86 citations · 633 across the 44 of their papers we have counts for
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Mid- to Far-Infrared spectroscopy of Sharpless 171
Y. Okada, T. Onaka, H. Shibai +1
We have collected one-dimensional raster-scan observations of the active star-forming region Sharpless 171 (S171), a typical HII region-molecular cloud complex, with the three spec…
Magnitude systems in old star catalogues
Tomoko Fujiwara, Hitoshi Yamaoka
The current system of stellar magnitudes first introduced by Hipparchus was strictly defined by Norman Robert Pogson in 1856. He based his system on Ptolemy's star catalogue `Almag…
Survey of long-term variability of stars I. Reliability of magnitudes in old star catalogues
Tomoko Fujiwara, Hitoshi Yamaoka, Shigeru J. Miyoshi
The comparison of visual magnitudes of stars compiled in old catalogues is expected to yield information about their long-term magnitude variations. In seven old catalogues whose h…
Properties of the background of EPIC onboard XMM-Newton
H. Katayama, I. Takahashi, Y. Ikebe +3
Understanding a background is crucial in particular for a study of low surface brightness objects. In order to establish the background subtraction method, we have studied properti…