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Absorption Systems in High Redshift QSOs

Published online by Cambridge University Press:  14 August 2015

A. Boksenberg
A. Boksenberg*
Affiliation:
Department of Physics and Astronom University College London Great Britain.

Extract

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In addition to the characteristic emission lines, absorption lines frequently are seen in the spectra of QSOs, usually those with high redshift (zem ≳ 1.8). About 10 percent of all QSOs listed in the compilation of Burbidge et al. (1976a) are recorded as having at least one ‘identified’ absorption system, meaning that a pattern of several selected observed lines can be matched with the apparent wavelengths of transitions (generally from the ground level) in a physical plausible group of atoms or ions at the same, although arbitrary, redshift (Bahcall 1968, Aaronson et al. 1975). Identified absorption line redshifts range from being comparable with the associated emission line redshifts, to having very much smaller values with relative velocities exceeding 0.5c in the QSO frame. Added to this, there are many QSOs having absorption lines not yet recognised as belonging to identified systems, both those objects already having one or more identifications, and others with none.

Type
IV. Optical Spectra and Identifications
Information
Symposium - International Astronomical Union , Volume 74: Radio Astronomy and Cosmology , 1977 , pp. 193 - 222
Copyright
Copyright © Reidel 1977 

References

Aaronson, M., McKee, C.F., and Weisheit, J.C. 1975, Ap.J., 198, 13.CrossRefGoogle Scholar
Anderson, K.S., and Kraft, R.P. 1969, Ap.J., 158, 859.Google Scholar
Arons, J. 1972, Ap.J., 172, 553.Google Scholar
Arp, H., and Bertola, F. 1969, Ap.Letters, 4, 23.Google Scholar
Arp, H., and Bertola, F. 1971, Ap.J., 163, 195.Google Scholar
Bahcall, J.N., Sargent, W.L.W., and Schmidt, M. 1967, Ap.J.(Letters), 149, L11.Google Scholar
Bahcall, J.N. 1968, Ap.J., 153, 679.Google Scholar
Bahcall, J.N., and Wolfe, R.A. 1968, Ap.J., 152, 701.Google Scholar
Bahcall, J.N., and Peebles, P.J.E. 1969, Ap.J.(Letters), 156, L7.CrossRefGoogle Scholar
Bahcall, J.N., and Spitzer, L. 1969, Ap.J.(Letters), 156, L63.Google Scholar
Bahcall, J.N. 1971, A.J., 76, 283.Google Scholar
Bahcall, J.N. 1975, Ap.J.(Letters), 200, L1.Google Scholar
Baldwin, J.A., Burbidge, E.M., Burbidge, G.R., Hazard, C., Robinson, L.B., and Wampler, E.J. 1974, A.P., 193, 513.Google Scholar
Blumenthal, G.R., and Mathews, W.G. 1974, Ap.J., 198, 517.Google Scholar
Boksenberg, A., Kirkham, B., Michelson, E., Pettini, M., Bates, B., Carson, P.P.D., Courts, G.R., Dufton, P.L., and McKeith, C.D. 1975, Phil.Trans.R.Soc.Lond.A., 279, 303.Google Scholar
Boksenberg, A., and Sargent, W.L.W. 1975, Ap.J., 198, 31.Google Scholar
Boksenberg, A., Shortridge, K., Allen, D.A., Fosbury, R.A.E., Penston, M.V., and Savage, A. 1975, Mon.Not.R.Astr.Soc., 173, 381.CrossRefGoogle Scholar
Boksenberg, A., Carswell, R.F., Allen, D.A., Fosbury, R.A.E., Penston, M.V., and Sargent, W.L.W. 1976, Mon.Not.R.Astr.Soc., (in press).Google Scholar
Boksenberg, A., and Penston, M.V. 1976, Non.Not.R.Astr.Soc., (in press).Google Scholar
Boroson, T., Sargent, W.L.W., Boksenberg, A., and Carswell, R.F. 1976 (in preparation).Google Scholar
Brown, R.L., and Roberts, M.S. 1973, Ap.J.(Letters), 184, L7.Google Scholar
Burbidge, E.M., 1968, Ap.J.(Letters), 152, L111.Google Scholar
Burbidge, E.M. 1970, Ap.J.(Letters), 160, L33.Google Scholar
Burbidge, E.M., and Burbidge, G.R. 1975, Ap.J., 202, 287.Google Scholar
Burbidge, E.M., Caldwell, R.D., Smith, H.E., Liebert, J. and Spinrad, H. 1976b, Ap.J.(Letters), 205, L117.Google Scholar
Burbidge, G.R. 1975, Ap.J.(Letters), 196, L7.Google Scholar
Burbidge, G.R., Crowne, A.H., and Smith, H.E. 1976a, (submitted to Ap.J.Suppl.,).Google Scholar
Burbidge, G.R., and Perry, J.J. 1976 (preprint).Google Scholar
Carswell, R.F., Strittmatter, P.A., Williams, R.E., Beaver, E A., and Harms, R. 1975, Ap.J., 195, 269.CrossRefGoogle Scholar
