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Heavy Elements Unveil the Non-primordial Origin of the Giant H I Ring in Leo

  • Authors: Edvige Corbelli, Giovanni Cresci, Filippo Mannucci, David Thilker, and Giacomo Venturi

2021 The Astrophysical Journal Letters 908 L39.

  • Provider: AAS Journals

Caption: Figure 1.

Left panel: H I contours of the Leo ring are overlaid to the optical image of the M96 group (Sloan Digital Sky Survey (SDSS) color image). In magenta the Arecibo contour at NH I = 2 × 1018 cm−2, in yellow the VLA H I contours of the southern part of the ring Schneider et al. (1986). Crosses indicate background quasi-stellar objects (QSOs; Rosenberg et al. 2014), and red squares indicate the H I clumps observed with the Multi Unit Spectroscopic Explorer (MUSE): Clump1(C1), Clump2(C2), and Clump2E(C2E). The 1 arcmin2 angular size of the MUSE field is shown in the bottom-left corner. Right panels: MUSE Hα images of Clump1 and of Clump2E show the five nebular regions detected. The corresponding GALEX-far-ultraviolet (FUV) continuum emission is displayed to the left of the Hα images. The southernmost FUV source in the field of Clump1 is a background galaxy.

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