Pith Number

pith:IFFL7ARW

pith:2026:IFFL7ARW2R3ALFYYHHRV3P4YY2

not attested not anchored not stored refs resolved

The Galaxy Luminosity Functions in ASTRID: Predictions for LSST

Fatemeh Hafezianzadeh, Patrick LaChance, Paul Rogozenski, Rachel Mandelbaum, Rupert A. C. Croft, Simeon Bird, Tianqing Zhang, Tiziana Di Matteo, Yihao Zhou

Calibrated dust attenuation in a hydrodynamical simulation reproduces observed galaxy luminosity functions from z=0 to z=1.5

arxiv:2605.13843 v1 · 2026-05-13 · astro-ph.GA · astro-ph.CO

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\usepackage{pith}
\pithnumber{IFFL7ARW2R3ALFYYHHRV3P4YY2}

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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

We find that the attenuated luminosity functions reproduce observed galaxy statistics across multiple wavelengths and redshifts. Using this calibrated framework, we construct LSST-ready mock photometric catalogs over 0 <= z <= 2 in steps of Delta z = 0.1, containing ~378 million galaxies.

C2weakest assumption

The dust attenuation prescription in which optical depth scales with metal surface density, calibrated only at z=0 using SDSS luminosity functions, remains accurate when applied at higher redshifts up to z=1.5 and to the LSST ugrizy bands.

C3one line summary

ASTRID simulation with dust model calibrated to SDSS at z=0 produces validated luminosity functions and LSST-ready mock catalogs of 378 million galaxies with predicted number counts in ugrizy bands from z=0 to 2.

References

59 extracted · 59 resolved · 8 Pith anchors

[1] Acero Cuellar, T., Acosta, E., Adair, C. L., et al. 2026, arXiv e-prints, arXiv 2026

[2] 2025, Monthly Notices of the Royal Astronomical Society, 544, 3799 2025

[3] J., Groves, B., Kauffmann, G., & Heckman, T 2006 · doi:10.1111/j.1365-2966.2006.11081.x

[4] K., Glazebrook, K., Brinkmann, J., et al 2004

[5] 2022, MNRAS, 512, 3703, doi: 10.1093/mnras/stac648 Bogd´ an,´A., Goulding, A 2022 · doi:10.1093/mnras/stac648

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T02:44:09.410873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

414abf8236d47605971839e35dbf98c681914994f3c21bd9f319c8a83642c9bd

Aliases

arxiv: 2605.13843 · arxiv_version: 2605.13843v1 · doi: 10.48550/arxiv.2605.13843 · pith_short_12: IFFL7ARW2R3A · pith_short_16: IFFL7ARW2R3ALFYY · pith_short_8: IFFL7ARW

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/IFFL7ARW2R3ALFYYHHRV3P4YY2 \
  | 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: 414abf8236d47605971839e35dbf98c681914994f3c21bd9f319c8a83642c9bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "894675315626fcdefb34d1b164b5952c3cecd92231be899e49c0b6a26d75c314",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-13T17:59:26Z",
    "title_canon_sha256": "8266e2871d579537bd34c4ff62fc8e992ae473459bb980a365360bcf05d6e540"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13843",
    "kind": "arxiv",
    "version": 1
  }
}