Browsing Faculty of Science by Title
Now showing items 1277-1296 of 2564
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Karl Popper’s organon and the world’s fisheries: fish stock assessment as a pseudoscience, an inductivism that can bear no fruit
(2006)Recent long term historical studies of commercial fisheries have pointed to a well established pattern of overfishing. Under the principle of transference – what is true in logic is true in psychology and scientific method ... -
A Keck/DEIMOS Kinematic Study of Andromeda IX: dark matter on the smallest galactic scales
(2005-10-20)We present the results of a kinematic survey of the dwarf spheroidal satellite of M31, And-IX, which appears to be the lowest surface brightness and also the faintest galaxy (M_V = -8.3) found to date. Using Keck/DEIMOS ... -
Key issues affecting coastal aquatic ecosystems and changing coastal conditions in Nunavut: A comparative assessment of communities in the Kivalliq region (Marine Affairs Program Technical Report #19).
(Dalhousie University, Marine Affairs Program, 2021) -
Key issues affecting coastal aquatic ecosystems and changing coastal conditions in Nunavut: A comparative assessment of communities in the Qikiqtaaluk region (Marine Affairs Program Technical Report #20)
(Dalhousie University, Marine Affairs Program, 2021) -
Key issues affecting coastal aquatic ecosystems and changing coastal conditions in Nunavut: A comparative assessment of five communities in the Kitikmeot region (Marine Affairs Program Technical Report #17).
(Dalhousie University, Marine Affairs Program, 2021) -
Key players in the Grieg NL Placentia Bay Atlantic Salmon Aquaculture Project: a social network analysis
(2018-12)Global aquaculture is one of the fastest growing food industries, accounting for approximately half of all finfish and invertebrate production as of 2016. In Canada, both the federal and provincial governments are pushing ... -
Killer storms: North Atlantic hurricanes and disease outbreaks in sea urchins
(2010-11)An increase in the incidence of disease in various marine organisms over the past few decades has been linked to ocean climate change. In Nova Scotia, Canada, mass mortalities of sea urchins, due to an amoebic disease, ... -
Kinematic and Chemical constraints on the formation of M31's inner and outer halo
(2007-11-28)The halo of M31 shows a wealth of substructures that are consistent with satellite accretion. Here we report on kinematic and abundance results from Keck/DEIMOS spectroscopy in the calcium triplet region of over 3500 red ... -
The kinematic footprints of five stellar streams in Andromeda's halo
(2008-10)(abridged) We present a spectroscopic analysis of five stellar streams (`A', `B', `Cr', `Cp' and `D') as well as the extended star cluster, EC4, which lies within streamC, all discovered in the halo of M31 from our ... -
The kinematic identification of a thick stellar disc in M31
(2010-10-25)We present the first characterization of a thick disc component in the Andromeda galaxy (M31) using kinematic data from the DEIMOS multi-object spectrograph instrument on Keck II. Using 21 fields in the South West of the ... -
A kinematic study of the Andromeda dwarf spheroidal system
(2013-02-26)We present a homogeneous kinematic analysis of red giant branch stars within 18 of the 28 Andromeda dwarf spheroidal (dSph) galaxies, obtained using the Keck I LRIS and Keck II DEIMOS spectrographs. Based on their g-i ... -
A kinematically selected, metal-poor stellar halo in the outskirts of M31
(2006-12-10)We present evidence for a metal-poor, [Fe/H]$\sim-1.4$ $\sigma$=0.2 dex, stellar halo component detectable at radii from 10 kpc to 70 kpc, in our nearest giant spiral neighbor, the Andromeda galaxy. This metal-poor sample ... -
Lab-scale chemical vapor deposition onto powders
(AIP Publishing, 2022-07-06)In this paper, a laboratory chemical vapor deposition (CVD) reactor is described, which features an opposing screw rotating fluidized bed. The reactor efficiently concentrates powdered reactants in the reaction zone while ... -
The LABOCA survey of the Extended Chandra Deep Field South - radio and mid-infrared counterparts to submillimetre galaxies
(2010-12-01)We present radio and infrared (3.6-24um) counterparts to submillimetre galaxies (SMGs) detected in the Extended Chandra Deep Field South with the LABOCA 870-um bolometer camera on the 12-m Atacama Pathfinder Experiment. ... -
A LABOCA survey of the Extended Chandra Deep Field South - submillimeter properties of near-IR selected galaxies
(2009-03-31)Using the 330hr ESO-MPG 870-micron survey of the Extended Chandra Deep Field South (ECDF-S) obtained with the Large Apex BOlometer CAmera (LABOCA) on the Atacama Pathfinder EXperiment (APEX), we have carried out a stacking ... -
The LABOCA survey of the Extended Chandra Deep Field South: A photometric redshift survey of submillimetre galaxies
(2010-06-10)[abridged] We derive photometric redshifts from 17-band optical to mid-IR photometry of 74 robust counterparts to 68 of the 126 submillimetre galaxies (SMGs) selected at 870um by LABOCA observations in the ECDFS. The median ... -
The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies
(2011-12-01)We present a measurement of the spatial clustering of submillimetre galaxies (SMGs) at z = 1-3. Using data from the 870 micron LESS survey, we employ a novel technique to measure the cross-correlation between SMGs and ... -
The LABOCA survey of the Extended Chandra Deep Field South: Two modes of star formation in AGN hosts?
(2010-01-30)We study the co-existence of star formation and AGN activity in X-ray selected AGN by analyzing stacked 870um submm emission from a deep and wide map of the Extended Chandra Deep Field South, obtained with LABOCA at the ...