Zobrazeno 1 - 10
of 243
pro vyhledávání: '"de Carvalho, R R"'
Morphological classification of galaxies becomes increasingly challenging with redshift. We apply a hybrid supervised-unsupervised method to classify $\sim 14,000$ galaxies in the CANDELS fields at $0.2 \leq z \leq 2.4$ into spheroid, disk, and irreg
Externí odkaz:
http://arxiv.org/abs/2412.03778
In this work we improve the dynamic-evolutionary framework of two massive clusters at intermediate redshifts: Cl 0024+17 at $z \sim 0.4$ and MS 0451-03 at $z \sim 0.5$. The spectroscopic galaxy members were selected from Moran et al. (2007a), which c
Externí odkaz:
http://arxiv.org/abs/2410.19037
Autor:
Sampaio, V. M., de Carvalho, R. R., Aragón-Salamanca, A., Merrifield, M. R., Ferreras, I., Cornwell, D. J.
Galaxies infalling into clusters undergo both star-formation quenching and morphological transformation due to environmental effects. We investigate these processes and their timescales using a local sample of 20,191 cluster and 11,674 field galaxies
Externí odkaz:
http://arxiv.org/abs/2406.12273
We investigate the role that dense environments have on the quenching of star formation and the transformation of morphology for a sample of galaxies selected from the Sloan Digital Sky Survey. We make a distinction between galaxies falling into grou
Externí odkaz:
http://arxiv.org/abs/2403.07742
Autor:
Sampaio, V. M., Aragón-Salamanca, A., Merrifield, M. R., de Carvalho, R. R., Zhou, S., Ferreras, I.
We exploit a sample of 80,000 SDSS central galaxies to investigate the effect of AGN feedback on their evolution. We trace the demographics of optically-selected AGN (Seyferts) as a function of their internal properties and environment. We find that
Externí odkaz:
http://arxiv.org/abs/2307.10435
We have investigated the structure of the Hercules supercluster (SCL160) based on data originally extracted from the Sloan Digital Sky Survey SDSS-DR7. We have traced the mass distribution in the field through the numerical density-weighted by the $r
Externí odkaz:
http://arxiv.org/abs/2111.03053
We present a study of a sample of 254 clusters from the SDSS-DR7 Yang Catalog and an auxiliary sample of field galaxies to perform a detailed investigation on how galaxy quenching depends on both environment and galaxy stellar mass. Our samples are r
Externí odkaz:
http://arxiv.org/abs/2110.04342
Autor:
Sampaio, V. M., de Carvalho, R. R., Ferreras, I., Laganá, T. F., Ribeiro, A. L. B., Rembold, S. B.
By way of the projected phase-space (PPS), we investigate the relation between galaxy properties and cluster environment in a subsample of groups from the Yang Catalog. The sample is split according to the gaussianity of the velocity distribution in
Externí odkaz:
http://arxiv.org/abs/2103.03030
Autor:
Morell, D. F., Ribeiro, A. L. B., de Carvalho, R. R., Rembold, S. B., Lopes, P. A. A., Costa, A. P.
We analyze the dependence of galaxy evolution on cluster dynamical state and galaxy luminosities for a sample of 146 galaxy clusters from the Yang SDSS catalog. Clusters were split according to their velocity distribution in Gaussians (G) and Non-Gau
Externí odkaz:
http://arxiv.org/abs/2003.13836
Autor:
La Barbera, F., Vazdekis, A., Ferreras, I., Pasquali, A., Prieto, C. Allende, Martín-Navarro, I., Aguado, D. S., de Carvalho, R. R., Rembold, S., Falcón-Barroso, J., van de Ven, G.
Using new long-slit spectroscopy obtained with X-Shooter at ESO-VLT, we study, for the first time, radial gradients of optical and Near-Infrared IMF-sensitive features in a representative sample of galaxies at the very high-mass end of the galaxy pop
Externí odkaz:
http://arxiv.org/abs/1909.01382