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THE PROPORTION OF ULTRALUMINOUS IRAS GALAXIES IN INTERACTING SYSTEMS
ZOU, ZL; XIA, XY; DENG, ZG; SU, HJ
1991-10-15
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume252Issue:4Pages:593-599
Corresponding AuthorZOU, ZL()
AbstractWe have examined a sample consisting of 41 ultraluminous IRAS galaxies with far-infrared luminosities LIR > 10(12) L. (H0 = 50 km s-1 Mpc-1), and a control sample of 41 low-luminosity IRAS galaxies with LIR < 10(9.7) L.. All objects are taken from the southern part (delta < -17.5-degrees) of the QDOT (QMW-Durham-Oxford-Toronto) survey, a random one-in-six sample with IRAS 60-mu-m flux density S(60) > 0.6 Jy. Their images on the film copies of the SERC Sky Survey were scanned with a pixel size of 5-mu-m (0.34 arcsec) over a square area of typically 67.2 arcsec to the side, using the microdensitometer PDS of the Purple Mountain Observatory. The density contour maps and the sky survey material show that the proportion of ultraluminous IRAS galaxies which are interacting or merger systems, 61 +/- 12 per cent, is much higher than that of low-luminosity ones (10 +/- 5 per cent), but still well short of the 100 per cent suggested in several recent reports. This result seems to support the conclusion that galaxy interaction or merging is more common at high-IR luminosity, but it is probably not the only cause of their activity.
WOS KeywordINFRARED GALAXIES ; SPIRAL GALAXIES ; STAR FORMATION ; ORIGIN
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:A1991GK81500010
PublisherBLACKWELL SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8556
Collection期刊(老文献)
Corresponding AuthorZOU, ZL
Affiliation1.TIANJING NORMAL UNIV,DEPT PHYS,TIANJIN 300074,PEOPLES R CHINA
2.CHINESE ACAD SCI,GRAD SCH,BEIJING 100039,PEOPLES R CHINA
3.CHINESE ACAD SCI,PURPLE MT OBSERV,NANJING,PEOPLES R CHINA
Recommended Citation
GB/T 7714
ZOU, ZL,XIA, XY,DENG, ZG,et al. THE PROPORTION OF ULTRALUMINOUS IRAS GALAXIES IN INTERACTING SYSTEMS[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,1991,252(4):593-599.
APA ZOU, ZL,XIA, XY,DENG, ZG,&SU, HJ.(1991).THE PROPORTION OF ULTRALUMINOUS IRAS GALAXIES IN INTERACTING SYSTEMS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,252(4),593-599.
MLA ZOU, ZL,et al."THE PROPORTION OF ULTRALUMINOUS IRAS GALAXIES IN INTERACTING SYSTEMS".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 252.4(1991):593-599.
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