Modeling Mass-Loss and Infrared Excess in Large Magellanic Cloud Cepheids

Details Modeling Mass-Loss and Infrared Excess in Large Magellanic Cloud Cepheids Modeling Mass-Loss and Infrared Excess in Large Magellanic Cloud Cepheids

2008-08-28

arxiv.org/abs/0808.3995v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, 1 table. To appear in the proceedings of IAU Symposium 256, The Magellanic System: Stars, Gas, and Galaxie

Scientific paper

The purpose of this preliminary work is to determine if Large Magellanic Cloud (LMC) Cepheids have stellar winds. If a Cepheid undergoes mass loss then at some distance from the star, a fraction of the gas becomes dust, which causes an infrared excess. Mass loss is tested using OGLE II optical observations and SAGE infrared observations for a sample of 488 Cepheids. The resultant mass-loss rates range from $10^{-12}$ to $10^{-7}$ $M_\odot/yr$. Using the mass--loss model we compute infrared stellar luminosities for the sample of Cepheids and compare predicted infrared PL relations with observed relations. The predicted relations not only vary from the observed relations, implying mass loss plays a significant role, but also show evidence for non-linearity. It is determined that mass loss is important for LMC Cepheids.

Affiliated with

Also associated with

No associations

Rating

Modeling Mass-Loss and Infrared Excess in Large Magellanic Cloud Cepheids does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modeling Mass-Loss and Infrared Excess in Large Magellanic Cloud Cepheids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling Mass-Loss and Infrared Excess in Large Magellanic Cloud Cepheids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-541797