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EREBUS: the EuRopean Extinction BUmp Survey

Capitanio, L. and Bartylak, M. and Cui, M. and Engegaard, B. and Gassner, M. and Heinemann, S. G. and Kargl, G. and Latzko, S. T. and Madonia, P. G. and May, A. J. and Postel, A. and Rodriguez Munoz, J. and Schwarzkopf, G. J. and Shipman, R. F. and Skalidis, R. and Trivino Herrero, V. and Wikman, K. (2020) EREBUS: the EuRopean Extinction BUmp Survey. Experimental Astronomy, 50 (1). pp. 145-158. ISSN 0922-6435. doi:10.1007/s10686-020-09667-8.

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Dust in the Interstellar Medium (ISM) is intimately linked to the life cycle of stars. Despite being of such fundamental importance to galaxy evolution, the dynamic behaviour and composition of the ISM are not yet fully understood. Observations of reddened Milky Way OB stars have revealed a strong UV extinction feature around 2175 Å and a precipitous extinction rise to the far UV along the lines of sight. Whilst the carrier(s) for this are at present still being debated, multiple laboratory studies suggest carbonate grains to be the key constituent. EREBUS is a mission concept being developed to study the composition of the ISM in both the Milky Way and Local Group Galaxies, primarily by mapping the spatial distribution of the UV extinction features. As these features are sensitive to the dust composition along the line of sight, EREBUS will provide a wealth of information about the spatial distribution and dynamic behaviour of the carrier(s). The mission proposes to deploy a satellite observatory equipped with a coarse UV spectrograph to map the extinction curve variability in the Milky Way in 3 dimensions and in the Local Group in 2 dimensions. In this paper, we discuss the scientific goals for the project, discuss a proposed observation strategy using an iterative process to develop a hierarchical map, and finally outline the instrument requirements and preliminary spacecraft architecture.

Item Type:Article
Related URLs:
URLURL TypeDescription
Madonia, P. G.0000-0003-2495-0724
May, A. J.0000-0003-2260-5345
Postel, A.0000-0002-5978-0940
Schwarzkopf, G. J.0000-0003-4577-677X
Additional Information:© 2020 Springer. Received 13 May 2020; Accepted 02 July 2020; Published 21 July 2020. The work reported here began with a project set at the ESA/FFG Alpbach Summer School held in Austria in July 2017. The data used to define the mission requirements and observation strategy are updated to August 2017. The authors would like to thank Peter Falkner and Michaela Gitsch, as well as the rest of the programme committee. The authors also gratefully acknowledge the support of their respective national sponsoring agencies and universities.
Subject Keywords:Dust; UV bump; Interstellar Medium
Issue or Number:1
Record Number:CaltechAUTHORS:20200721-123455885
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Official Citation:Capitanio, L., Bartylak, M., Cui, M. et al. EREBUS: the EuRopean Extinction BUmp Survey. Exp Astron 50, 145–158 (2020).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104479
Deposited By: Tony Diaz
Deposited On:21 Jul 2020 19:57
Last Modified:16 Nov 2021 18:32

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