Differences in the rotational properties of multiple stellar populations in M13: a faster rotation for the 'extreme'chemical subpopulation
MJ Cordero, V H�nault-Brunet…�- Monthly Notices of�…, 2017 - academic.oup.com
We use radial velocities from spectra of giants obtained with the WIYN telescope, coupled
with existing chemical abundance measurements of Na and O for the same stars, to probe
the presence of kinematic differences among the multiple populations of the globular cluster
(GC) M13. To characterize the kinematics of various chemical subsamples, we introduce a
method using Bayesian inference along with a Markov chain Monte Carlo algorithm to fit a
six-parameter kinematic model (including rotation) to these subsamples. We find that the so�…
with existing chemical abundance measurements of Na and O for the same stars, to probe
the presence of kinematic differences among the multiple populations of the globular cluster
(GC) M13. To characterize the kinematics of various chemical subsamples, we introduce a
method using Bayesian inference along with a Markov chain Monte Carlo algorithm to fit a
six-parameter kinematic model (including rotation) to these subsamples. We find that the so�…
VDES J2325−5229 a z = 2.7 gravitationally lensed quasar discovered using morphology-independent supervised machine learning
F Ostrovski, RG McMahon, AJ Connolly…�- Monthly Notices of�…, 2017 - academic.oup.com
We present the discovery and preliminary characterization of a gravitationally lensed quasar
with a source redshift zs= 2.74 and image separation of 2.9 arcsec lensed by a foreground
zl= 0.40 elliptical galaxy. Since optical observations of gravitationally lensed quasars show
the lens system as a superposition of multiple point sources and a foreground lensing
galaxy, we have developed a morphology-independent multi-wavelength approach to the
photometric selection of lensed quasar candidates based on Gaussian Mixture Models�…
with a source redshift zs= 2.74 and image separation of 2.9 arcsec lensed by a foreground
zl= 0.40 elliptical galaxy. Since optical observations of gravitationally lensed quasars show
the lens system as a superposition of multiple point sources and a foreground lensing
galaxy, we have developed a morphology-independent multi-wavelength approach to the
photometric selection of lensed quasar candidates based on Gaussian Mixture Models�…
[HTML][HTML] Evaluation of the biochemical, inflammatory and oxidative profile of obese patients given clinical treatment and bariatric surgery
R Schmatz, MR Bitencourt, LD Patias, M Beck…�- Clinica Chimica�…, 2017 - Elsevier
Background We investigated the biochemical and inflammatory parameters as well as
biomarkers of oxidative stress in morbidly obese patients before and after bariatric surgery
and clinical treatment. Methods This study was conducted using 60 individuals (10 men and
50 women) distributed into 3 groups: the control group, 20 non-diabetic obese patients given
clinical treatment, the bariatric group, 20 non-diabetic obese patients given a Roux-en-Y
bypass gastroplasty, and the bariatric diabetic group, 20 diabetic obese patients given a�…
biomarkers of oxidative stress in morbidly obese patients before and after bariatric surgery
and clinical treatment. Methods This study was conducted using 60 individuals (10 men and
50 women) distributed into 3 groups: the control group, 20 non-diabetic obese patients given
clinical treatment, the bariatric group, 20 non-diabetic obese patients given a Roux-en-Y
bypass gastroplasty, and the bariatric diabetic group, 20 diabetic obese patients given a�…
[HTML][HTML] Reconstructing North Atlantic marine climate variability using an absolutely-dated sclerochronological network
Reconstructing regional to hemispheric-scale climate variability requires the application of
spatially representative and climatically sensitive proxy archives. Large spatial networks of
dendrochronologies have facilitated the reconstruction of atmospheric variability and
inferred variability in the Atlantic Ocean system. However, the marine environment has
hitherto lacked the direct application of the spatial network approach because of the small
number of individual absolutely-dated marine archives. In this study we present the first�…
spatially representative and climatically sensitive proxy archives. Large spatial networks of
dendrochronologies have facilitated the reconstruction of atmospheric variability and
inferred variability in the Atlantic Ocean system. However, the marine environment has
hitherto lacked the direct application of the spatial network approach because of the small
number of individual absolutely-dated marine archives. In this study we present the first�…