|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Predictions for Ultra-Deep Radio Counts of Star-Forming Galaxies | | Claudia Mancuso
; Andrea Lapi
; Zhen-Yi Cai
; Mattia Negrello
; Gianfranco De Zotti
; Alessandro Bressan
; Matteo Bonato
; Francesca Perrotta
; Luigi Danese
; | | Date: |
30 Jul 2015 | | Abstract: | We have worked out predictions for the radio counts of star-forming galaxies
down to nJy levels, along with redshift distributions down to the detection
limits of the phase 1 Square Kilometer Array MID telescope (SKA1-MID) and of
its precursors. Such predictions were obtained by coupling epoch dependent star
formation rate (SFR) functions with relations between SFR and radio
(synchrotron and free-free) emission. The SFR functions were derived taking
into account both the dust obscured and the unobscured star-formation, by
combining far-infrared (FIR), ultra-violet (UV) and H_alpha luminosity
functions up to high redshifts. We have also revisited the South Pole Telescope
(SPT) counts of dusty galaxies at 95,GHz performing a detailed analysis of the
Spectral Energy Distributions (SEDs). Our results show that the deepest
SKA1-MID surveys will detect high-z galaxies with SFRs two orders of magnitude
lower compared to Herschel surveys. The highest redshift tails of the
distributions at the detection limits of planned SKA1-MID surveys comprise a
substantial fraction of strongly lensed galaxies. We predict that a survey down
to 0.25 microJy at 1.4 GHz will detect about 1200 strongly lensed galaxies per
square degree, at redshifts of up to 10. For about 30% of them the SKA1-MID
will detect at least 2 images. The SKA1-MID will thus provide a comprehensive
view of the star formation history throughout the re-ionization epoch,
unaffected by dust extinction. We have also provided specific predictions for
the EMU/ASKAP and MIGHTEE/MeerKAT surveys. | | Source: | arXiv, 1507.8411 | | 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