LINER-like emission in red galaxies: evolutionary phase or recurring phenomenon?
نویسندگان
چکیده
منابع مشابه
Emission and Absorption in the M87 LINER
The nucleus of M87 displays a LINER spectrum at optical wavelengths, with a nuclear disk of nebulosity that is resolved by the Hubble Space Telescope. We present new results from optical and ultraviolet spectra of the central ∼ 40 pc as measured by HST. In contrast with previous results for the extended disk, the emission-line spectrum of the central region is best reproduced by a multi-compone...
متن کاملRecurring 'red eyes' due to seasonal hypercalcaemia.
Recurrent hypercalcaemia associated with hypersensitivity to ultra violet light occurring in a patient who had had clinical sarcoidosis 14 years previously. Hypercalcaemia in sarcoidosis is a well known association, but it is less often realized that this hypercalcaemia may undergo seasonal variation (Taylor, Lynch and Wyser, 1963). The following case report describes recurring seasonal symptom...
متن کاملThe Red Halo Phenomenon
Optical and near-IR observations of the halos of disk galaxies and blue compact galaxies have revealed a very red spectral energy distribution which cannot easily be reconciled with a normal, metal-poor stellar population like that in the stellar halo of the Milky Way. Here, spectral evolutionary models are used to explore the consequences of these observations. We demonstrate that a stellar po...
متن کاملLight-year Scale Radio Cores in Four LINER Galaxies
The LINER galaxies NGC2911, NGC 3079, NGC3998, and NGC6500 were observed at 5 GHz with the European VLBI Network at a resolution of 5 milliarcsecond and found to possess flat-spectrum, variable, highbrightness temperature (TB > 10 8 K) radio cores. These radio characteristics reinforce the view that these LINERs host central engines associated with active galactic nuclei.
متن کاملRelativistic Jets in Radio-Weak Quasars and LINER Galaxies
We discuss radio observations of a sample of radio-weak and radio-intermediate quasars which demonstrate that – just like their radio-loud counterparts – radioweak quasars too have relativistic jets in their nuclei. Moreover, a VLA survey of nearby LINER galaxies reveals a relatively large number of flat-spectrum radio cores. It is suggested that those cores are also best explained by moderatel...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2007
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921308017596