The Astrophysical Journal Letters (Jan 2023)
Early Results from GLASS-JWST. XI. Stellar Masses and Mass-to-light Ratio of z > 7 Galaxies
- P. Santini,
- A. Fontana,
- M. Castellano,
- N. Leethochawalit,
- M. Trenti,
- T. Treu,
- D. Belfiori,
- S. Birrer,
- A. Bonchi,
- E. Merlin,
- C. Mason,
- T. Morishita,
- M. Nonino,
- D. Paris,
- G. Polenta,
- P. Rosati,
- L. Yang,
- K. Boyett,
- M. Bradac,
- A. Calabrò,
- A. Dressler,
- K. Glazebrook,
- D. Marchesini,
- S. Mascia,
- T. Nanayakkara,
- L. Pentericci,
- G. Roberts-Borsani,
- C. Scarlata,
- B. Vulcani,
- Xin Wang
Affiliations
- P. Santini
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- A. Fontana
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- M. Castellano
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- N. Leethochawalit
- ORCiD
- School of Physics, University of Melbourne , Parkville 3010, VIC, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia; National Astronomical Research Institute of Thailand (NARIT) , Mae Rim, Chiang Mai, 50180, Thailand
- M. Trenti
- ORCiD
- School of Physics, University of Melbourne , Parkville 3010, VIC, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia
- T. Treu
- ORCiD
- Department of Physics and Astronomy, University of California , Los Angeles, 430 Portola Plaza, Los Angeles, CA 90095, USA
- D. Belfiori
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- S. Birrer
- ORCiD
- Kavli Institute for Particle Astrophysics and Cosmology and Department of Physics, Stanford University , Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94025, USA
- A. Bonchi
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]; Space Science Data Center , Italian Space Agency, via del Politecnico, I-00133, Roma, Italy
- E. Merlin
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- C. Mason
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 København N, Denmark
- T. Morishita
- ORCiD
- IPAC, California Institute of Technology , MC 314-6, 1200 E. California Boulevard, Pasadena, CA 91125, USA
- M. Nonino
- ORCiD
- INAF—Osservatorio Astronomico di Trieste , Via Tiepolo 11, I-34131 Trieste, Italy
- D. Paris
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- G. Polenta
- ORCiD
- Space Science Data Center , Italian Space Agency, via del Politecnico, I-00133, Roma, Italy
- P. Rosati
- ORCiD
- Dipartimento di Fisica e Scienze della Terra, Universitá degli Studi di Ferrara , Via Saragat 1, I-44122 Ferrara, Italy; INAF—OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna , via Gobetti 93/3, I-40129 Bologna, Italy
- L. Yang
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo , Kashiwa, 277-8583, Japan
- K. Boyett
- ORCiD
- School of Physics, University of Melbourne , Parkville 3010, VIC, Australia
- M. Bradac
- ORCiD
- University of Ljubljana , Department of Mathematics and Physics, Jadranska ulica 19, SI-1000 Ljubljana, Slovenia; Department of Physics and Astronomy, University of California Davis , 1 Shields Avenue, Davis, CA 95616, USA
- A. Calabrò
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- A. Dressler
- ORCiD
- The Observatories, The Carnegie Institution for Science , 813 Santa Barbara Street, Pasadena, CA 91101, USA
- K. Glazebrook
- ORCiD
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology , P.O. Box 218, Hawthorn, VIC 3122, Australia
- D. Marchesini
- ORCiD
- Department of Physics and Astronomy, Tufts University , 574 Boston Avenue, Medford, MA 02155, USA
- S. Mascia
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- T. Nanayakkara
- ORCiD
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology , P.O. Box 218, Hawthorn, VIC 3122, Australia
- L. Pentericci
- ORCiD
- INAF—Osservatorio Astronomico di Roma , via di Frascati 33, I-00078 Monte Porzio Catone, Italy ; [email protected]
- G. Roberts-Borsani
- ORCiD
- Department of Physics and Astronomy, University of California , Los Angeles, 430 Portola Plaza, Los Angeles, CA 90095, USA
- C. Scarlata
- ORCiD
- School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USA
- B. Vulcani
- ORCiD
- INAF Osservatorio Astronomico di Padova , vicolo dell’Osservatorio 5, I-35122 Padova, Italy
- Xin Wang
- ORCiD
- Infrared Processing and Analysis Center , Caltech, 1200 E. California Boulevard, Pasadena, CA 91125, USA
- DOI
- https://doi.org/10.3847/2041-8213/ac9586
- Journal volume & issue
-
Vol. 942,
no. 2
p. L27
Abstract
We exploit James Webb Space Telescope (JWST) NIRCam observations from the GLASS-JWST-Early Release Science program to investigate galaxy stellar masses at z > 7. We first show that JWST observations reduce the uncertainties on the stellar mass by a factor of at least 5–10, when compared with the highest-quality data sets available to date. We then study the UV mass-to-light ratio, finding that galaxies exhibit a a two orders of magnitude range of M / L _UV values for a given luminosity, indicative of a broad variety of physical conditions and star formation histories. As a consequence, previous estimates of the cosmic stellar-mass density—based on an average correlation between UV luminosity and stellar mass—can be biased by as much as a factor of ∼6. Our first exploration demonstrates that JWST represents a new era in our understanding of stellar masses at z > 7 and, therefore, of the growth of galaxies prior to cosmic reionization.
Keywords
