Pith Number

pith:XQQCU5DU

pith:2026:XQQCU5DUF34UGNCHZOQWKOP6LO

not attested not anchored not stored refs resolved

The HAges Catalog: Stellar Ages for High Priority HWO Target Stars

Austin T. Ware, Katelyn Ruppert, Patrick A. Young

A catalog compiles published stellar ages for 659 high-priority Habitable Worlds Observatory targets using asteroseismology and gyrochronology.

arxiv:2605.12647 v1 · 2026-05-12 · astro-ph.SR · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XQQCU5DUF34UGNCHZOQWKOP6LO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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

We present a catalog of stellar ages for Tier 1 and Tier 2 targets in the HWO Target Stars and Systems (TSS) sub-working group's TSS25 list, compiling published literature ages derived from high-precision methods. The sample comprises 659 stars likely to be observed by HWO, independent of the final mission architecture. This initial catalog focuses on asteroseismology and gyrochronology, which can achieve ~20% precision for the majority of these stars.

C2weakest assumption

That the ages drawn from published literature using asteroseismology and gyrochronology are sufficiently accurate and unbiased for the selected HWO target stars, with uncertainties low enough (~20% or ≲1 Gyr) to discern evolutionary trends in exoplanet atmospheres.

C3one line summary

The HAges catalog compiles published asteroseismic and gyrochronological ages for 659 HWO target stars, finding that only ~5% have asteroseismic ages and ~20% have gyrochronal ages.

References

134 extracted · 134 resolved · 2 Pith anchors

[1] 2015, MNRAS, 450, 1787, doi: 10.1093/mnras/stv423 2015 · doi:10.1093/mnras/stv423

[2] Angus, R., Beane, A., Price-Whelan, A. M., et al. 2020, AJ, 160, 90, doi: 10.3847/1538-3881/ab91b2 Astropy Collaboration, Robitaille, T. P., Tollerud, E. J., et al. 2013, A&A, 558, A33, doi: 10.1051/0 2020 · doi:10.3847/1538-3881/ab91b2

[3] 1996, ApJL, 457, L99, doi: 10.1086/309891 1996 · doi:10.1086/309891

[4] Barnes, S. A. 2007, ApJ, 669, 1167, doi: 10.1086/519295 2007 · doi:10.1086/519295

[5] 2020, A&A, 635, A26, doi: 10.1051/0004-6361/201935565 2020 · doi:10.1051/0004-6361/201935565

Receipt and verification

First computed	2026-05-18T03:09:59.826358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc202a74742ef9433447cba16539fe5ba3ae0ea2929209feb5350340d79cb9f0

Aliases

arxiv: 2605.12647 · arxiv_version: 2605.12647v1 · doi: 10.48550/arxiv.2605.12647 · pith_short_12: XQQCU5DUF34U · pith_short_16: XQQCU5DUF34UGNCH · pith_short_8: XQQCU5DU

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/XQQCU5DUF34UGNCHZOQWKOP6LO \
  | 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: bc202a74742ef9433447cba16539fe5ba3ae0ea2929209feb5350340d79cb9f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15bbab1dab8eccc7c7b884c891d17baf83a52f57590524fee5afd2ed214f7f38",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-12T18:44:13Z",
    "title_canon_sha256": "62190797335e31834b2124a907f7b2ce4e91c98fae575a852e84e29a196ae6ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12647",
    "kind": "arxiv",
    "version": 1
  }
}