Cold dust in elliptical galaxies.

Details Cold dust in elliptical galaxies. Cold dust in elliptical galaxies.

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...297l..71w&link_type=abstract

Astronomy and Astrophysics, v.297, p.L71

Astronomy and Astrophysics

Astrophysics

30

Interstellar Medium: Dust, Galaxies: Elliptical, Galaxies: Ism, Radio Continuum: Galaxies

Scientific paper

We have observed the λ1250 µm flux in 8 elliptical galaxies using the MPIfR 7-channel bolometer system attachet to the IRAM 30-m telescope. Five of the galaxies are detected at more than 3σ, two are tentatively detected and for one we obtained an upper limit. For two of the detected galaxies, the CO(2-1) line makes a significant contribution to the measured λ1250 µm flux. A comparison of the λ1250 µm fluxes, corrected for the CO(2-1) line contribution, with IRAS 60 and 100µm data shows that there is a colt dust component (Td~<20K) in two of the ellipticals. The other galaxies have λ1250 µm fluxes consistent with a one-temperature component, with Td typically between 20-30K.

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