Antonija Oklopčić

Assistant professor

Anton Pannekoek Institute for Astronomy

University of Amsterdam

See my CV



  • Assistant professor (since 2020)
    University of Amsterdam, Anton Pannekoek Institute for Astronomy
  • Postdoctoral fellow (2017 - 2020)
    Harvard University, Center for Astrophysics | Harvard & Smithsonian
  • Education:

  • PhD in Astrophysics, 2017
    California Institute of Technology
  • MSc in Physics, 2011
    University of Zagreb
  • Fellowships and Awards:

  • NWO Veni (2021 - 2024)
  • MaGillavry Fellowship (2020)
  • NASA Hubble Fellowship Program (NHFP) Sagan Fellowship (2019 - 2020)
  • Institute for Theory and Computation (ITC) Fellowship (2017 - 2019)
  • Fulbright International Science and Technology Fellowship (2011 - 2014)
  • Research mentoring:

  • PhD candidates, UvA:
    Dion Linssen (since 2020), Fabienne Nail (since 2021)
  • MSc thesis projects, UvA:
    Krishna Kanumalla (2021-22), Leoni Janssen (2022-23), Jim Shih (2022-23)
  • BSc thesis projects, UvA:
    Thijmen Cornelis (2021), Elise Koo (2021), Jip Matthijsse (2021), Florian Tiggeloven (2021), Gwan Yu Tjiook (2022)
  • Summer internships, Center for Astrophysics | Harvard & Smithsonian:
    Caleb Harada (2019), Dakotah Tyler (2019)
  • Research for course credit, Harvard University:
    Shelly Tsirulik (2019)
  • Teaching:

  • Planet Formation and Exoplanets
    course coordinator and lecturer / MSc / UvA / since 2021-22
  • Modern Astronomy
    lecturer / BSc / UvA / 2020-21
  • Open Problems in Modern Astrophysics
    guest lecturer / MSc / UvA / 2021-22, 2022-23
  • Turning Points in Science
    guest lecturer / BSc / UvA / 2020-21, 2021-22, 2022-23
  • Astronomy 98: Research Tutorial in Astrophysics
    guest lecturer / BSc / Harvard / 2018-19
  • Full publication list: ADS library

    Selected publications:

    (* indicates students working under my supervision)
    1. *D. Linssen and A. Oklopčić: Expanding the inventory of spectral lines used to trace atmospheric escape in exoplanets; accepted for publication in A&A (June 2023); arXiv:2306.06971

    2. Z. Zhang, C.V. Morley, M. Gully-Santiago, M. MacLeod, A. Oklopčić, J. Luna, Q. Tran, J.P. Ninan, S. Mahadevan, D.M. Krolikowski, W.D. Cochran, B.P. Bowler, M. Endl, G. Stefánsson, B.M. Tofflemire, A. Vanderburg, G.R. Zeimann (2023): Giant Tidal Tails of Helium Escaping the Hot Jupiter HAT-P-32 b; Science Advances 9, eadf8736; arXiv:2306.03913

    3. K.A. Bennett, S. Redfield, A. Oklopčić, I. Carleo, J.P. Ninan, M. Endl (2023): Nondetection of Helium in the Hot Jupiter WASP-48b; AJ 165, 264; arXiv:2305.02465

    4. *D. Linssen, A. Oklopčić, M. MacLeod (2022): Constraining planetary mass-loss rates by simulating Parker wind profiles with Cloudy; A&A 667, A54; arXiv:2209.03677

    5. J.J. Spake, A. Oklopčić, L.A. Hillenbrand, H.A. Knutson, D. Kasper, F. Dai, J. Orell-Miquel, S. Vissapragada, M. Zhang, J.L. Bean (2022): Non-detection of He I in the atmosphere of GJ1214b with Keck/NIRSPEC, at a time of minimal telluric contamination; ApJ Letters 939, L11; arXiv:2209.03502

    6. M. MacLeod and A. Oklopčić (2022): Stellar Wind Confinement of Evaporating Exoplanet Atmospheres and Its Signatures in 1083 nm Observations; ApJ 926, 226; arXiv:2107.07534

    7. J.J. Spake, A. Oklopčić, L.A. Hillenbrand (2021): The Posttransit Tail of WASP-107b Observed at 10830 A; AJ 162, 284; arXiv:2107.08999

