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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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309 papers · 1 filter
The Planetary Nebulae Population in the Nuclear Regions of M31: the SAURON view
Nicola Pastorello, Marc Sarzi, Michele Cappellari +5
Following a first study of the central regions of M32 that illustrated the power of integral-field spectroscopy (IFS) in detecting and measuring the [O III]λ5007 emission of PNe ag…
Diffuse light in the young cluster of galaxies CL J1449+0856 at z=2.07
C. Adami, F. Durret, L. Guennou +1
Cluster properties do not seem to be changing significantly during their mature evolution phase, for example they do not seem to show strong dynamical evolution at least up to z~0.…
The LF of TP-AGB stars in the LMC and SMC
Gustavo Bruzual, Stephane Charlot, Rosa Gonzalez Lopezlira +3
We show that Montecarlo simulations of the TP-AGB stellar population in the LMC and SMC galaxies using the CB* models produce LF and color distributions that are in closer agreemen…
The UV Luminosity Function of star-forming galaxies via dropout selection at redshifts z ~ 7 and 8 from the 2012 Ultra Deep Field campaign
Matthew A. Schenker, Brant E. Robertson, Richard S. Ellis +13
We present a catalog of high redshift star-forming galaxies selected to lie within the redshift range z ~ 7-8 using the Ultra Deep Field 2012 (UDF12), the deepest near-infrared (ne…
Evolution of the Sizes of Galaxies over 7<z<12 Revealed by the 2012 Hubble Ultra Deep Field Campaign
Yoshiaki Ono, Masami Ouchi, Emma Curtis-Lake +14
We analyze the redshift- and luminosity-dependent sizes of dropout galaxy candidates in the redshift range z~7-12 using deep images from the UDF12 campaign, data which offers two d…
CFHTLenS tomographic weak lensing: Quantifying accurate redshift distributions
Jonathan Benjamin, Ludovic Van Waerbeke, Catherine Heymans +18
The Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) comprises deep multi-colour (u*g'r'i'z') photometry spanning 154 square degrees, with accurate photometric redshifts an…
Dynamical analysis of strong-lensing galaxy groups at intermediate redshift
R. P. Muñoz, V. Motta, T. Verdugo +8
We present VLT spectroscopic observations of 7 discovered galaxy groups between 0.3<z<0.7. The groups were selected from the Strong Lensing Legacy Survey (SL2S), a survey that cons…
MOA-2010-BLG-073L: An M-Dwarf with a Substellar Companion at the Planet/Brown Dwarf Boundary
R. A. Street, J. -Y. Choi, Y. Tsapras +129
We present an analysis of the anomalous microlensing event, MOA-2010-BLG-073, announced by the Microlensing Observations in Astrophysics survey on 2010-03-18. This event was remark…
The 2012 Hubble Ultra Deep Field (UDF12): Observational Overview
Anton M. Koekemoer, Richard S Ellis, Ross J. McLure +15
We present the 2012 Hubble Ultra Deep Field campaign (UDF12), a large 128-orbit Cycle 19 \HST\ program aimed at extending previous WFC3/IR observations of the UDF by quadrupling th…
Clusters of galaxies and variation of the fine structure constant
Silvia Galli
We propose a new method to probe for variations in the fine structure constant alpha using clusters of galaxies, opening up a window on a new redshift range for such constraints. H…
Equivalence Principle Violation in Weakly Vainshtein-Screened Systems
Alexander V. Belikov, Wayne Hu
Massive gravity, galileon and braneworld models that modify gravity to explain cosmic acceleration utilize the nonlinear field interactions of the Vainshtein mechanism to screen fi…
Next-to-next-to-leading order spin-orbit effects in the near-zone metric and precession equations of compact binaries
Alejandro Bohé, Sylvain Marsat, Guillaume Faye +1
We extend our previous work devoted to the computation of the next-to-next-to-leading order spin-orbit correction (corresponding to 3.5PN order) in the equations of motion of spinn…
HeII emitters in the VIMOS VLT Deep Survey: PopIII star formation or peculiar stellar populations in galaxies at 2<z<4.6?
