SIMBAD references

2024ApJ...974..297D - Astrophys. J., 974, 297 (2024/October-3)

Evidence of a Forming Nucleus in the Fourcade-Figueroa Galaxy.

DOTTORI H. and DIAZ R.J.

Abstract (from CDS):

We analyze data from the IRAS, Wide-field Infrared Survey Explorer, and Planck satellites, revealing an unresolved dust condensation at the center of the Fourcade-Figueroa galaxy (ESO270-G017), which may correspond to a forming nucleus. We model the condensation's continuum spectrum in the spectral range from 3 to 1300 μm using the DUSTY code. The best-fit model, based on the chi-square test, indicates that the condensation is a shell with an outer temperature of Tout ≈ 12 K and an inner boundary temperature of Ti ≈ 500 K. The shell's outer radius is ro = 86.2 pc, and the inner cavity radius is ri = 0.082 pc. The condensation produces an extinction AV = 50 mag, and its luminosity is Lc = 1.08 × 1034 W, which would correspond to a burst of massive star formation approximately similar to the central 5 pc of R 136 in the LMC and NGC 3603, the ionizing cluster of a giant Carina arm H II region. The comparison with normal, luminous, and ultraluminous IR galaxies leads us to consider this obscured nucleus as the nearest and weakest object of this category.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Low-luminosity active galactic nuclei

Simbad objects: 20

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