TY - GEN
T1 - Dust and PAHs in X-ray plasma of elliptical galaxies
AU - Kaneda, Hidehiro
AU - Onaka, Takashi
AU - Suzuki, Toyoaki
AU - Mori, Tatsuya
AU - Yamagishi, Mitsuyoshi
AU - Kondo, Toru
AU - Yasuda, Akiko
PY - 2011/9
Y1 - 2011/9
N2 - Many elliptical galaxies possess an appreciable amount of X-ray-emitting hot plasma, providing a harsh interstellar environment for the survival of dust grains and polycyclic aromatic hydrocarbons (PAHs). Despite such a hostile environment, it has been found that a significant fraction of X-ray elliptical galaxies contain a considerable amount of dust, which cannot be explained solely from replenishment by old stars. Some of them even show the presence of PAHs. We present the results of AKARI and Spitzer observations of dust and PAHs in X-ray elliptical galaxies. We investigate their possible origins and discuss the implications of their presence for the evolution of elliptical galaxies.
AB - Many elliptical galaxies possess an appreciable amount of X-ray-emitting hot plasma, providing a harsh interstellar environment for the survival of dust grains and polycyclic aromatic hydrocarbons (PAHs). Despite such a hostile environment, it has been found that a significant fraction of X-ray elliptical galaxies contain a considerable amount of dust, which cannot be explained solely from replenishment by old stars. Some of them even show the presence of PAHs. We present the results of AKARI and Spitzer observations of dust and PAHs in X-ray elliptical galaxies. We investigate their possible origins and discuss the implications of their presence for the evolution of elliptical galaxies.
KW - ISM: dust
KW - cD-galaxies: ISM
KW - extinction-infrared: galaxies-galaxies: elliptical and lenticular
UR - http://www.scopus.com/inward/record.url?scp=84865698217&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865698217&partnerID=8YFLogxK
U2 - 10.1017/S1743921312009192
DO - 10.1017/S1743921312009192
M3 - Conference contribution
AN - SCOPUS:84865698217
SN - 9781107019843
T3 - Proceedings of the International Astronomical Union
SP - 254
EP - 258
BT - The Spectral Energy Distribution of Galaxies
A2 - Tuffs, Richard J.
A2 - Popescu, Cristina C.
ER -