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Clustered and Triggered Star Formation in W5: Observations with Spitzer
Xavier P. Koenig, Lori E. Allen, Robert A. Gutermuth +3
We present images and initial results from our extensive Spitzer Space Telescope imaging survey of the W5 H II region with the Infrared Array Camera (IRAC) and Multiband Imaging Ph…
Spitzer observations of the Massive star forming complex S254-S258: structure and evolution
L. Chavarria, L. Allen, J. L. Hora +2
We present Spitzer-IRAC, NOAO 2.1meter-Flamingos, Keck-NIRC, and FCRAO-SEQUOIA observations of the massive star forming complex S254-S258, covering an area of 25x20 arc-minutes. Us…
The Molecular Environment of the Gamma-ray Source TeV J2032+4130
Yousaf M. Butt, Nicola Schneider, T. M. Dame +1
The mysterious very high energy gamma-ray source, TeV J2032+4130, is coincident with the powerful Cygnus OB2 stellar association, though a physical association between the two rema…
The Five College Radio Astronomy Observatory CO Mapping Survey of the Taurus Molecular Cloud
Gopal Narayanan, Mark H. Heyer, Christopher Brunt +3
The FCRAO Survey of the Taurus Molecular Cloud observed the 12CO and 13CO J=1-0 emission from 98 square degrees of this important, nearby star forming region. This set of data with…
Large-Scale Structure of the Molecular Gas in Taurus Revealed by High Linear Dynamic Range Spectral Line Mapping
Paul F. Goldsmith, Mark Heyer, Gopal Narayanan +3
We report the results of a 100 square degree survey of the Taurus Molecular Cloud region in the J = 1-0 transition of 12CO and 13CO. The image of the cloud in each velocity channel…
Magnetically Aligned Velocity Anisotropy in the Taurus Molecular Cloud
Mark Heyer, Hao Gong, Eve Ostriker +1
Velocity anisotropy induced by MHD turbulence is investigated using computational simulations and molecular line observations of the Taurus molecular cloud. A new analysis method i…
Sequential and Spontaneous Star Formation Around the Mid-Infrared Halo HII Region KR 140
C. R. Kerton, K. Arvidsson, Lewis B. G. Knee +1
We use 2MASS and MSX infrared observations, along with new molecular line (CO) observations, to examine the distribution of young stellar objects (YSOs) in the molecular cloud surr…
The Balloon-borne Large Aperture Submillimeter Telescope (BLAST) 2005: A 4 sq. deg Galactic Plane Survey in Vulpecula (l=59)
E. L. Chapin, P. A. R. Ade, J. J. Bock +24
We present the first results from a new 250, 350, and 500 micron Galactic Plane survey taken with the Balloon-borne Large-Aperture Submillimeter Telescope (BLAST) in 2005. This sur…
The James Clerk Maxwell Telescope Legacy Survey of Nearby Star-forming Regions in the Gould Belt
D. Ward-Thompson, J. Di Francesco, J. Hatchell +59
This paper describes a James Clerk Maxwell Telescope (JCMT) legacy survey that has been awarded roughly 500 hrs of observing time to be carried out from 2007 to 2009. In this surve…
The SCUBA-2 "All-Sky" Survey
M. A. Thompson, S. Serjeant, T. Jenness +45
The sub-millimetre wavelength regime is perhaps the most poorly explored over large areas of the sky, despite the considerable effort that has been expended in making deep maps ove…
Cold HI in Turbulent Eddies and Galactic Spiral Shocks
Steven J. Gibson, A. Russell Taylor, Jeroen M. Stil +3
HI 21cm-line self-absorption (HISA) reveals the shape and distribution of cold atomic clouds in the Galactic disk. Many of these clouds lack corresponding CO emission, despite bein…
Evidence for Shocked Molecular Gas in the Galactic SNR CTB 109 (G109.1-1.0)
Manami Sasaki, Roland Kothes, Paul P. Plucinsky +2
We report the detection of molecular clouds around the X-ray bright interior feature in the Galactic supernova remnant (SNR) CTB 109 (G109.1-1.0). This feature, called the Lobe, ha…
Turbulent Gas Flows in the Rosette and G216-2.5 Molecular Clouds: Assessing Turbulent Fragmentation Descriptions of Star Formation
M. Heyer, J. Williams, C. Brunt
The role of turbulent fragmentation in regulating the efficiency of star formation in interstellar clouds is examined from new wide field imaging of 12CO and 13CO J=1-0 emission fr…
CO in HI Self-Absorbed Clouds in Perseus
P. D. Klaassen, R. Plume, S. J. Gibson +2
We have observed 12CO J = 2-1 and J = 1-0, and 13CO J = 1-0 emission in two regions of HI Self-Absorption (HISA) in Perseus: a small, isolated HISA feature called the globule and a…
An Automated Method for the Detection and Extraction of HI Self-Absorption in High-Resolution 21cm Line Surveys
Steven J. Gibson, A. Russell Taylor, Lloyd A. Higgs +2
We describe algorithms that detect 21cm line HI self-absorption (HISA) in large data sets and extract it for analysis. Our search method identifies HISA as spatially and spectrally…
A Self-Absorption Census of Cold HI Clouds in the Canadian Galactic Plane Survey
Steven J. Gibson, A. Russell Taylor, Lloyd A. Higgs +2
We present a 21cm line HI self-absorption (HISA) survey of cold atomic gas within Galactic longitudes 75 to 146 degrees and latitudes -3 to +5 degrees. We identify HISA as spatiall…
The Universality of Turbulence in Galactic Molecular Clouds
Mark Heyer, Christopher Brunt
The universality of interstellar turbulence is examined from observed structure functions of 27 giant molecular clouds and Monte Carlo modeling. We show that the structure function…
Modification of Projected Velocity Power Spectra by Density Inhomogeneities in Compressible Supersonic Turbulence
C. M. Brunt, M. -M. Mac Low
(Modified) The scaling of velocity fluctuation, dv, as a function of spatial scale L in molecular clouds can be measured from size-linewidth relations, principal component analysis…
Interstellar Turbulence: II. Energy Spectra of Molecular Regions in the Outer Galaxy
Christopher M. Brunt, Mark H. Heyer
The multivariate tool of Principal Component Analysis (PCA) is applied to 23 fields in the FCRAO CO Survey of the Outer Galaxy. PCA enables the identification of line profile diffe…
The Supernova Remnant CTB104A : Magnetic Field Structure and Interaction with the Environment
Bulent Uyaniker, Roland Kothes, Cristopher M. Brunt
We present new, high resolution 1420 and 408 MHz continuum images and HI and 12CO (J=1-0) spectral line maps of the diffuse supernova remnant CTB104A (G93.7-0.3). Analysis of the c…
Interstellar Turbulence: I. Retrieval of Velocity Field Statistics
C. Brunt, M. H. Heyer
We demonstrate the capability of Principal Component Analysis (PCA) as applied by Heyer & Schloerb (1997) to extract the statistics of turbulent interstellar velocity fields as mea…