The Double Nucleus Galaxies MKN 423 and MKN 739
نویسندگان
چکیده
منابع مشابه
The cometary blue compact dwarf galaxies Mkn 59 and Mkn 71 A clue to dwarf galaxy evolution ?
“Cometary” Blue Compact Dwarf Galaxies (iI,C BCDs) are characterized by an off–center starburst close to the end of their elongated stellar bodies. This rare phenomenon may carry some clues on how collective star formation ignites and propagates in gas–rich low–mass stellar systems. This off– center burst may be a fortuitous enhancement of the otherwise moderate star–forming activity of a dwarf...
متن کامل1 - 1 1 the Double Nucleus
Long slit spectroscopy and imaging of Mkn 423 and Mkn 739 have been performed at the 2.2 m and 3.5 m telescopes of the Calar Alto Observatory using both CCD and photographic detectors. Low and medium resolution spectra (l.8A, 3 . d ) 6.0A) together with V images have permitted to demonstrate the merging nature of Mkn 423 and the double structure of the NLR of its Seyfert component. This last fe...
متن کاملThe interacting Wolf - Rayet galaxy Mkn 8
We present results of narrow-band and broad-band optical CCD imaging together with intermediate-resolution spectroscopy of the Wolf-Rayet galaxy Mkn 8. Analysis of the morphology and kinematics of the object indicates that the strong star formation episode we are witnessing in Mkn 8 is the product of the interaction of two (or three) disk galaxies. The chemical abundances and abundance ratios m...
متن کاملStar formation in Blue Compact Dwarf Galaxies : Mkn 104 and I Zw 97
Two blue compact dwarf galaxies Mkn 104 and I Zw 97 are studied photometrically and spectroscopically. Mkn 104 is found to contain three distinct bright star forming regions, whereas I Zw 97 is found to contain three bright and two faint star forming regions. Medium resolution spectra of three bright H ii regions in the two galaxies were obtained. Estimation of oxygen abundance in these regions...
متن کاملSpace Vlbi Observations of Mkn 501
We present here two epochs of Space VLBI Observations at 18 cm of the BL-Lac type object Mkn 501. Thanks to the high resolution of these new data we have found that the inner jet is centrally brightened at its beginning but becomes extended and limb brightened at ∼ 8 mas from the core. Moreover a comparison between the two epochs shows the presence of a proper motion with apparent velocity = 6....
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1990
ISSN: 0252-9211
DOI: 10.1017/s0252921100005145