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The ODYSSEUS Survey. Motivation and First Results: Accretion, Ejection, and Disk Irradiation of CVSO 109

Espaillat, C. C. and Herczeg, G. J. and Thanathibodee, T. and Pittman, C. and Calvet, N. and Arulanantham, N. and France, K. and Serna, Javier and Hernández, J. and Kóspál, Á. and Walter, F. M. and Frasca, A. and Fischer, W. J. and Johns-Krull, C. M. and Schneider, P. C. and Robinson, C. and Edwards, Suzan and Ábrahám, P. and Fang, Min and Erkal, J. and Manara, C. F. and Alcalá, J. M. and Alecian, E. and Alexander, R. D. and Alonso-Santiago, J. and Antoniucci, Simone and Ardila, David R. and Banzatti, Andrea and Benisty, M. and Bergin, Edwin A. and Biazzo, Katia and Briceño, César and Campbell-White, Justyn and Cleeves, L. Ilsedore and Coffey, Deirdre and Eislöffel, Jochen and Facchini, Stefano and Fedele, D. and Fiorellino, Eleonora and Froebrich, Dirk and Gangi, Manuele and Giannini, Teresa and Grankin, K. and Günther, Hans Moritz and Guo, Zhen and Hartmann, Lee and Hillenbrand, Lynne A. and Hinton, P. C. and Kastner, Joel H. and Koen, Chris and Maucó, K. and Mendigutia, I. and Nisini, B. and Panwar, Neelam and Principe, D. A. and Robberto, Massimo and Sicilia-Aguilar, A. and Valenti, Jeff A. and Wendeborn, J. and Williams, Jonathan P. and Xu, Ziyan and Yadav, R. K. (2022) The ODYSSEUS Survey. Motivation and First Results: Accretion, Ejection, and Disk Irradiation of CVSO 109. Astronomical Journal, 163 (3). Art. No. 114. ISSN 1538-3881. doi:10.3847/1538-3881/ac479d.

