RELICS: A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster

Rachel Paterno-Mahler, Keren Sharon, Dan Coe, Guillaume Mahler, Catherine Cerny, Traci L. Johnson, Tim Schrabback, Felipe Andrade-Santos, Roberto J. Avila, Maruša Bradač, Larry D. Bradley, Daniela Carrasco, Nicole G. Czakon, William A. Dawson, Brenda Louise Frye, Austin T. Hoag, Kuang Han Huang, Christine Jones, Daniel Lam, Rachael LivermoreLorenzo Lovisari, Ramesh Mainali, Pascal A. Oesch, Sara Ogaz, Matthew Past, Avery Peterson, Russell E. Ryan, Brett Salmon, Irene Sendra-Server, Daniel P Stark, Keiichi Umetsu, Benedetta Vulcani, Adi Zitrin

Research output: Contribution to journalArticle

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Abstract

We present a lens model for the cluster SPT-CLJ0615-5746, which is the highest-redshift (z = 0.972) system in the Reionization of Lensing Clusters Survey, making it the highest-redshift cluster for which a full, strong lens model is published. We identify three systems of multiply imaged lensed galaxies, two of which we spectroscopically confirm at z = 1.358 and z = 4.013, which we use as constraints for the model. We find a foreground structure at z ∼ 0.4, which we include as a second cluster-sized halo in one of our models; however, two different statistical tests find the best-fit model consists of one cluster-sized halo combined with three individually optimized galaxy-sized halos, as well as contributions from the cluster galaxies themselves. We find the total projected mass density within r = 26.″7 (the region where the strong lensing constraints exist) to be M . If we extrapolate out to r 500, our projected mass density is consistent with the mass inferred from weak lensing and from the Sunyaev-Zel'dovich effect (M ∼ 1015 M ). This cluster is lensing a previously reported z ∼ 10 galaxy, which, if spectroscopically confirmed, will be the highest-redshift strongly lensed galaxy known.

Original languageEnglish (US)
Article number154
JournalAstrophysical Journal
Volume863
Issue number2
DOIs
StatePublished - Aug 20 2018

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lenses
galaxies
halos
statistical tests

Keywords

  • clusters: individual (SPT-CLJ0615-5746)
  • gravitational lensing: strong

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Paterno-Mahler, R., Sharon, K., Coe, D., Mahler, G., Cerny, C., Johnson, T. L., ... Zitrin, A. (2018). RELICS: A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster. Astrophysical Journal, 863(2), [154]. https://doi.org/10.3847/1538-4357/aad239

RELICS : A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster. / Paterno-Mahler, Rachel; Sharon, Keren; Coe, Dan; Mahler, Guillaume; Cerny, Catherine; Johnson, Traci L.; Schrabback, Tim; Andrade-Santos, Felipe; Avila, Roberto J.; Bradač, Maruša; Bradley, Larry D.; Carrasco, Daniela; Czakon, Nicole G.; Dawson, William A.; Frye, Brenda Louise; Hoag, Austin T.; Huang, Kuang Han; Jones, Christine; Lam, Daniel; Livermore, Rachael; Lovisari, Lorenzo; Mainali, Ramesh; Oesch, Pascal A.; Ogaz, Sara; Past, Matthew; Peterson, Avery; Ryan, Russell E.; Salmon, Brett; Sendra-Server, Irene; Stark, Daniel P; Umetsu, Keiichi; Vulcani, Benedetta; Zitrin, Adi.

In: Astrophysical Journal, Vol. 863, No. 2, 154, 20.08.2018.

Research output: Contribution to journalArticle

Paterno-Mahler, R, Sharon, K, Coe, D, Mahler, G, Cerny, C, Johnson, TL, Schrabback, T, Andrade-Santos, F, Avila, RJ, Bradač, M, Bradley, LD, Carrasco, D, Czakon, NG, Dawson, WA, Frye, BL, Hoag, AT, Huang, KH, Jones, C, Lam, D, Livermore, R, Lovisari, L, Mainali, R, Oesch, PA, Ogaz, S, Past, M, Peterson, A, Ryan, RE, Salmon, B, Sendra-Server, I, Stark, DP, Umetsu, K, Vulcani, B & Zitrin, A 2018, 'RELICS: A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster', Astrophysical Journal, vol. 863, no. 2, 154. https://doi.org/10.3847/1538-4357/aad239
Paterno-Mahler R, Sharon K, Coe D, Mahler G, Cerny C, Johnson TL et al. RELICS: A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster. Astrophysical Journal. 2018 Aug 20;863(2). 154. https://doi.org/10.3847/1538-4357/aad239
Paterno-Mahler, Rachel ; Sharon, Keren ; Coe, Dan ; Mahler, Guillaume ; Cerny, Catherine ; Johnson, Traci L. ; Schrabback, Tim ; Andrade-Santos, Felipe ; Avila, Roberto J. ; Bradač, Maruša ; Bradley, Larry D. ; Carrasco, Daniela ; Czakon, Nicole G. ; Dawson, William A. ; Frye, Brenda Louise ; Hoag, Austin T. ; Huang, Kuang Han ; Jones, Christine ; Lam, Daniel ; Livermore, Rachael ; Lovisari, Lorenzo ; Mainali, Ramesh ; Oesch, Pascal A. ; Ogaz, Sara ; Past, Matthew ; Peterson, Avery ; Ryan, Russell E. ; Salmon, Brett ; Sendra-Server, Irene ; Stark, Daniel P ; Umetsu, Keiichi ; Vulcani, Benedetta ; Zitrin, Adi. / RELICS : A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster. In: Astrophysical Journal. 2018 ; Vol. 863, No. 2.
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AU - Cerny, Catherine

AU - Johnson, Traci L.

AU - Schrabback, Tim

AU - Andrade-Santos, Felipe

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