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The Mid-Infrared Emission of Seyfert Galaxies: A New Analysis of ISOCAM Data

Pérez García, A. M.; Acosta-Pulido, J. A.; Ramos Almeida, C. +1 more

We present mid-infrared data of a sample of 57 AGNs obtained with the instrument ISOCAM on board the Infrared Space Observatory (ISO) satellite. The images were obtained through the LW2 (6.75 µm) and LW7 (9.62 µm) filters. This is a new analysis of the Clavel et al. galaxy sample, which is divided into 26 type 1 (<=1.5) and 28 type …

Mid-Infrared Photometry of Mass-losing Asymptotic Giant Branch Stars

Corcione, L.; Guandalini, R.; Busso, M. +2 more

We present ground-based mid-IR imaging for 27 M-, S-, and C-type asymptotic giant branch (AGB) stars. The data are compared with those of the database available thanks to the IRAS, Infrared Space Observatory, Midcourse Space Experiment, and Two Micron All Sky Survey catalogs. Our goal is to establish relations between the IR colors, the effective …

Infrared Study of J-Type Carbon Stars Based on Infrared Astronomical Satellite, Two Micron All Sky Survey, and Infrared Space Observatory Data

Chen, Pei-Sheng; Yang, Xiao-Hong; Zhang, Pin

We collected 113 J-type carbon stars from the published literature. Observations from 2MASS, IRAS, and ISO show that, except for silicate carbon stars in the J-type carbon star domain, the infrared properties of the other J-type carbon stars are quite similar to those of ordinary carbon stars. The above results imply that the chemical peculiarity …

Silicates in D-Type Symbiotic Stars: An Infrared Space Observatory Overview

Ciroi, S.; Rafanelli, P.; Angeloni, R. +1 more

We investigate the IR spectral features of a sample of D-type symbiotic stars in order to constrain the emitting properties of coupled dust-gas particles across the whole system. In particular, by analyzing unexploited ISO Short Wavelength Spectrometer data, deriving the basic observational parameters of dust bands, and comparing them with respect…