Water vapor in the inner 25 au of a young disk around a low-mass protostar

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Water vapor in the inner 25 au of a young disk around a low-mass protostar. / Jørgensen, Jes K.; Van Dishoeck, Ewine F.

I: Astrophysical Journal Letters, Bind 710, Nr. 1 PART 2, 01.01.2010, s. L72-L76.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Jørgensen, JK & Van Dishoeck, EF 2010, 'Water vapor in the inner 25 au of a young disk around a low-mass protostar', Astrophysical Journal Letters, bind 710, nr. 1 PART 2, s. L72-L76. https://doi.org/10.1088/2041-8205/710/1/L72

APA

Jørgensen, J. K., & Van Dishoeck, E. F. (2010). Water vapor in the inner 25 au of a young disk around a low-mass protostar. Astrophysical Journal Letters, 710(1 PART 2), L72-L76. https://doi.org/10.1088/2041-8205/710/1/L72

Vancouver

Jørgensen JK, Van Dishoeck EF. Water vapor in the inner 25 au of a young disk around a low-mass protostar. Astrophysical Journal Letters. 2010 jan. 1;710(1 PART 2):L72-L76. https://doi.org/10.1088/2041-8205/710/1/L72

Author

Jørgensen, Jes K. ; Van Dishoeck, Ewine F. / Water vapor in the inner 25 au of a young disk around a low-mass protostar. I: Astrophysical Journal Letters. 2010 ; Bind 710, Nr. 1 PART 2. s. L72-L76.

Bibtex

@article{bdfc5759bc16410881d5f180cdad6c85,
title = "Water vapor in the inner 25 au of a young disk around a low-mass protostar",
abstract = "Water is one of the key molecules in the physical and chemical evolution of star- and planet-forming regions. We here report the first spatially resolved observation of thermal emission of (an isotopologue of) water with the Plateau de Bure Interferometer toward the deeply embedded Class 0 protostar NGC 1333-IRAS4B. The observations of the H18 2O 3 1,3-22,0 transition at 203.4 GHz resolve the emission of water toward this source with an extent of about 02 corresponding to the inner 25 AU (radius). The H18 2O emission reveals a tentative velocity gradient perpendicular to the extent of the protostellar outflow/jet probed by observations of CO rotational transitions and water masers. The line is narrow, ≈ 1kms-1 (FWHM), significantly less than what would be expected for emission from an infalling envelope or accretion shock, but consistent with emission from a disk seen at a low inclination angle. The water column density inferred from these data suggests that the water emitting gas is a thin warm layer containing about 25 M Earth of material, 0.03% of the total disk mass traced by continuum observations.",
keywords = "Astrochemistry, ISM: abundances, ISM: individual objects (NGC 1333-IRAS4B), Protoplanetary Disks, Stars: formation",
author = "J{\o}rgensen, {Jes K.} and {Van Dishoeck}, {Ewine F.}",
year = "2010",
month = jan,
day = "1",
doi = "10.1088/2041-8205/710/1/L72",
language = "English",
volume = "710",
pages = "L72--L76",
journal = "The Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing",
number = "1 PART 2",

}

RIS

TY - JOUR

T1 - Water vapor in the inner 25 au of a young disk around a low-mass protostar

AU - Jørgensen, Jes K.

AU - Van Dishoeck, Ewine F.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Water is one of the key molecules in the physical and chemical evolution of star- and planet-forming regions. We here report the first spatially resolved observation of thermal emission of (an isotopologue of) water with the Plateau de Bure Interferometer toward the deeply embedded Class 0 protostar NGC 1333-IRAS4B. The observations of the H18 2O 3 1,3-22,0 transition at 203.4 GHz resolve the emission of water toward this source with an extent of about 02 corresponding to the inner 25 AU (radius). The H18 2O emission reveals a tentative velocity gradient perpendicular to the extent of the protostellar outflow/jet probed by observations of CO rotational transitions and water masers. The line is narrow, ≈ 1kms-1 (FWHM), significantly less than what would be expected for emission from an infalling envelope or accretion shock, but consistent with emission from a disk seen at a low inclination angle. The water column density inferred from these data suggests that the water emitting gas is a thin warm layer containing about 25 M Earth of material, 0.03% of the total disk mass traced by continuum observations.

AB - Water is one of the key molecules in the physical and chemical evolution of star- and planet-forming regions. We here report the first spatially resolved observation of thermal emission of (an isotopologue of) water with the Plateau de Bure Interferometer toward the deeply embedded Class 0 protostar NGC 1333-IRAS4B. The observations of the H18 2O 3 1,3-22,0 transition at 203.4 GHz resolve the emission of water toward this source with an extent of about 02 corresponding to the inner 25 AU (radius). The H18 2O emission reveals a tentative velocity gradient perpendicular to the extent of the protostellar outflow/jet probed by observations of CO rotational transitions and water masers. The line is narrow, ≈ 1kms-1 (FWHM), significantly less than what would be expected for emission from an infalling envelope or accretion shock, but consistent with emission from a disk seen at a low inclination angle. The water column density inferred from these data suggests that the water emitting gas is a thin warm layer containing about 25 M Earth of material, 0.03% of the total disk mass traced by continuum observations.

KW - Astrochemistry

KW - ISM: abundances

KW - ISM: individual objects (NGC 1333-IRAS4B)

KW - Protoplanetary Disks

KW - Stars: formation

UR - http://www.scopus.com/inward/record.url?scp=77749342972&partnerID=8YFLogxK

U2 - 10.1088/2041-8205/710/1/L72

DO - 10.1088/2041-8205/710/1/L72

M3 - Journal article

AN - SCOPUS:77749342972

VL - 710

SP - L72-L76

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

SN - 2041-8205

IS - 1 PART 2

ER -

ID: 229737556