2026AJ....171..172F


Query : 2026AJ....171..172F

2026AJ....171..172F - Astron. J., 171, 172 (2026/March-0)

Early Planet Formation in Embedded Disks (eDisk). XIX. Structures of Molecular Outflows.

FEENEY-JOHANSSON A., AIKAWA Y., TAKAKUWA S., OHASHI N., PLUNKETT A., JORGENSEN J.K., SHANG H., LI Z.-Y., SHARMA R., KWON W., LEE J.-E., LOONEY L.W., YANG Y.-L., NARANG M., DE GREGORIO-MONSALVO I. (The eDisk Team)

Abstract (from CDS):

As part of the ALMA Large Program “Early Planet Formation in Embedded Disks,” 12CO (2-1) was observed towards 19 nearby low-mass protostars. Of these objects, 15 sources are found to show molecular outflow emission. Based on their morphological and kinematical structures, the CO outflows are classified into three types: a wind-driven shell, where ambient material is swept up by a wide-angle wind from the star, a bow shock, and a slow disk wind, which is a conical or parabolic flow with onion-like velocity structure. We categorize 11 outflows as a slow disk wind, 7 as a wind-driven shell, and 1 as a bow shock. Four of these outflows were found to show signs of both slow disk wind and wind-driven shell characteristics. Five objects show misalignment between the red- and blueshifted outflows. Seven objects show significant misalignment between the outflow axis (either or both of the red- and blueshifted outflows) and the minor axis of the dust continuum emission around the protostar. For the objects showing wind-driven shell emission, we compare simple parametrized models with the observations to derive physical properties of the observed shells, such as their dynamical ages. This shows evidence of a time variability in the outflows, such as changes in their direction. In some objects, large differences are seen between the properties of the red- and blueshifted outflows, possibly indicating differences in the properties of the ambient medium with which the outflow interacts.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Star formation - Millimeter astronomy - Stellar jets - CO line emission

Simbad objects: 26

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Number of rows : 26
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 IRAS 04016+2610 Y*O 04 04 43.07064 +26 18 56.3904           ~ 284 0
2 IRAS 04166+2706 Y*O 04 19 42.62736 +27 13 38.4312           ~ 153 0
3 IRAS 04169+2702 Y*O 04 19 58.44936 +27 09 57.0672           K0-M4 130 1
4 [EM98] DG Tau B cRN Y*O 04 27 02.66088 +26 05 30.4548           ~ 208 0
5 V* V1213 Tau Or* 04 31 37.5055489536 +18 12 24.383952396           K7 605 0
6 IRAS 04302+2247 Y*O 04 33 16.50096 +22 53 20.4000           ~ 215 0
7 IRAS 04365+2535 Y*O 04 39 35.19360 +25 41 44.7252           ~ 330 0
8 IRAS 04368+2557 Y*O 04 39 53.97816 +26 03 09.6804           ~ 309 0
9 NAME HH 46-47 HH 08 25 43.6 -51 00 36           ~ 216 2
10 IRAS 11051-7706 Y*O 11 06 46.025 -77 22 29.67           ~ 101 0
11 [B2001b] IRS 2 Y*O 12 01 33.86688 -65 08 44.9232           ~ 42 0
12 [B2001b] IRS 1 Y*O 12 01 36.53040 -65 08 51.9180           ~ 167 0
13 IRAS 15398-3359 Y*? 15 43 02.21016 -34 09 07.7112       18.38 21.72 ~ 215 0
14 [CHG85] GSS 30 IRS 3 Y*O 16 26 21.77376 -24 22 51.3948           ~ 79 0
15 YLW 15 Y*O 16 27 26.906 -24 40 50.81           ~ 281 1
16 ROX 27 TT* 16 27 39.4295731464 -24 39 15.527230272       15.76 14.03 M0+M4 137 0
17 IRAS 16253-2429 FIR 16 28 22.2 -24 36 31           ~ 66 0
18 IRAS 16285-2355 Y*O 16 31 35.65752 -24 01 29.4708           ~ 178 0
19 IRAS 16544-1604 Y*O 16 57 19.626 -16 09 23.30           ~ 53 1
20 2MASS J19014846-3657148 Y*O 19 01 48.461 -36 57 14.88           ~ 34 0
21 CHLT 14 Y*O 19 01 56.41 -36 57 28.0           ~ 121 1
22 IRAS 18595-3712 Y*O 19 02 58.706 -37 07 34.67           ~ 60 0
23 [OTJ2023] R CrA IRAS 32A Y*O 19 02 58.722 -37 07 37.39           ~ 8 0
24 ISO-CrA 190 NIR 19 03 02.95 -37 07 04.2           ~ 4 0
25 LDN 663 DNe 19 36 55 +07 34.4           ~ 698 0
26 NAME R CrA Association As* ~ ~           ~ 21 0

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