%0 Generic %1 wendt2017mapping %A Wendt, Martin %A Husser, Tim-Oliver %A Kamann, Sebastian %A Monreal-Ibero, Ana %A Richter, Philipp %A Brinchmann, Jarle %A Dreizler, Stefan %A Weilbacher, Peter M. %A Wisotzki, Lutz %D 2017 %K 3D absorption interstellar muse %T Mapping diffuse interstellar bands in the local ISM on small scales via MUSE 3D spectroscopy %U http://arxiv.org/abs/1709.03982 %X We map the interstellar medium (ISM) including the diffuse interstellar bands (DIBs) in absorption toward the globular cluster NGC 6397 using VLT/MUSE. This pilot study demonstrates the power of MUSE for mapping the local ISM on very small scales which provides a new window for ISM observations. Assuming the absorbers are located at the rim of the Local Bubble we trace small-scale variations in NaI and KI as well as in several DIBs structures on the order of mpc (milliparsec, a few thousand AU). The sightlines defined by binned stellar spectra are separated by only a few arcseconds and we probe the absorption within a physically connected region. This analysis utilized the fitting residuals of individual stellar spectra of NGC 6397 member stars and analyzed lines from neutral species and several DIBs in Voronoi-binned composite spectra with high signal-to-noise ratio (S/N). We verify the suitability of the MUSE 3D spectrograph for such measurements and gain new insights by probing a single physical absorber with multiple sight lines.

@misc{wendt2017mapping, abstract = {We map the interstellar medium (ISM) including the diffuse interstellar bands (DIBs) in absorption toward the globular cluster NGC 6397 using VLT/MUSE. This pilot study demonstrates the power of MUSE for mapping the local ISM on very small scales which provides a new window for ISM observations. Assuming the absorbers are located at the rim of the Local Bubble we trace small-scale variations in NaI and KI as well as in several DIBs structures on the order of mpc (milliparsec, a few thousand AU). The sightlines defined by binned stellar spectra are separated by only a few arcseconds and we probe the absorption within a physically connected region. This analysis utilized the fitting residuals of individual stellar spectra of NGC 6397 member stars and analyzed lines from neutral species and several DIBs in Voronoi-binned composite spectra with high signal-to-noise ratio (S/N). We verify the suitability of the MUSE 3D spectrograph for such measurements and gain new insights by probing a single physical absorber with multiple sight lines.}, added-at = {2017-09-14T09:26:53.000+0200}, author = {Wendt, Martin and Husser, Tim-Oliver and Kamann, Sebastian and Monreal-Ibero, Ana and Richter, Philipp and Brinchmann, Jarle and Dreizler, Stefan and Weilbacher, Peter M. and Wisotzki, Lutz}, biburl = {https://www.bibsonomy.org/bibtex/2ae05ed2feaee4a5a2bb9372d845feb8c/miki}, description = {[1709.03982] Mapping diffuse interstellar bands in the local ISM on small scales via MUSE 3D spectroscopy}, interhash = {d0aff3fe6401bda7dddf465bb2444296}, intrahash = {ae05ed2feaee4a5a2bb9372d845feb8c}, keywords = {3D absorption interstellar muse}, note = {cite arxiv:1709.03982Comment: 16 pages, 17 figures, accepted for publication in Astronomy and Astrophysics;}, timestamp = {2017-09-14T09:26:53.000+0200}, title = {Mapping diffuse interstellar bands in the local ISM on small scales via MUSE 3D spectroscopy}, url = {http://arxiv.org/abs/1709.03982}, year = 2017 }