39 citations · 86 across the 3 of their papers we have counts for
15 papers
Dust-to-gas ratio, factor and CO-dark gas in the Galactic anticentre: an observational study
B. -Q. Chen, X. -W. Liu, H. -B. Yuan +2
We investigate the correlation between extinction and H~{\sc i} and CO emission at intermediate and high Galactic latitudes ($|b|>10\degr$) within the footprint of the Xuyi Schmidt…
RR Lyrae in XSTPS: The halo density profile in the North Galactic Cap
Lorenzo Faccioli, Martin C. Smith, H. -B. Yuan +4
We present a catalog of RR Lyrae stars (RRLs) observed by the Xuyi Schmidt Telescope Photometric Survey (XDSS). The area we consider is located in the North Galactic Cap, covering…
Spectroscopic Observations of Planetary Nebulae in the Northern Spur of M31
X. Fang, Y. Zhang, R. Garcia-Benito +2
We present spectroscopy of three planetary nebulae (PNe) in the Northern Spur of the Andromeda Galaxy (M31) obtained with the Double Spectrograph on the 5.1 m Hale Telescope at the…
The extremely long period X-ray source in a young supernova remnant: a Thorne-Zytkow Object descendant?
X. W. Liu, R. X. Xu, E. P. J. van den Heuvel +4
The origin of the 6.67 hr period X-ray source, 1E161348-5055, in the young supernova remnant RCW 103 is puzzling. We propose that it may be the descendant of a Thorne-Zytkow Object…
[Fe III] emission lines in the planetary nebula NGC 2392
Y. Zhang, X. Fang, W. Chau +4
NGC 2392 is a young double-shell planetary nebula (PN). Its intrinsic structure and shaping mechanism are still not fully understood. In this paper we present new spectroscopic obs…
New effective recombination coefficients for nebular N II lines
X. Fang, P. J. Storey, X. -W. Liu
Here we report new calculations of the effective recombination coefficients for the \ion{N}{ii} recombination spectrum. We have taken into account the density dep…