STAR FORMATION NEWSLETTER#306 25 - 34±^\P (ToL)Paper lists

25. A 100 au-Wide Bipolar Rotating Shell Emanating From the HH 212 Protostellar Disk:A Disk Wind?
26. Vortex survival in 3D self-gravitating accretion discs
27. Detection of 40–48 GHz dust continuum linear polarization towards the Class 0
young stellar object IRAS 16293−2422
28. The straight and isolated G350.54+0.69 filament: density profile and star formation
content
29. An Isothermal Outflow in High-mass Star-forming Region G240.31+0.07
30. A search for transiting planets in the β Pictoris system
31. Efficient radiative transfer techniques in hydrodynamic simulations
32. M Dwarf Exoplanet Surface Density Distribution: A Log-Normal Fit from 0.07-400
AU
33. Tracing the cold and warm physico-chemical structure of deeply embedded
protostars: IRAS 16293-2422 versus VLA 1623-2417
34. K2 Ultracool Dwarfs Survey. IV. Monster flares observed on the young brown dwarf
CFHT-BD-Tau 4

25. A 100 au-Wide Bipolar Rotating Shell Emanating From the HH 212
Protostellar Disk: A Disk Wind?
Lee et al.

Accepted by ApJ

http://arxiv.org/pdf/1802.03668

S02outflow shell, inner disk
atmosphere,7>5S0 outflow shell, collimated jet,7>5(dusty diskoptically thick✖)SO maps
Fig3(a)x(|voff| < 3 km s-1)2¬a wide-opening outflow
a collimated jet along the jet axis
Fig3(b)Blueshifted/redshifted emission p)-> mainly radially expanding
Fig3(c)cx4.67iCSO2 maps
Fig4(a), (b)x(|voff| < 3 km s-1)minnerdisk atmosphere,7>5Fig4(b)CH2DOH$Y'*¥
rotation sense
Fig4(c)cx4.67iCSiO4.67¥blueshifted emissionredshifted emission&(Y'*)

Fig.7(a)the redshifted emission in the eastand blueshifted emission in the west-> rotating disk atmosphereKeplerian rotation velocity profile(magenta curves)«Bthe outer part of theatmosphere is not only rotating but also
expanding (Hirota et al. 2017)-> atmosphere outflow shellA)(a) -> (g) minor axis` (-> expansion motion &( )(a) -> (g) major axisx-axis!y­-> expansion fFig.6(a) indicating that the shell is also rotating around the jet axis,
in addition to the expansion mentioned above.
Fig.6(b)The outflow edges are too faint in SO2 to appear in this figure.

outflow shell radius becomes wider

outsideinside~40 au km s-1~50 auoutside regionBWPVa-> Zs¢J((Fig.7)

 specific angular momentum Zs
*disk windA???(k1=9m)
X wind model* OK?

As discussed later, the wind’s source can be on the disk 2–3 au from the protostar.
In HH212,
52 au resolution,outflow extend out from the disk & rotates (Tabone+ 17)
Now, 16 au resolution,compact 2 outflows; a wide-angle outflow shell and a collimated jet.
shell disk windh,7>5)ud-> shellab:07=
shell wide-angle radial wind&~
dask%atmosphereud-> :07=radial_,_eHNXG'

r*



Fig.6-> z = CR2+0”02 in the cylindrical coordinate system(C  14 arcsec−1)
Lee+00 (In the cylindrical coordinate system,)shell material is moving along-> vR = v0R and vz = 2v0z-> v0 ~ 42 km s-1 (Fig.11 solid curves)
shell material is radially expanding,-> vR = v0R and vz = v0z-> v0 ~ 45 km s-1 (Fig.11 dashed curves)

28. The straight and isolated G350.54+0.69 filament: density profileand star formation content
Liu et al.

Accepted by MNRAS

http://arxiv.org/pdf/1805.03670

On scales larger than cores, Herschel results
molecular cloud have an approximately uniform inner width of 0.1 pc
common width may be¯ attributed to the sonic scale below° rooted in the dissipation of magneto-hydrodynamic (MHD) waves&(D (&(j©)clouds-> Wider widths (between 0.26 pc and 0.34 pc)
Juvela et al. (2012) find filament widths of 0.1 to 1 pc, with a typical value of ~ 0.2 - 0.3 pc
8</3;?filament widthRgparameter&)$
It is, therefore, necessary to investigate the properties, including the density profile
shape, of star forming gas filaments beyond the Gould Belt.

tstar forming filamentary cloud G350.54+0.69 (G350.5 afterwards)-> straight and isolated nature→pªnqXG
G350.5-N
G350.5-S
Mtot

