88 citations · 436 across the 11 of their papers we have counts for
11 papers
Constraining the shape of dark matter haloes using only starlight. I. A new technique and its application to the galaxy Nube
Jorge Sanchez Almeida, Ignacio Trujillo, Mireia Montes +1
We present a new technique to constrain the gravitational potential of a galaxy from the observed stellar mass surface density alone under a number of assumptions. It uses the clas…
Massive Clumps in Local Galaxies: Comparisons with High-Redshift Clumps
Bruce G. Elmegreen, Debra Meloy Elmegreen, Jorge Sanchez Almeida +5
Local UV-bright galaxies in the Kiso survey include clumpy systems with kpc-size star complexes that resemble clumpy young galaxies in surveys at high redshift. We compare clump ma…
Qualitative interpretation of galaxy spectra
J. Sanchez Almeida, R. Terlevich, E. Terlevich +2
We describe a simple step-by-step guide to qualitative interpretation of galaxy spectra. Rather than an alternative to existing automated tools, it is put forward as an instrument…
Center-to-limb variation of the area covered by magnetic bright points in the quiet Sun
J. A. Bonet, I. Cabello, J. Sanchez Almeida
CONTEXT: The quiet Sun magnetic fields produce ubiquitous bright points (BPs) that cover a significant fraction of the solar surface. Their contribution to the total solar irradian…
Relationship between Hubble type and spectroscopic class in local galaxies
J. Sanchez Almeida, J. A. L. Aguerri, C. Munoz-Tunon +1
We compare the Hubble type and the spectroscopic class of the galaxies with spectra in SDSS/DR7. As it is long known, elliptical galaxies tend to be red whereas spiral galaxies ten…
Automatic unsupervised classification of all SDSS/DR7 galaxy spectra
J. Sanchez Almeida, J. A. L. Aguerri, C. Munoz-Tunon +1
Using the 'k-means' cluster analysis algorithm, we carry out an unsupervised classification of all galaxy spectra in the seventh and final Sloan Digital Sky Survey data release (SD…