Study of the assembly of massive galaxies over the last 13 billion years with the deepest cosmological scans of GTC and JWST (SHARDSJWST)


Project webpage:

Principal Investigator: Pablo G. Pérez González

PhD student: Ángela García Argumánez (UCM)

We applied for funding to investigate the formation and evolution of Milky Way-like or more massive galaxies. This work is based on 2 highly interconnected projects that take advantage of the exploitation of 2 unique observatories: GTC and JWST.

The unique and extremely competitive nature of our project is justified not only by the use of these 2 unique observatories, but also because we will analyse data from 2 surveys that have been approved as Legacy Programmes because of their innovative strategy and their usefulness for a wide variety of topics within Extragalactic Astrophysics. More specifically, this proposal is based on 2 projects that are unparalleled in the world and that have as co-I’s some of the most renowned experts in the field of galactic evolution. The first of these observational projects is the only GTC-approved Large Program, SHARDS Frontier Fields, which inherited the ESO/GTC Large Program SHARDS strategy, both adding more than 500 hours of guaranteed GTC time in exceptional atmospheric conditions (in terms of seeing and transparency). In addition SHARDS is being extended into the infrared with the NIRSH project. The second legacy programme is in fact a combination of 2 different surveys (using several instruments) that have already been approved to use JWST. More specifically, we will look at preparing the observations of 1 of the 13 “Early Release Science” projects that were approved in 2018, CEERS, and the Guaranteed Time granted to the European Consortium Science Team that has built MIRI.

Among the many scientific topics that can be addressed with the data from these surveys, in this call for funds we intend

to focus on the analysis of the unique data from GTC and JWST for a very specific topic: the formation and evolution of the most massive galaxies in our environment, those with masses similar to or greater than that of the Milky Way, over the last 13 Gyr.

(0>7) that aim to obtain a global and consistent view of the evolution of massive galaxies. These issues emanate directly from our previous experience. Since we lead the SHARDS+ projects (as PIs) and as Co-I’s of CEERS and MIRI-GTO, we are obliged by observatory rules to provide processed and measured data and analysis software to the individual survey teams and to the international astronomical community. Therefore, the funds we are requesting will not only fund our research but also facilitate the research of the entire community. The required period of execution includes the 2 years before the launch of JWST, where we will prepare the CEERS/MIRI-GTO and GO observations that we request, and the 2 years after, where we will exploit the first JWST data.

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Related publications

SHARDS Frontier Fields: Physical Properties of a Low-mass Ly alpha Emitter at z=5.75
Star-forming galaxies at low-redshift in the SHARDS survey
The CANDELS/SHARDS multi-wavelength catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission line fluxes and Star Formation Rates
A deeper look at the dust attenuation law of star-forming galaxies at high redshift