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The Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Director's Discretionary Program of low-mass pre-main-sequence stars, coupled with forthcoming data from Atacama Large Millimeter/submillimeter Array and James Webb Space Telescope, will provide the foundation to revolutionize our understanding of the relationship between young stars and their protoplanetary disks. A comprehensive evaluation of the physics of disk evolution and planet formation requires understanding the intricate relationships between mass accretion, mass outflow, and disk structure. Here we describe the Outflows and Disks around Young Stars: Synergies for the Exploration of ULLYSES Spectra (ODYSSEUS) Survey and present initial results of the classical T Tauri Star CVSO 109 in Orion OB1b as a demonstration of the science that will result from the survey. ODYSSEUS will analyze the ULLYSES spectral database, ensuring a uniform and systematic approach in order to (1) measure how the accretion flow depends on the accretion rate and magnetic structures, (2) determine where winds and jets are launched and how mass-loss rates compare with accretion, and (3) establish the influence of FUV radiation on the chemistry of the warm inner regions of planet-forming disks. ODYSSEUS will also acquire and provide contemporaneous observations at X-ray, optical, near-IR, and millimeter wavelengths to enhance the impact of the ULLYSES data. Our goal is to provide a consistent framework to accurately measure the level and evolution of mass accretion in protoplanetary disks, the properties and magnitudes of inner-disk mass loss, and the influence of UV radiation fields that determine ionization levels and drive disk chemistry.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper ItemODYSSEUS team
Espaillat, C. C.0000-0001-9227-5949
Herczeg, G. J.0000-0002-7154-6065
Thanathibodee, T.0000-0003-4507-1710
Calvet, N.0000-0002-3950-5386
Arulanantham, N.0000-0003-2631-5265
France, K.0000-0002-1002-3674
Serna, Javier0000-0001-7351-6540
Hernández, J.0000-0001-9797-5661
Kóspál, Á.0000-0001-7157-6275
Frasca, A.0000-0002-0474-0896
Fischer, W. J.0000-0002-3747-2496
Johns-Krull, C. M.0000-0002-8828-6386
Schneider, P. C.0000-0002-5094-2245
Edwards, Suzan0000-0002-3232-665X
Ábrahám, P.0000-0001-6015-646X
Fang, Min0000-0001-8060-1321
Erkal, J.0000-0002-8476-1389
Manara, C. F.0000-0003-3562-262X
Alcalá, J. M.0000-0001-8657-095X
Alecian, E.0000-0001-5260-7179
Alexander, R. D.0000-0001-6410-2899
Antoniucci, Simone0000-0002-0666-3847
Ardila, David R.0000-0002-2564-8116
Banzatti, Andrea0000-0003-4335-0900
Benisty, M.0000-0002-7695-7605
Bergin, Edwin A.0000-0003-4179-6394
Biazzo, Katia0000-0002-1892-2180
Briceño, César0000-0001-7124-4094
Campbell-White, Justyn0000-0002-3913-3746
Cleeves, L. Ilsedore0000-0003-2076-8001
Coffey, Deirdre0000-0002-2210-202X
Eislöffel, Jochen0000-0001-6496-0252
Facchini, Stefano0000-0003-4689-2684
Fedele, D.0000-0001-6156-0034
Fiorellino, Eleonora0000-0002-5261-6216
Froebrich, Dirk0000-0003-4734-3345
Gangi, Manuele0000-0002-8364-7795
Giannini, Teresa0000-0002-7035-8513
Grankin, K.0000-0001-5707-8448
Günther, Hans Moritz0000-0003-4243-2840
Guo, Zhen0000-0003-0292-4832
Hartmann, Lee0000-0003-1430-8519
Hinton, P. C.0000-0001-9504-0520
Kastner, Joel H.0000-0002-3138-8250
Koen, Chris0000-0003-2291-2660
Maucó, K.0000-0001-8284-4343
Mendigutia, I.0000-0002-0233-5328
Nisini, B.0000-0002-9190-0113
Panwar, Neelam0000-0002-0151-2361
Principe, D. A.0000-0002-7939-377X
Robberto, Massimo0000-0002-9573-3199
Sicilia-Aguilar, A.0000-0002-8421-0851
Valenti, Jeff A.0000-0003-3305-6281
Wendeborn, J.0000-0002-6808-4066
Williams, Jonathan P.0000-0001-5058-695X
Xu, Ziyan0000-0002-2986-8466
Yadav, R. K.0000-0002-9569-2438
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 August 25; revised 2021 December 15; accepted 2021 December 26; published 2022 February 7. While the AAS journals adhere to and respect UN resolutions regarding the designations of territories (available at, it is our policy to use the affiliations provided by our authors on published articles. This work was supported by HST AR-16129 and benefited from discussions with the ODYSSEUS team ( Based on observations obtained with the NASA/ESA Hubble Space Telescope, retrieved from the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science Institute (STScI). STScI is operated by the Association of Universities for Research in Astronomy Inc. under NASA contract NAS 5-26555. Based on observations collected at the European Southern Observatory under ESO program 106.20Z8. We acknowledge financial support from the project PRIN-INAF 2019 "Spectroscopically Tracing the Disk Dispersal Evolution (STRADE)." G.J.H. is supported by National Key R&D Program of China No. 2019YFA0405100 and by National Science Foundation of China general grant 11773002. J.H. and J.S. acknowledge support from the National Research Council of México (CONACyT) project No. 86372 and the PAPIIT-UNAM project IA102921. F.M.W. acknowledges support through NSF grant 1611443. J.C.W. and A.S.A. are supported by the STFC grant No. ST/S000399/1. Observing time with SMARTS/CHIRON is made possible by a research support grant from Stony Brook University. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program under grant agreement Nos. 716155 (SACCRED) and 681601 (BuildingPlanS). This paper utilizes the D'Alessio irradiated accretion disk (DIAD) code. We wish to recognize the work of Paola D'Alessio, who passed away in 2013. Her legacy and pioneering work live on through her substantial contributions to the field. We thank Hodari-Sadiki James, Leonardo Paredes, and Todd Henry for managing the CHIRON spectrograph and for their prompt scheduling of the requested observations. Time on the AAVSOnet is awarded competitively; we acknowledge the contributions of AAVSO to supporting variable star science and thank Ken Menzies for coordinating and scheduling the observations. We thank the referee for a constructive review.
Group:Astronomy Department
Funding AgencyGrant Number
NASANAS 5-26555
Istituto Nazionale di Astrofisica (INAF)PRIN-INAF 2019
National Key Research and Development Program of China2019YFA0405100
National Natural Science Foundation of China11773002
Consejo Nacional de Ciencia y Tecnología (CONACYT)86372
Universidad Nacional Autónoma de México (UNAM)IA102921
Science and Technology Facilities Council (STFC)ST/S000399/1
Stony Brook UniversityUNSPECIFIED
European Research Council (ERC)716155
European Research Council (ERC)681601
Subject Keywords:accretion disks; stars: circumstellar matter; planetary systems: protoplanetary disks; stars: formation; stars: pre-main-sequence
Issue or Number:3
Classification Code:Unified Astronomy Thesaurus concepts: accretion disks (1579); stars: circumstellar matter (241); planetary systems: protoplanetary disks (1300); stars: formation (1569); stars: pre-main-sequence (1289)
Record Number:CaltechAUTHORS:20220119-234017458
Persistent URL:
Official Citation:C. C. Espaillat et al 2022 AJ 163 114
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113014
Deposited By: George Porter
Deposited On:20 Jan 2022 16:53
Last Modified:09 Feb 2022 20:52

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