Galaxy formation and evolution: publications

Optical spectroscopy of two overlapping, flux-density-limited samples of radio sources in the North Ecliptic Cap, selected at 38 MHz and 151 MHz

(1999)

Authors:

Mark Lacy, Steve Rawlings, Gary J Hill, Andrew J Bunker, Susan E Ridgway, Daniel Stern

The unusual afterglow of GRB 980326: evidence for the gamma-ray burst/supernova connection

(1999)

Authors:

JS Bloom, SR Kulkarni, SG Djorgovski, AC Eichelberger, P Cote, JP Blakeslee, SC Odewahn, FA Harrison, DA Frail, AV Filippenko, DC Leonard, AG Riess, H Spinrad, D Stern, A Bunker, A Dey, SA Stanford, B Grossan, S Perlmutter, RA Knop, IM Hook, M Feroci

The Bulge-Disk Orthogonal Decoupling in Galaxies: NGC 4698

(1999)

Authors:

F Bertola, EM Corsini, JC Vega Beltran, A Pizzella, M Sarzi, M Cappellari, JG Funes

Bar Diagnostics in Edge-On Spiral Galaxies. II. Hydrodynamical Simulations

(1999)

Authors:

E Athanassoula, M Bureau

Objects in NGC 205 resolved into stellar associations by hubble space telescope ultraviolet imaging

Astrophysical Journal 515:1 PART 2 (1999) L17-L20

Authors:

M Cappellari, F Bertola, D Burstein, LM Buson, L Greggio, A Renzini

Abstract:

We have obtained high-resolution UV images with the Hubble Space Telescope/Wide-Field Planetary Camera 2 of the central region of the dwarf elliptical galaxy NGC 205. Our images reveal that many of the hot UV stars previously detected and studied from the ground are actually multiple systems, open clusters, and star associations. We have performed photometry of two such clusters, and we find that our data are consistent with stellar ages of 50 and 100 Myr, respectively. From the number of massive stars in NGC 205, we estimate that the star formation episode in this galaxy has turned ∼1000 M⊙ of gas into stars over the last 100 Myr.

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