{
  "abstract": "We describe ongoing efforts of high-redshift transient searches using multi-epoch NIRCam imaging (F200W+F444W) and NIRSpec MSA/PRISM spectroscopy from the NEXUS JWST multi-cycle Treasury program targeting the north ecliptic pole region. The transient search area covers $\\sim 61.5\\,{\\rm arcmin^2}$ between the reference epoch and each subsequent NEXUS-Deep epoch at a cadence of $\\sim2$~months. In the first year of observations from NEXUS, we detect 68 robust transients, with the host photometric redshift distribution declining rapidly at $z>2$ but extending to $z_{\\rm phot}\\approx 6$. In addition, we obtained secure spectroscopic redshifts for 37 transients ($\\sim54\\%$) from NIRSpec/PRISM and NIRCam/WFSS, with seventeen at $1 < z < 2$, eight at $2 < z < 3$, two at $3 < z < 4$, and one tentative host association at z = 6.151. Overall, the NEXUS program recovers observed supernova (SN) rates broadly consistent with other SN search programs with JWST. While NEXUS achieves the highest transient detection efficiency, 6.6 SNe per imaging hr ($2.6\\times$ COSMOS-SN and $26\\times$ JADES-SN), the limited filter coverage (F200W+F444W only) limits robust identification and classification of high-$z$ SNe for deep spectroscopic follow-up. We describe the details of the data reduction and transient detection pipeline, and report the Year-1 transient sample along with their light curves, available MSA spectroscopy, host association, and the raw detection rate. We also describe and release a new PSF photometry package that properly accounts for correlated pixel noise from combining drizzled images.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.06985",
  "author_total": 13,
  "authors": [
    {
      "name": "Ming-Yang Zhuang"
    },
    {
      "name": "Lei Hu"
    },
    {
      "name": "Justin D. R. Pierel"
    },
    {
      "name": "Zhiwei Pan"
    },
    {
      "name": "Yue Shen"
    },
    {
      "name": "Adam J. Burgasser"
    },
    {
      "name": "Xiaohui Fan"
    },
    {
      "name": "Luis C. Ho"
    },
    {
      "name": "Junyao Li"
    },
    {
      "name": "Alice E. Shapley"
    },
    {
      "name": "Zachary Stone"
    },
    {
      "name": "Feige Wang"
    },
    {
      "name": "Lifan Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bwc1zdpxzr06a.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.06985",
  "fulltext_url": null,
  "id": "bwc1zdpxzr06a",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.06985",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "openalex",
      "3103|Gamma-ray bursts and supernovae"
    ]
  ],
  "openalex": "W7212006741",
  "pdf_url": "https://arxiv.org/pdf/2609.06985",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bwc1zdpxzr06a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2609.06985",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.06985"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "NEXUS: Transient Searches and First Results from Year One Observations",
  "title_text": "NEXUS: Transient Searches and First Results from Year One Observations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/bwc1zdpxzr06a",
  "venue": "arXiv",
  "versions": []
}