2023ApJ...943..182D

Query : 2023ApJ...943..182D

2023ApJ...943..182D - Astrophys. J., 943, 182 (2023/February-1)

Discovery of a New Molecular Bubble-Outflow Structure in the Taurus B18 Cloud.

DUAN Y., LI D., GOLDSMITH P.F., PAGANI L., CHING T.-C., LIU S., XIE J. and WANG C.

Abstract (from CDS):

Star formation can produce bubbles and outflows, as a result of stellar feedback. Outflows and bubbles inject momentum and energy into the surrounding interstellar medium, and so are related to the overall energy balance of the molecular cloud. Molecular bubbles can be resolved by higher-resolution radio telescopes to quantify the effect of star formation on molecular clouds. We report here the identification of a new molecular bubble with an outflow, and a Herbig-Haro object, HH 319, located at the bubble center. Multiwavelength data have been utilized to study its spatial structure, energy injection, and dynamical timescale. This bubble has a kinetic energy of 5.8 × 1043 erg within the smallest radius of a bubble in Taurus, 0.077 pc. The bubble formed ∼70,000 yr ago. According to the proper-motion velocities of protostars from Gaia EDR3, the T Tauri binary stars (FY Tau and FZ Tau) at the southwest edge of the bubble may have produced the outflow-bubble structure. This is an unusual new structure found in low- and intermediate-mass star formation regions. Only a bubble in Orion A, driven by V380 Ori, has a similar structure. The bubble-outflow structure provides additional observational evidence for the theory of stellar wind from T Tauri stars. It enhances our understanding of how stellar feedback acts on molecular clouds.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar wind bubbles - Stellar winds - Molecular clouds - T Tauri stars - Stellar feedback

Simbad objects: 21

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Number of rows : 21
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 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
2 LDN 1524 DNe 04 27 57.7 +24 39 18           ~ 87 0
3 V* FY Tau Or* 04 32 30.5784243120 +24 19 57.359889192 17.83 18.05 13.49 14.17   M0.1 132 0
4 V* FZ Tau Or* 04 32 31.7627107344 +24 20 03.056011548 16.15     15.04   M0 176 0
5 HH 319G HH 04 32 38.7 +24 21 43           ~ 2 0
6 Haro 6-19 HH 04 32 39.31 +24 21 24.6           ~ 10 1
7 HH 319A HH 04 32 39.4 +24 21 24           ~ 3 0
8 NAME Kutner's Cloud MoC 04 32 44.6 +24 23 13           ~ 283 0
9 2MASS J04325026+2422115 Or* 04 32 50.2670582784 +24 22 11.662393728         18.79 M7.5 46 0
10 2MASS J04330197+2421000 TT* 04 33 01.9716248352 +24 21 00.070327692     17.951     M7.1 55 0
11 LDN 1536 DNe 04 33 24.6 +22 43 29           ~ 114 0
12 V* GI Tau Or* 04 33 34.0609697160 +24 21 17.068989852 14.34   13.70 12.15 11.06 K5Ve 307 1
13 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
14 NAME Orion Streamers PoC 05 35 41 -06 23.0           ~ 18 0
15 HH 1031 HH 05 36 06.4 -06 35 33           ~ 3 0
16 HH 35 HH 05 36 22.5 -06 41 52           ~ 29 0
17 BD-06 1253 Ae* 05 36 25.4320468080 -06 42 57.684730284   11.65 10.9 10.29   A1e 450 1
18 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
19 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
20 NAME HH 46-47 HH 08 25 43.6 -51 00 36           ~ 216 2
21 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1

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