Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*

Research output: Contribution to journal › Letter › Research › peer-review

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Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*. / Vanzella, E.; Castellano, M.; Bergamini, P.; Treu, T.; Mercurio, A.; Scarlata, C.; Rosati, P.; Grillo, C.; Acebron, A.; Caminha, G. B.; Nonino, M.; Nanayakkara, T.; Roberts-Borsani, G.; Bradac, M.; Wang, X.; Brammer, G.; Strait, James B; Vulcani, B.; Mestric, U.; Meneghetti, M.; Calura, F.; Henry, Alaina; Zanella, A.; Trenti, M.; Boyett, K.; Morishita, T.; Calabro, A.; Glazebrook, K.; Marchesini, D.; Birrer, S.; Yang, L.; Jones, T.

In: Astrophysical Journal Letters, Vol. 940, No. 2, 53, 01.12.2022.

Research output: Contribution to journal › Letter › Research › peer-review

Harvard

Vanzella, E, Castellano, M, Bergamini, P, Treu, T, Mercurio, A, Scarlata, C, Rosati, P, Grillo, C, Acebron, A, Caminha, GB, Nonino, M, Nanayakkara, T, Roberts-Borsani, G, Bradac, M, Wang, X, Brammer, G, Strait, JB, Vulcani, B, Mestric, U, Meneghetti, M, Calura, F, Henry, A, Zanella, A, Trenti, M, Boyett, K, Morishita, T, Calabro, A, Glazebrook, K, Marchesini, D, Birrer, S, Yang, L & Jones, T 2022, 'Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*', Astrophysical Journal Letters, vol. 940, no. 2, 53. https://doi.org/10.3847/2041-8213/ac8c2d

APA

Vanzella, E., Castellano, M., Bergamini, P., Treu, T., Mercurio, A., Scarlata, C., Rosati, P., Grillo, C., Acebron, A., Caminha, G. B., Nonino, M., Nanayakkara, T., Roberts-Borsani, G., Bradac, M., Wang, X., Brammer, G., Strait, J. B., Vulcani, B., Mestric, U., ... Jones, T. (2022). Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*. Astrophysical Journal Letters, 940(2), [53]. https://doi.org/10.3847/2041-8213/ac8c2d

Vancouver

Vanzella E, Castellano M, Bergamini P, Treu T, Mercurio A, Scarlata C et al. Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*. Astrophysical Journal Letters. 2022 Dec 1;940(2). 53. https://doi.org/10.3847/2041-8213/ac8c2d

Author

Vanzella, E. ; Castellano, M. ; Bergamini, P. ; Treu, T. ; Mercurio, A. ; Scarlata, C. ; Rosati, P. ; Grillo, C. ; Acebron, A. ; Caminha, G. B. ; Nonino, M. ; Nanayakkara, T. ; Roberts-Borsani, G. ; Bradac, M. ; Wang, X. ; Brammer, G. ; Strait, James B ; Vulcani, B. ; Mestric, U. ; Meneghetti, M. ; Calura, F. ; Henry, Alaina ; Zanella, A. ; Trenti, M. ; Boyett, K. ; Morishita, T. ; Calabro, A. ; Glazebrook, K. ; Marchesini, D. ; Birrer, S. ; Yang, L. ; Jones, T. / Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*. In: Astrophysical Journal Letters. 2022 ; Vol. 940, No. 2.

Bibtex

@article{a65809e04b004cebb274c3b70f8d8548,
title = "Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*",
abstract = "We investigate the blue and optical rest-frame sizes (lambda similar or equal to 2300-4000 angstrom) of three compact star-forming regions in a galaxy at z = 4 strongly lensed (x30, x45, and x100) by the Hubble Frontier Field galaxy cluster A2744 using GLASS-ERS James Webb Space Telescope (JWST)/NIRISS imaging at 1.15 mu m, 1.50 mu m, and 2.0 mu m with a point-spread function less than or similar to 0.'' 1. In particular, the Balmer break is probed in detail for all multiply imaged sources of the system. With ages of a few tens of Myr, stellar masses in the range (0.7-4.0) x10(6) M (circle dot) and optical/ultraviolet effective radii spanning the interval 3 < R ( eff ) < 20 pc, such objects are currently the highest-redshift (spectroscopically confirmed) gravitationally bound young massive star clusters (YMCs), with stellar mass surface densities resembling those of local globular clusters. Optical (4000 angstrom, JWST-based) and ultraviolet (1600 angstrom, Hubble Space Telescope-based) sizes are fully compatible. The contribution to the ultraviolet underlying continuum emission (1600 angstrom) is similar to 30%, which decreases by a factor of 2 in the optical for two of the YMCs (similar to 4000 angstrom rest-frame), reflecting the young ages (",
keywords = "STAR-FORMING CLUMPS, GALAXIES, II., ABELL-2744, RESOLUTION, EVOLUTION",
author = "E. Vanzella and M. Castellano and P. Bergamini and T. Treu and A. Mercurio and C. Scarlata and P. Rosati and C. Grillo and A. Acebron and Caminha, {G. B.} and M. Nonino and T. Nanayakkara and G. Roberts-Borsani and M. Bradac and X. Wang and G. Brammer and Strait, {James B} and B. Vulcani and U. Mestric and M. Meneghetti and F. Calura and Alaina Henry and A. Zanella and M. Trenti and K. Boyett and T. Morishita and A. Calabro and K. Glazebrook and D. Marchesini and S. Birrer and L. Yang and T. Jones",
year = "2022",
month = dec,
day = "1",
doi = "10.3847/2041-8213/ac8c2d",
language = "English",
volume = "940",
journal = "The Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing",
number = "2",

