Pith Number

pith:LNWTVZTP

pith:2026:LNWTVZTPOE4YBQJQIC4OMW4UVL

not attested not anchored not stored refs resolved

Discovery of the first outbursting hot subdwarf binary: ZTF J0007+4804

A. Brown, A. Kosakowski, A. Picco, C. W. Bradshaw, E. Stringer, I. Jackson, K. Deshmukh, M. Dorsch, S. Awiphan, S. Poshyachinda, T. Kupfer, T. Maccarone, V.S. Dhillon

ZTF J000742.62+480414.51 is the first hot subdwarf-white dwarf binary to show dwarf nova outbursts.

arxiv:2605.03010 v1 · 2026-05-04 · astro-ph.SR

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LNWTVZTPOE4YBQJQIC4OMW4UVL}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

ZTF J000742.62+480414.51 consists of an accreting 0.48±0.01 M⊙ white dwarf with a 0.42±0.01 M⊙ B-type hot subdwarf acting as a donor. The system exhibits SU UMa type dwarf nova outbursts with a recurrence time of P_out ≈ 9 days.

C2weakest assumption

The assumption that the observed brightening events are produced by an accretion disk around the white dwarf and that the light-curve and spectroscopic modeling correctly yields the component masses and effective temperatures without large systematic biases from disk contributions or distance uncertainties.

C3one line summary

ZTF J0007+4804 is the first known hot subdwarf-white dwarf binary that exhibits SU UMa-type dwarf nova outbursts with a 108.72-minute orbital period.

References

91 extracted · 91 resolved · 0 Pith anchors

[1] Astropy Collaboration, Price-Whelan, A. M., & et al. 2018, AJ, 156, 123 Astropy Collaboration, Robitaille, T. P., Tollerud, E. J., et al. 2013, A&A, 558, A33 2018

[2] Barlow, B. N., Corcoran, K. A., Parker, I. M., et al. 2022, ApJ, 928, 20 2022

[3] Bauer, E. B. & Kupfer, T. 2021, ApJ, 922, 245 2021

[4] Bellm, E. C. & et al. 2019, PASP, 131, 018002 2019

[5] 2017, ApJS, 230, 24 2017

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-19T16:10:38.175187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b6d3ae66f713980c13040b8e65b94aaf6111d7aee11b6ebeece0c969f3495e6

Aliases

arxiv: 2605.03010 · arxiv_version: 2605.03010v1 · doi: 10.48550/arxiv.2605.03010 · pith_short_12: LNWTVZTPOE4Y · pith_short_16: LNWTVZTPOE4YBQJQ · pith_short_8: LNWTVZTP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LNWTVZTPOE4YBQJQIC4OMW4UVL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5b6d3ae66f713980c13040b8e65b94aaf6111d7aee11b6ebeece0c969f3495e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9870ec6642d03778eecf20e5d56560a3afd5b6d3890aa9230f76e6340af41a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-04T18:00:06Z",
    "title_canon_sha256": "7eff5c02dbf597a43defd55385abe51c30036a84cdcf725066c7410efff39e81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.03010",
    "kind": "arxiv",
    "version": 1
  }
}