Trinity College Dublin
Dublin, IR
Currently a postdoc at Trinity College Dublin working with Johanna Vos to explore the weather on distant worlds using JWST. I'm a co-developer of petitRADTRANS, and I'm happy to answer any of your retrieval questions.
Previously I completed my PhD at the Max Planck Institute for Astronomy, working with Paul Molliere and Laura Kreidberg. As part of the ExoGRAVITY team I used VLTI/GRAVITY in order to determine atmospheric properties and evolutionary history of the HR 8799 system. Check out the paper describing our results, or download the data and retrieval results from Zenodo yourself! After the launch of JWST, I am particularly interested in characterizing atmospheres in the mid infrared in order to better understand their cloud properties and dynamics.
Apart from astronomy, I'm an avid musician and photographer, and enjoy travelling around the world to learn about new cultures and people.
Research Interests
I'm mostly interested in exoplanet observation and characterization, trying to learn about atmospheric composition and structure and what this can tell us about the climate and formation history of the planet. I have worked with both ground-based and space based observatories, and hope to continue to push the boundaries of our observational capabilities using next generation telescopes.
In the long term we are working towards identifying biosignatures on exoplanets, but I'm also concerned with the biosphere on our own planet. I support Astronomers for Planet Earth, and hope to continue working to better our stewardship of our own environment.
Publications
Peer-reviewed- Vasist, M. et al. (2023) "Neural posterior estimation for exoplanetary atmospheric retrieval" A&A 72, A147. DOI: 10.1051/0004-6361/202245263
- Mollière, P. et al. (2022) "Interpreting the Atmospheric Composition of Exoplanets: Sensitivity to Planet Formation Assumptions" ApJ, 934, 74. DOI: 10.3847/1538-4357/ac6a56
- Patapis, P., Nasedkin, E. et al. (2022) "Direct emission spectroscopy of exoplanets with the medium resolution imaging spectrometer on board JWST MIRI. I. Molecular mapping and sensitivity to instrumental effects" A&A, 658, A72. DOI: 10.1051/0004-6361/202141663
- Lacour, S. et al. (2021) "The mass of β Pictoris c from β Pictoris b orbital motion" A&A, 654, L2. DOI: 10.1051/0004-6361/202141889
- Cugno, G. et al. (2021) "Molecular mapping of the PDS70 system. No molecular absorption signatures from the forming planet PDS70 b" A&A, 653, A12. DOI: 10.1051/0004-6361/202140632
- Kammerer, J. et al. (2021) "GRAVITY K-band spectroscopy of HD 206893 B. Brown dwarf or exoplanet" A&A, 652, A57. DOI: 10.1051/0004-6361/202140749
- Wang, J. et al. (2021) "Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY" AJ, 161, 3. DOI: 10.3847/1538-3881/abdb2d
- Cantalloube, F. et al. (2020) "Exoplanet imaging data challenge: benchmarking the various image processing methods for exoplanet detection" SPIE, 11448. DOI: 10.1117/12.2574803
- Lacour, S. et al. (2020) "The ExoGRAVITY project: using single mode interferometry to characterize exoplanets" SPIE, 11446. DOI: 10.1117/12.2561667
- Nowak, M. et al. (2020) "Direct confirmation of the radial-velocity planet β Pictoris c." ApJ, 859, 2. DOI: 10.1051/0004-6361/202039039
- Mollière, P. et al. (2020) "Retrieving scattering clouds and disequilibrium chemistry in the atmosphere of HR 8799e" A&A 640, A131 arXiv: 2006.09394
- Liu, T. et al. (2018) "A holistic perspective on the dynamics of G035.39-00.33: the interplay between gas and magnetic fields." ApJ, 859, 2. arXiv: 1803.09457
- Nasedkin, E. (2019). "Processing JUPITER hydrodynamics simulation data for visualisation in Paraview." (Semesterarbeit). ETH Zürich, Zürich, CH.
- Nasedkin, E. (2018). "Characterising filamentary structure in Planck Galactic Cold Clumps with the SCOPE dataset." (Bachelor’s thesis). University of Waterloo, Waterloo, ON.
- Nasedkin, E. (2017) "Characterisation of a cryogenic stepper motor for ERIS." (Work Report). Zürich, CH.
- Nasedkin, E. (2016). "Developing a xenon electroluminescent source for the nEXO collaboration" (Work Report). Montréal, QC.
- DEAP Collaboration. (2017). In-situ characterization methods for the Hamamatsu R5912 photomultiplier tubes used in the DEAP-3600 experiment. Journal of Instrumentation. arXiv: 1705.10183
- Nasedkin, E. (2016). "Afterpulsing in Photomultiplier Tubes for DEAP-3600". (Work Report). Sudbury, ON.
Posters and Presentations
C/O? More like C/No! Why retrievals don't solve everything. Exoclimes VI. (2023).
Four of a Kind: HR8799. Exploring the atmospheres of the HR 8799 system with GRAVITY Spirit of Lyot. (2022).
Four of a Kind: HR8799. Sagan Summer School. (2021).
Atmospheric Retrievals with MIRI. Leiden Observatory. (2020).
The MIRI MRS can be used to measure the C/O ratio of sub-stellar atmospheres. Tackling the Complexities of Substellar Objects: From Brown Dwarfs to (exo-)Planets. (2020).
Visualising JUPITER Hydrodynamic Simulations using Paraview and VTK. ETH Zurich Semesterarbeit. (2019).
Data Processing for Filaments. Bachelor's Thesis Presentation, University of Waterloo. (2018).
The ERIS instrument for the VLT 5th EIROForum School of Instrumentation. (2017).
Afterpulsing in DEAP-3600 PMTs DEAP-3600 Collaboration Meeting. (2016).