2022ApJ...927...54O

Query : 2022ApJ...927...54O

2022ApJ...927...54O - Astrophys. J., 927, 54-54 (2022/March-1)

Misaligned Rotations of the Envelope, Outflow, and Disks in the Multiple Protostellar System of VLA 1623-2417: FAUST. III.

OHASHI S., CODELLA C., SAKAI N., CHANDLER C.J., CECCARELLI C., ALVES F., FEDELE D., HANAWA T., DURAN A., FAVRE C., LOPEZ-SEPULCRE A., LOINARD L., MERCIMEK S., MURILLO N.M., PODIO L., ZHANG Y., AIKAWA Y., BALUCANI N., BIANCHI E., BOUVIER M., BUSQUET G., CASELLI P., CAUX E., CHARNLEY S., CHOUDHURY S., CUELLO N., DE SIMONE M., DULIEU F., EVANS L., FENG S., FONTANI F., FRANCIS L., HAMA T., HERBST E., HIRANO S., HIROTA T., IMAI M., ISELLA A., JIMENEZ-SERRA I., JOHNSTONE D., KAHANE C., LE GAL R., LEFLOCH B., MAUD L.T., MAUREIRA M.J., MENARD F., MIOTELLO A., MOELLENBROCK G., MORI S., NAKATANI R., NOMURA H., OBA Y., O'DONOGHUE R., OKODA Y., OSPINA-ZAMUDIO J., OYA Y., PINEDA J., RIMOLA A., SAKAI T., SEGURA-COX D., SHIRLEY Y., SVOBODA B., TAQUET V., TESTI L., VASTEL C., VITI S., WATANABE N., WATANABE Y., WITZEL A., XUE C., ZHAO B. and YAMAMOTO S.

Abstract (from CDS):

We report a study of the low-mass Class 0 multiple system VLA 1623AB in the Ophiuchus star-forming region, using H13CO+ (J = 3-2), CS (J = 5-4), and CCH (N = 3-2) lines as part of the ALMA Large Program FAUST. The analysis of the velocity fields revealed the rotation motion in the envelope and the velocity gradients in the outflows (about 2000 au down to 50 au). We further investigated the rotation of the circumbinary VLA 1623A disk, as well as the VLA 1623B disk. We found that the minor axis of the circumbinary disk of VLA 1623A is misaligned by about 12° with respect to the large-scale outflow and the rotation axis of the envelope. In contrast, the minor axis of the circumbinary disk is parallel to the large-scale magnetic field according to previous dust polarization observations, suggesting that the misalignment may be caused by the different directions of the envelope rotation and the magnetic field. If the velocity gradient of the outflow is caused by rotation, the outflow has a constant angular momentum and the launching radius is estimated to be 5-16 au, although it cannot be ruled out that the velocity gradient is driven by entrainments of the two high-velocity outflows. Furthermore, we detected for the first time a velocity gradient associated with rotation toward the VLA 16293B disk. The velocity gradient is opposite to the one from the large-scale envelope, outflow, and circumbinary disk. The origin of its opposite gradient is also discussed.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Star formation - Stellar jets - Protostars - Circumstellar disks - Young stellar objects - Interstellar medium - Interstellar molecules - Astrochemistry

Simbad objects: 27

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Number of rows : 27
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 JCMTSE J032536.1+304514 Y*O 03 25 36.22 +30 45 15.7           ~ 145 0
2 [JCC87] IRAS 4C Y*O 03 29 13.54 +31 13 58.2           ~ 122 1
3 LDN 1489 DNe 04 04 47.5 +26 19 42           ~ 238 0
4 IRAS 04191+1523 Y*O 04 22 00.43944 +15 30 21.2148           ~ 206 0
5 IRAS 04365+2535 Y*O 04 39 35.19360 +25 41 44.7252           ~ 330 0
6 LDN 1527 DNe 04 39 53 +25 45.0           ~ 689 0
7 [RLK73] IRc 2 IR 05 35 14.51548 -05 22 30.5943           ~ 673 1
8 HH 212 HH 05 43 51.41 -01 02 53.1           ~ 443 1
9 NAME Mon R2 IRS 2 * 06 07 45.83 -06 22 53.5           B0 122 0
10 NAME HH 46-47 HH 08 25 43.6 -51 00 36           ~ 216 2
11 [B2001b] IRS 1 Y*O 12 01 36.53040 -65 08 51.9180           ~ 167 0
12 BHR 71 MoC 12 01 37 -65 08.8           ~ 163 0
13 IRAS 15398-3359 Y*? 15 43 02.21016 -34 09 07.7112       18.38 21.72 ~ 215 0
14 ALMA J162625.63-242429.5 Y*O 16 26 25.62 -24 24 28.9           ~ 49 1
15 GBS-VLA J162626.31-242430.2 Y*O 16 26 26.31 -24 24 30.7           ~ 22 0
16 [HCL2018] VLA 1623Ab smm 16 26 26.3847 -24 24 30.854           ~ 11 0
17 GBS-VLA J162626.39-242430.9 Y*O 16 26 26.39 -24 24 30.8           ~ 38 0
18 [HCL2018] VLA 1623Aa smm 16 26 26.3981 -24 24 30.807           ~ 11 0
19 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 312 1
20 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 429 0
21 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
22 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1357 1
23 [W89] A2 Rad 16 32 22.866 -24 28 35.90           ~ 37 0
24 [W89] A1 Rad 16 32 22.887 -24 28 35.67           ~ 39 0
25 2MASS J17112317-2724315 Y*O 17 11 23.17752 -27 24 31.5288           ~ 91 0
26 LDN 483 DNe 18 17 35 -04 39.8           ~ 359 0
27 LDN 663 DNe 19 36 55 +07 34.4           ~ 698 0

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