Reviving Paper Threads: Paper day for my PhD student Ivan Kramarenko at @istaresearch.bsky.social ! "Hydrogen-Alpha as a Tracer of Star Formation in the SPHINX Cosmological Simulations" arxiv.org/abs/2509.05403 1/...

We found the most distant confirmed galaxy (some Sergej Boebka vibes 😅) arxiv.org/abs/2505.11263

More exciting measurements on the most luminous little red dot that I know of (F444W=22 at z=4.5!): an unambiguous AGN and a Balmer break in deep UNCOVER and ALT spectroscopy, led by Ivo Labbe arxiv.org/abs/2412.04557

Yesterday was paper day! With deep JWST data from the ALT survey we provide new independent evidence that the new population of faint AGNs in the early Universe seems to have so-called overly massive black holes compared to their stellar mass arxiv.org/abs/2412.02846

My institute ISTA in the nice Viennese forest in Austria now calls for PhD applications, deadline Jan 8 2024. Fully funded ~5 yr US style Grad School. Multiple positions in Astronomy are available. Please distribute and contact me for details! phd.pages.ist.ac.at

If you think MUSE is already oversubscribed, imagine that there will only be one ELT (instead of 4 UTs), which will have various instruments to commission when others can already observe. 😬

Hello Blue Sky! Very happy and grateful to be starting a research group in extragalactic astronomy and contribute to the development of astronomy at ISTA (ista.ac.at) as of this september!