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Michelle L. Edwards, Reba M. Bandyopadhyay, Stephen S. Eikenberry, Valerie J. Mikles & Dae-Sik Moon

A Near-Infrared Narrow-band Imaging Survey to Search for Massive Stars in Cl 1806-20

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Open Access

Abstract

We survey the environment surrounding Cl 1806-20 using near-infrared narrow-band imaging to search for Brgamma features indicative of massive stars. Using this technique, we successfully detect previously identified massive stars in the cluster. While we detect no new emission line stars, establishing a firm upper limit on the number of Wolf Rayets and Luminous Blue Variables, we do find several candidate OB supergiants, which likely represent the bulk of the heretofore undiscovered massive star population. Finally, we present spectroscopic evidence for emission-line variability in LBV 1806-20. Our results highlight the advantages of using narrow-band imaging to search for massive stars.

To cite this article

Michelle L. Edwards, Reba M. Bandyopadhyay, Stephen S. Eikenberry, Valerie J. Mikles & Dae-Sik Moon, «A Near-Infrared Narrow-band Imaging Survey to Search for Massive Stars in Cl 1806-20», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 80 - Année 2011, 366 - 370 URL : https://popups.uliege.be/0037-9565/index.php?id=2832.

About: Michelle L. Edwards

Gemini Observatory, Southern Operations Center, La Serena, Chile, et

About: Reba M. Bandyopadhyay

Department of Astronomy, University of Florida, Gainesville, FL 32611

About: Stephen S. Eikenberry

Department of Astronomy, University of Florida, Gainesville, FL 32611

About: Valerie J. Mikles

Department of Astronomy, University of Florida, Gainesville, FL 32611

About: Dae-Sik Moon

Department of Astronomy, University of Florida, Gainesville, FL 32611, and Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803