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Spatially resolved imaging of the inner Fomalhaut disk using JWST/MIRI
Rieke, George H.; Gáspár, András; Beichman, Charles +9 more
Planetary debris disks around other stars are analogous to the asteroid and Kuiper belts in the Solar System. Their structure reveals the configuration of small bodies and provides hints for the presence of planets. The nearby star Fomalhaut hosts one of the most prominent debris disks, resolved by the Hubble Space Telescope, Spitzer, Herschel and…
Accurate oxygen abundance of interstellar gas in Mrk 71 from optical and infrared spectra
Weiner, Benjamin; Spilker, Justin; Fadda, Dario +9 more
The heavy element content (`metallicity') of the Universe is a record of the total star formation history. Gas-phase metallicity in galaxies, as well as its evolution with time, is of particular interest as a tracer of accretion and outflow processes. However, metallicities from the widely used electron temperature (Te) method are typic…