Misaligned disks in the binary protostar IRS 43
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Misaligned disks in the binary protostar IRS 43. / Brinch, Christian; Jørgensen, Jes Kristian; Hogerheijde, Michiel R.; Nelson, Richard P.; Gressel, Oliver.
I: The Astrophysical Journal. Letters, Bind 830, Nr. 1, L16, 2016.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Misaligned disks in the binary protostar IRS 43
AU - Brinch, Christian
AU - Jørgensen, Jes Kristian
AU - Hogerheijde, Michiel R.
AU - Nelson, Richard P.
AU - Gressel, Oliver
PY - 2016
Y1 - 2016
N2 - Recent high angular resolution (∼ 0\buildrel{\prime\prime}\over{.} 2) ALMA observations of the 1.1 mm continuum and of HCO+ J = 3–2 and HCN J = 3–2 gas toward the binary protostar IRS 43 reveal multiple Keplerian disks that are significantly misaligned (\gt 60^\circ ), both in inclination and position angle and also with respect to the binary orbital plane. Each stellar component has an associated circumstellar disk while the binary is surrounded by a circumbinary disk. Together with archival VLA measurements of the stellar positions over 25 years, and assuming a circular orbit, we use our continuum measurements to determine the binary separation, a=74+/- 4 {au}, and its inclination, i\lt 30^\circ . The misalignment in this system suggests that turbulence has likely played a major role in the formation of IRS 43.
AB - Recent high angular resolution (∼ 0\buildrel{\prime\prime}\over{.} 2) ALMA observations of the 1.1 mm continuum and of HCO+ J = 3–2 and HCN J = 3–2 gas toward the binary protostar IRS 43 reveal multiple Keplerian disks that are significantly misaligned (\gt 60^\circ ), both in inclination and position angle and also with respect to the binary orbital plane. Each stellar component has an associated circumstellar disk while the binary is surrounded by a circumbinary disk. Together with archival VLA measurements of the stellar positions over 25 years, and assuming a circular orbit, we use our continuum measurements to determine the binary separation, a=74+/- 4 {au}, and its inclination, i\lt 30^\circ . The misalignment in this system suggests that turbulence has likely played a major role in the formation of IRS 43.
KW - astrometry
KW - protoplanetary disks
KW - stars: formation
U2 - 10.3847/2041-8205/830/1/L16
DO - 10.3847/2041-8205/830/1/L16
M3 - Journal article
VL - 830
JO - The Astrophysical Journal Letters
JF - The Astrophysical Journal Letters
SN - 2041-8205
IS - 1
M1 - L16
ER -
ID: 167801976