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 mapping study of IRAS 05553+1631 was performed with  12 CO   J = 3 –2  and  13 CO   J = 2 –1  lines observed by the KOSMA 3‐m telescope. A core with a size of 0.65 pc and with a local thermodynamic equilibrium mass of 120 M  ⊙   was defined by mapping with the  13 CO   J = 2 –1  line. We have identified a bipolar outflow with  12 CO   J = 3 –2 . For accuracy in the calculation of outflow parameters, overcoming the projection effect is important. We propose a new method to directly calculate the inclination angle θ. We establish two basic equations with the help of an outflow contour diagram and finally obtain the ‘angle function’ and the ‘angle equation’ to derive θ. We apply our method to the outflow of IRAS 05553+1631, finding that  θ blue   is 73° and  θ red   is 78°. Compared to the parameters initially estimated under the assumption of a 45° inclination angle, the newly derived parameters are changed by different factors. For instance, the time‐scales for the blue and the red lobes became smaller by 0.31 and 0.21, respectively. Larger influences apply to the mechanical luminosity, driving force and mass‐loss rate. Comparisons between parameters before and after the correction show that the effect of the inclination angle cannot be neglected.

Inclination angle of the outflow in IRAS 05553+1631: a method to correct the projection effect