Abstract
On the basis of the new Galactic rotation curve and constants R 0 and V 0, and using HII regions, giant molecular clouds and other tracer objects, we have revised the pattern of the Sagittarius-Carina arm of our Galaxy. We have derived its pitch angle to be about 12°, and explored the dependence of the pitch angle on the Galactic constants. The result indicates that with decreasing Galactic constants, the pitch angle increases, and so does the number of spiral arms, according to the symmetric logarithmic arms model. In addition, the halo mass of our Galaxy will decrease with the flattening and downward turn of the rotation curve.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
