Central UV spikes in two galactic spheroids
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 ca...
| Главные авторы: | , , , , , |
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| Другие авторы: | |
| Формат: | Book section |
| Опубликовано: |
Cambridge University Press
2000
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| _version_ | 1826296394532519936 |
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| author | Cappellari, M Bertola, F Burstein, D Buson, L Greggio, L Renzini, A |
| author2 | Carollo, C |
| author_facet | Carollo, C Cappellari, M Bertola, F Burstein, D Buson, L Greggio, L Renzini, A |
| author_sort | Cappellari, M |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T04:15:39Z |
| format | Book section |
| id | oxford-uuid:c952df51-751c-41b4-aa88-fe554298f29e |
| institution | University of Oxford |
| last_indexed | 2024-03-07T04:15:39Z |
| publishDate | 2000 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | oxford-uuid:c952df51-751c-41b4-aa88-fe554298f29e2022-03-27T06:58:20ZCentral UV spikes in two galactic spheroidsBook sectionhttp://purl.org/coar/resource_type/c_3248uuid:c952df51-751c-41b4-aa88-fe554298f29eSymplectic Elements at OxfordCambridge University Press2000Cappellari, MBertola, FBurstein, DBuson, LGreggio, LRenzini, ACarollo, CFerguson, HWyse, RFOS 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. |
| spellingShingle | Cappellari, M Bertola, F Burstein, D Buson, L Greggio, L Renzini, A Central UV spikes in two galactic spheroids |
| title | Central UV spikes in two galactic spheroids |
| title_full | Central UV spikes in two galactic spheroids |
| title_fullStr | Central UV spikes in two galactic spheroids |
| title_full_unstemmed | Central UV spikes in two galactic spheroids |
| title_short | Central UV spikes in two galactic spheroids |
| title_sort | central uv spikes in two galactic spheroids |
| work_keys_str_mv | AT cappellarim centraluvspikesintwogalacticspheroids AT bertolaf centraluvspikesintwogalacticspheroids AT bursteind centraluvspikesintwogalacticspheroids AT busonl centraluvspikesintwogalacticspheroids AT greggiol centraluvspikesintwogalacticspheroids AT renzinia centraluvspikesintwogalacticspheroids |