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1.	Ferreira, Mjv, et al. (author) Poster Session 3 : Tuesday 5 May 2015, 08 2015 In: European Heart Journal Cardiovascular Imaging. - : Oxford University Press (OUP). - 2047-2404 .- 2047-2412. ; 16 Suppl 1 Journal article (peer-reviewed)
2.	Ronnback, J., et al. (author) Host galaxies of intermediate redshift radio-loud and radio-quiet quasars 1996 In: Monthly notices of the Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 283:1, s. 282-296296 Journal article (peer-reviewed)abstract In a search for host galaxies associated with quasars, the authors present results from deep CCD imaging using the European Southern Observatory 3.5-m New Technology Telescope. Altogether 21 targets, 12 radio-loud and nine radio-quiet quasars, were observed in R, and additional V and Gunn i images were collected for a subgroup of these. The quasar redshifts are between 0.4 and 0.8, a range largely unexplored in previous studies. At these redshifts the R band corresponds to a rest-frame wavelength between 4600 and 3600 Aring. Thus, the authors are primarily probing the light from young stellar components of the presumed host galaxies. To separate out the light originating from the host object the authors remove the quasar contribution by scaling the point spread function (PSF). The PSF is a combination of an empirical PSF model, derived from stars lying in the same field as the quasars (used for the core of the PSF), and an analytical model for the wings of the PSF. After PSF subtraction of the QSO image the authors identify extended residual objects in 17 targets (nine in radio-loud and eight in radio-quiet quasars), of which a few are only marginal detections. These objects are large and luminous and their colours are relatively blue. Their V-R colours are consistent with a stellar population typical of late-type spirals and irregular galaxies. The blue colours could be caused by recent star formation events or by scattering of the QSO light

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Hansen, E. (1); Costa, G. (1); Martin, J. (1); Keller, M. (1); Sörensen, Jens (1); Sorensen, J (1); show more...; Hassan, A (1); Soares, J (1); Abdelkader, M. (1); Martinez, F. (1); Ramos, D (1); Patel, K (1); Jukema, J. W. (1); Foley, J (1); Mostafa, S (1); Sayed, S (1); Amin, A. (1); Yoshida, H (1); Bertuccio, G. (1); Kero, Tanja (1); Saraste, A. (1); Knuuti, J. (1); Cohen, M. (1); Tornos, P (1); Mushtaq, S (1); RONNBACK, J (1); Bertella, E (1); Baggiano, A (1); Petulla', M (1); Conte, E (1); Andreini, D (1); Pontone, G (1); De Graaf, M A (1); Bax, J J (1); Scholte, A J (1); Thackeray, J T (1); Bengel, F M (1); Harms, H J (1); Tolbod, L P (1); Hansson, N H (1); Kim, W Y (1); Bouchelouche, K (1); Wiggers, H (1); Frokiaer, J (1); Erglis, A (1); Kornowski, R (1); Mintale, I (1); Matsumura, A (1); Dimulescu, D (1); Huidu, S (1); show less...

University: Uppsala University (2)Undo refine

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (1)

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