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

We started a multi-scale analysis of G202.3+2.5, an intertwined filamentaryregion of Monoceros OB1. In Paper I, we examined the distributions of densecores and protostars and found enhanced star formation (SF) activity in thejunction region of the filaments. In this second paper, we aim to unveil theconnections between the core and filament evolutions, and between the filamentdynamics and the global evolution of the cloud. We characterise the gasdynamics and energy balance using Herschel and WISE observations and moleculartracers observed with the IRAM 30m and TRAO 14m telescopes. The velocity fieldof the cloud is examined and velocity-coherent structures are put inperspective with the cloud environment. Two main velocity components (VCs) arerevealed, well separated in the north and merged around the location of intenseN2H+ emission where Paper I found the peak of SF activity. The relativeposition of the two VCs along the sightline, and the velocity gradient in N2H+emission imply that the VCs have been undergoing collision for ~10^5 yrs. Thedense gas where N2H+ is detected is interpreted as the compressed regionbetween the two filaments, which corresponds to a high mass inflow rate of~1e-3 Msun/yr and possibly leads to an increase in its SF efficiency. Weidentify a protostar in the junction region that possibly powers two crossedintermittent outflows. We show that the HII region around the nearby clusterNCG 2264 is still expanding and its role in the collision is examined. However,we cannot rule out the idea that the collision arises mostly from the globalcollapse of the cloud. The (sub-)filament-scale observables examined in thispaper reveal a collision between G202.3+2.5 sub-structures and its probablerole in feeding the cores in the junction region. One must now characterise thecloud morphology, its fragmentation, and magnetic field, all at highresolution.

Multi-scale analysis of the Monoceros OB 1 star-forming region: II. Colliding filaments in the Monoceros OB1 molecular cloud