001-5371-2675
Oklopčić, A.0000-0002-9584-6476
Collins, K.0000-0001-6588-9574
Fridlund, M.0000-0002-0855-8426
Sousa, S. G.0000-0001-9047-2965
Persson, C. M.0000-0003-1257-5146
Hellier, C.0000-0002-3439-1439
Howell, S.0000-0002-2532-2853
Redfield, S.0000-0003-3786-3486
Eisner, N.0000-0002-9138-9028
Dragomir, D.0000-0003-2313-467X
Bayliss, D.0000-0001-6023-1335
Nielsen, L. D.0000-0002-5254-2499
Klein, B.0000-0003-0637-5236
Aigrain, S.0000-0003-1453-0574
Twicken, J. D.0000-0002-6778-7552
Jenkins, J.0000-0002-4715-9460
Esposito, M.0000-0002-6893-4534
Van Eylen, V.0000-0001-5542-8870
Anderson, D. R.0000-0001-7416-7522
Barros, S. C. C.0000-0003-2434-3625
Benneke, B.0000-0001-5578-1498
Bouchy, F.0000-0002-7613-393X
Bryant, E. M.0000-0001-7904-4441
Butler, R. P.0000-0003-1305-3761
Burt, J.0000-0002-0040-6815
Cabrera, J.0000-0001-6653-5487
Casewell, S.0000-0003-2478-0120
Chaturvedi, P.0000-0002-1887-1192
Cloutier, R.0000-0001-5383-9393
Cochran, W. D.0000-0001-9662-3496
Crane, J.0000-0002-5226-787X
Crossfield, I.0000-0002-1835-1891
Crouzet, N.0000-0001-7866-8738
Collins, K. I.0000-0003-2781-3207
Deeg, H. J.0000-0003-0047-4241
Demangeon, O. D. S.0000-0001-7918-0355
Figueira, P.0000-0001-8504-283X
Furlan, E.0000-0001-9800-6248
Gnilka, C.0000-0003-2519-6161
Goad, M. R.0000-0002-2908-7360
Goffo, E.0000-0001-9670-961X
Hirano, T.0000-0003-3618-7535
Hoyer, S.0000-0003-3477-2466
Kabáth, P.0000-0002-1623-5352
Korth, J.0000-0002-0076-6239
Lillo-Box, J.0000-0003-3742-1987
Luque, R.0000-0002-4671-2957
Murgas, F.0000-0001-9087-1245
Osborne, H. L. M.0000-0002-4143-4767
Osborn, A.0000-0002-5899-7750
Osborn, H. P.0000-0002-4047-4724
Palle, E.0000-0003-0987-1593
Ricker, G. R.0000-0003-2058-6662
Rubenzahl, R. A.0000-0003-3856-3143
Santos, N. C.0000-0003-4422-2919
Schwarz, R. P.0000-0001-8227-1020
Seager, S.0000-0002-6892-6948
Serrano, L. M.0000-0001-9211-3691
Skarka, M.0000-0002-7602-0046
Smith, A. M. S.0000-0002-2386-4341
Šubjak, J.0000-0002-5313-9722
Udry, S.0000-0001-7576-6236
Wheatley, P. J.0000-0003-1452-2240
Winn, J. N.0000-0002-4265-047X
Ziegler, C.0000-0002-0619-7639
Additional Information:© The Author(s) 2022. Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. Received: 22 October 2021. Revision received: 03 March 2022. Accepted: 05 March 2022. Published: 15 March 2022. This work was supported by the KESPRINT collaboration, an international consortium devoted to the characterization and research of exoplanets discovered with space-based missions ( We thank the referee for their helpful comments and suggestions that improved the quality of this manuscript. We acknowledge the use of public TESS 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. This work uses observations from the LCOGT network. Part of the LCOGT telescope time was granted by NOIRLab through the Mid-Scale Innovations Program (MSIP). MSIP is funded by NSF. This paper is in part based on data collected under the NGTS project at the ESO La Silla Paranal Observatory. The NGTS facility is operated by the consortium institutes with support from the UK Science and Technology Facilities Council (STFC) projects ST/M001962/1 and ST/S002642/1. This research has used the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Some of the observations in the paper used the High-Resolution Imaging instrument Zorro obtained under Gemini LLP Proposal Number: GN/S-2021A-LP-105. Zorro was funded by the NASA Exoplanet Exploration Program and built at the NASA Ames Research Center by Steve B. Howell, Nic Scott, Elliott P. Horch, and Emmett Quigley. Zorro was mounted on the Gemini North (and/or South) telescope of the international Gemini Observatory, a program of NSF’s OIR Lab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation on behalf of the Gemini partnership: the National Science Foundation (United States), National Research Council (Canada), Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Ciencia, Tecnología e Innovación (Argentina), Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brazil), and Korea Astronomy and Space Science Institute (Republic of Korea). OB, BK, and SA acknowledge that this publication is part of a project that has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant agreement No. 865624). DG and LMS gratefully acknowledge financial support from the Cassa di Risparmio di Torino foundation under Grant No. 2018.2323 ‘Gaseous or rocky? Unveiling the nature of small worlds’. DJA acknowledges support from the STFC via an Ernest Rutherford Fellowship (ST/R00384X/1). APH and ME acknowledges grant HA 3279/12-1 within the DFG Schwerpunkt SPP 1992, ‘Exploring the Diversity of Extrasolar Planets’. JS and PK would like to acknowledge support from MSMT grant LTT-20015. We acknowledges the support by FCT – Fundação para a Ciência e a Tecnologia through national funds and by FEDER through COMPETE2020 – Programa Operacional Competitividade e Internacionalização by these grants: UID/FIS/04434/2019; UIDB/04434/2020; UIDP/04434/2020; PTDC/FIS-AST/32113/2017 & POCI-01-0145-FEDER-032113; PTDC/FISAST /28953/2017 & POCI-01-0145-FEDER-028953. AD acknowledges the financial support of the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (project FOUR ACES; grant agreement No 724427). AD also acknowledges financial support of the the Swiss National Science Foundation (SNSF) through the National Centre for Competence in Research ‘PlanetS’. MF, IYG, JK, and CMP gratefully acknowledge the support of the Swedish National Space Agency (DNR 177/19, 174/18, 2020-00104, 65/19). FGC thanks the Mexican national council for science and technology (CONACYT, CVU-1005374). MS acknowledge financial support of the Inter-transfer grant no LTT-20015. JL-B acknowledges financial support received from ‘la Caixa’ Foundation (ID 100010434) and from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 847648, with fellowship code LCF/BQ/PI20/11760023. AAV acknowledges funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 817540, ASTROFLOW). JMAM is supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE-1842400. JMAM acknowledges the LSSTC Data Science Fellowship Program, which is funded by LSSTC, NSF Cybertraining Grant No. 1829740, the Brinson Foundation, and the Moore Foundation; his participation in the program has benefited this work. RAR is supported by the NSF Graduate Research Fellowship, grant No. DGE 1745301. RL acknowledges financial support from the Spanish Ministerio de Ciencia e Innovación, through project PID2019-109522GB-C52, and the Centre of Excellence ‘Severo Ochoa’ award to the Instituto de Astrofísica de Andalucía (SEV-2017-0709). PC acknowledges the generous support from Deutsche Forschungsgemeinschaft (DFG) of the grant CH 2636/1-1. SH acknowledges CNES funding through the grant 837319. VA acknowledges the support from Fundação para a Ciência e Tecnologia (FCT) through Investigador FCT contract nr. IF/00650/2015/CP1273/CT0001. ODSD is supported in the form of work contract (DL 57/2016/CP1364/CT0004) funded by national funds through Fundação para a Ciência e Tecnologia (FCT). AO is supported by an STFC studentship. XD would like to acknowledge the funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement SCORE No 851555). HJD acknowledges support from the Spanish Research Agency of the Ministry of Science and Innovation (AEI-MICINN) under the grant ‘Contribution of the IAC to the PLATO Space Mission’ with reference PID2019-107061GB-C66, DOI: 10.13039/501100011033. DD acknowledges support from the TESS Guest Investigator Program grant 80NSSC19K1727 and NASA Exoplanet Research Program grant 18-2XRP18_2-0136. AO gratefully acknowledges support from the Dutch Research Council NWO Veni grant. DATA AVAILABILITY. Some of the codes used in this manuscript are available as online supplementary material accessible following the links provided in the online version. Our spectroscopic measurements are available as a supplementary material in the online version of this manuscript.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Science and Technology Facilities Council (STFC)ST/M001962/1
