CARMA LARGE AREA STAR FORMATION SURVEY: PROJECT OVERVIEW WITH ANALYSIS OF DENSE GAS STRUCTURE AND KINEMATICS IN BARNARD 1

We present details of the CARMA Large Area Star Formation Survey (CLASSy), while focusing on observations of Barnard 1. CLASSy is a CARMA Key Project that spectrally imaged N sub(2)H super(+) HCO super(+), and HCN (J = 1 arrow right 0 transitions) across over 800 square arcminutes of the Perseus and...

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Veröffentlicht in:The Astrophysical journal 2014-10, Vol.794 (2), p.1-30
Hauptverfasser: Storm, Shaye, Mundy, Lee G, Fernandez-lopez, Manuel, Lee, Katherine I, Looney, Leslie W, Teuben, Peter, ROSOLOWSKY, ERIK, Arce, Hector G, Ostriker, Eve C, Segura-Cox, Dominique M
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container_end_page 30
container_issue 2
container_start_page 1
container_title The Astrophysical journal
container_volume 794
creator Storm, Shaye
Mundy, Lee G
Fernandez-lopez, Manuel
Lee, Katherine I
Looney, Leslie W
Teuben, Peter
ROSOLOWSKY, ERIK
Arce, Hector G
Ostriker, Eve C
Segura-Cox, Dominique M
description We present details of the CARMA Large Area Star Formation Survey (CLASSy), while focusing on observations of Barnard 1. CLASSy is a CARMA Key Project that spectrally imaged N sub(2)H super(+) HCO super(+), and HCN (J = 1 arrow right 0 transitions) across over 800 square arcminutes of the Perseus and Serpens Molecular Clouds. N sub(2)H super(+) shows the strongest emission, with morphology similar to cool dust in the region, while HCO super(+) and HCN trace several molecular outflows from a collection of protostars in the main core. We identify a range of kinematic complexity, with N sub(2)H super(+) velocity dispersions ranging from ~0.05 to 0.50 km s super(-1) across the field. Comparing these relations, we propose that all dense gas structures in Barnard 1 have comparable depths into the sky, around 0.1-0.2 pc; this suggests that overdense, parsec-scale regions within molecular clouds are better described as flattened structures rather than spherical collections of gas. Science-ready PPV cubes for Barnard 1 molecular emission are available for download.
doi_str_mv 10.1088/0004-637X/794/2/165
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subjects ALGORITHMS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Collection
COMPARATIVE EVALUATIONS
COSMIC GASES
DETECTION
DISPERSIONS
DUSTS
EMISSION
Flattening
Kinematics
Molecular clouds
Molecular structure
MOLECULES
PROTOSTARS
RESOLUTION
SKY
Spectra
SPHERICAL CONFIGURATION
Star formation
STARS
VELOCITY
title CARMA LARGE AREA STAR FORMATION SURVEY: PROJECT OVERVIEW WITH ANALYSIS OF DENSE GAS STRUCTURE AND KINEMATICS IN BARNARD 1
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