Search Publications
Identification of candidate millisecond pulsars from Fermi LAT observations II
Wang, Zhong-Xiang; Xing, Yi; Vadakkumthani, Jithesh +1 more
On the basis of the properties of known γ-ray millisecond pulsars (MSPs), we have selected 77 un-associated sources from the Fermi Large Area Telescope (LAT) third source catalog for the purpose of finding likely candidate MSPs. Previously, detailed LAT data analysis for 39 of them was reported, and here we report the analysis for the remaining 38…
Gas emission and dynamics in the infrared dark cloud G31.23+0.05
Zhang, Chuan-Peng; Wang, Jun-Jie; Xu, Jin-Long +1 more
We performed a multiwavelength study towards the infrared dark cloud (IRDC) G31.23+0.05 with new CO observations from Purple Mountain Observatory and archival data (the GLIMPSE, MIPSGAL, HERSCHEL, ATLASGAL, BGPS and NVSS surveys). From these observations, we identified three IRDCs with systemic velocities of 108.36+/- 0.06 (cloud A), 104.22+/- 0.1…
V2551 Cyg: a pulsating star with enigmatic peculiarities
Popov, Velimir A.; Petrov, Nikola I.; Kjurkchieva, Diana P. +2 more
Intensive photometric and spectral observations of the variable star V2551 Cyg are presented. The light curve shape reveals that the target is a pulsating star, contrary to its previous classification as an eclipsing binary. The period and amplitude of the light curve, the amplitudes of color changes and the radial velocity curve of V2551 Cyg are …
An improved solution to geometric distortion using an orthogonal method
Wang, Na; Peng, Huan-Wen; Peng, Qing-Yu
The geometric distortion of a CCD field of view has a direct influence on the positional measurements of CCD observations. In order to obtain high precision astrometric results, the geometric distortion should be derived and corrected precisely. As presented in our previous work, a convenient solution has been carried out and has also been applied…
Multi-transition study of the peculiar merger Arp 299
Zhu, Ming; Jiao, Qian
We present a multi-transition study to investigate the physical properties of dust and molecular gas in the archetypical merger Arp 299 by using data including James Clerk Maxwell Telescope (JCMT) 850 and 450 µm observations, Herschel 500, 350, 250, 160 and 70 µm continuum maps, as well as the CO(3-2), CO(4-3) low-J CO lines and CO(11-…