Wo der extrem heiße Exoplanet Wasp-121b entstand

Die Entdeckung von Methan und Siliziumoxid auf WASP121b liefert neue Einblicke in die Herkunft dieses extrem heißen Exoplaneten.

Bluesky

Frischer Wind: Weltraumteleskop James Webb enthüllt verborgene Details in jungen Sternensystemen

Die verschachtelte Struktur von Gasströmen bestätigt einen Mechanismus, der jungen Sternen beim Wachstum über die Aufnahme von Scheibenmaterial hilft.

Webb finds never-before-seen structures above Jupiter's Great Red Spot - NASASpaceFlight.com

Using the joint NASA, European Space Agency (ESA), and Canadian Space Agency (CSA) James Webb…

Astronomers find first strong evidence of neutron star remnant of exploding star

<p>In the study, published in the journal <em>Science</em>, researchers used two instruments on the James Webb Space Telescope (JWST), MIRI and NIRSpec, to observe the supernova at infrared wavelengths and found evidence of heavy argon and sulphur atoms whose outer electrons had been stripped off (i.e. the atoms had been ionised) close to where the star explosion occurred.</p> <p>The team modelled various scenarios and found that these atoms could only have been ionised by ultra-violet and X-ray radiation from a hot cooling neutron star or, alternatively, from the winds of relativistic particles accelerated by a rapidly rotating neutron star and interacting with surrounding supernova material (pulsar wind nebula).</p>

DGPh-Wissenschaftspreis 2023 für das MIRI-Konsortium an Thomas Henning überreicht

Toot.Cat

On the internet, everyone knows you're a cat — and that's totally okay.

Urknall, Weltall und das Leben: Wie funktioniert der Microshutter des NIRSpec?

Die Microshutter des Near Infrared Spectrograph (NIRSpec) des James Webb Space Telescope (JWST) sind eine einzigartige Technologie.

GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114

We present results from the James Webb Space Telescope (JWST) Director's Discretionary Time Early Release Science (ERS) program 1328 targeting the nearby, Luminous Infrared Galaxy (LIRG), VV 114. We use the MIRI and NIRSpec instruments to obtain integral-field spectroscopy of the heavily obscured Eastern nucleus (V114E) and surrounding regions. The spatially resolved, high-resolution, spectra reveal the physical conditions in the gas and dust over a projected area of 2-3 kpc that includes the two brightest IR sources, the NE and SW cores. Our observations show for the first time spectroscopic evidence that the SW core hosts an AGN as evidenced by its very low 6.2 μm and 3.3 μm PAH equivalent widths (0.12 and 0.017 μm respectively) and mid and near-IR colors. Our observations of the NE core show signs of deeply embedded star formation including absorption features due to aliphatic hydrocarbons, large quantities of amorphous silicates, as well as HCN due to cool gas along the line of sight. We detect elevated [Fe II]/Pfα consistent with extended shocks coincident with enhanced emission from warm H$_{2}$, far from the IR-bright cores and clumps. We also identify broadening and multiple kinematic components in both H$_{2}$ and fine structure lines caused by outflows and previously identified tidal features.