Other
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.3601h&link_type=abstract
American Astronomical Society, 181st AAS Meeting, #36.01; Bulletin of the American Astronomical Society, Vol. 24, p.1175
Other
Scientific paper
The IRAS Faint Source Database (FSDB) contains 1010 sources which have their maximum flux in the 25 microns band and which also have good detections at each of the 12, 25, and 60 microns bands. Radiation peaking at this wavelength implies a temperature of about 100-200 K, and is presumably arising from a circumstellar dust shell. By initially restricting somewhat the colors of these objects in the IRAS color-color plane, we reduced this to a sample of 274 objects. Of this number, 93 have been identified as planetary nebulae, 30 as proto-planetary nebulae, and 12 as "other" sources. It is suspected that many of the remaining 150 unidentified sources are also proto-planetary nebulae. To investigate this suggestion, we have begun a systemmatic study of the nature of the "25 microns peakers." As a first step, we have sought to locate optical counterparts for the unidentified sources by comparing their IRAS positions with those of stars in the STScI Guide Star Catalog. From this positional comparison, we determined good optical candidates for 50 of the sources. We are now in the process of (1) confirming the association by a ground-based observation of the optical candidate at 10 microns, (2) obtaining follow-up near-infrared and optical photometry of the confirmed sources to combine with the IRAS data to delineate the flux distributions from 0.4 to 60 microns, and (3) obtaining optical spectroscopy to investigate the properties of the photospheres of the sources. The preliminary results of this study will be presented, along with examples of some interesting objects which have been identified. This work is supported in part by a grant from the NASA JOVE program to Valparaiso University.
Hrivnak Bruce J.
Kwok Sun
No associations
LandOfFree
An Observational Study of IRAS "25 Micron Peakers" 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 An Observational Study of IRAS "25 Micron Peakers", we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Observational Study of IRAS "25 Micron Peakers" will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1110699