Can a telescope lead the way in renewable energy? AtLAST is the first to integrate sustainable sources in its design, aiming to reduce emissions while empowering local communities and bridging the gap...

¿Puede un telescopio liderar el camino hacia las energías renovables? AtLAST es el primero que integra la sustentabilidad en su diseño, con el objetivo de reducir las emisiones, mientras contribuye a ...

[Abridged] The [OIII]$_{88μm}$/[CII]$_{158μm}$ and [OIII]$_{88μm}$/[NII]$_{122μm}$ luminosity ratios have shown to be promising tracers of the ionisation state and gas-phase metallicity of the ISM. Ob...

The outer region of the interstellar medium (ISM) is witness to dynamically important events in a galaxy's evolutionary history such as outflows, inflows, tidal interactions, and mergers, as well as dynamical structures affecting its current evolution such as bars and spiral arms. Studying imprints of these processes in the diffuse, extended molecular gas is best achieved by a single dish telescope which can cover a large field of view with good sensitivity to large-scale structures. In this work we present results from APEX line emission maps of two nearby galaxies: the Circinus galaxy in the CO(3-2) transition, and NGC 1097 in CO(2-1), covering their full optical extents. We detect gas at the largest extents seen for these galaxies yet, at 5$^{\prime}$ ($r \approx 6$ kpc) for the Circinus galaxy, and $4^{\prime}.5$ ($r \approx 18$ kpc) for NGC 1097, and compute total CO luminosities of $L^{\prime}_{\mathrm{CO(3-2)}} = (1.5\pm0.4)\times10^{8}$ K km s$^{-1}$ pc$^{2}$ and $L^{\prime}_{\mathrm{CO(2-1)}} = (7.0\pm1.7)\times10^{8}$ K km s$^{-1}$ pc$^{2}$, corresponding to molecular gas masses of $(2.1\pm1.0)\times10^{9}$ M$_{\odot}$ and $(4.7\pm1.9)\times10^{9}$ M$_{\odot}$, respectively. We further analyze the large-scale gas kinematics via PV diagrams and tilted ring modeling using $^{\mathrm{3D}}$BAROLO. We detect notable features in both galaxies beyond the well-studied central regions: in the Circinus galaxy we detect molecular gas embedded in a bar-like structure, whose kinematic signature is also evident in the major axis PV diagram, and in NGC 1097, we observe tidal molecular gas involved in the interaction of NGC 1097 with the companion galaxy NGC 1097A. The clear detection of such molecular gas structures shows promise in conducting large-scale molecular gas studies toward nearby galaxies with APEX and, in the future, the Atacama Large Aperture Submillimeter Telescope (AtLAST).

Welcome to the official YouTube channel for the Atacama Large Aperture Submillimeter Telescope (AtLAST) project! As pioneers in the field of astronomical research and exploration, AtLAST is revolution...

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A workshop aiming at mobilizing the French community into the AtLAST project took place in Paris, France on May 12th-14th, 2025. 85 scientists and engineers participated, with about 50% of them attend...

Welcome to the AtLAST Forum, a platform for the community to exchange ideas and opinions about the AtLAST project and anything related to it.

YouTube video by Jannik Sinner