Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...420l..87w&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 420, no. 2, p. L87-L90
Astronomy and Astrophysics
Astronomy
46
Circular Polarization, Infrared Sources (Astronomy), Nebulae, Photometry, Polarimetry, Protostars, Stellar Envelopes, Astronomical Observatories, Bandpass Filters, Cameras, Spectral Energy Distribution, Wavelengths
Scientific paper
We report the discovery of a deeply embedded young stellar object (YSO) 3 sec northwest of the Herbig Ae/Be star LkH-alpha 234. This source (PS 1) is not seen in optical or near-infrared images. However, its existence is revealed by our 2 micrometer(s) polarization map which demonstrates that PS 1 partially illuminates a reflection nebula at the core of NGC 7129. PS 1 most likely is much less evolved than LkH-alpha 234. PS 1 is very similar to a second deeply embedded object discovered recently in L1287 with the technique of infrared polarimetric imaging. These two YSOs may be representative of others that ultimately will be found hidden by dust near more evolved pre-main-sequence stars. Photometric observations centered on these pre-main-sequence stars have been presumed to represent flux from single stars surrounded by disks or other circumstellar structures. Models based on photometry, especially at mid-infrared wavelengths with large beams, therefore may have led to incorrect interpretations. Also, in many of these cases, an optically visible source is assumed to be the exciting star of a known molecular outflow. Our new result suggests instead that such energetic phenomena may be generated by heretofore undetected, less evolved sources.
Kastner Joel H.
Mahesh Ashwin
Weintraub David A.
No associations
LandOfFree
Discovery of a deeply embedded companion to LkH-alpha 234 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 Discovery of a deeply embedded companion to LkH-alpha 234, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of a deeply embedded companion to LkH-alpha 234 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-866003