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

A new method of image subtraction is applied to images from a J, K, andnarrow-band imaging survey of 300 square degrees of the plane of the Galaxy,searching for new Wolf-Rayet stars. Our survey spans 150 degrees in Galacticlongitude and reaches 1 degree above and below the Galactic plane. The surveyhas a useful limiting magnitude of K =15 over most of the observed Galacticplane, and K =14 (due to severe crowding) within a few degrees of the Galacticcenter. The new image subtraction method described here (better than apertureor even point-spread-function photometry in very crowded fields) detectedseveral thousand emission-line candidates. In June and July 2011 and 2012, wespectroscopically followed up on 333 candidates with MDM-TIFKAM and IRTF-SPEX,discovering 89 emission-line sources. These include 49 Wolf-Rayet stars, 43 ofthem previously unidentified, including the most distant known Galactic WRstars, more than doubling the number on the far side of the Milky Way. We alsodemonstrate our survey's ability to detect very faint PNe and other NIRemission objects.

A Near-Infrared Survey of the Inner Galactic Plane for Wolf-Rayet Stars III. New Methods: Faintest WR Stars