Astronomy and Astrophysics – Astronomy
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.6209g&link_type=abstract
American Astronomical Society Meeting 204, #62.09; Bulletin of the American Astronomical Society, Vol. 36, p.774
Astronomy and Astrophysics
Astronomy
Scientific paper
The infrared source IRAS 05436-0007, also known as the McNeil Nebula, located in the Lynds 1630 cloud in Orion, was reported to have brightened substantially between October 2003 and January 2004. It has been suggested that this brightening resulted from rapid accretion of circumstellar material in a rare FU Orionis type eruption. An alternative explanation may be that McNeil's Nebula has cleared much of the surrounding material to reveal a young protostar. We obtained infrared observations of this source from 2-5 μ m with NIRSPEC at the W. M. Keck Observatory and SpeX at the Infrared Telescope Facility. These data indicate a substantial column density (τ ˜0.6) of water and CO ice. The 3.0 μ m profile is consistent with cold ( ˜10 K) amorphous water ice. The 4.67 μ m CO ice feature is dominated by a cold (<20 K) apolar component with a small contribution from a cold polar (H2O:CO) ice mixture. Superposed on the CO ice are broad gas phase CO emission lines (Rettig et al. 2004), indicating the presence of hot gas close to the star, and narrow CO absorption lines consistent with cooler gas in the surrounding nebulosity.
Brittain Sean D.
Gibb Erika Lynne
Kulesa Craig
Rettig Terrence W.
Simon Theodore
No associations
LandOfFree
Cold Ice Towards the McNeil Nebula (IRAS 05436-0007) 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 Cold Ice Towards the McNeil Nebula (IRAS 05436-0007), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cold Ice Towards the McNeil Nebula (IRAS 05436-0007) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1174416