Gas Density, Stability, and Starbursts Near the Inner Lindblad Resonance of the Milky Way

Details Gas Density, Stability, and Starbursts Near the Inner Lindblad Resonance of the Milky Way Gas Density, Stability, and Starbursts Near the Inner Lindblad Resonance of the Milky Way

2004-05-17

arxiv.org/abs/astro-ph/0405330v1

Astrophys.J. 614 (2004) L41

Astronomy and Astrophysics

Astrophysics

11 pages, 1 table 1 color figure, submitted to ApJL

Scientific paper

10.1086/425304

A key project of the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO) reported by Martin et al. (2004) is the mapping of CO J=4-3 and J=7-6 emission from the inner Milky Way, allowing determination of gas density and temperature. Galactic center gas that Binney et al. (1991) identify as being on x_2 orbits has a density near 10^3.5 cm ^-3, which renders it only marginally stable against gravitational coagulation into a few Giant Molecular Clouds, as discussed by Elmegreen (1994). This suggests a relaxation oscillator mechanism for starbursts in the Milky Way, where inflowing gas accumulates in a ring at 150 pc radius for approximately 20 million years, until the critical density is reached, and the resulting instability leads to the sudden formation of giant clouds and the deposition of 4 x 10^7 solar masses of gas onto the Galactic center.

Affiliated with

Also associated with

No associations

Rating

Gas Density, Stability, and Starbursts Near the Inner Lindblad Resonance of the Milky Way does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gas Density, Stability, and Starbursts Near the Inner Lindblad Resonance of the Milky Way, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas Density, Stability, and Starbursts Near the Inner Lindblad Resonance of the Milky Way will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-284547