5000+ new galaxies in the MW disk

Location of the 5000+ new galaxies unveiled behind MW’s ZoA by Laura Baravalle and María Victoria Alonso from Instituto de Astronomía Teórica y Experimental (IATE), Córdoba, Argentina

Although the VVV Survey and eXtended VVVX are ment to study variability in the Milky Way most crowded area, the bulge and disk, the team, leaded by Laura Baravalle and María Victoria Alonso contributed to complete the knowledge about the large-scale distribution of galaxies in the Zone of Avoidance (ZoA), which was far from complete mostly due to high interstellar extinction and to source confusion at lower Galactic latitudes.

The team could identify extended objects and measure their sizes, the light concentration index, magnitudes, and colours. The confirmation process included morphological and colour constraints and visual inspection. The result is a catalogue of 5563 visually confirmed galaxies, where only 45 were previously known.

The product is called “VVV NIRGC”, a new data set providing information for extragalactic studies in the Galactic plane.

More information on the paper published at Monthly Notices of the Royal Astronomical Society;

The VVV near-IR galaxy catalogue beyond the Galactic disc

Laura D Baravalle, María Victoria Alonso, Dante Minniti, José Luis Nilo Castellón, Mario Soto, Carlos Valotto, Carolina Villalón, Darío Graña, Eduardo B Amôres, Fernanda Milla Castro. Monthly Notices of the Royal Astronomical Society, Volume 502, Issue 1, March 2021, Pages 601–620, https://doi.org/10.1093/mnras/staa4020