output
19962026
most citedGaia Data Release 2. Summary of the contents and survey properties

8.6k citations

Showing 2008Show all

29 papers · 1 filter

astro-ph2008★ 42 cited

The Role of Massive Agb Stars in the Early Solar System Composition

Josep M. Trigo-Rodriguez, Domingo Anibal Garcia-Hernandez, Maria Lugaro +4

We demonstrate that a massive asymptotic giant branch (AGB) star is a good candidate as the main source of short-lived radionuclides in the early solar system. Recent identificatio…

astro-ph2008★ 92 cited

Optimal filter systems for photometric redshift estimation

N. Benitez, M. Moles, J. A. L. Aguerri +18

In the next years, several cosmological surveys will rely on imaging data to estimate the redshift of galaxies, using traditional filter systems with 4-5 optical broad bands; narro…

astro-ph2008★ 58 cited

Axions and the white dwarf luminosity function

J. Isern, S. Catalan, E. Garcia-Berro +1

The evolution of white dwarfs can be described as a simple cooling process. Recently, it has been possible to determine with an unprecedented precision their luminosity function, t…

astro-ph2008★ 7 cited

On the origin of white dwarfs with carbon-dominated atmospheres: the case of H1504+65

L. G. Althaus, A. H. Córsico, S. Torres +1

We explore different evolutionary scenarios to explain the helium deficiency observed in H1504+65, the most massive known PG1159 star. We concentrate mainly on the possibility that…

astro-ph2008★ 19 cited

MAGIC upper limits to the VHE gamma-ray flux of 3C454.3 in high emission state

H. Anderhub, S. Vercellone, I. Donnarumma +2

We report upper limits to the very high energy flux (E>100 GeV) of the flat spectrum radio quasar 3C454.3 (z=0.859) derived by the Cherenkov telescope MAGIC during the high states…

astro-ph2008★ 82 cited

CMBPol Mission Concept Study: Prospects for polarized foreground removal

J. Dunkley, A. Amblard, C. Baccigalupi +28

In this report we discuss the impact of polarized foregrounds on a future CMBPol satellite mission. We review our current knowledge of Galactic polarized emission at microwave freq…

astro-ph2008★ 71 cited

The Impact of Uncertainties in Reaction Q-values on Nucleosynthesis in Type I X-Ray Bursts

A. Parikh, J. Jose, C. Iliadis +2

Nucleosynthesis in Type I X-ray bursts may involve up to several thousand nuclear processes. The majority of these processes have only been determined theoretically due to the lack…

astro-ph2008★ 17 cited

Revisiting the theoretical DBV (V777 Her) instability strip: the MLT theory of convection

A. H. Córsico, L. G. Althaus, M. M. Miller Bertolami +1

We reexamine the theoretical instability domain of pulsating DB white dwarfs (DBV or V777 Her variables). We performed an extensive -mode nonadiabatic pulsation analysis of DB e…

astro-ph2008★ 20 cited

Axisymmetric smoothed particle hydrodynamics with self-gravity

D. Garcia-Senz, A. Relano, R. M. Cabezon +1

The axisymmetric form of the hydrodynamic equations within the smoothed particle hydrodynamics (SPH) formalism is presented and checked using idealized scenarios taken from astroph…

astro-ph2008★ 188 cited

Absolute properties of the low-mass eclipsing binary CM Draconis

J. C. Morales, I. Ribas, C. Jordi +12

Spectroscopic and eclipsing binary systems offer the best means for determining accurate physical properties of stars, including their masses and radii. The data available for low-…

astro-ph2008★ 60 cited

Discovery of a very high energy gamma-ray signal from the 3C 66A/B region

MAGIC Collaboration, E. Aliu

The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 h in 2007 August-December. The observations resulted in the discovery of a gamma-ray source at ene…

astro-ph2008

Accreting White Dwarfs

M. Hernanz, J. Jose

Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact scenario leading to these explosions is still unclear. An important step to clarify this…

astro-ph2008★ 71 cited

A one-parameter family of interpolating kernels for Smoothed Particle Hydrodynamics studies

