|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Star Formation Suppression Due to Jet Feedback in Radio Galaxies with Shocked Warm Molecular Gas | | Lauranne Lanz
; Patrick M. Ogle
; Katherine Alatalo
; Philip N. Appleton
; | | Date: |
18 Nov 2015 | | Abstract: | We present Herschel observations of 22 radio galaxies, selected for the
presence of shocked, warm molecular hydrogen emission. We measured and modeled
spectral energy distributions (SEDs) in 33 bands from the ultraviolet to the
far-infrared to investigate the impact of jet feedback on star formation
activity. These galaxies are massive, early-type galaxies with normal
gas-to-dust ratios, covering a range of optical and IR colors. We find that the
star formation rate (SFR) is suppressed by a factor of ~3-6, depending on how
molecular gas mass is estimated. We suggest this suppression is due to the
shocks driven by the radio jets injecting turbulence into the interstellar
medium (ISM), which also powers the luminous warm H2 line emission.
Approximately 25% of the sample shows suppression by more than a factor of 10.
However, the degree of SFR suppression does not correlate with indicators of
jet feedback including jet power, diffuse X-ray emission, or intensity of warm
molecular H2 emission, suggesting that while injected turbulence likely impacts
star formation, the process is not purely parametrized by the amount of
mechanical energy dissipated into the ISM. Radio galaxies with shocked warm
molecular gas cover a wide range in SFR-stellar mass space, indicating that
these galaxies are in a variety of evolutionary states, from actively
star-forming and gas-rich to quiescent and gas-poor. SFR suppression appears to
have the biggest impact on the evolution of galaxies that are moderately
gas-rich. | | Source: | arXiv, 1511.5968 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER