Sentences with phrase «photometric distance»
On the whole, recent VLBI parallax measurements have shown that photometric distance estimates, when available, tend to be considerably more accurate than kinematic estimates.
http://galaxymap.org/
The two main techniques were kinematic and photometric distance estimates.
Not exact matches
Factors affecting that difference apart from those already mentioned are: the different angular distance from a target within which EBs become diluted and cause a false positive; here Brown uses a radius of 20 whereas for CoRoT, diluted EBs found by the photometric follow - up infer a radius of about 17 (Deeg et al. 2009).
As with kinematic distance estimates, there are a number of problems with this photometric approach.
We present 130 ultracool dwarf discoveries with estimated distances $ \ approx9 - 130 $ pc, including 21 that were independently discovered by other authors and 3 that were previously identified as photometric candidates.
By combining these color data, it is possible to make a crude estimate of the distances to the faint background galaxies (called photometric redshift).
Based on the extreme, deduced photometric redshift of GRB 000131 indicating that the gamma rays had travelled an extreme long cosmological distance, astronomers predicted a «break» in the red region of the spectrum around 670 to 700 nm from the strong absorption of light from intervening intergalactic hydrogen clouds along the line of sight between GRB 000131 and the Solar System.