    8. D. Kasper, J.L. Bean, A. Oklopčić, I. Malsky, E.M.-R. Kempton, J.-M. Désert, L.A. Rogers, M. Mansfield (2020): Nondetection of Helium in the Upper Atmospheres of Three Sub-Neptune Exoplanets; AJ 160, 258; arXiv:2007.12968

    9. S. Vissapragada, H.A. Knutson, N. Jovanovic, *C. Harada, A. Oklopčić, J. Eriksen, D. Mawet, M.A. Millar-Blanchaer, S. Tinyanont, G. Vasisht (2020): Constraints on Metastable Helium in the Atmospheres of WASP-69b and WASP-52b with Ultranarrowband Photometry; AJ 159 278; arXiv:2004.13728

    10. A. Oklopčić , M. Silva, P. Montero-Camacho, C.M. Hirata (2020): Detecting Magnetic Fields in Exoplanets with Spectropolarimetry of the Helium Line at 1083 nm; ApJ 890, 88 ; arXiv:1910.02504

    11. A. Oklopčić (2019): Helium Absorption at 1083 nm from Extended Exoplanet Atmospheres: Dependence on Stellar Radiation; ApJ 881, 133 ; arXiv:1903.02576

    12. M. Mansfiled, J. Bean, A. Oklopčić , L. Kreidberg, J.-M. Désert, E.M.R. Kempton, M. R. Line, J. J. Fortney, G. W. Henry, M. Mallonn, K. B. Stevenson, D. Dragomir, R. Allart and V. Bourrier: Detection of Helium in the Atmosphere of the Exo-Neptune HAT-P-11b, ApJL, 868, L34 (2018);

    13. J. J. Spake, D. K. Sing, T. M. Evans, A. Oklopčić , V. Bourrier, L. Kreidberg, B. V. Rackham, J. Irwin, D. Ehrenreich, A. Wyttenbach, H. R. Wakeford, Y. Zhou, K. L. Chubb, N. Nikolov, J. M. Goyal, G. W. Henry, M. H. Williamson, S. Blumenthal, D. R. Anderson, C. Hellier, D. Charbonneau, S. Udry, N. Madhusudhan: Helium in the eroding atmosphere of an exoplanet, Nature 557, 68 (2018), arXiv:1805.01298

    14. A. Oklopčić and C.M. Hirata (2018): A New Window into Escaping Exoplanet Atmospheres: 10830 A Line of Helium; ApJL 855, L11 ;

    15. A. Oklopčić , C. M. Hirata, K. Heng: How does the shape of the stellar spectrum affect the Raman scattering features in the albedo of exoplanets?, ApJ 846, 91 (2017), arXiv:1708.04243

    16. A. Oklopčić , P. F. Hopkins, R. Feldmann, D. Kereš, C.-A. Faucher-Giguère, N. Murray: Giant clumps in the FIRE simulations: a case study of a massive high-redshift galaxy, MNRAS 465, 952 (2017), arXiv:1603.03778

    17. T. Venumadhav, A. Oklopčić , V. Gluscevic, A. Mishra, C. M. Hirata: A new probe of magnetic fields in the pre-reionization epoch: I. Formalism, PRD 95, 083010 (2017), arXiv:1410.2250

    18. A. Oklopčić , C. M. Hirata, K. Heng: Raman scattering by molecular hydrogen and nitrogen in exoplanetary atmospheres, ApJ 832, 30 (2016), arXiv:1605.07185

    19. A. Oklopčić and C. M. Hirata: Lyman-alpha heating of inhomogeneous high-redshift intergalactic medium, ApJ 779, 146 (2013), arXiv:1307.6859

    20. A. Oklopčić , V. Smolčić, S. Giodini, G. Zamorani, L. Bîrzan, E. Schinnerer, C. L. Carilli, A. Finoguenov, S. Lilly, A. Koekemoer, N. Z. Scoville: Identifying dynamically young galaxy groups via wide-angle tail galaxies: A case study in the COSMOS field at z=0.53, ApJ 713, 484 (2010), arXiv:1003.0675


    a.oklopcic {at}
    Science Park 904, 1098 XH Amsterdam, Netherlands