{
  "abstract": "We characterize kinematic processes in the G012.80 protocluster. We primarily focused on the N 2 H + (1-0) emission to trace the dense and cold gas. Additionally, we used complementary lines such as DCN(3-2), H41α, C 18 O(2-1), and SiO(5-4), as well as continuum maps. We performed a N 2 H + hyperfine spectral line fitting to analyze multiple velocity components and extract spectral parameters. We estimated velocity gradients, column densities, and line-mass profiles for the two main filaments in G012, which we named R1 and R2. The line-mass profiles follow λ(ω) = 5660 M ⊙ pc -1 (ω/pc) 0.30 for R1 and λ(ω) = 6943 M ⊙ pc -1 (ω/pc) 0.20 for R2. This is much larger than profiles of typical low-mass filaments. R1 and R2 show disparate position-velocity (PV) features. R1 exhibits a transverse velocity gradient of 10.4 km s -1 pc -1 and a few dense cores. This velocity gradient is interpreted with a simple rotation toy model when combined with the line-mass profile, and it corresponds to a rotational timescale of ∼0.1 Myr. In contrast, R2 exhibits compact velocity structures (∆V < 2 km s -1 ), likely due to collapse, as evidenced by the comparatively large number of massive cores and protostellar outflows. R2 is forming prestellar and protostellar cores at a rate of ∼ 55.3 M ⊙ Myr -1 , with an efficiency similar to the Orion integral shaped filament (ISF). The R1 filament, in contrast, lacks protostellar cores and only contains a few prestellar cores, resulting in an estimated star formation rate of ∼4.2 M ⊙ Myr -1 , which is lower by more than an order of magnitude than that of R2. Combining gas kinematics, core incidence, and the line-mass profiles, we suggest that R1 is younger and still rotates, while R2 has evolved to collapse with a higher star formation rate. G012 thus hosts filaments at different evolutionary stages.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 23,
  "authors": [
    {
      "name": "J Salinas"
    },
    {
      "name": "A M Stutz"
    },
    {
      "name": "R H Álvarez-Gutiérrez"
    },
    {
      "name": "N A Sandoval-Garrido"
    },
    {
      "name": "F Louvet"
    },
    {
      "name": "R Galván-Madrid"
    },
    {
      "name": "F Motte"
    },
    {
      "name": "M Armante"
    },
    {
      "name": "T Csengeri"
    },
    {
      "name": "J Braine"
    },
    {
      "name": "A Ginsburg"
    },
    {
      "name": "M Valeille-Manet"
    },
    {
      "name": "L Bronfman"
    },
    {
      "name": "P Sanhueza"
    },
    {
      "name": "D Díaz"
    },
    {
      "name": "G Busquet"
    },
    {
      "name": "A Koley"
    },
    {
      "name": "M Bonfand"
    },
    {
      "name": "M Fernández-López"
    },
    {
      "name": "A Gusdorf"
    },
    {
      "name": "N Castro-Toledo"
    },
    {
      "name": "R Veyry"
    },
    {
      "name": "G Bernal-Mesina"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cy11ee9cyzb9s.bib",
  "cited_by": 0,
  "doi": "10.1051/0004-6361/202557551",
  "fulltext_url": null,
  "id": "cy11ee9cyzb9s",
  "issns": [
    "0004-6361",
    "1432-0746"
  ],
  "landing_url": "https://hal.science/hal-05759483v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.sdu"
    ],
    [
      "hal",
      "1.sdu.astr"
    ],
    [
      "hal",
      "2.sdu.astr.ga"
    ],
    [
      "openalex",
      "3103|Astrophysics and Star Formation Studies"
    ]
  ],
  "openalex": "W4414968899",
  "pdf_url": "https://hal.science/hal-05759483/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": "EDP Sciences",
  "ris": "https://research.draconitic.com/paper/cy11ee9cyzb9s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:37Z",
      "native_id": "hal-05759483",
      "source": "hal",
      "url": "https://hal.science/hal-05759483v1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "hal:2.sdu.astr.ga",
      "subfield": "galaxies"
    },
    {
      "field": "earth",
      "origin": "hal:0.sdu",
      "subfield": "general"
    }
  ],
  "title": "ALMA-IMF",
  "title_text": "ALMA-IMF",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:37Z",
  "url": "https://research.draconitic.com/paper/cy11ee9cyzb9s",
  "venue": "Astronomy & Astrophysics - A&A",
  "versions": []
}