Articles: Recent submissions

Now showing items 21-40 of 819

Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina

Carraro, Giovanni; Turner, David G.; Majaess, Daniel J.; Baume, Gustavo L.; Gamen, Roberto; Lera, José A. Molina (The American Astronomical Society, 2017-04)

Photometric CCD UB VI_C photometry obtained for 4860 stars surrounding the embedded southern cluster SAI 113 (Skiff 8) is used to examine the reddening in the field and derive the distance to the ...
FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars

Minniti, Dante; Palma, Tali; Dékány, Istvan; Hempel, Marin; Rekjuba, Marina; Pullen, Joyce; Alonso-García, Javier; Barbá, Rodolfo; Barbuy, Beatriz; Majaess, Daniel J. (The American Astronomical Society, 2017-03-20)

We use deep multi-epoch near-IR images of the VISTA Variables in the Vía Láctea (VVV) Survey to search for RR Lyrae stars toward the Southern Galactic plane. Here, we report the discovery of a group of RR ...
Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster

Akamatsu, H.; Akimoto, F.; Allen, S.W.; Chaio, M.P.; Coppi, P.; Constantini, E.; Herder, J.W.; Enoto, T.; Gallo, Luigi C.; Wilkins, D.R. (The American Astronomical Society, 2017-03-03)

High-resolution X-ray spectroscopy with Hitomi was expected to resolve the origin of the faint unidentified E ≈ 3.5 keV emission line reported in several low-resolution studies of various massive ...
ISM Properties of a Massive Dusty Star-forming Galaxy Discovered at z similar to 7

Strandet, M.L.; Weiss, A.; De Breuk, C.; Marrone, D.P.; Veira, J.D.; Aravena, M.; Ashby, M.L.N.; Béthermin, M.; Bothwell, M.S.; Cunningham, Daniel J.M. (The American Astronomical Society, 2017-06-20)

We report the discovery and constrain the physical conditions of the interstellar medium of the highest-redshift millimeter-selected dusty star-forming galaxy to date, SPT-S J031132−5823.4 (hereafter SPT0311−58), at . ...
No Conclusive Evidence for Transits of Proxima b in MOST Photometry

Kipping, David M.; Cameron, Chris; Hartman, Joel D.; Davenport, James R.A.; Matthews, Jaymie M.; Sasselov, Dimitar; Rowe, Jason; Siverd, Robert J.; Chen, Jingjing; Guenther, David B. (The American Astronomical Society, 2017-03)

The analysis of Proxima Centauri's radial velocities recently led Anglada-Escudé et al. to claim the presence of a low-mass planet orbiting the Sun's nearest star once every 11.2 days. Although the a priori ...
AZEuS: An Adaptive Zone Eulerian Scheme for Computational MHD

Ramsey, Jon P.; Clarke, David C.; Men'Shchikov, Alexander B. (Cornell University Library, arXiv.org, 2012-03)

A new adaptive mesh refinement (AMR) version of the ZEUS-3D astrophysical magnetohydrodynamical (MHD) fluid code, AZEuS, is described. The AMR module in AZEuS has been completely adapted to the staggered mesh that characterises ...
Ecothermic Responses of Moose (Alces Alces) to Thermoregulatory Stress on Mainland Nova Scotia

Broders, Hugh G.; Coombs, Andrea B.; McCarron, J.R, (Thunder Bay Ont.: North American Moose Conference and Workshop, 1981-, 2012-06-22)

The size of the mainland Nova Scotia moose (Alces alces) population has declined pre-cipitously over the last several decades and their current distribution is discontinuous. In recognition of the state of its moose ...
Concerning the Distance to the Center of the Milky Way and Its Structure

Majaess, Daniel J. (Copernicus Foundation for Polish Astronomy, 2010-01-20)

The distance to the Galactic center inferred from OGLE RR Lyrae variables observed in the direction of the bulge is R₀ = 8.1 ± 0.6 kpc. An accurate determination ofR₀ is ...
Tree-based intercropping does not compromise canola (Brassica napus L.) seed oil yield and reduces soil nitrous oxide emissions

Vessey, Joseph Kevin (Elsevier B.V, 2010-07-31)

Recent concerns over rising oil prices and greenhouse gas emissions have sparked an interest for the production of first generation biofuels on marginal agricultural land in Eastern Canada. Field trials were ...
Non-LTE Stellar Population Synthesis of Globular Clusters Using Synthetic Integrated Light Spectra. I. Constructing the IL Spectra

Young, Mitchell E.; Short, Ian C. (The American Astronomical Society, 2017-02-01)

We present an investigation of the globular cluster population synthesis method of McWilliam & Bernstein, focusing on the impact of non-LTE (NLTE) modeling effects and color-magnitude diagram (CMD) discretization. ...
Simulating Protostellar Jets Simultaneously at Launching and Observational Scales

Ramsey, Jon P.; Clarke, David A. (The American Astronomical Society, 2011-02-10)

We present the first 2.5-dimensional magnetohydrodynamic (MHD) simulations of protostellar jets that include both the region in which the jet is launched magnetocentrifugally at scale lengths <0.1 AU and where the ...
Targeting butyrylcholinesterase for preclinical single photon emission computed tomogrpahy (SPECT) imaging of Alzheimer's disease