590M

⇠18.2 K⇠

NTMtot8.2 ⇥ 1022 cm 2NT<latexit sha1_base64="EjjR04l/+zJeDCX1ZALTnEHFYz8=">AAAC/XichVFNa9RAGH4Tv2r86FYvBS/BtYsIDZNA2eqp4KUglX5tW+i0IclO16HJTJzMLqwhevcPKHhSKCKKV3+AF/+Ah/4E8VjBi4hvsoG1FvUNmXnmmfd532dmwjTmmSbk0DBPnT5z9tzEeevCxUuXJxtTVzYy2VcR60QylmorDDIWc8E6muuYbaWKBUkYs81w/265vzlgKuNSrOthynaSoCf4Ho8CjZTfeE5D1uMiZw9FoFQwvFVYS36upS7sFs14Yrfs23P2kk9lV2pKLSqxWtksvz/OmHc8m2qesMx2yW7uucVjm6okj5LdfNYrimO69bHObTvtUea9wqJMdH+z4TeaxCFV2CeBW4Mm1LEsG6+BQhckRNCHBBgI0IhjCCDDbxtcIJAitwM5cgoRr/YZFGChto9ZDDMCZPdx7OFqu2YFrsuaWaWOsEuMv0KlDTPkM3lDjsgn8pZ8IT/+WiuvapRehjiHIy1L/cmn02vf/6tKcNbwYKz6p2cNezBfeeXoPa2Y8hTRSD949Oxo7c7qTN4ir8hX9P+SHJKPeAIx+BYdrLDVF2DhA7h/XvdJsOE5LnHcFa+54NRPMQHX4DrcxPtuwwIswjJ0sO9P44YxazjmE/PAfGe+H6WaRq25CsfC/PALBUzAFg==</latexit>
sha1_base64="bs8QlLljyYde7WbNFuyzJJm+ZMk=">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</latexit>
sha1_base64="A0JA2hZfInE8HDi3kU0KUHrheOA=">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</latexit>
sha1_base64="Z3cJF7sjhOFYHV5v1lIixwyySyc=">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</latexit>

⇠95M

⇠

17.7 K⇠8.2 ⇥ 1021 cm 2<latexit sha1_base64="ddTEftzfRxL8TFauCQ6aQmB0o5o=">AAACjnichVExTxsxGH1cW5oehRywVOqCiKgoQ/QdQ4uQEEhdGBNoAImgyHeYYHHxXX2XiDTKH2Bh7NCpSAihzqx06NI/0IGfgBhBYunQL5eT2oLafpbt5+fvfX62vShQcUJ0MWA9ePho8HHuiT30dHgk74yOrcVh0/iy4odBaDY8EctAaVlJVBLIjchI0fACue7tventr7ekiVWo3ybtSG41RF2rHeWLhKma87LqybrSHflOC2NEe6ZrV0UUmXDfrkq9/RtfcwpUpDQm7gM3AwVkUQqdE1SxjRA+mmhAQiNhHEAg5rYJF4SIuS10mDOMVLov0YXN2iZnSc4QzO7xWOfVZsZqXvdqxqna51MC7oaVE5ii73RK1/SNPtMl/fhrrU5ao+elzbPX18qolj94tnr7X1WD5wS7v1T/9JxgB3OpV8Xeo5Tp3cLv61vvP1yvzq9MdV7QEV2x/090QV/5Brp14x+X5cpH2PwB7t3nvg/WZosuFd3ybGGpmH1FDs8xiWl+79dYwjJKqPC5hzjDOb5YjvXKWrAW+6nWQKYZxx9hLf8Ek0aaNA==</latexit><latexit<latexit sha1_base64="f8z7fka882gUi96u33eu3smoTBw=">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</latexit>⇠⇡N<latexit sha1_base64="rEQSRWK+ZuPnPUdAK4UbmTJk/b8=">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</latexit>

Rflat = 0.15 ± 0.01 pc (G350.5S)

Rflat = 0.34 ± 0.01 pc (G350.5N)<latexit sha1_base64="4KzKxQ6EoEDal9Sr7JhSasgFOhA=">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</latexit>

Rflat = 0.24 ± 0.01 pc (G350.5<latexit sha1_base64="YQy9MwwTk1P/QWF41kU+ewV5Kz0=">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</latexit><latexit sha1_base64="FPgTEoRoZVB/aDRnCa7Q4eMuKRc=">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</latexit>

Mtot ⇠ 110MN)

Rflat = 0.12 ± 0.01 pc (G350.5

FWHM

Mtot ⇠ 810MS)

One of the advantages of building thecolumn density profile is to use it to derive
the mass per unit length (Mline) along themain axis of the filament.

Mline,main axisC{gravitational instability

Plummer-like function (Cox+16)<latexit sha1_base64="CGisJvHTD0OM50VfGc65WOZo7mo=">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</latexit>

crit2
crit
Mline
⌘ 2 th/G (σ = 0.47  0.11 km s-1 -> Mline⇠ 102 ± 48M pc 1 )<latexit sha1_base64="gQyJuJHlZ91FMjGl6t5SgK9YLFQ=">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</latexit>

two velocity components

accretion flows&z)¦¨&Larson’s relationship¤*)$&(+  

Plummer-like function fitting-> ⇢c = 2.7 ⇥ 104 cm 3This central gas density represents anunderestimate because at the resolution (0.12 pc)
of our observations the central filament density
profile may be unresolved.
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non-thermal turbulent
pressure dominant overthermal pressure in theentire cloud G350.5

Stutz+13, Ragan+06-> 70μm - 24μmvprotostars
¡cenvelope,£Class 0/I&(lIFig. 6-> 670μmQ|[+ 92-UOA) JYSO candidate

G350.5 -> low mass star formation region,")#SED fitting