P. Cassata, O. Le Fevre, S. Charlot +15
The aim of this work is to identify HeII emitters at 2<z<4.6 and to constrain the source of the hard ionizing continuum that powers the HeII emission. We have assembled a sample of…
A new multi-field determination of the galaxy luminosity function at z=7-9 incorporating the 2012 Hubble Ultra Deep Field imaging
R. J. McLure, J. S. Dunlop, R. A. A. Bowler +14
We present a new determination of the UV galaxy luminosity function (LF) at redshift z ~ 7 and z ~ 8, and a first estimate at z ~ 9. An accurate determination of the form and evolu…
Neutron-star mergers in scalar-tensor theories of gravity
Enrico Barausse, Carlos Palenzuela, Marcelo Ponce +1
Scalar-tensor theories of gravity are natural phenomenological alternatives to General Relativity, where the gravitational interaction is mediated by a scalar degree of freedom, be…
CFHTLenS: Testing the Laws of Gravity with Tomographic Weak Lensing and Redshift Space Distortions
Fergus Simpson, Catherine Heymans, David Parkinson +20
Dark energy may be the first sign of new fundamental physics in the Universe, taking either a physical form or revealing a correction to Einsteinian gravity. Weak gravitational len…
Time-dependent spherically symmetric covariant Galileons
Eugeny Babichev, Gilles Esposito-Farese
We study spherically symmetric solutions of the cubic covariant Galileon model in curved spacetime in presence of a matter source, in the test scalar field approximation. We show t…
Slowly rotating black holes in Horava-Lifshitz gravity
Enrico Barausse, Thomas P. Sotiriou
In a recent paper we claimed that there there are no slowly rotating, stationary, axisymmetric black holes in the infrared limit of Horava-Lifshitz gravity, provided that they are…
The CO-to-H2 Conversion Factor and Dust-to-Gas Ratio on Kiloparsec Scales in Nearby Galaxies
K. M. Sandstrom, A. K. Leroy, F. Walter +42
We present kiloparsec (kpc) spatial resolution maps of the CO-to-H2 conversion factor (alpha_co) and dust-to-gas ratio (DGR) in 26 nearby, star-forming galaxies. We have simultaneo…
The UV continua and inferred stellar populations of galaxies at z ~ 7 - 9 revealed by the Hubble Ultra Deep Field 2012 campaign
J. S. Dunlop, A. B. Rogers, R. J. McLure +16
We use the new ultra-deep, near-infrared imaging of the Hubble Ultra-Deep Field (HUDF) provided by our UDF12 HST WFC3/IR campaign to explore the rest-frame UV properties of galaxie…
Scientific verification of Faraday Rotation Modulators: Detection of diffuse polarized Galactic emission
S. Moyerman, E. Bierman, P. A. R. Ade +28
The design and performance of a wide bandwidth linear polarization modulator based on the Faraday effect is described. Faraday Rotation Modulators (FRMs) are solid-state polarizati…
GRB emission in Neutron Star transitions
M. Angeles Perez-Garcia, Frederic Daigne, Joseph Silk
In this contribution we briefly introduce a mechanism for short gamma ray burst emission different from the usually assumed compact object binary merger progenitor model. It is bas…
The Abundance of Star-Forming Galaxies in the Redshift Range 8.5 to 12: New Results from the 2012 Hubble Ultra Deep Field Campaign
Richard S Ellis, Ross J McLure, James S Dunlop +13
We present the results of the deepest search to date for star-forming galaxies beyond a redshift z~8.5 utilizing a new sequence of near-infrared Wide Field Camera 3 images of the H…
Trans-Planckian Issues for Inflationary Cosmology
Robert Brandenberger, Jerome Martin
The accelerated expansion of space during the period of cosmological inflation leads to trans-Planckian issues which need to be addressed. Most importantly, the physical wavelength…