Early-type stars DIB in optical and infrared

DOI

The diffuse interstellar bands (DIBs) are a set of hundreds of unidentified absorption features that appear almost ubiquitously throughout the interstellar medium. Most DIBs appear at optical wavelengths, but some are in the near-infrared. We aim to characterise near-infrared DIBs at high spectral resolving power towards multiple targets. We observed 76 early-type stars at a resolving power of 50000 (velocity resolution ~6km/s) and signal-to-noise ratios of several hundreds using the CRyogenic high-resolution InfraRed Echelle Spectrograph (CRIRES). These data allow us to investigate the DIBs around 1318.1, 1527.4, 1561.1, 1565.1, 1567.0, 1574.4, and 1624.2nm. We detected a total of six DIB features and 17 likely stellar features through comparisons with a model spectrum computed with cmfgen. Additionally, we measured equivalent widths of the DIBs at 1318.1 and 1527.4nm using observations with X-shooter towards ten very highly reddened (3.2

Identifier
DOI http://doi.org/10.26093/cds/vizier.36720181
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/672/A181
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/672/A181
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/672/A181
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/672/A181
Provenance
Creator Smoker J.V.; Mueller A.; Monreal Ibero A.; Elyajouri M.; Evans C.J.,Najarro F.; Farhang A.; Cox N.L.J.; Minniti J.; Smith K.T.; Pritchard J.,Lallement R.; Smette A.; Boffin H.M.J.; Cordiner M.; Cami J.
Publisher CDS
Publication Year 2023
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Interdisciplinary Astronomy; Interstellar medium; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy