A deep echelle survey and new analysis of diffuse interstellar bands

S. Ó Tuairisg; J. Cami; B. H. Foing; P. Sonnentrucker; P. Ehrenfreund

doi:10.1051/aas:2000148

A deep echelle survey and new analysis of diffuse interstellar bands

S. Ó Tuairisg
, J. Cami
, B. H. Foing
, P. Sonnentrucker
, P. Ehrenfreund^*

^*Corresponding author for this work

Leiden University
European Space Research and Technology Centre (ESTEC)
University of Galway
University of Amsterdam

Research output: Contribution to journal › Review article › peer-review

107 Citations (Scopus)

Abstract

We report a deep survey of diffuse interstellar bands (DIBs) between 3906 A and 6812 A under consistent observing conditions toward three very reddened and five unreddened stars. BD+63° 1964's line-of-sight was shown to present exceptional DIB enhancement in number as well as in strength. The early spectral type of the star and the use of spectra of an unreddened comparison star of the same spectral type allowed to limit stellar line residuals. Using careful reduction and analysis methods we discovered 60 new DIBs which are confirmed in the reddened targets HD 183143 and BD+40° 4220. We detected 25 possible DIBs which still await further confirmation, but we did not detect or confirm 28 previously reported DIBs. The present survey with 226 confirmed DIBs, measured in three targets allows a detailed and homogeneous statistical analysis on the distribution of DIB widths and intensities.

Original language	English
Pages (from-to)	225-238
Number of pages	14
Journal	Astronomy and Astrophysics Supplement Series
Volume	142
Issue number	2
DOIs	https://doi.org/10.1051/aas:2000148
Publication status	Published - 1 Mar 2000
Externally published	Yes

Keywords

ISM: general
ISM: molecules

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10.1051/aas:2000148

Cite this

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title = "A deep echelle survey and new analysis of diffuse interstellar bands",

abstract = "We report a deep survey of diffuse interstellar bands (DIBs) between 3906 A and 6812 A under consistent observing conditions toward three very reddened and five unreddened stars. BD+63° 1964's line-of-sight was shown to present exceptional DIB enhancement in number as well as in strength. The early spectral type of the star and the use of spectra of an unreddened comparison star of the same spectral type allowed to limit stellar line residuals. Using careful reduction and analysis methods we discovered 60 new DIBs which are confirmed in the reddened targets HD 183143 and BD+40° 4220. We detected 25 possible DIBs which still await further confirmation, but we did not detect or confirm 28 previously reported DIBs. The present survey with 226 confirmed DIBs, measured in three targets allows a detailed and homogeneous statistical analysis on the distribution of DIB widths and intensities.",

keywords = "ISM: general, ISM: molecules",

author = "Tuairisg, \{S. {\'O}\} and J. Cami and Foing, \{B. H.\} and P. Sonnentrucker and P. Ehrenfreund",

year = "2000",

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TY - JOUR

T1 - A deep echelle survey and new analysis of diffuse interstellar bands

AU - Tuairisg, S. Ó

AU - Cami, J.

AU - Foing, B. H.

AU - Sonnentrucker, P.

AU - Ehrenfreund, P.

PY - 2000/3/1

Y1 - 2000/3/1

N2 - We report a deep survey of diffuse interstellar bands (DIBs) between 3906 A and 6812 A under consistent observing conditions toward three very reddened and five unreddened stars. BD+63° 1964's line-of-sight was shown to present exceptional DIB enhancement in number as well as in strength. The early spectral type of the star and the use of spectra of an unreddened comparison star of the same spectral type allowed to limit stellar line residuals. Using careful reduction and analysis methods we discovered 60 new DIBs which are confirmed in the reddened targets HD 183143 and BD+40° 4220. We detected 25 possible DIBs which still await further confirmation, but we did not detect or confirm 28 previously reported DIBs. The present survey with 226 confirmed DIBs, measured in three targets allows a detailed and homogeneous statistical analysis on the distribution of DIB widths and intensities.

AB - We report a deep survey of diffuse interstellar bands (DIBs) between 3906 A and 6812 A under consistent observing conditions toward three very reddened and five unreddened stars. BD+63° 1964's line-of-sight was shown to present exceptional DIB enhancement in number as well as in strength. The early spectral type of the star and the use of spectra of an unreddened comparison star of the same spectral type allowed to limit stellar line residuals. Using careful reduction and analysis methods we discovered 60 new DIBs which are confirmed in the reddened targets HD 183143 and BD+40° 4220. We detected 25 possible DIBs which still await further confirmation, but we did not detect or confirm 28 previously reported DIBs. The present survey with 226 confirmed DIBs, measured in three targets allows a detailed and homogeneous statistical analysis on the distribution of DIB widths and intensities.

KW - ISM: general

KW - ISM: molecules

UR - https://www.scopus.com/pages/publications/0001381019

U2 - 10.1051/aas:2000148

DO - 10.1051/aas:2000148

M3 - Review article

AN - SCOPUS:0001381019

SN - 0365-0138

VL - 142

SP - 225

EP - 238

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

IS - 2

ER -

A deep echelle survey and new analysis of diffuse interstellar bands

Abstract

Keywords

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