Science and Technology Facilities Council (STFC)ST/S002642/1
Gemini PartnershipUNSPECIFIED
European Research Council (ERC)865624
CRT Foundation2018.2323
Science and Technology Facilities Council (STFC)ST/R00384X/1
Deutsche Forschungsgemeinschaft (DFG)HA 3279/12-1
Ministry of Education, Youth and Sports (Czech Republic)LTT-20015
Fundação para a Ciência e a Tecnologia (FCT)UID/FIS/04434/2019
Fundação para a Ciência e a Tecnologia (FCT)UIDB/04434/2020
Fundação para a Ciência e a Tecnologia (FCT)UIDP/04434/2020
Fundação para a Ciência e a Tecnologia (FCT)PTDC/FIS-AST/32113/2017
Fundação para a Ciência e a Tecnologia (FCT)POCI-01-0145-FEDER-032113
Fundação para a Ciência e a Tecnologia (FCT)PTDC/FISAST/28953/2017
Fundação para a Ciência e a Tecnologia (FCT)POCI-01-0145-FEDER-028953
European Regional Development FundUNSPECIFIED
European Research Council (ERC)724427
Swiss National Science Foundation (SNSF)UNSPECIFIED
Swedish National Space Agency177/19
Swedish National Space Agency174/18
Swedish National Space Agency2020-00104
Swedish National Space Agency65/19
Consejo Nacional de Ciencia y Tecnología (CONACYT)CVU-1005374
La Caixa Foundation100010434
Marie Curie Fellowship847648
Marie Curie FellowshipLCF/BQ/PI20/11760023
European Research Council (ERC)817540
NSF Graduate Research FellowshipDGE-1842400
Large Synoptic Survey Telescope CorporationUNSPECIFIED
Brinson FoundationUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
NSF Graduate Research FellowshipDGE-1745301
Ministerio de Ciencia e Innovación (MICINN)PID2019-109522GB-C52
Severo OchoaSEV-2017-0709
Deutsche Forschungsgemeinschaft (DFG)CH 2636/1-1
Centre National d'Études Spatiales (CNES)837319
Fundação para a Ciência e a Tecnologia (FCT)IF/00650/2015/CP1273/CT0001
Fundação para a Ciência e a Tecnologia (FCT)DL 57/2016/CP1364/CT0004
European Research Council (ERC)851555
Ministerio de Ciencia e Innovación (MICINN)PID2019-107061GB-C66
NASA18-2XRP18 2-0136
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Subject Keywords:techniques: photometric, techniques: radial velocities, planets and satellites: individual: HD 73583 (TOI-560), stars: activity
Issue or Number:2
Record Number:CaltechAUTHORS:20220802-743306000
Persistent URL:
Official Citation:O Barragán, D J Armstrong, D Gandolfi, I Carleo, A A Vidotto, C Villarreal D’Angelo, A Oklopčić, H Isaacson, D Oddo, K Collins, M Fridlund, S G Sousa, C M Persson, C Hellier, S Howell, A Howard, S Redfield, N Eisner, I Y Georgieva, D Dragomir, D Bayliss, L D Nielsen, B Klein, S Aigrain, M Zhang, J Teske, J D Twicken, J Jenkins, M Esposito, V Van Eylen, F Rodler, V Adibekyan, J Alarcon, D R Anderson, J M Akana Murphy, D Barrado, S C C Barros, B Benneke, F Bouchy, E M Bryant, R P Butler, J Burt, J Cabrera, S Casewell, P Chaturvedi, R Cloutier, W D Cochran, J Crane, I Crossfield, N Crouzet, K I Collins, F Dai, H J Deeg, A Deline, O D S Demangeon, X Dumusque, P Figueira, E Furlan, C Gnilka, M R Goad, E Goffo, F Gutiérrez-Canales, A Hadjigeorghiou, Z Hartman, A P Hatzes, M Harris, B Henderson, T Hirano, S Hojjatpanah, S Hoyer, P Kabáth, J Korth, J Lillo-Box, R Luque, M Marmier, T Močnik, A Muresan, F Murgas, E Nagel, H L M Osborne, A Osborn, H P Osborn, E Palle, M Raimbault, G R Ricker, R A Rubenzahl, C Stockdale, N C Santos, N Scott, R P Schwarz, S Shectman, M Raimbault, S Seager, D Ségransan, L M Serrano, M Skarka, A M S Smith, J Šubjak, T G Tan, S Udry, C Watson, P J Wheatley, R West, J N Winn, S X Wang, A Wolfgang, C Ziegler, The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf, Monthly Notices of the Royal Astronomical Society, Volume 514, Issue 2, August 2022, Pages 1606–1627,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:116021
Deposited By: George Porter
Deposited On:02 Aug 2022 20:27
Last Modified:02 Aug 2022 20:30

Repository Staff Only: item control page