English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We present ultra-high resolution (0.32 km/s) spectra obtained with the 3.9mAnglo-Australian Telescope (AAT) and Ultra-High-Resolution Facility (UHRF), ofinterstellar NaI D1, D2, Ca II K, K I and CH absorption toward two highgalactic latitude stars HD141569 and HD157841. We have compared our data with21-cm observations obtained from the Leiden/Dwingeloo HI survey. We derive thevelocity structure, column densities of the clouds represented by the variouscomponents and identify the clouds with ISM structures seen in the region atother wavelengths. We further derive abundances, linear depletions and H2fractional abundances for these clouds, wherever possible. Toward HD141569, wedetect two components in our UHRF spectra : a weak, broad component at - 15km/s, seen only in CaII K absorption and another component at 0 km/s, seen inNaI D1, D2, Ca II K, KI and CH absorption. In the case of the HD157841sightline, a total of 6 components are seen on our UHRF spectra in NaI D1, D2Ca II K, K I and CH absorption. 2 of these 6 components are seen only in asingle species.Comment: 16 pages, Latex, 4 figures, ps files Astrophysical Journal (in press

Atomic and Molecular Interstellar Absorption Lines toward the High Galactic Latitude Stars HD 141569 and HD 157841 at Ultra–High Resolution