Lukas J Furtak
Reaching for the stars – JWST/NIRSpec spectroscopy of a lensed star candidate at z = 4.76
Furtak, Lukas J; Meena, Ashish K; Zackrisson, Erik; Zitrin, Adi; Brammer, Gabriel B; Coe, Dan; Diego, José M; Eldridge, Jan J; Jiménez-Teja, Yolanda; Kokorev, Vasily; Ricotti, Massimo; Welch, Brian; Windhorst, Rogier A; Abdurro’uf; Andrade-Santos, Felipe; Bhatawdekar, Rachana; Bradley, Larry D; Broadhurst, Tom; Chen, Wenlei; Conselice, Christopher J; Dayal, Pratika; Frye, Brenda L; Fujimoto, Seiji; Y-Y Hsiao, Tiger; Kelly, Patrick L; Mahler, Guillaume; Mandelker, Nir; Norman, Colin; Oguri, Masamune; Pirzkal, Norbert; Postman, Marc; Ravindranath, Swara; Vanzella, Eros; Wilkins, Stephen M
Authors
Ashish K Meena
Erik Zackrisson
Adi Zitrin
Gabriel B Brammer
Dan Coe
José M Diego
Jan J Eldridge
Yolanda Jiménez-Teja
Vasily Kokorev
Massimo Ricotti
Brian Welch
Rogier A Windhorst
Abdurro’uf
Felipe Andrade-Santos
Rachana Bhatawdekar
Larry D Bradley
Tom Broadhurst
Wenlei Chen
Christopher J Conselice
Pratika Dayal
Brenda L Frye
Seiji Fujimoto
Tiger Y-Y Hsiao
Patrick L Kelly
Dr Guillaume Mahler guillaume.mahler@durham.ac.uk
Academic Visitor
Nir Mandelker
Colin Norman
Masamune Oguri
Norbert Pirzkal
Marc Postman
Swara Ravindranath
Eros Vanzella
Stephen M Wilkins
Abstract
We present JWST/NIRSpec observations of a highly magnified star candidate at a photometric redshift of zphot ≃ 4.8, previously detected in JWST/NIRCam imaging of the strong lensing (SL) cluster MACS J0647+7015 (z = 0.591). The spectroscopic observation allows us to precisely measure the redshift of the host arc at zspec = 4.758 ± 0.004, and the star’s spectrum displays clear Lyman- and Balmer-breaks commensurate with this redshift. A fit to the spectrum suggests a B-type super-giant star of surface temperature
K with either a redder F-type companion (
K) or significant dust attenuation (AV ≃ 0.82) along the line of sight. We also investigate the possibility that this object is a magnified young globular cluster rather than a single star. We show that the spectrum is in principle consistent with a star cluster, which could also accommodate the lack of flux variability between the two epochs. However, the lack of a counter image and the strong upper limit on the size of the object from lensing symmetry, r ≲ 0.5 pc, could indicate that this scenario is somewhat less likely – albeit not completely ruled out by the current data. The presented spectrum seen at a time when the Universe was only ∼1.2 Gyr old showcases the ability of JWST to study early stars through extreme lensing.
Citation
Furtak, L. J., Meena, A. K., Zackrisson, E., Zitrin, A., Brammer, G. B., Coe, D., …Wilkins, S. M. (2024). Reaching for the stars – JWST/NIRSpec spectroscopy of a lensed star candidate at z = 4.76. Monthly Notices of the Royal Astronomical Society: Letters, 527(1), L7–L13. https://doi.org/10.1093/mnrasl/slad135
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 20, 2023 |
Online Publication Date | Sep 22, 2023 |
Publication Date | 2024-01 |
Deposit Date | Feb 6, 2024 |
Publicly Available Date | Feb 6, 2024 |
Journal | Monthly Notices of the Royal Astronomical Society: Letters |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 527 |
Issue | 1 |
Pages | L7–L13 |
DOI | https://doi.org/10.1093/mnrasl/slad135 |
Public URL | https://durham-repository.worktribe.com/output/2227840 |
Files
Published Journal Article
(1.7 Mb)
PDF
Licence
http://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
Copyright Statement
© 2023 The Author(s).
Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium,
provided the original work is properly cited.
You might also like
JWST Reveals a Possible z ∼ 11 Galaxy Merger in Triply Lensed MACS0647–JD
(2023)
Journal Article
Two Lensed Star Candidates at z ≃ 4.8 behind the Galaxy Cluster MACS J0647.7+7015
(2023)
Journal Article
MIDIS: Unveiling the Role of Strong Hα Emitters During the Epoch of Reionization with JWST
(2024)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search