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26 April 2024 |
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Article overview
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Central UV Spikes in two Galactic Spheroids | | Michele Cappellari
; Francesco Bertola
; David Burstein
; Lucio M. Buson
; Laura Greggio
; Alvio Renzini
; | | Date: |
27 Dec 1998 | | Subject: | astro-ph | | Abstract: | FOS spectra and FOC photometry of two centrally located, UV-bright spikes in the elliptical galaxy NGC 4552 and the bulge-dominated early spiral NGC 2681, are presented. These spectra reveal that such point-like UV sources detected by means of HST within a relatively large fraction ~15% of bulges can be related to radically different phenomena. While the UV unresolved emission in NGC 4552 represents a transient event likely induced by an accretion event onto a supermassive black hole, the spike seen at the center of NGC 2681 is not variable and it is stellar in nature. | | Source: | arXiv, astro-ph/9901381 | | Services: | Forum | Review | PDF | Favorites | |
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