705. Synthesis of heterocyclic compounds from δ-unsaturated 1 : 3-diketo-esters
作者:Gabra Soliman、Latif Rateb
DOI:10.1039/jr9560003663
日期:——
Amer, Adel; Rashed, Nagwa; Rahman, Mohamed M. Abdel, Heterocycles, 1987, vol. 26, # 5, p. 1277 - 1282
作者:Amer, Adel、Rashed, Nagwa、Rahman, Mohamed M. Abdel、Zimmer, Hans
DOI:——
日期:——
A quasar possibly ejected from NGC4579
作者:Xingfen Zhu、Yaoquan Chu、Jianyan Wei、Haotong Zhang、Jingyao Hu
DOI:10.1007/bf02886193
日期:2000.5
With the 2.16 m telescope at Beijing Astronomical Observatory, it is identified that a compact X-ray source detected by ROSAT located in the vicinity of 5'.9 from the LINER galaxy NGC4579 is a quasar with a redshift z = 0.106. A further analysis indicates that this quasar is possibly ejected from NGC4579.
CLARK, B. P.;ROSS, W. J.;TODD, A.
作者:CLARK, B. P.、ROSS, W. J.、TODD, A.
DOI:——
日期:——
AMER, ADEL;ZIMMER, HANS, HETEROCYCLES, 26,(1987) N 7, 1853-1862