Ruben M. Cabezon, Domingo Garcia-Senz, Antonio Relaño

A set of interpolating functions of the type f(v)={(sin[v pi/2])/(v pi/2)}^n is analyzed in the context of the smoothed-particle hydrodynamics (SPH) technique. The behaviour of the…

astro-ph2008★ 9 cited

Proper Motions of Thermal Radio Sources near HH 7-11 in the NGC 1333 Star Forming Region

C. Carrasco-Gonzalez, G. Anglada, L. F. Rodriguez +2

Star forming regions are expected to show linear proper motions due to the relative motion of the Sun with respect to the region. These proper motions appear superposed to the prop…

astro-ph2008★ 12 cited

High Angular Resolution Observations at 7-mm of the Core of the Quadrupolar HH 111/121 Outflow

L. F. Rodriguez, J. M. Torrelles, G. Anglada +1

We present sensitive, high angular resolution () VLA continuum observations made at 7 mm of the core of the HH 111/121 quadrupolar outflow. We estimate that at this…

hep-th2008★ 1 cited

SL(2,R) matrix model and supersymmetric Yang-Mills integrals

Miguel Tierz

The density of states of Yang-Mills integrals in the supersymmetric case is characterized by power-law tails whose decay is independent of N, the rank of the gauge group. It is bel…

astro-ph2008★ 164 cited

The ALHAMBRA Project: A large area multi medium-band optical and NIR photometric survey

M. Moles, N. Benítez, J. A. L. Aguerri +18

(ABRIDGED) We describe the first results of the ALHAMBRA survey which provides cosmic tomography of the evolution of the contents of the Universe over most of Cosmic history. Our a…

astro-ph2008★ 7 cited

The Sensitivity of Nucleosynthesis in Type I X-ray Bursts to Thermonuclear Reaction-Rate Variations

Anuj Parikh, Jordi Jose, Fermin Moreno +1

We examine the sensitivity of nucleosynthesis in Type I X-ray bursts to variations in nuclear rates. As a large number of nuclear processes are involved in these phenomena -with th…

astro-ph2008★ 111 cited

Periodic very high energy gamma-ray emission from LS I +61 303 observed with the MAGIC telescope

MAGIC Collaboration, J. Albert

The MAGIC collaboration has recently reported the discovery of gamma-ray emission from the binary system LS I +61 303 in the TeV energy region. Here we present new observational re…

astro-ph2008★ 180 cited

Axions and the cooling of white dwarf stars

J. Isern, E. Garcia-Berro, S. Torres +1

White dwarfs are the end-product of the lifes of intermediate- and low-mass stars and their evolution is described as a simple cooling process. Recently, it has been possible to de…

astro-ph2008★ 82 cited

The End of Amnesia: A New Method for Measuring the Metallicity of Type Ia Supernova Progenitors Using Manganese Lines in Supernova Remnants

Carles Badenes, Eduardo Bravo, John P. Hughes

We propose a new method to measure the metallicity of Type Ia supernova progenitors using Mn and Cr lines in the X-ray spectra of young supernova remnants. We show that the Mn to C…

hep-th2008★ 103 cited

F(R) gravity equation of state

Emilio Elizalde, Pedro J. Silva

The gravity field equations are derived as an equation of state of local space-time thermodynamics. Jacobson's arguments are non-trivially extended, by means of a more…

astro-ph2008★ 244 cited

The initial-final mass relationship of white dwarfs revisited: effect on the luminosity function and mass distribution

S. Catalan, J. Isern, E. Garcia-Berro +1

The initial-final mass relationship connects the mass of a white dwarf with the mass of its progenitor in the main-sequence. Although this function is of fundamental importance to…

astro-ph2008★ 12 cited

The contribution of red dwarfs and white dwarfs to the halo dark matter

S. Torres, J. Camacho, J. Isern +1

The nature of the several microlensing events observed by the MACHO team towards the LMC still remains controversial. Low-mass substellar objects and stars with masses larger than…