}

RIS

TY - JOUR

T1 - Early Results from GLASS-JWST. VII. Evidence for Lensed, Gravitationally Bound Protoglobular Clusters at z=4 in the Hubble Frontier Field A2744*

AU - Vanzella, E.

AU - Castellano, M.

AU - Bergamini, P.

AU - Treu, T.

AU - Mercurio, A.

AU - Scarlata, C.

AU - Rosati, P.

AU - Grillo, C.

AU - Acebron, A.

AU - Caminha, G. B.

AU - Nonino, M.

AU - Nanayakkara, T.

AU - Roberts-Borsani, G.

AU - Bradac, M.

AU - Wang, X.

AU - Brammer, G.

AU - Strait, James B

AU - Vulcani, B.

AU - Mestric, U.

AU - Meneghetti, M.

AU - Calura, F.

AU - Henry, Alaina

AU - Zanella, A.

AU - Trenti, M.

AU - Boyett, K.

AU - Morishita, T.

AU - Calabro, A.

AU - Glazebrook, K.

AU - Marchesini, D.

AU - Birrer, S.

AU - Yang, L.

AU - Jones, T.

PY - 2022/12/1

Y1 - 2022/12/1

N2 - We investigate the blue and optical rest-frame sizes (lambda similar or equal to 2300-4000 angstrom) of three compact star-forming regions in a galaxy at z = 4 strongly lensed (x30, x45, and x100) by the Hubble Frontier Field galaxy cluster A2744 using GLASS-ERS James Webb Space Telescope (JWST)/NIRISS imaging at 1.15 mu m, 1.50 mu m, and 2.0 mu m with a point-spread function less than or similar to 0.'' 1. In particular, the Balmer break is probed in detail for all multiply imaged sources of the system. With ages of a few tens of Myr, stellar masses in the range (0.7-4.0) x10(6) M (circle dot) and optical/ultraviolet effective radii spanning the interval 3 < R ( eff ) < 20 pc, such objects are currently the highest-redshift (spectroscopically confirmed) gravitationally bound young massive star clusters (YMCs), with stellar mass surface densities resembling those of local globular clusters. Optical (4000 angstrom, JWST-based) and ultraviolet (1600 angstrom, Hubble Space Telescope-based) sizes are fully compatible. The contribution to the ultraviolet underlying continuum emission (1600 angstrom) is similar to 30%, which decreases by a factor of 2 in the optical for two of the YMCs (similar to 4000 angstrom rest-frame), reflecting the young ages (

AB - We investigate the blue and optical rest-frame sizes (lambda similar or equal to 2300-4000 angstrom) of three compact star-forming regions in a galaxy at z = 4 strongly lensed (x30, x45, and x100) by the Hubble Frontier Field galaxy cluster A2744 using GLASS-ERS James Webb Space Telescope (JWST)/NIRISS imaging at 1.15 mu m, 1.50 mu m, and 2.0 mu m with a point-spread function less than or similar to 0.'' 1. In particular, the Balmer break is probed in detail for all multiply imaged sources of the system. With ages of a few tens of Myr, stellar masses in the range (0.7-4.0) x10(6) M (circle dot) and optical/ultraviolet effective radii spanning the interval 3 < R ( eff ) < 20 pc, such objects are currently the highest-redshift (spectroscopically confirmed) gravitationally bound young massive star clusters (YMCs), with stellar mass surface densities resembling those of local globular clusters. Optical (4000 angstrom, JWST-based) and ultraviolet (1600 angstrom, Hubble Space Telescope-based) sizes are fully compatible. The contribution to the ultraviolet underlying continuum emission (1600 angstrom) is similar to 30%, which decreases by a factor of 2 in the optical for two of the YMCs (similar to 4000 angstrom rest-frame), reflecting the young ages (

KW - STAR-FORMING CLUMPS

KW - GALAXIES

KW - II.

KW - ABELL-2744

KW - RESOLUTION

KW - EVOLUTION

U2 - 10.3847/2041-8213/ac8c2d

DO - 10.3847/2041-8213/ac8c2d

M3 - Letter

VL - 940

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - 53

ER -

ID: 332119702