Webb's Deep Spectrum Bolsters Black Hole Star Model for Early-Universe Dots
Astronomers using the James Webb Space Telescope have obtained the deepest spectrum yet of the distant 'little red dot' GLIMPSE-17775, uncovering more than 40 spectral lines that collectively support the black hole star (BH*) scenario — a rapidly accreting black hole wrapped in a dense gas cocoon. The data, including an iron forest, helium signatures, and electron scattering, together with Hubble observations, explain features like the Balmer break and why many little red dots are X-ray faint, reinforcing a coherent picture of these objects in the early universe.