The Hawaii Two-0 Survey (H20) is a 30 deg2 ultradeep galaxy survey combining Subaru Hyper-SuprimeCam imaging, CFHT MegaCam imaging, Spitzer imaging, & Keck DEIMOS spectroscopy of two Euclid Deep Calibration Fields (EDF-N and EDF-F).
Euclid Taking Data!
The European Space Agency Euclid Mission successfully launched on July 1, 2023. Read more details on the mission here: https://www.esa.int/Science_Exploration/Space_Science/Euclid
Catalogue Release
The first H20 data catalogue release planned for Fall, 2024.
Subaru
Hyper Suprime-Cam
Subaru Telescope is the 8.2-meter (320 in) flagship telescope of the National Astronomical Observatory of Japan.
Keck
DEIMOS/MOSFIRE
The twin 10-meter Keck Observatory telescopes are among the world’s most scientifically productive optical and infrared telescopes.
CFHT
MegaCam
The CFH Telescope is a 3.2-meter optical/infrared telescope that is a joint facility of Canada, France, and Hawaii.
H20 News
CHAMP Program Beginning Summer 2024
June 3 – Aug 9, 2024
The first year of the CHAMP program will run June 3 – Aug 9 this summer, with four students from UH working at UCR and vice versa.
Isabella Valdes Awarded the NSF GRFP!
April, 2024
Isabella’s proposal, “An Innovative Study of Galaxies in Euclid Deep Fields Using Machine Learning”, was funded by the NSF.
H20 Overview Paper – Final Version Submitted to Euclid Board
April, 2024
“Euclid Preparation. TBD. The Cosmic Dawn Survey (DAWN) of the Euclid Deep and Auxiliary Fields” (McPartland et al. 2024) submitted to the Euclid Consortium Editorial Board.
H20 DR1 Catalog Paper Submitted to Euclid Board
April, 2024
“Euclid Preparation. TBD. Cosmic Dawn Survey: Data Release 1 Multiwavelength Catalogues for Euclid Deep Field North and Euclid Deep Field Fornax” (Zalesky et al. 2024) submitted to the Euclid Consortium Editorial Board.
Grey Murphree Advanced to PhD Candidacy
November, 2023
Grey successfully proposed their PhD project, “Constraining Structure Formation at High Redshift,” which will be advised by István Szapudi.
NEP Coverage Expanded to 20 deg2
October, 2023
Following new requirement mandated by the Euclid Board.
Grey Murphree Awarded the NSF GRFP!
April, 2023
Grey’s project, “Measuring Density Fluctuations at High Redshift”, was funded by the NSF.
Grey Murphree’s 699-1 Project Completed
September 16, 2022
Grey’s project, “Measing Linear Galaxy Bias at High Redshift”, is completed and was successfully evaluated by the GROG.
2021 REU Project Presented at AAS
June 14 2022
Isabella Valdes’s 2021 REU project, “Analysis of ~1500 Massive High-Redshift Galaxies in the Hawaii Twenty Square Degree Survey”, presented at the Summer 2022 AAS conference.
Science Goals
Galaxy Evolution
Probe the assembly of massive galaxies by tracing the evolution of their stellar mass function with >500,000 galaxies at 3 < z < 6 and including several thousand at z > 6.
Stellar Mass Functions
Link the stellar mass of galaxies to their dark matter halos via clustering, for testing of cosmological models.
Dark Energy
Constrain the properties of dark energy using the non-linear power spectrum at high-redshift.
Galaxy Formation
Identify the earliest sites of galaxy formation and reionization, and spectroscopically confirm high-escape fraction candidates.
Quenching in the Early Universe
Identify and confirm the first galaxies to quench their star formation.