DeBay, Drew R.; Reid, George A.; Pottie, Ian R.; Martin, Earl; Bowen, Chris V.; Darvesh, Sultan (Wiley Online Library Journals Frontfile Complete, 2017-06)

Abstract Introduction Diagnosis of Alzheimer's disease (AD) in vivo , by molecular imaging of amyloid or tau, is constrained because similar changes can be found in brains of cognitively normal individuals. Butyrylcholinesterase ...
The Canada-France Imaging Survey: First Results from the u-Band Component

Ibata, Rodrigo; McConnachie, Alan; Cuillandre, Jean-Charles; Fantin, Nicholas; Haywood, Misha; Caffau, Elisabetta; Carlberg, Raymond; Côté, Patrick; Cabanac, Rémi; Sawicki, Marcin, 1969- (The American Astronomical Society, 2017-10-20)

The Canada-France Imaging Survey (CFIS) will map the northern high Galactic latitude sky in the u-band ("CFIS-u," 10,000 deg²) and in the r-band ("CFIS-r," 5000 deg²), ...
The Cepheids of Centaurus A (NGC 5128) and Implications for H₀

Majaess, Daniel J. (Copernicus Foundation for Polish Astronomy (Poland), 2010-06-30)

A VI Wesenheit and period-colour analysis based on new OGLE observations reaffirms Ferrarese et al. discovery of 5 Type II Cepheids in NGC 5128. The distance to that comparatively unreddened population ...
The CFHQSIR survey: a Y-band extension of the CFHTLS-Wide survey

Pipien, S.; Basa, S.; Cuby, J.G.; Cuillandre, J.C.; Willott, C.; Moutard, Thibaud; Chatron, J.; Arnouts, S.; Hudelot, P. (EDP Sciences, 2018-08)

Context. The Canada–France–Hawaii Telescope Legacy Survey (CFHTLS) has been conducted over a 5-yr period at the CFHT with the MegaCam instrument, totaling 450 nights of observations. The Wide Synoptic Survey is one component ...
The Emergence of the Infrared Transient VVV-WIT-06*

Minniti, D.; Saito, R.K.; Forster, F.; Pignata, G.; Ivanov, V.D.; Lucas, P.W.; Beamin, J.C.; Borissova, J.; Catelan, M.; Majaess, Daniel J. (IOP Publishing, 2017-11-10)

We report the discovery of an enigmatic large-amplitude (ΔKs > 10.5 mag) transient event in near-IR data obtained by the VISTA Variables in the Via Lactea (VVV) ESO Public Survey. The object ...
The VIMOS Public Extragalactic Redshift Survey (VIPERS) Downsizing of the blue cloud and the influence of galaxy size on mass quenching over the last eight billion years

Haines, C.P.; Iovino, A.; Krywult, J.; Guzzo, L.; Davidzon, I.; Bolzonella, M.; Garilli, B.; Scodeggio, M.; Granett, B.R.; Moutard, Thibaud (EDP Sciences, 2017-09)

We use the full VIPERS redshift survey in combination with SDSS-DR7 to explore the relationships between star-formation history (using d4000), stellar mass and galaxy structure, and how these relationships have evolved ...
The VIMOS Public Extragalactic Redshift Survey (VIPERS) Environment-size relation of massive passive galaxies at 0.5 <= z <= 0.8

Gargiulo, A.; Cucciati, O.; Garilli, B.; Scodeggio, M.; Bolzonella, M.; Zamorani, G.; De Lucia, G.; Krywult, J.; Guzzo, L.; Moutard, Thibaud (EDP Sciences, 2019-11)

We use the unparalleled statistics of the VIPERS survey to investigate the relation between the surface mean stellar mass density Σ = ℳ/(2 π R e 2 ) of massive passive galaxies (MPGs, ℳ ≥ 10 11 M ⊙ ) and their local ...
The First Post-Kepler Brightness Dips of KIC 8462852

Boyajin, Tabitha S.; Alonso, Roi; Armstrong, David; Barkaoui, K.; Benkhaldoun, Z.; Benni, Paul; Bentley, Rory O.; Berdyugin, Andrei; Berdyugina, Svetlana; Lane, David (The American Astronomical Society, 2018-01-03)

We present a photometric detection of the first brightness dips of the unique variable star KIC 8462852 since the end of the Kepler space mission in 2013 May. Our regular photometric surveillance started ...
The VIMOS Public Extragalactic Redshift Survey (VIPERS) AGN feedback in [NeV] emitters

Vergani, D.; Garilli, B.; Poletta, M.; Franzetti, P.; Scodeggio, M.; Zamorani, G.; Haines, C.P.; Bolzonella, M.; Guzzo, L.; Moutard, Thibaud (EDP Sciences, 2018-12)

Aims. We analyse the properties of the host galaxies of a [NeV]-selected sample to investigate whether and how they are affected by the AGN. Methods. We have selected a sample of galaxies at 0.62 < z < 1.2 from the ...