WISE J044634.16−262756.1B Archives

The spectral energy distribution of J0446B including the JWST MIRI/MRS spectrum in blue (the noisy longwavelength range is marked with lighter color). The grey curve shows a stellar photospheric model with Teff = 3100 K (Allard et al. 2012). The four WISE band photometry encompassed both stellar components in the binary system of J0446; the triangles represent the contribution of J0446B to W1 and W2 bands assuming the same flux ratio as the Ks band. The insert panel highlights the 10 µm silicate features, where the orange curve marks the identified continuum, two dashed lines represent emissivity curves of amorphous silicates (olivine) for a single grain size of 0.1 and 2.5 µm (Jaeger et al. 1994), and the dotted line represents that for crystalline silicate of forsterite (Koike et al. 2003). -- astro-ph.EP

Astrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report

The First JWST View of a 30-Myr-old Protoplanetary Disk Reveals a Late-stage Carbon-rich Phase

by Keith CowingDecember 17, 2024December 17, 2024

We present a JWST MIRI/MRS spectrum of the inner disk of WISE J044634.16−262756.1B (hereafter J0446B), an old (∼34 Myr) M4.5 star but with hints of ongoing accretion. The spectrum is […]

WISE J044634.16−262756.1B

The First JWST View of a 30-Myr-old Protoplanetary Disk Reveals a Late-stage Carbon-rich Phase

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Development Of An Adaptive Optics Testbed At MPIA For The ELT/Planetary Camera And Spectrograph (PCS)

Exploring Long-period Architectures: Four New Planet Candidates from Kepler with Periods >342 days

The Selfish Ribosome