bibianaprinoth, to Subaru
@bibianaprinoth@astrodon.social avatar

We’re back with direct imaging with Masayuki Kuzuhara.

They used the to observe nearby accelerating stars and search for substellar companions.

They discovered 4 substellar companions, one of which is the brown dwarf HIP 21152 B. The spectrum reveals water and methane. They further modelled the orbit, giving them a dynamical mass of around 28 Mjup.

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bibianaprinoth,
@bibianaprinoth@astrodon.social avatar

Next up, we’ve got Melanie Rowland on protosolar D/H abundance in the coldest brown dwarf.

In recent years, the detection of isotopologues has become a thing for exoplanets and brown dwarfs.

traces and . Rocky planets are thought to get their ratio from comets. Ice giants are also enhanced due to D-enriched ice, while the gas giants are not.

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Quantium40, to random German
@Quantium40@sueden.social avatar

Ist euch mal aufgefallen, dass unsere - ein wunderbares -Atom abgibt?

Den Kern bilden - mit viel positiver Energie - die flankiert von der inerten, absolut potenzialfreien . Darum herum kreist in absurdem Tempo eine nörgelnde, stets negativ geladene .

Aufgrund der Gesetze der findet man in dieser Anordnung übrigens den umso schwieriger, je intensiver man nach ihm sucht. 😉

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