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/

Global: Zendy Plus annual

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

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Herschel Space Observatory was used to observe ~ 120 pre-main-sequencestars in Taurus as part of the GASPS Open Time Key project. PACS was used tomeasure the continuum as well as several gas tracers such as [OI] 63 \mu m,[OI] 145 \mu m, [CII] 158 \mu m, OH, H2O and CO. The strongest line seen is[OI] at 63 \mu m. We find a clear correlation between the strength of the [OI]63 \mu m line and the 63 \mu m continuum for disk sources. In outflow sources,the line emission can be up to 20 times stronger than in disk sources,suggesting that the line emission is dominated by the outflow. The tightcorrelation seen for disk sources suggests that the emission arises from theinner disk ($<$ 50 AU) and lower surface layers of the disk where the gas anddust are coupled. The [OI] 63 \mu m is fainter in transitional stars than innormal Class II disks. Simple SED models indicate that the dust responsible forthe continuum emission is colder in these disks, leading to weaker lineemission. [CII] 158 \mu m emission is only detected in strong outflow sources.The observed line ratios of [OI] 63 \mu m to [OI] 145 \mu m are in the regimewhere we are insensitive to the gas-to-dust ratio, neither can we discriminatebetween shock or PDR emission. We detect no Class III object in [OI] 63 \mu mand only three in continuum, at least one of which is a candidate debris disk.

Herschel/PACS Survey of protoplanetary disks in Taurus/Auriga -- Observations of [OI] and [CII], and far infrared continuum