Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248..542f&link_type=abstract
Astrophysical Journal, Vol.248, P. 542, 1981
Astronomy and Astrophysics
Astrophysics
15
Scientific paper
The radial velocity (with respect to the local standard of rest) of IRC +10420 at visible wavelengths has been found to be 97 ± 3 km s-1 for lines of calcium, silicon, and iron and 50 ± 3 km s-1 for the sodium D lines. The D line absorption is attributed to in stellar sodium atoms with an average distance of about 4 kpc, thus placing a lower limit on the distance to IRC +10420. The radial velocity of the remaining lines is about 30 km s-1 larger than the stellar velocity inferred from spectra of the 18 cm OH maser lines. The discrepancy between the OH velocity and the visible velocity of IRC +10420 is accounted for on the basis of a thick, expanding particle shell which produces redshifts in the wavelengths of the emergent stellar photons. The particle shell also causes relatively neutral extinction of stellar radiation and can reconcile an apparent discrepancy between the unreddened visible brightness of IRC +10420 and its infrared brightness.
No associations
LandOfFree
The Radial Velocity of IRC+10420 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 The Radial Velocity of IRC+10420, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Radial Velocity of IRC+10420 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1512918