Eduardo Hardy

The Arecibo Legacy Fast ALFA Survey VII: A Neutral Hydrogen Cloud Complex in the Virgo Cluster (2008)

Kent, Brian R., Spekkens, Kristine, Giovanelli, Riccardo, Haynes, Martha P., Momjian, Emmanuel, Cortes, Juan R., ...

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...

Distances from Stellar Kinematics for Peculiar Virgo Cluster Spiral Galaxies (2008)

Cortes, Juan R., Kenney, Jeffrey D. P., Hardy, Eduardo

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...

The Chemical Enrichment History of the Large Magellanic Cloud (2007)

Carrera, Ricardo, Gallart, Carme, Hardy, Eduardo, Aparicio, Antonio, Zinn, Robert

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\@...

The H$_{2}$ density within spiral and irregular galaxies at high redshift: estimating CO detection limits (2007)

Mollá, Mercedes, Hardy, Eduardo, Díaz, '{A}ngeles I.

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...

The Chemical Enrichment History of the Fornax Dwarf Spheroidal Galaxy from the Infrared Calcium Triplet (2006)

Pont, Frederic, Zinn, Robert, Gallart, Carme, Hardy, Eduardo, Winnick, Rebeccah

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...

Shrinking of cluster ellipticals: A tidal stripping explanation and implications for the intracluster light (2006)

Cypriano, Eduardo S., Sodre, Laerte, Campusano, Luis E., Dale, Daniel A., Hardy, Eduardo

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...

Stellar and Ionized Gas Kinematics of Peculiar Virgo Cluster Galaxies (2006)

Cortes, Juan R., Kenney, Jeffrey D. P., Hardy, Eduardo

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...

Shrinking of Cluster Ellipticals: a Tidal Stripping explanation and Implications for the Intra-Cluster Light (2006)

Cypriano, Eduardo S., Sodré Jr., Laerte, Campusano, Luis E., Dale, Daniel A., Hardy, Eduardo

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...

The nature of the peculiar Virgo Cluster galaxies NGC 4064 and NGC 4424 (2006)

Cortés, Juan R., Kenney, Jeffrey D. P., Hardy, Eduardo

Using extensive kinematical and morphological data on two Virgo Cluster galaxies undergoing strong nuclear star formation, we show that ram pressure stripping and gravitational interactions can act...

The Chemical Enrichment History of the Fornax Dwarf Spheroidal Galaxy from the Infrared Calcium Triplet (2003)

Pont, Frederic, Zinn, Robert, Gallart, Carme, Hardy, Eduardo, Winnick, Rebeccah

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...

The Chemical Enrichment History of the Fornax Dwarf Spheroidal Galaxy from the Infrared Calcium Triplet (2003)

Pont, Frederic, Zinn, Robert, Gallart, Carme, Hardy, Eduardo, Winnick, Rebeccah

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...

The Chemical Enrichment History of the Fornax Dwarf Spheroidal Galaxy from the Infrared Calcium Triplet (2003)

Pont, Frederic, Zinn, Robert, Gallart, Carme, Hardy, Eduardo, Winnick, Rebeccah

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...

New Understanding of Large Magellanic Cloud Structure, Dynamics and Orbit from Carbon Star Kinematics (2002)

Van Der Marel, Roeland P., Alves, David R., Hardy, Eduardo, Suntzeff, Nicholas B.

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...

The Stellar Populations in spiral disks.III. Constraining their evolutionary histories (2002)

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....

The Evolution of Stellar Populations (2001)

Diaz, Angeles, Hardy, Eduardo

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...

Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent (2000)

Dale, Daniel A., Giovanelli, Riccardo, Haynes, Martha P., Hardy, Eduardo, Campusano, Luis E.

The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation...

The velocity dispersion of LMC Carbon stars: possible detection of a kinematically distinct population (1999)

Graff, David S., Gould, Andrew P., Suntzeff, Nicholas, Schommer, Robert A., Hardy, Eduardo

We analyze the velocity residuals of 551 carbon stars relative to a rotating-disk model of the inner $\sim 70 \rm deg^2$ of the Large Magellanic Cloud (LMC). We find that the great majority of the...

