Feedback on Feedback (Chris was right)
Publication information:
Abstract
Forty-seven years and more than two-thousand citations ago, two young theorists drew a picture of the interstellar medium's structure as dominated by supernova-driven cavities punctuated by cold clouds often found just beyond the cavities' surfaces. Turns out they were right. McKee & Ostriker's 1977 picture of the ISM is surprisingly close to what observations and analyses made over just the past five years have shown: that a galaxy's ISM is "bubbly," with its relatively cold star-forming clouds lying in the web of filamentary-like gas between and around the bubbles.
In this talk, I will present a wide array of Milky Way observations, based on Gaia-enabled 3D dust mapping and measurements of stellar clusters and their motions, along with CO spectral-line cubes, that all together paint a picture where the Sun resides (for now) in the Local Bubble, which is itself touched by many other large-scale supernova/wind-driven cavities. Nearly all of the "famous" star-forming regions near us lie on the surface of these cavities--and some even show obvious signs of being "flattened" by the collision of multiple bubbles. I will also show beautiful corroborating evidence for this view using JWST and ALMA observations of external galaxies.
I will also highlight the data science techniques and tools used in our team's contributions to this new view of the Milky Way, including improvements to 3D dust-mapping and clustering algorithms, and data exploration and visualization tools including glue and WorldWide Telescope. I will conclude with thoughts on how AI-enhanced augmented reality may be not just nice, but actually necessary, to fully appreciate the six-dimensional view of the ISM we are building now, in the near future.
The talk will be presented on behalf of a large international collaboration, and nearly all of the Milky Way data and tools shown in it are being made available at MilkyWay3D.org.
at "The Fullness of Space," a meeting in honor of Chris McKee
Full text
Forty-seven years and more than two-thousand citations ago, two young theorists drew a picture of the interstellar medium's structure as dominated by supernova-driven cavities punctuated by cold clouds often found just beyond the cavities' surfaces. Turns out they were right. McKee & Ostriker's 1977 picture of the ISM is surprisingly close to what observations and analyses made over just the past five years have shown: that a galaxy's ISM is "bubbly," with its relatively cold star-forming clouds lying in the web of filamentary-like gas between and around the bubbles.
In this talk, I will present a wide array of Milky Way observations, based on Gaia-enabled 3D dust mapping and measurements of stellar clusters and their motions, along with CO spectral-line cubes, that all together paint a picture where the Sun resides (for now) in the Local Bubble, which is itself touched by many other large-scale supernova/wind-driven cavities. Nearly all of the "famous" star-forming regions near us lie on the surface of these cavities--and some even show obvious signs of being "flattened" by the collision of multiple bubbles. I will also show beautiful corroborating evidence for this view using JWST and ALMA observations of external galaxies.
I will also highlight the data science techniques and tools used in our team's contributions to this new view of the Milky Way, including improvements to 3D dust-mapping and clustering algorithms, and data exploration and visualization tools including glue and WorldWide Telescope. I will conclude with thoughts on how AI-enhanced augmented reality may be not just nice, but actually necessary, to fully appreciate the six-dimensional view of the ISM we are building now, in the near future.
The talk will be presented on behalf of a large international collaboration, and nearly all of the Milky Way data and tools shown in it are being made available at MilkyWay3D.org.
at "The Fullness of Space," a meeting in honor of Chris McKee
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This presentation was given on Tuesday, May 14, 2024 in Berkeley, CA