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Jonatan Rudrasingam

@astrojonatan.bsky.social

PhD student at USyD working with asteroseismology of bright stars with TESS and SONG.

Jonatan Rudrasingam @astrojonatan.bsky.social · 24/09/2026

My second scientific paper is now public on arXiv! arxiv.org/abs/2609.25343 Asteroseismology is powerful for determining stellar masses, radii, and ages, which are useful in exoplanet studies and galactic archaeology (1/9)

arxiv.org

Asteroseismology and interferometry of the F7V spectroscopic binary $χ$ Draconis A in the TESS CVZ

We present a detailed analysis of the asteroseismic main-sequence benchmark star $χ$ Dra A in the TESS northern CVZ. We aim to derive stellar mass and radius from asteroseismic modelling of individual...

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Reposted by Jonatan Rudrasingam

MAST - Mikulski Archive for Space Telescopes @mast-news.bsky.social · 12/03/2026

New HLSP: HALO-TESS provides custom light curves for 98 saturated stars in TESS Full Frame Images. The team presents 411 light curves from Sectors 1-93, of which 77 are identified as variables! archive.stsci.edu/hlsp/halo-tess

An HR diagram from the Hipparcos-Tycho catalog. The stars in the HALO-TESS sample are color-coded by the number of available TESS sectors, with their sizes indicating their apparent V-band magnitudes. The y-axis plots absolute V magnitude ranging from 6 to -9, the x-axis plots B-V color ranging from -0.5 to 2.0. A majority of the HALO-TESS targets land from absolute V magnitudes of 2.5 to -6 and B-V colors from -0.5 to 0.25, although a few targets populate unique areas of parameter space.

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Jonatan Rudrasingam @astrojonatan.bsky.social · 28/02/2026

My first scientific paper is now public on arXiv! TESS struggles with the brightest stars due to saturation from overexposure. This is unfortunate, because these are the stars that are amenable to photon-hungry follow-up methods, such as spectroscopy or interferometry (1/9) arxiv.org/abs/2602.22472

arxiv.org

Halo Photometry and Asteroseismology for 98 of the Brightest Stars Observed by TESS

The Transiting Exoplanet Survey Satellite (TESS) mission has facilitated studies of asteroseismology, eclipsing binaries, and transits in many stars. However, the brightest stars saturate TESS, yet th...

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