Welcome to the Galaxy Ecosystems Science Working Group Page

Topics: Galactic structure; interstellar medium and star formation; star formation laws, nearby galaxies; outflows and inflows; supermassive black holes (SMBHs)

The ngVLA would be a powerful tool to study the detailed astrophysics of star formation both within the Milky Way and nearby galaxies. With an unprecedented combination of high angular resolution and both line and continuum sensitivity, this revolutionary facility would: (1) provide new insight on the fundamental physics behind radio emission; (2) allow detailed spectroscopic characterization of the interstellar medium in all sorts of astronomical systems; (3) directly measure the ionizing photon rate of newly formed massive stars with the ability to penetrate through high columns of dust for extremely compact, embedded systems; (4) study dust physics by accessing the cold/massive dust component that powers the Raleigh-Jeans tail of dust spectral energy distributions; and (5) directly study the role of magnetic fields on the star formation process by increasingly pushing into the Faraday-thin regime where polarization observations should begin to probe deep into star forming regions. The combination of sensitivity and astrometric accuracy promised by the ngVLA would further allow studies of the motions around black holes and at the base of jets, measurements of proper motions in Local Group galaxies, and refinements to our knowledge of Galactic structure.

Membership - Please feel free to join!
  1. Cornelia Lang (SWG chair and SAC)
  2. Alberto Bolatto (SAC)
  3. Kelsey Johnson
  4. Kotaro Kohno (SAC)
  5. Kristina Nyland
  6. Chris Hales
  7. Snezana Stanimirovic
  8. Eric Murphy (ngVLA)
  9. Adam Ginsburg
  10. Crystal Brogan
  11. David Meier
  12. Erik Rosolowsky
  13. Frazer Owen
  14. Adam Leroy (SAC)
  15. Fabian Walter (SAC)
  16. Tony Wong

Resources and Documents:

Working Science Cases for the ngVLA related to “Galaxy Ecosystems”

A Alberto Bolatto Highly Ionized Lines from the Intergalactic Medium
B

Kotaro Kohno

Kristina Nyland?

Absorption Line Studies of AGN
C

Fabian Walter

Snez Stanimirovic

HI in the Nearby Universe
D Eric Murphy Continuum Emission From Galaxies: understanding mechanisms
E Snez Stamnirovic Thermal Filaments in the Galaxy and in Galaxies?
F Cornelia Lang

High Resolution Mapping of Galactic centers - Star Formation and Polarization
G Cornelia Lang Accretion onto SgrA* (RRLs)
H Chris Hales Polarization in Galaxies
I Kelsey Johnson Star Formation in a range of extreme physical environments
J

Tony Wong

David Meier
Densities and Temperatures from Formaldehyde and Ammonia to 5 Mpc
K

Eric Murphy?

Kelsey Johnson?
Continuum and RRLs from galaxies - star formation
L

Tony Wong

Snez Stanimirovic?
Tracing the Hidden Diffuse Molecular ISM
M Frazer Owen S-Z Effect in Normal Galaxies
N Frazer Owen Thomson Scattering
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Topic attachments
I Attachment Action Size Date Who Comment
NGVLA_AAS2015V2.pptxpptx NGVLA_AAS2015V2.pptx manage 6 MB 2017-02-21 - 13:47 AlbertoBolatto Power Point from Kelsey about ngVLA ideas
Topic revision: r4 - 2017-09-14, AlbertoBolatto
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