Welcome to my personal Website!Reduce your data with MIDIR!Wololo!You can call me Al.I use Arch btw.Check out ASTRA!Do you listen to... uhh... the offspring?GAEL is much faster than ISIS!Han shot first!Read more Books!How many SEDS does one have to fit to get a job around here?

The massive hot subdwarf binary LAMOST J065816.72+094343.12026

F. Mattig, B. N. Barlow, D. Liu, M. Dorsch, S. Geier, M. Pritzkuleit et al.

A hot subdwarf in a 7.7 hour orbit with an unseen companion of 1.30 solar masses, close enough to the Chandrasekhar limit that it is unclear whether it is a massive white dwarf or a neutron star.

Read moreDOIarXiv:2601.03810

A 500 pc volume-limited sample of hot subluminous stars III. The short-period binary population2026

H. Dawson, M. Dorsch, J. Munday, S. Geier, F. Mattig, M. Pritzkuleit et al.

Orbits for 34 newly found close binaries in the 500 pc sample, giving a short-period binary fraction of 34.7% across 301 hot subdwarfs and a volume-complete estimate of their contribution to the Galactic Type Ia rate.

Read moreDOIarXiv:2608.27673

ASTRA

A Qt6 desktop application for managing and analysing stellar astrophysics data: catalogues, spectra, photometry, radial velocities and spectral energy distributions in one place.

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GAEL

Grid-based Atmospheric Estimation Library. A C++20 framework that fits observed stellar spectra against synthetic model grids, written to replace the grid fitting scripts in ISIS.

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