Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...596.1064j&link_type=abstract
The Astrophysical Journal, Volume 596, Issue 2, pp. 1064-1079.
Astronomy and Astrophysics
Astronomy
9
Ism: H Ii Regions, Infrared: Ism, Ism: Individual: Alphanumeric: S269, Ism: Lines And Bands, Stars: Formation
Scientific paper
The star-forming region S269 is studied with deep JHKs and H2 v=1-0 S(1) images and K-band spectroscopy. The JHKs images reveal a rich embedded cluster at the center of the field; most stars in the cluster are located in two major congregations. The colors of the two congregations and of the associated nebulosities are quite different. The color-color diagrams and color-magnitude diagrams of the two subgroups show that their intrinsic colors are not significantly different, suggesting that they could be formed at a similar age. Between the subgroups there are two near-infrared sources, IRS 2e and 2w. Their K-band spectra rise toward longer wavelengths, indicative of a dense dusty envelope surrounding them. Strong H2 and Brγ lines are detected on these two objects. A poorly collimated bipolar H2 jet has been detected around IRS 2e and 2w. The morphology of the infrared jet and K-band spectra of the two infrared sources suggest that the jet is likely driven by IRS 2e or 2w, or both. Several lines of evidence suggest that IRS 2e and 2w are massive young stellar objects probably younger than most of the stars in the region. Given the facts above, we speculate that lower mass star-forming activities in a stellar cluster could play an important role in the formation of a massive star.
Baba Daisuke
Ishii Miki
Jiang Zhibo
Kato Daisuke
Kurita Mikio
No associations
LandOfFree
A Near-Infrared Study of the Star-forming Region S269 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 A Near-Infrared Study of the Star-forming Region S269, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Near-Infrared Study of the Star-forming Region S269 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-913485