Seeking the Local Convergence Depth. V. Tully-Fisher Peculiar Velocities for 52 Abell Clusters (1999)

Dale, Daniel A., Giovanelli, Riccardo, Haynes, Martha P., Campusano, Luis E., Hardy, Eduardo

We have obtained I band Tully-Fisher (TF) measurements for 522 late-type galaxies in the fields of 52 rich Abell clusters distributed throughout the sky between 50 and 200\h Mpc. Here we estimate...

Seeking the Local Convergence Depth. IV. Tully-Fisher Observations of 35 Abell Clusters (1999)

Dale, Daniel A., Giovanelli, Riccardo, Haynes, Martha P., Hardy, Eduardo, Campusano, Luis E.

We present Tully-Fisher observations for 35 rich Abell clusters of galaxies. Results from I band photometry and optical rotation curve work comprise the bulk of this paper. This is the third such...

No Hubble Bubble in the Local Universe (1999)

Giovanelli, R., Dale, Daniel, Haynes, Martha, Hardy, Eduardo, Campusano, Luis

Zehavi et al. (1998) have suggested that the Hubble flow within 70/h Mpc may be accelerated by the existence of a void centered on the Local Group. Its underdensity would be ~20 %, which would result...

Seeking the Local Convergence Depth. The Abell Cluster Dipole Flow to 200 Mpc/h (1998)

Dale, Daniel A., Giovanelli, Riccardo, Haynes, Martha P., Campusano, Luis E., Hardy, Eduardo, Borgani, Stefano

We have obtained new Tully-Fisher (TF) peculiar velocity measurements for 52 Abell galaxy clusters distributed throughout the sky between ~ 50 and 200 Mpc/h.The measurements are based on I band...

Gravitational lensing in low-redshift clusters of galaxies: the arc-like object in Abell 3408 and its lensing interpretation (1997)

Campusano, Luis E., Kneib, Jean-Paul, Hardy, Eduardo

We analyze the seldomly discussed lensing effects expected in low-z clusters (z = 0.05-0.15), using as an example the bright arc (z=0.073) discovered by Campusano and Hardy(1996) near the dominant cD...

Seeking the Local Convergence Depth. II. TF Observations of the Clusters A114, A119, A194, A2295, A2457, A2806, A3193, A3381, AND A3744 (1997)

Dale, Daniel A., Giovanelli, Riccardo, Haynes, Martha P., Scodeggio, Marco, Hardy, Eduardo, Campusano, Luis E.

We present Tully-Fisher (TF) observations for nine rich Abell clusters of galaxies. This is the second such data installment of an all-sky survey of 50 clusters in the redshift range 0.02 < z < 0.06....

Seeking the Local Convergence Depth. I. TF Observations of the Clusters A168, A397, A569, A1139, A1228, and A1983 (1997)

Dale, Daniel A., Giovanelli, Riccardo, Haynes, Martha P., Scodeggio, Marco, Hardy, Eduardo, Campusano, Luis E.

We present first results of an all-sky observing program designed to improve the quality of the I band Tully-Fisher (TF) template and to obtain the reflex motion of the Local Group with respect to...

A database for galaxy evolution modeling (1996)

Leitherer, Claus, Alloin, Danielle, Alvensleben, Uta Fritze-V, Gallagher, John, Huchra, John, Matteucci, Francesca, ...

This paper represents a collective effort to provide an extensive electronic database useful for the interpretation of galaxy properties.

A database for galaxy evolution modeling (1996)

Leitherer, Claus, Alloin, Danielle, Alvensleben, Uta Fritze-V, Gallagher, John, Huchra, John, Matteucci, Francesca, ...

This paper represents a collective effort to provide an extensive electronic database useful for the interpretation of galaxy properties.

A database for galaxy evolution modeling (1996)

Leitherer, Claus, Alloin, Danielle, Alvensleben, Uta Fritze-V, Gallagher, John, Huchra, John, Matteucci, Francesca, ...

This paper represents a collective effort to provide an extensive electronic database useful for the interpretation of galaxy properties.

A database for galaxy evolution modeling (1996)

Leitherer, Claus, Alloin, Danielle, Alvensleben, Uta Fritze-V, Gallagher, John, Huchra, John, Matteucci, Francesca, ...

This paper represents a collective effort to provide an extensive electronic database useful for the interpretation of galaxy properties.