Carswell, R.F., Boksenberg, A., and Sargent, W.L.W. 1976 (in preparation).Google Scholar
Carswell, R.F., Coleman, G. Strittmatter, P.A., and Williams, R.E. 1976 (preprint).Google Scholar
Coleman, G., Carswell, R.F., Strittmatter, P.A., Williams, R.E., Baldwin, J., Robinson, L.B., and Wampler, E.J. 1976, Ap.J., 207, 1.Google Scholar
Davies, R.D. 1974, in Shakeshaft, J.R. (ed), ‘The Formation and Dynamics of Galaxies’, IAU Symposium No. 58, p.119.Google Scholar
de Vaucouleurs, G. 1969, Ap.Letters, 4, 17.Google Scholar
de Vaucouleurs, G., and Corwin, H.G. 1975, Ap.J., 202, 327.Google Scholar
Disney, M.J. 1976, Nature, 263, 573.Google Scholar
Gott, J.R., and Thuan, T.X. 1976, Ap.J., 204, 649.Google Scholar
Grewing, M., and Mebold, U. 1975, Astr. & Ap., 42, 119.Google Scholar
Haschick, A.D., and Burke, B.F., 1975, Ap.J.(Letters), 200, L137.Google Scholar
Huchtmeier, W.K., Tanmann, G.A., and Wendker, H.J. 1975, Astr. & Ap., 42, 205.Google Scholar
Kippenhahn, R., Perry, J.J., and Röser, H.-J. 1974, Astr. & Ap., 34, 211.Google Scholar
Kippenhahn, R., Mestel, L., and Perry, J.J. 1975, Astr. & Ap., 44, 123.Google Scholar
Lowrance, J.O., Morton, D.C., Zucchino, P., Oke, J.B., and Schmidt, M. 1972, Ap.J., 171, 233.CrossRefGoogle Scholar
Lynds, C.R. 1967, Ap.J., 147, 396.Google Scholar
Lynds, C.R. 1971, Ap.J.(Letters), 164, L73.Google Scholar
Lynds, C.R. 1972, in IAU Symposium No. 44: External Galaxies and Quasi-Stellar Objects, ed. Evans, D. S. Dordrecht: Reidel Publ.Co., p.127.Google Scholar
Mathewson, D.S., Cleary, M.N., and Murray, J.D. 1974, Ap.J., 190, 291.Google Scholar
Mathewson, D.S., Cleary, M.N., and Murray, J.D. 1975, Ap.J. (Letters), 195, L97.Google Scholar
McKee, C.F., and Tarter, C.B. 1975, Ap.J., 202, 306.Google Scholar
Mestel, L., Moore, D.W., and Perry, J.J. 1976, Astr. & Ap., 52, 203.Google Scholar
Morton, D.C., and Hu, E.M. 1975, Ap.J., 202, 638.Google Scholar
Morton, D.C. 1976, Ap.J., 203, 386.Google Scholar
Mushotzky, R.F., Solomon, P.M., and Strittmatter, P.A. 1972, Ap.J., 174, 7.Google Scholar
Osterbrock, D.E., Koski, A.T., and Phillips, M.M. 1976, Ap.J.(Letters), 197, L41.Google Scholar
Roberts, M.S., and Rots, A.H. 1973, Astr. & Ap., 26, 483.Google Scholar
Roberts, M.S., Brown, R.L., Brundage, W.D., Rots, A.H., Haynes, M.P., and Wolfe, A.M. 1976, A.J., 81, 293.Google Scholar
Roeder, R.C., and Verreault, R.T. 1969, Ap.J., 155, 1047.Google Scholar
Roeder, R.C. 1972, Ap.J., 171, 451.Google Scholar
Rogstad, D.H., and Shostak, G.S. 1972, Ap.J., 176, 315.Google Scholar
Rogstad, D.H., Lockhart, I.A., and Wright, M.C.H. 1974, Ap.J., 193, 309.Google Scholar
Rose, W.K., and Tinsley, B.M. 1974, Ap.J., 190, 243.Google Scholar
Röser, H.-J. 1975, Astr. & Ap., 45, 329.Google Scholar
Sargent, W.L.W., and Boroson, T.A. 1976 (submitted to Ap.J.,).Google Scholar
Scargle, J.D., Caroff, L.J., and Noerdlinger, P.D. 1970, Ap.J.(Letters), 161, L115.Google Scholar
Scargle, J.D. 1973, Ap.J., 179, 705.Google Scholar
Shostak, G.S. 1974, Astr. & Ap., 31, 97.Google Scholar
Stockton, A.N., and Lynds, C.R. 1966, Ap.J., 144, 451.Google Scholar
Strittmatter, P.A., Carswell, R.F., Burbidge, E.M., Hazard, C., Baldwin, J.A., Robinson, L., and Wampler, E.J. 1973, Ap.J., 183, 767.Google Scholar
Wagoner, R.V. 1967, Ap.J., 149, 465.Google Scholar
Weymann, R.J. 1973, Comm.Ap. and Space Phys., 5, 139.Google Scholar
Weymann, R.J. 1976, Ap.J., 208, 286.Google Scholar
Weymann, R.J., and Cromwell, R. 1972, in IAU Symposium No. 44: External Galaxies and Quasi-Stellar Objects, ed. Evans, D. S., Dordrecht: Reidel Publ.Co., p.155.Google Scholar
Weymann, R.J., Williams, R.E., Beaver, E.A., and Miller, J.S. 1976 (preprint).Google Scholar
Williams, R.E. 1972, Ap.J., 178, 105.Google Scholar
Williams, R.E., Strittmatter, P.A., Carswell, R.F., and Craine, E.R. 1975, Ap.J., 202, 296.Google Scholar
Williams, R.E., and Weymann, R.J. 1976, Ap.J.(Letters), 207, L143.Google Scholar
Wolfe, A.M., Broderick, J.J., Condon, J.J., and Johnston, K.J. 1976, Ap.J.(Letters), 208, L47.Google Scholar