Surface brightness fluctuations as primary and secondary distance indicators
نویسندگان
چکیده
منابع مشابه
Surface Brightness Fluctuations as Stellar Population Indicators
Surface Brightness Fluctuations (SBF) can provide useful information about the unresolved stellar content of early-type galaxies and spiral bulges. The absolute SBF magnitude M in a given passband depends on the properties of the stellar population and can be predicted by population synthesis models. SBF measurements in different bandpasses are sensitive to different evolutionary stages within ...
متن کاملK – band versus I – band Surface Brightness Fluctuations as distance indicators
We evaluate the method of optical and in-frared Surface Brightness Fluctuations (SBF) as a distance indicator and its application on 8–m class telescopes , such as the Very Large Telescope (VLT). The novelty of our approach resides in the development of Monte Carlo simulations of SBF observations incorporating realistic elliptical galaxy stellar population models, the effects induced by globula...
متن کاملAnomalous Surface Brightness Fluctuations in NGC 4489 ⋆
Anomalously high K-band surface brightness fluctuations (SBF) have been reported in NGC 4489 by Pahre & Mould (1994), Jensen et al. (1996) and Jensen et al. (1998). However, these conclusions were uncertain because of relatively low signal-to-noise data. New high signal-to-noise data for NGC 4489 have been obtained at the NOAO/KPNO 2.1m and the ESO/La Silla 3.5m NTT telescopes. Adopting the I-b...
متن کاملThe distance to Hydra and Centaurus from surface brightness fluctuations: Consequences for the Great Attractor model
We present I-band Surface Brightness Fluctuations (SBF) measurements for 16 early type galaxies (3 giants, 13 dwarfs) in the central region of the Hydra cluster, based on deep photometric data in 7 fields obtained with VLT FORS1. From the SBF-distances to the galaxies in our sample we estimate the distance of the Hydra cluster to be 41.2 ± 1.4 Mpc ((m−M) =33.07 ± 0.07 mag). Based on an improved...
متن کاملOn surface brightness fluctuations: probabilistic and statistical bases
Aims. This work aims to provide a theoretical formulation of Surface Brightness Fluctuations (SBF) in the framework of probabilistic synthesis models, in which there are no deterministic relations between the different stellar components of a population but only relations on average, and to distinguish between the different distributions involved in the SBF definition. Methods. By applying the ...
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ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2012
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-012-0997-6