Reference : Further investigation of the pair of quasars Q0107 - 025 A and B
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/17773
Further investigation of the pair of quasars Q0107 - 025 A and B
English
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Arp, H. [Mount Wilson and Las Campanas Observatories, Pasadena, CA]
Gosset, Eric mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
Kruszewski, A. [Obserwatorium Astronomiczne, Warsaw, Poland]
Robertson, J. G. [Anglo-Australian Observatory, Epping, Australia]
Shaver, P. A. [> > > >]
Swings, Jean-Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
1986
Astronomy and Astrophysics
EDP Sciences
161
209-216
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] QUASARS ; SPECTRUM ANALYSIS ; ASTRONOMICAL PHOTOMETRY ; FORBIDDEN TRANSITIONS ; GALACTIC CLUSTERS ; GRAVITATIONAL LENSES ; RED SHIFT ; SPECTRAL RESOLUTION ; ASTRONOMICAL SPECTROSCOPY
[en] Low and intermediate dispersion spectroscopy of Q0107 - 025 A and B obtained at ESO, AAT, and MMT provide evidence for spectral differences between these two quasars. A redshift difference of 0.004 is found between the two objects, and forbidden emission lines due to O II (3727 A), Ne III (1815), and possibly Ne V (3426 A), are seen in the spectrum of Q0107 - 025 A, while only the forbidden Ne III line at 1815 A is possibly detected in the spectdrum of Q0107 - 025 B. No narrow absorption lines could be detected in the 3252 - 5616 A spectral range of the intermediate resolution data of either quasar, and the spectrum of quasar B is found to be steeper in the blue that of the quasar A. The possible presence of a highly redshifted cluster of galaxies in the field of these quasars is suggested by CCD photometry.
http://hdl.handle.net/2268/17773
http://esoads.eso.org/abs/1986A%26A...161..209S
The authors thank EDP Sciences for their deposit authorization

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