Metraipolis › archive › dc_d09d004fa862

Nascent Embedded-protostar Survey in Taurus (NEST) II: Measuring Dust Mass, Disk Size, and Gas Mass — arXiv:2608.09896

Source: arXiv (en)
Original: https://arxiv.org/abs/2608.09896
License (as archived): CC0-1.0
Archived: 2026-10-19T09:31:45.204Z
SHA-256 of the archived text: c28e4d772fdd7787dbf16c3357e5a5956bfecaa7e83944597d2e74efef335432
Stable URL of this page: https://metraipolis.com/documento/dc_d09d004fa862

How to cite

Nascent Embedded-protostar Survey in Taurus (NEST) II: Measuring Dust Mass, Disk Size, and Gas Mass — arXiv:2608.09896 — arXiv (en), https://arxiv.org/abs/2608.09896 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_d09d004fa862 (Metraipolis archive dc_d09d004fa862, sha256 c28e4d772fdd7787dbf16c3357e5a5956bfecaa7e83944597d2e74efef335432)

BibTeX

@misc{dcd09d004fa862,
  title = {Nascent Embedded-protostar Survey in Taurus (NEST) II: Measuring Dust Mass, Disk Size, and Gas Mass — arXiv:2608.09896},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2608.09896},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_d09d004fa862; sha256 c28e4d772fdd7787dbf16c3357e5a5956bfecaa7e83944597d2e74efef335432},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2608.09896. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Envelope-embedded protostellar disks represent the earliest stage of protoplanetary disk evolution, but their masses and sizes are difficult to measure because disk emission is entangled with the envelope. We analyze 26 protostellar disk systems in Taurus using ALMA Band 7 (345 GHz; ~0.3'') and VLA Ka-band (33 GHz; ~0.2'') continuum observations, together with molecular-line data to constrain disk gas masses. At 345 GHz, the median flux density, dust mass, and radius are 71 mJy, 5.5 M_Mearth, and 28 AU, with 68% ranges of 54-107 mJy, 3.9-9.4 M_Mearth, and 25-39 AU. At 33 GHz, the corresponding medians are 0.43 mJy, 39 M_Mearth, and 32 AU, with ranges of 0.41-0.80 mJy, 34-52 M_Mearth, and 29-33 AU. Taurus Class I disks are fainter and less massive than those in Orion, comparable to Perseus Class I disks but fainter than Perseus Class 0 disks, and brighter and more massive than those in Ophiuchus. Within Taurus, Class 0/I disks are brighter than Class II disks at both frequencies, although their inferred dust masses are comparable at 345 GHz and slightly higher at 33 GHz. Radiative-transfer modeling of CO isotopologue emission yields a median gas mass of 6.7 x 10^-4 M_Msun. The resulting CO-inferred gas-to-dust ratios span a broad range, with a mean of 147 +/- 75, a median of 26, and a 16th-84th percentile range of 8-147. This distribution overlaps the Taurus Class II population at the low end and ISM-like or higher values, including the AGE-PRO Ophiuchus Class 0/I population, at the high end.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-08-11 in astro-ph.EP).
Categorie arXiv: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP).
Pagina del lavoro: https://arxiv.org/abs/2608.09896 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-19T09:29:15.828Z dalla pagina https://arxiv.org/catchup/astro-ph.EP/2026-08-11?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).