| Issue |
A&A
Volume 408, Number 1, September II 2003
|
|
|---|---|---|
| Page(s) | L9 - L12 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20031139 | |
| Published online | 17 November 2003 | |
Letter to the Editor
Far infra-red emission from NGC 7078: First detection of intra-cluster dust in a globular cluster*
1
Astrophysics Group, School of Chemistry & Physics, Keele University, Staffordshire ST5 5BG, UK
2
Max–Planck–Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
3
Space Science & Technology Department, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK
4
Centre for Astrophysics, University of Central Lancashire, Preston, Lancashire PR1 2HE, UK
Corresponding author: A. Evans, ae@astro.keele.ac.uk
Revised:
3
July
2003
Accepted:
28
July
2003
Improved data analysis of far infrared imaging data of the globular cluster NGC 7078 obtained with the ISO instrument ISOPHOT at 60 μm, 70 μm and 90 μm has detected the thermal emission from dust in its core, the first secure detection of intra-cluster dust in a globular cluster. The amount of dust is broadly consistent with mass-loss from evolved, metal-deficient stars in NGC 7078 in the time since it last crossed the Galactic plane.
Key words: globular clusters: general / infrared: general / globular clusters: individual: NGC 7078 / ISM: general
© ESO, 2003
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