Young Stellar Objects in Dark Nebulae

James Haber

Need

• Help increase knowledge of star formation

• View parts of the universe previously obscured by dark nebulae

Spooky Star Forming Regionhttp://apod.nasa.gov/apod/ap041101.html

Introduction

• Nebula are clouds of ionized hydrogen gas

• Large regions of star formation

Orion Nebulahttp://apod.nasa.gov/apod/ap060119.html

Introduction

• Dark nebula are similar to reflection nebula

• Can only be seen due to the fact that they block out light

Horsehead Nebulahttp://apod.nasa.gov/apod/ap030713.html

Taurus-Auriga Dark Cloudhttp://www.usm.uni-muenchen.de/ys/iras_images.html

Literature Review

• Red and Nebulous Objects in Dark Clouds

• Search for protostars and T Tauri stars previously missed by Herbig and Rao

Literature Review

• An optical survey to look for star formation in Lynds Dark Clouds

• Ratio of Class 0 to Class I protostars was found to be about 1:1, very different from previous 1:10 ratio

Methodology

Bibliography• ESA/Hubble Information Centre. "Hubble spots a celestial bauble." ScienceDaily, 15 Dec.

2010. Web. 1 May 2011. • NASA/Jet Propulsion Laboratory. "The Art of Making Stars." ScienceDaily, 4 Apr. 2011.

Web. 1 May 2011.• Chandra X-ray Center. "New evidence on origin of supernovas." ScienceDaily, 27 Apr.

2011. Web. 1 May 2011.• Hillenbrand, Lynne. "On the Stellar Population and Star-Forming History of the Orion

Nebula Cluster." The Astronomical Journal 113.5 (1997).• "Secrets of a Dark Cloud." ESO. 2 July 1999. Web. 05 May 2011.

<http://www.eso.org/public/news/eso9934/>.• Francesco, James, Michiel R. Hogerheijde, and William J. Welch. "ABUNDANCES OF

MOLECULAR SPECIES IN BARNARD 68." The Astronomical Journal 124 (2002): 2749-755.• Visser, Anja E., and John S. Richer. "COMPLETION OF A SCUBA SURVEY OF LYNDS DARK

CLOUDS AND IMPLICATIONS FOR LOW-MASS STAR FORMATION." The Astronomical Journal 124 (2002): 2756-78

• Seeds, Michael A. "Three Kinds of Nebulae." Foundations of Astronomy. Australia: Thomson Brooks/Cole, 2008. 198-99.

• "Lynds Clouds." CoolWiki. Web. 03 June 2011. <http://coolwiki.ipac.caltech.edu/index.php/Main_Page>.