Pith Number

pith:TNQM2F4Z

pith:2026:TNQM2F4Z5BYJJDWNA7B5XHEXRV

not attested not anchored not stored refs resolved

Diversity in Evolutionary Status and Magnetic Activity among Solar-Type Twin Detached Eclipsing Binaries

Ahmet Dervi\c{s}o\u{g}lu, Boonrucksar Soonthornthum, David Mkrtichian, Er-Gang Zhao, Fang-Bin Meng, Jia Zhang, Lin-Jia Li, Li-Ying Zhu, Nian-Ping Liu, Sergey Zvyagintsev, Sheng-Bang Qian, Somsawat Rattanasoon

Four solar-type twin binaries with nearly equal masses show different evolutionary stages and magnetic activity levels.

arxiv:2605.13212 v1 · 2026-05-13 · astro-ph.SR

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\pithnumber{TNQM2F4Z5BYJJDWNA7B5XHEXRV}

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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

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Claims

C1strongest claim

The results reveal significant differences in evolutionary stages and magnetic activity despite their nearly equal masses. Both components of KIC 8957954 and KIC 8302455 are on the main sequence; KIC 10593759 has evolved to the subgiant stage; and in TIC 207398432, the secondary has entered the red giant phase. Stronger magnetic activity is observed in KIC 10593759 and TIC 207398432, characterized by rapid O'Connell Effect Ratio variations, with the latter also exhibiting multiple superflare events.

C2weakest assumption

The Wilson-Devinney light-curve modeling combined with fd3 spectral disentangling and broadening-function radial velocities yields unbiased absolute parameters without significant systematic errors from spot modeling, third-light contamination, or assumptions about limb darkening and gravity darkening.

C3one line summary

Four solar-type twin binaries show evolutionary diversity from main-sequence to red-giant stages with varying magnetic activity, including possible triple-system signatures in one case.

References

53 extracted · 53 resolved · 4 Pith anchors

[1] 2000, MNRAS, 318, 798, doi: 10.1046/j.1365-8711.2000.03834.x 2000 · doi:10.1046/j.1365-8711.2000.03333.x

[2] M., Spurzem, R., & Lee, M 2002 · doi:10.1046/j.1365-8711.2002.05775.x

[3] 2006, A&A, 446, 1129, doi: 10.1051/0004-6361:20053213 2006 · doi:10.1051/0004-6361:20053213

[4] 2019, MNRAS, 486, 2075, doi: 10.1093/mnras/stz549 2019 · doi:10.1093/mnras/stz549

[5] A&A , keywords = 2014 · doi:10.1051/0004-6361/201423945

Receipt and verification

First computed	2026-05-18T03:08:48.523132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b60cd1799e870948ecd07c3db9c978d555d01ae02f8b2aa2f7fbcd92a0aab34

Aliases

arxiv: 2605.13212 · arxiv_version: 2605.13212v1 · doi: 10.48550/arxiv.2605.13212 · pith_short_12: TNQM2F4Z5BYJ · pith_short_16: TNQM2F4Z5BYJJDWN · pith_short_8: TNQM2F4Z

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TNQM2F4Z5BYJJDWNA7B5XHEXRV \
  | 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: 9b60cd1799e870948ecd07c3db9c978d555d01ae02f8b2aa2f7fbcd92a0aab34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13b616554997256623202dea59c80b70326763dad055bd43a33cc12198b6bb6c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-13T09:06:10Z",
    "title_canon_sha256": "3ecd66b5a074242e694c86d25bf8adbd85d7898994d94156a281e9a849779254"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13212",
    "kind": "arxiv",
    "version": 1
  }
}