Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Hardy, Eduardo"'
Autor:
Kent, Brian R., Spekkens, Kristine, Giovanelli, Riccardo, Haynes, Martha P., Momjian, Emmanuel, Cortes, Juan R., Hardy, Eduardo, West, Andrew A.
Publikováno v:
Astrophys.J.691:1595-1610,2009
We present observations of an HI cloud complex most likely located in the Virgo galaxy cluster, first reported by Kent et al. (2007). The complex consists of five clouds, detected in the data set of the ALFALFA extragalactic HI survey at Arecibo. The
Externí odkaz:
http://arxiv.org/abs/0810.3571
We present distance estimates for eleven peculiar Virgo cluster spiral galaxies based on measurements of the stellar kinematics of their central 2 kpc. Stellar circular velocities were obtained using two-integral dynamical models. Distances were obta
Externí odkaz:
http://arxiv.org/abs/0803.3638
Ca II triplet spectroscopy has been used to derive stellar metallicities for individual stars in four LMC fields situated at galactocentric distances of 3\arcdeg, 5\arcdeg, 6\arcdeg\@ and 8\arcdeg\@ to the north of the Bar. Observed metallicity distr
Externí odkaz:
http://arxiv.org/abs/0710.3076
We have computed a grid of chemical evolution models for a large set of spiral and irregular theoretical galaxies of different total mass. In our models, the gas phase has two components, the diffuse and the molecular one ($\rm H_{2}$). It is possibl
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701693
We present the results of the stellar and ionized gas kinematics of 13 bright peculiar Virgo cluster galaxies. The stellar velocity field are mostly consistent with a rotation pattern, but some of them shows interesting features such as; S-shaped ste
Externí odkaz:
http://arxiv.org/abs/astro-ph/0602627
Publikováno v:
Astron.J.131:2417-2425,2006
We look for evidence of tidal stripping in elliptical galaxies through the analysis of homogeneous CCD data corresponding to a sample of 228 elliptical galaxies belonging to 24 clusters of galaxies at $0.015
Externí odkaz:
http://arxiv.org/abs/astro-ph/0602019
Near infrared spectra were obtained for 117 red giants in the Fornax dwarf spheroidal galaxy with the FORS1 spectrograph on the VLT, in order to study the metallicity distribution of the stars and to lift the age-metallicity degeneracy of the red gia
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310870
Publikováno v:
Astron.J.124:2639-2663,2002
We derive general expressions for the LMC velocity field which we fit to kinematical data for 1041 carbon stars. We demonstrate that all previous studies of LMC kinematics have made unnecessary over-simplifications that have led to incorrect estimate
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205161
Autor:
Molla, Mercedes, Hardy, Eduardo
We study the old problem of the uniqueness of chemical evolution models by analyzing a set of multiphase models for the galaxy NGC 4303 computed for a variety of plausible physical input parameters. Our aim is to determine if the input parameters may
Externí odkaz:
http://arxiv.org/abs/astro-ph/0203399
Autor:
Diaz, Angeles, Hardy, Eduardo
Publikováno v:
Astrophys.Space Sci. 277 (2001) 361-368
We summarize the discussion section on ``Evolution of Stellar Populations'' we led on May 27, 2000 in Granada, Spain, as part of the Euroconference on The Evolution of Galaxies. I- Observational Clues. We also provide a partial comparison between the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0103221