18.1k citations
- Instituto de Astrofísica de CanariasES252 papers
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30 papers · 1 filter
Multiplicity of very low-mass objects in the Upper Scorpius OB association: a possible wide binary population
H. Bouy, E. L. Martin, W. Brandner +5
We report the initial results of a VLT/NACO high spatial resolution imaging survey for multiple systems among 58 M-type members of the nearby Upper Scorpius OB association. Nine pa…
An excess of damped Lyman alpha galaxies near QSOs
David M. Russell, Sara L. Ellison, Chris R. Benn
We present a sample of 33 damped Lyman alpha systems (DLAs) discovered in the Sloan Digital Sky Survey (SDSS) whose absorption redshifts (z_abs) are within 6000 km/s of the QSO's s…
The shaping of planetary nebula Sh 2-188 through interaction with the interstellar medium
C. J. Wareing, T. J. O'Brien, Albert A. Zijlstra +5
Sh 2-188 is an example of strong interaction between a planetary nebula (PN) and the interstellar medium (ISM). Its structure is postulated to be the result of motion through the I…
Mass Distributions of HST Galaxy Clusters from Gravitational Arcs
Julia M. Comerford, Massimo Meneghetti, Matthias Bartelmann +1
Although N-body simulations of cosmic structure formation suggest that dark matter halos have density profiles shallower than isothermal at small radii and steeper at large radii,…
On the nitrogen abundance of FLIERs: the outer knots of the planetary nebula NGC 7009
Denise R. Goncalves, ; Barbara Ercolano, ; A. Carnero +2
We have constructed a 3D photoionisation model of a planetary nebula (PN) similar in structure to NGC 7009 with its outer pair of knots (also known as FLIERs --fast, low-ionization…
B-type supergiants in the SMC: Rotational velocities and implications for evolutionary models
P. L. Dufton, R. S. I. Ryans, S. Simon-Diaz +2
High-resolution spectra for 24 SMC and Galactic B-type supergiants have been analysed to estimate the contributions of both macroturbulence and rotation to the broadening of their…