The magnetic field morphology of the class 0 protostar L1157-mm

Ian W. Stephens; Leslie W. Looney; Woojin Kwon; Charles L.H. Hull; Richard L. Plambeck; Richard M. Crutcher; Nicholas Chapman; Giles Novak; Jacqueline Davidson; John E. Vaillancourt; Hiroko Shinnaga; Tristan Matthews

doi:10.1088/2041-8205/769/1/L15

The magnetic field morphology of the class 0 protostar L1157-mm

Ian W. Stephens, Leslie W. Looney, Woojin Kwon, Charles L.H. Hull, Richard L. Plambeck, Richard M. Crutcher, Nicholas Chapman, Giles Novak, Jacqueline Davidson, John E. Vaillancourt, Hiroko Shinnaga, Tristan Matthews

Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present the first detection of polarization around the Class 0 low-mass protostar L1157-mm at two different wavelengths. We show polarimetric maps at large scales (10″ resolution at 350 μm) from the SHARC-II Polarimeter and at smaller scales (1.″2-4.″5 at 1.3 mm) from the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The observations are consistent with each other and show inferred magnetic field lines aligned with the outflow. The CARMA observations suggest a full hourglass magnetic field morphology centered about the core; this is only the second well-defined hourglass detected around a low-mass protostar to date. We apply two different methods to CARMA polarimetric observations to estimate the plane-of-sky magnetic field magnitude, finding values of 1.4 and 3.4 mG.

Original language	English (US)
Article number	L15
Journal	Astrophysical Journal Letters
Volume	769
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/769/1/L15
State	Published - May 20 2013

Keywords

galaxies: star formation
magnetic fields
polarization
stars: protostars

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1088/2041-8205/769/1/L15

Library availability

Discover UIUC Full Text

Cite this

@article{a4aa05f6f121433396c2b201d8e73280,

title = "The magnetic field morphology of the class 0 protostar L1157-mm",

abstract = "We present the first detection of polarization around the Class 0 low-mass protostar L1157-mm at two different wavelengths. We show polarimetric maps at large scales (10″ resolution at 350 μm) from the SHARC-II Polarimeter and at smaller scales (1.″2-4.″5 at 1.3 mm) from the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The observations are consistent with each other and show inferred magnetic field lines aligned with the outflow. The CARMA observations suggest a full hourglass magnetic field morphology centered about the core; this is only the second well-defined hourglass detected around a low-mass protostar to date. We apply two different methods to CARMA polarimetric observations to estimate the plane-of-sky magnetic field magnitude, finding values of 1.4 and 3.4 mG.",

keywords = "galaxies: star formation, magnetic fields, polarization, stars: protostars",

author = "Stephens, {Ian W.} and Looney, {Leslie W.} and Woojin Kwon and Hull, {Charles L.H.} and Plambeck, {Richard L.} and Crutcher, {Richard M.} and Nicholas Chapman and Giles Novak and Jacqueline Davidson and Vaillancourt, {John E.} and Hiroko Shinnaga and Tristan Matthews",

year = "2013",

month = may,

day = "20",

doi = "10.1088/2041-8205/769/1/L15",

language = "English (US)",

volume = "769",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - The magnetic field morphology of the class 0 protostar L1157-mm

AU - Stephens, Ian W.

AU - Looney, Leslie W.

AU - Kwon, Woojin

AU - Hull, Charles L.H.

AU - Plambeck, Richard L.

AU - Crutcher, Richard M.

AU - Chapman, Nicholas

AU - Novak, Giles

AU - Davidson, Jacqueline

AU - Vaillancourt, John E.

AU - Shinnaga, Hiroko

AU - Matthews, Tristan

PY - 2013/5/20

Y1 - 2013/5/20

N2 - We present the first detection of polarization around the Class 0 low-mass protostar L1157-mm at two different wavelengths. We show polarimetric maps at large scales (10″ resolution at 350 μm) from the SHARC-II Polarimeter and at smaller scales (1.″2-4.″5 at 1.3 mm) from the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The observations are consistent with each other and show inferred magnetic field lines aligned with the outflow. The CARMA observations suggest a full hourglass magnetic field morphology centered about the core; this is only the second well-defined hourglass detected around a low-mass protostar to date. We apply two different methods to CARMA polarimetric observations to estimate the plane-of-sky magnetic field magnitude, finding values of 1.4 and 3.4 mG.

AB - We present the first detection of polarization around the Class 0 low-mass protostar L1157-mm at two different wavelengths. We show polarimetric maps at large scales (10″ resolution at 350 μm) from the SHARC-II Polarimeter and at smaller scales (1.″2-4.″5 at 1.3 mm) from the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The observations are consistent with each other and show inferred magnetic field lines aligned with the outflow. The CARMA observations suggest a full hourglass magnetic field morphology centered about the core; this is only the second well-defined hourglass detected around a low-mass protostar to date. We apply two different methods to CARMA polarimetric observations to estimate the plane-of-sky magnetic field magnitude, finding values of 1.4 and 3.4 mG.

KW - galaxies: star formation

KW - magnetic fields

KW - polarization

KW - stars: protostars

UR - http://www.scopus.com/inward/record.url?scp=84877596166&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84877596166&partnerID=8YFLogxK

U2 - 10.1088/2041-8205/769/1/L15

DO - 10.1088/2041-8205/769/1/L15

M3 - Article

AN - SCOPUS:84877596166

SN - 2041-8205

VL - 769

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L15

ER -

The magnetic field morphology of the class 0 protostar L1157-mm

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this