The evolution and spectra from a compact supernova remnant evolving in a high-density circumstellar medium with a density of 107cm-3 are presented. The radiation emitted by the shocked region can self-ionize the cooling shell and a large region of the surrounding medium. The resulting line ratios from the photoionized zones are similar to those
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The spectrum and evolution of compact SNR: SN and AGN.Tenorio-Tagle, G. et al.111993
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The SPLASH Survey: A Spectroscopic Analysis of the Metal-Poor, Low-Luminosity M31 dSph Satellite Andromeda X
Andromeda X (And X) is a newly discovered low-luminosity M31 dwarf spheroidal galaxy (dSph) found by Zucker et al. in the Sloan Digital Sky Survey (SDSS; York et al.). In this paper, we present the first spectroscopic study of individual red giant branch stars in And X, as a part of the Spectroscopic and Photometric Landscape of Andromeda's Stellar
Kalirai, Jason S. et al.Advertised on:
112009 -
The Star Formation History and Morphological Evolution of the Draco Dwarf Spheroidal Galaxy
The photometric and morphological properties, as well as the star formation history, of the Draco dwarf spheroidal galaxy are analyzed on the basis of wide-field CCD photometry of the resolved stars covering about 1 deg2. Draco is at a distance of d=80+/-7 kpc and has a metallicity, [Fe/H], of -1.8+/-0.2. No metallicity gradient is detected. The
Aparicio, Antonio et al.Advertised on:
112001 -
The star formation history of different types of dwarf galaxies
Not Available
Hidalgo Ramírez, S.Advertised on:
112008 -
The Star Formation History of the Local Group Dwarf Elliptical Galaxy NGC 185. II. Gradients in the Stellar Population
The star formation history of the dwarf elliptical galaxy NGC 185, together with its spatial variations, has been investigated for old, intermediate-age, and young stars, using new ground-based Hα and BVI photometry and synthetic color-magnitude diagrams (CMDs). We find that the bulk of the stars were formed in NGC 185 at an early epoch of its
Martínez-Delgado, D. et al.Advertised on:
111999 -
The Star Formation History of the Local Group Dwarf Galaxy Leo I
We present a quantitative analysis of the star formation history (SFH) of the Local Group dSph galaxy Leo I, from the information in its Hubble Space Telescope [(V-I),I] color-magnitude diagram (CMD). It reaches the level of the oldest main-sequence turnoffs, and this allows us to retrieve the SFH in considerable detail. The method we use is based
Gallart, Carme et al.Advertised on:
111999