The Astrophysical Journal Letters (Jan 2024)
Discovery of an Apparent Red, High-velocity Type Ia Supernova at z = 2.9 with JWST
- J. D. R. Pierel,
- M. Engesser,
- D. A. Coulter,
- C. DeCoursey,
- M. R. Siebert,
- A. Rest,
- E. Egami,
- W. Chen,
- O. D. Fox,
- D. O. Jones,
- B. A. Joshi,
- T. J. Moriya,
- Y. Zenati,
- A. J. Bunker,
- P. A. Cargile,
- M. Curti,
- D. J. Eisenstein,
- S. Gezari,
- S. Gomez,
- M. Guolo,
- B. D. Johnson,
- M. Karmen,
- R. Maiolino,
- R. M. Quimby,
- B. Robertson,
- M. Shahbandeh,
- L. G. Strolger,
- F. Sun,
- Q. Wang,
- T. Wevers
Affiliations
- J. D. R. Pierel
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- M. Engesser
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- D. A. Coulter
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- C. DeCoursey
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- M. R. Siebert
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- A. Rest
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]; Physics and Astronomy Department, Johns Hopkins University , Baltimore, MD 21218, USA
- E. Egami
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- W. Chen
- ORCiD
- Department of Physics, Oklahoma State University , 145 Physical Sciences Bldg, Stillwater, OK 74078, USA
- O. D. Fox
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- D. O. Jones
- ORCiD
- Institute for Astronomy, University of Hawai’i , 640 N. A’ohoku Pl., Hilo, HI 96720, USA
- B. A. Joshi
- ORCiD
- Physics and Astronomy Department, Johns Hopkins University , Baltimore, MD 21218, USA
- T. J. Moriya
- ORCiD
- National Astronomical Observatory of Japan, National Institutes of Natural Sciences , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Graduate Institute for Advanced Studies , SOKENDAI, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; School of Physics and Astronomy, Monash University , Clayton, Victoria 3800, Australia
- Y. Zenati
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]; Physics and Astronomy Department, Johns Hopkins University , Baltimore, MD 21218, USA
- A. J. Bunker
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
- P. A. Cargile
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- M. Curti
- ORCiD
- European Southern Observatory , Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
- D. J. Eisenstein
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- S. Gezari
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- S. Gomez
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- M. Guolo
- ORCiD
- Physics and Astronomy Department, Johns Hopkins University , Baltimore, MD 21218, USA
- B. D. Johnson
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- M. Karmen
- ORCiD
- Physics and Astronomy Department, Johns Hopkins University , Baltimore, MD 21218, USA
- R. Maiolino
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge CB3 0HE, UK; Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UK
- R. M. Quimby
- ORCiD
- Department of Astronomy/Mount Laguna Observatory , SDSU, 5500 Campanile Drive, San Diego, CA 92812-1221, USA; Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan
- B. Robertson
- ORCiD
- Department of Astronomy & Astrophysics, University of California , Santa Cruz, 1156 High Street, Santa Cruz, CA 96054, USA
- M. Shahbandeh
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- L. G. Strolger
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- F. Sun
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- Q. Wang
- ORCiD
- Physics and Astronomy Department, Johns Hopkins University , Baltimore, MD 21218, USA
- T. Wevers
- ORCiD
- Space Telescope Science Institute , Baltimore, MD 21218, USA ; [email protected]
- DOI
- https://doi.org/10.3847/2041-8213/ad6908
- Journal volume & issue
-
Vol. 971,
no. 2
p. L32
Abstract
We present the James Webb Space Telescope (JWST) discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS+53.13485−27.82088 with a host spectroscopic redshift of 2.903 ± 0.007. The transient was identified in deep (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic follow-up with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red ( c ∼ 0.9) despite a host galaxy with low extinction and has a high Ca ii velocity (19,000 ± 2000 km s ^−1 ) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low- z Ca-rich population. Although such an object is too red for any low- z cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (≲1 σ ) with ΛCDM. Therefore unlike low- z Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high z truly diverge from their low- z counterparts and to confirm that standardized luminosities nevertheless remain constant with redshift.
Keywords
