Title

Origin of a Cosmic Ring in NGC 7538

Presenter Information

Jason Arakawa

Document Type

Oral Presentation

Location

SURC Ballroom B/C/D

Start Date

21-5-2015

End Date

21-5-2015

Keywords

Physics, Star-forming Region, Astronomy

Abstract

NGC 7538 is a high mass star forming region about 8,800 light years away. In this region, stars are being born, beginning from a large collapsing dust cloud. After the formation of the star, the burning of hydrogen in the core through nuclear fusion produces photons that outflow and exert pressure, called radiation pressure, on the gas and dust surrounding the star, forming a bubble of empty space. The research investigated an elliptical gas ring in NGC 7538, similar to these bubbles, whose source is unknown as it doesn’t have a star in the center. This research investigated whether a runaway star could have formed in or passed through the center of the ring region previously, initialized the expansion of the ring, then moved out of the region. A program was written to plot stars around the ring in three dimensions, and from the stars plotted so far, there have not been any stars that intersected the ring in the past. We will continue to consider more stars from more databases to determine if a runaway star did intersect the ring in the past.

Poster Number

58

Faculty Mentor(s)

Darci Snowden, Cassandra Fallscheer

Department/Program

Physics

Additional Mentoring Department

Physics

Additional Mentoring Department

Physics

This document is currently not available here.

Share

COinS
 
May 21st, 8:30 AM May 21st, 11:00 AM

Origin of a Cosmic Ring in NGC 7538

SURC Ballroom B/C/D

NGC 7538 is a high mass star forming region about 8,800 light years away. In this region, stars are being born, beginning from a large collapsing dust cloud. After the formation of the star, the burning of hydrogen in the core through nuclear fusion produces photons that outflow and exert pressure, called radiation pressure, on the gas and dust surrounding the star, forming a bubble of empty space. The research investigated an elliptical gas ring in NGC 7538, similar to these bubbles, whose source is unknown as it doesn’t have a star in the center. This research investigated whether a runaway star could have formed in or passed through the center of the ring region previously, initialized the expansion of the ring, then moved out of the region. A program was written to plot stars around the ring in three dimensions, and from the stars plotted so far, there have not been any stars that intersected the ring in the past. We will continue to consider more stars from more databases to determine if a runaway star did intersect the ring in the past.