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Developing Automated Spectral Analysis Tools for Interstellar Features Extractionto Support Construction of the 3D ISM Map

Published online by Cambridge University Press:  07 March 2018

L. Puspitarini Open the ORCID record for L. Puspitarini [Opens in a new window] ,
R. Lallement ,
A. Monreal-Ibero ,
H.-C. Chen ,
H. L. Malasan ,
Aprilia ,
M. I. Arifyanto  and
M. Irfan
L. Puspitarini*
Affiliation:
Department of Astronomy and Bosscha Observatory, FMIPA Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132 Indonesia
R. Lallement
Affiliation:
GEPI, Observatoire de Paris, CNRS UMR8111, Université Paris Diderot, Place Jules Janssen, 92190 Meudon, France
A. Monreal-Ibero
Affiliation:
GEPI, Observatoire de Paris, CNRS UMR8111, Université Paris Diderot, Place Jules Janssen, 92190 Meudon, France
H.-C. Chen
Affiliation:
Institute of Astronomy, National Central University, Chungli, Taiwan
H. L. Malasan
Affiliation:
Department of Astronomy and Bosscha Observatory, FMIPA Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132 Indonesia
Aprilia
Affiliation:
Department of Astronomy and Bosscha Observatory, FMIPA Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132 Indonesia
M. I. Arifyanto
Affiliation:
Department of Astronomy and Bosscha Observatory, FMIPA Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132 Indonesia
M. Irfan
Affiliation:
Department of Astronomy and Bosscha Observatory, FMIPA Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132 Indonesia
*
a email: lucky.puspitarini@as.itb.ac.id
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Abstract

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One of the ways to obtain a detailed 3D ISM map is by gathering interstellar (IS) absorption data toward widely distributed background target stars at known distances (line-of-sight/LOS data). The radial and angular evolution of the LOS measurements allow the inference of the ISM spatial distribution. For a better spatial resolution, one needs a large number of the LOS data. It requires building fast tools to measure IS absorption. One of the tools is a global analysis that fit two different diffuse interstellar bands (DIBs) simultaneously. We derived the equivalent width (EW) ratio of the two DIBs recorded in each spectrum of target stars. The ratio variability can be used to study IS environmental conditions or to detect DIB family.

Keywords

ISM: structureabundancesextinctionbands
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 243 - 244
Copyright
Copyright © International Astronomical Union 2018 

References

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