output
19972026
most citedThe Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package

5k citations

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Showing 1998Show all

8 papers · 1 filter

astro-ph1998★ 118 cited

Optical Light Curve of the Type Ia Supernova 1998bu in M96 and the Supernova Calibration of the Hubble Constant

Nicholas B. Suntzeff, M. M. Phillips, R. Covarrubias +15

We present the UBVRI light curves of the Type Ia supernova SN 1998bu which appeared in the nearby galaxy M96 (NGC 3368). M96 is a spiral galaxy in the Leo I group which has a Cephe…

astro-ph1998★ 14 cited

Quasar-galaxy and AGN-galaxy cross-correlations

H. J. Martinez, M. E. Merchan, C. A. Valotto +1

We compute quasar-galaxy and AGN-galaxy cross-correlation functions for samples taken from the \cite{VCV98} catalog of quasars and active galaxies, using tracer galaxies taken from…

astro-ph1998★ 66 cited

The Stellar Populations of NGC 3109: Another Dwarf Irregular Galaxy with a Population II Stellar Halo

Dante Minniti, Albert Zijlstra, M. Victoria Alonso

We have obtained V and I-band photometry for about 17500 stars in the field of the dwarf irregular galaxy NGC3109, located in the outskirts of the Local Group. The photometry allow…

astro-ph1998★ 151 cited

Cluster vs. Field Elliptical Galaxies and Clues on their Formation

Mariangela Bernardi, Alvio Renzini, Luiz N. da Costa +6

Using new observations for a sample of 931 early-type galaxies we investigate whether the \mg2--\so relation shows any dependence on the local environment. The galaxies have been a…

astro-ph1998★ 3 cited

Effects of Distance Uncertainties on Determinations of the Galaxy Peculiar Velocity Field

Nelson Padilla, Manuel Merchán, Diego G. Lambas

Our statistical studies comprise the mean relative velocity and velocity correlation for pairs of galaxies as a function of separation, and a bulk flow analysis determined on spher…

astro-ph1998★ 23 cited

Galaxy Luminosity Function in Groups

Hernán Muriel, Carlos A. Valotto, Diego G. Lambas

We compute the luminosity function of galaxies in groups. The data consists in two samples of groups of galaxies selected in distance and redshift space comprising a total number o…