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Central UV Spikes in two Galactic Spheroids

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arxiv astro-ph/9901381 v1 pith:GZMENYYT submitted 1999-01-27 astro-ph

Central UV Spikes in two Galactic Spheroids

Michele Cappellari , Francesco Bertola , David Burstein , Lucio M. Buson , Laura Greggio , Alvio Renzini This is my paper
classification astro-ph
keywords eventspectraspikesaccretionblackbulge-dominatedbulgescenter
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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.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Transient and Variable Ultra-luminous X-ray Sources in NGC 4552

    astro-ph.HE 2026-07 conditional novelty 4.0

    Archival Chandra and XMM-Newton observations reveal two transient X-ray sources in NGC 4552 exceeding 10^39 erg/s, classifying them as new transient ULXs.