Studying a Highly Magnified Lensed Galaxy at z~2.8 with ALMA
Authors/Creators
- 1. Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Avenida Gran Bretaña 1111, Valparaíso, Chile
- 2. Institut d'Astrophysique et de Géophysique, Université de Liège, Quartier Agora, Allée du 6 Août 19c, Liège, Belgium
- 3. Centre for Extragalactic Astronomy, Durham University, South Road, Durham DH1 3LE, UK
- 4. Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
Description
The nature of star formation in high-z galaxies and the physical properties of the interstellar medium in which it is taking place are not very well understood as yet. Observations have shown that high-z star-forming galaxies often exhibit turbulent, clumpy, rotating discs, yet the limitations of current telescopes hinder the study of individual star-forming regions within these galaxies. The strong lensing phenomenon magnifies background galaxies located behind rich galaxy clusters, providing an excellent opportunity to study distant sources with enhanced resolution and flux. A notable case is the brightest lensed submm galaxy at z~2.8 behind the massive Bullet Cluster, which has an exceptional differential magnification up to 50 (SMMJ0658, z = 2.778). This poster presents the ALMA data reduction of SMMJ0658 (2015.1.01559.S) with CASA, including the CO(3-2) line moment maps, and the reconstructed lensed galaxy in the source plane using the software Lenstool, and its Python wrapper PyLenstool.
Files
ALMA2023_Poster_Cornil-Baïotto.pdf
Files
(6.2 MB)
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