Misalignment of outflow axes in the proto-multiple systems in Perseus

Katherine I. Lee; Michael M. Dunham; Philip C. Myers; Héctor G. Arce; Tyler L. Bourke; Alyssa A. Goodman; Jes Kristian Jørgensen; Lars E. Kristensen; Stella S. R. Offner; Jaime E. Pineda; John J. Tobin; Eduard I. Vorobyov

doi:10.3847/2041-8205/820/1/L2

Misalignment of outflow axes in the proto-multiple systems in Perseus

Katherine I. Lee, Michael M. Dunham, Philip C. Myers, Héctor G. Arce, Tyler L. Bourke, Alyssa A. Goodman, Jes Kristian Jørgensen, Lars E. Kristensen, Stella S. R. Offner, Jaime E. Pineda, John J. Tobin, Eduard I. Vorobyov

Astrophysics and Planetary Science

40 Citations (Scopus)

Abstract

We investigate the alignment between outflow axes in nine of the youngest binary/multiple systems in the Perseus Molecular Cloud. These systems have typical member spacing larger than 1000 au. For outflow identification, we use ¹²CO(2-1) and ¹²CO(3-2) data from a large survey with the Submillimeter Array: Mass Assembly of Stellar Systems and their Evolution with the SMA. The distribution of outflow orientations in the binary pairs is consistent with random or preferentially anti-aligned distributions, demonstrating that these outflows are misaligned. This result suggests that these systems are possibly formed in environments where the distribution of angular momentum is complex and disordered, and these systems do not come from the same co-rotating structures or from an initial cloud with aligned vectors of angular momentum.

Original language	English
Article number	L2
Journal	Astrophysics Journal Letters
Volume	820
Issue number	1
Number of pages	7
ISSN	2041-8205
DOIs	https://doi.org/10.3847/2041-8205/820/1/L2
Publication status	Published - 2016

Keywords

binaries: general
ISM: kinematics and dynamics
ISM: molecules
stars: formation
stars: protostars
submillimeter: ISM

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title = "Misalignment of outflow axes in the proto-multiple systems in Perseus",

abstract = "We investigate the alignment between outflow axes in nine of the youngest binary/multiple systems in the Perseus Molecular Cloud. These systems have typical member spacing larger than 1000 au. For outflow identification, we use 12CO(2-1) and 12CO(3-2) data from a large survey with the Submillimeter Array: Mass Assembly of Stellar Systems and their Evolution with the SMA. The distribution of outflow orientations in the binary pairs is consistent with random or preferentially anti-aligned distributions, demonstrating that these outflows are misaligned. This result suggests that these systems are possibly formed in environments where the distribution of angular momentum is complex and disordered, and these systems do not come from the same co-rotating structures or from an initial cloud with aligned vectors of angular momentum.",

keywords = "binaries: general, ISM: kinematics and dynamics, ISM: molecules, stars: formation, stars: protostars, submillimeter: ISM",

author = "Lee, {Katherine I.} and Dunham, {Michael M.} and Myers, {Philip C.} and Arce, {H{\'e}ctor G.} and Bourke, {Tyler L.} and Goodman, {Alyssa A.} and J{\o}rgensen, {Jes Kristian} and Kristensen, {Lars E.} and Offner, {Stella S. R.} and Pineda, {Jaime E.} and Tobin, {John J.} and Vorobyov, {Eduard I.}",

year = "2016",

doi = "10.3847/2041-8205/820/1/L2",

language = "English",

volume = "820",

journal = "The Astrophysical Journal Letters",

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TY - JOUR

T1 - Misalignment of outflow axes in the proto-multiple systems in Perseus

AU - Lee, Katherine I.

AU - Dunham, Michael M.

AU - Myers, Philip C.

AU - Arce, Héctor G.

AU - Bourke, Tyler L.

AU - Goodman, Alyssa A.

AU - Jørgensen, Jes Kristian

AU - Kristensen, Lars E.

AU - Offner, Stella S. R.

AU - Pineda, Jaime E.

AU - Tobin, John J.

AU - Vorobyov, Eduard I.

PY - 2016

Y1 - 2016

N2 - We investigate the alignment between outflow axes in nine of the youngest binary/multiple systems in the Perseus Molecular Cloud. These systems have typical member spacing larger than 1000 au. For outflow identification, we use 12CO(2-1) and 12CO(3-2) data from a large survey with the Submillimeter Array: Mass Assembly of Stellar Systems and their Evolution with the SMA. The distribution of outflow orientations in the binary pairs is consistent with random or preferentially anti-aligned distributions, demonstrating that these outflows are misaligned. This result suggests that these systems are possibly formed in environments where the distribution of angular momentum is complex and disordered, and these systems do not come from the same co-rotating structures or from an initial cloud with aligned vectors of angular momentum.

AB - We investigate the alignment between outflow axes in nine of the youngest binary/multiple systems in the Perseus Molecular Cloud. These systems have typical member spacing larger than 1000 au. For outflow identification, we use 12CO(2-1) and 12CO(3-2) data from a large survey with the Submillimeter Array: Mass Assembly of Stellar Systems and their Evolution with the SMA. The distribution of outflow orientations in the binary pairs is consistent with random or preferentially anti-aligned distributions, demonstrating that these outflows are misaligned. This result suggests that these systems are possibly formed in environments where the distribution of angular momentum is complex and disordered, and these systems do not come from the same co-rotating structures or from an initial cloud with aligned vectors of angular momentum.

KW - binaries: general

KW - ISM: kinematics and dynamics

KW - ISM: molecules

KW - stars: formation

KW - stars: protostars

KW - submillimeter: ISM

U2 - 10.3847/2041-8205/820/1/L2

DO - 10.3847/2041-8205/820/1/L2

M3 - Journal article

AN - SCOPUS:84962327204

SN - 2041-8205

VL - 820

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

IS - 1

M1 - L2

ER -

Misalignment of outflow axes in the proto-multiple systems in Perseus

Abstract

Keywords

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