HETDEX
(Hobby-Everly Telescope Dark Energy Experiment.)
(galaxy survey carried out with HET VIRUS)
HETDEX (for Hobby-Everly Telescope Dark Energy Experiment)
is a galaxy survey to measure the redshift
of a million Lyman-alpha emitters (LAEs) within a range of 1.88 < z < 3.52.
Observation is being carried out on the Hobby-Eberly Telescope (HET), using
an instrument developed for the purpose, VIRUS
(for Visible Integral-field Replicable Unit Spectrographs).
VIRUS is essentially an integral field spectrograph,
but actually 156 separate small spectrographs fed
by 34944 fibers from the telescope's focal plane.
(survey,galaxies,dark energy)
Further reading:
https://en.wikipedia.org/wiki/Hobby-Eberly_Telescope
https://hetdex.org/
https://mcdonaldobservatory.org/hetdex
https://ui.adsabs.harvard.edu/abs/2021ApJ...923..217G/abstract
https://instrumentation.tamu.edu/hetdex-virus/
https://ui.adsabs.harvard.edu/abs/2021AJ....162..298H/abstract
https://www.as.utexas.edu/hetdex/5492-25.pdf
| WaveL | Freq | Photon
Energy | | |
| 350nm | 857THz | 3.6eV | begin | HETDEX |
| 550nm | 545THz | 2.3eV | end | HETDEX |
|
| Redshift | Parsecs
/Distance | Lightyears
/Lookback Years | | |
| 1.88 | 3.36Gpc | 10.97Gly | nearest | HETDEX |
| 3.52 | 3.89Gpc | 12.67Gly | furthest | HETDEX |
|
Referenced by pages:
Hobby-Eberly Telescope (HET)
intensity mapping surveys
Spitzer HETDEX Exploratory Large Area Survey (SHELA)
Index