I am a PhD candidate at the Geneva Observatory, where I work with Prof. David Ehrenreich and many other scientists. I am also a member of the NCCR PlanetS collaboration.
My main research topic is the detection and characterization of extra-solar planets, more specifically their upper atmospheres. I am also interested in solving problems related to the observation and description of stellar atmospheres and developing scientific software for the astronomical community. The main instruments I use in my research are high-resolution and/or space-based spectrographs.
My full list of publications can be found on ADS. Here are some highlights:
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L. A. dos Santos, D. Ehrenreich, V. Bourrier, et al. 2020, The high-energy environment and atmospheric escape of the mini-Neptune K2-18 b, A&A Letters 634.
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L. A. dos Santos, D. Ehrenreich, V. Bourrier, et al. 2019, The Hubble PanCET program: An extensive search for metallic ions in the exosphere of GJ 436 b, A&A 629.
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D. Lorenzo-Oliveira, J. Meléndez, Yana Galarza, J. et al. 2019, Constraining the evolution of stellar rotation using solar twins, MNRAS 482.
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L. A. dos Santos, J. Meléndez, J.-D. do Nascimento, et al. 2016, The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars, A&A 592.
You can also look me up on 
orcid.org/0000-0002-2248-3838 and Google Scholar.
Upcoming conferences I plan to attend:
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Stars and Planets in the Ultraviolet: 4-6 May 2020, Tempe (AZ), United States
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Towards Other Earths III: 1-5 June 2020, Lamego, Portugal
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Cool Stars 21: 22-26 June 2020, Toulouse, France
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Exoplanets III: 27-31 July 2020, Heidelberg, Germany
Occasionally I write software in Python and random scripts for astronomical research. Here are some that I think could be useful for other people:
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radial: Pure Python code for working with radial velocities of stars with a companion (checkout the tutorial notebooks here). -
sunburn: Data analysis package of HST far-UV spectra. Feature requests are very welcome! (shoot me an email or post an issue) -
onza: Transiting exospheres -
ESO unpack: Did you just download dozens of GBs of data from ESO’s archive? This script can help you unpack the data.
I wrote summaries of interesting astronomical articles for Astrobites between 2015 and 2017. Here are some of my favorite posts: