Search Results - "ANDERSON, D. L"
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Kinematic Distances: A Monte Carlo Method
Published in The Astrophysical journal (20-03-2018)“…Distances to high-mass star-forming regions (HMSFRs) in the Milky Way are a crucial constraint on the structure of the Galaxy. Only kinematic distances are…”
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Metallicity Structure in the Milky Way Disk Revealed by Galactic H ii Regions
Published in The Astrophysical journal (20-12-2019)“…The metallicity structure of the Milky Way disk stems from the chemodynamical evolutionary history of the Galaxy. We use the National Radio Astronomy…”
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Resolution of the Distance Ambiguity for Galactic H II Regions
Published in The Astrophysical journal (01-01-2009)“…We resolve the kinematic distance ambiguity for 266 inner Galaxy H II regions out of a sample of 291 using existing H I and 13CO sky surveys. Our sample…”
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Electron Densities in H ii Regions from Observation of [N ii] 205 μm Fine Structure and Radio Recombination Lines
Published in The Astrophysical journal (01-10-2024)“…We employ observations of the 205 μ m [N ii ] fine structure (FS) line and radio recombination line (RRL) emission to derive the electron density in 10…”
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The Most Sensitive Radio Recombination Line Measurements Ever Made of the Galactic Warm Ionized Medium
Published in The Astrophysical journal (01-09-2024)“…Diffuse ionized gas pervades the disk of the Milky Way. We detect extremely faint emission from this Galactic warm ionized medium (WIM) using the Green Bank…”
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The Galactic Center Lobe as an H ii Region
Published in The Astrophysical journal (01-07-2024)“…The Galactic center lobe (GCL) is an object ∼1° across that is located north of the Galactic center. In the mid-infrared (MIR) the GCL appears as two 8.0 μ m…”
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A Galactic Plane Defined by the Milky Way H ii Region Distribution
Published in The Astrophysical journal (01-02-2019)“…We develop a framework for a new definition of the Galactic midplane, allowing for tilt ( ; rotation about Galactic azimuth 90°) and roll ( ; rotation about…”
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Multiple host shifts by the emerging honeybee parasite, Varroa jacobsoni
Published in Molecular ecology (01-05-2015)“…Host shifts are a key mechanism of parasite evolution and responsible for the emergence of many economically important pathogens. Varroa destructor has been a…”
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FEEDBACK: a SOFIA Legacy Program to Study Stellar Feedback in Regions of Massive Star Formation
Published in Publications of the Astronomical Society of the Pacific (01-10-2020)“…FEEDBACK is a SOFIA (Stratospheric Observatory for Infrared Astronomy) legacy program dedicated to study the interaction of massive stars with their…”
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Nitrogen Abundance Distribution in the Inner Milky Way
Published in The Astrophysical journal (01-10-2024)“…We combine a new Galactic plane survey of hydrogen radio recombination lines (RRLs) with far-infrared surveys of ionized nitrogen, N + , to determine nitrogen…”
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Low-frequency Absorption and Radio Recombination Line Features of the Galactic Center Lobe
Published in The Astrophysical journal (01-07-2024)“…The Galactic center lobe (GCL) is a ∼1° object located north of the Galactic center. In the mid-infrared, the GCL appears as two 8.0 μ m filaments that roughly…”
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The Infrared and Radio Flux Densities of Galactic H ii regions
Published in The Astrophysical journal (01-09-2017)“…We derive infrared and radio flux densities of all ∼1000 known Galactic H ii regions in the Galactic longitude range . Our sample comes from the Wide-Field…”
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The GBT Diffuse Ionized Gas Survey (GDIGS): Discrete Sources
Published in The Astrophysical journal (01-12-2023)“…The Green Bank Telescope Diffuse Ionized Gas Survey (GDIGS) traces ionized gas in the Galactic midplane by observing radio recombination line (RRL) emission…”
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KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds
Published in The Astrophysical journal (10-10-2019)“…We present initial results from the K-band Focal Plane Array Examinations of Young STellar Object Natal Environments survey, a large project on the 100 m Green…”
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Helium Ionization in the Diffuse Ionized Gas Surrounding UCH ii Regions
Published in The Astrophysical journal (01-04-2017)“…We present measurements of the singly ionized helium-to-hydrogen ratio ( ) toward diffuse gas surrounding three ultracompact H ii (UCH ii) regions:…”
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Diffuse Ionized Gas in the Milky Way Disk
Published in The Astrophysical journal (10-11-2017)“…We analyze the diffuse ionized gas (DIG) in the first Galactic quadrant from = 18 ° to 40° using radio recombination line (RRL) data from the Green Bank…”
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SPITZER AND HERSCHEL MULTIWAVELENGTH CHARACTERIZATION OF THE DUST CONTENT OF EVOLVED H II REGIONS
Published in The Astrophysical journal (01-12-2012)“…We have analyzed a uniform sample of 16 evolved H II regions located in a 2[degrees] x 2[degrees] Galactic field centered at (l,b) = (30[degrees], 0[degrees])…”
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Out-of-Plane Behavior of Slender Reinforced Masonry Shear Walls under In-Plane Loading: Experimental Investigation
Published in Journal of structural engineering (New York, N.Y.) (01-03-2018)“…AbstractThis paper presents the results of a multiphase research program aimed at investigating the out-of-plane stability of slender reinforced masonry shear…”
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Geophysics. Top-down tectonics?
Published in Science (American Association for the Advancement of Science) (14-09-2001)Get full text
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Varroa jacobsoni (Acari : Varroidae) is more than one species
Published in Experimental & applied acarology (01-03-2000)“…Varroa jacobsoni was first described as a natural ectoparasitic mite of the Eastern honeybee (Apis cerana) throughout Asia. It later switched host to the…”
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