Zobrazeno 1 - 10
of 43
pro vyhledávání: '"E. J. Wampler"'
Publikováno v:
Structure and Dynamics of the Interstellar medium ISBN: 9783540519560
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f4e3f190b26d0d6cd19a3020cee12ba
https://doi.org/10.1007/bfb0114862
https://doi.org/10.1007/bfb0114862
Autor:
E. J. Wampler
If the unexpectedly high frequency of quasar pairs with very different component redshifts is due to the lensing of a population of background quasars by the foreground quasar, typical lens masses must be $\sim10^{12}M_{\sun}$ and the sum of all such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40de4c4b5d9aaaa82ece0cc56d0443d8
http://arxiv.org/abs/astro-ph/9612077
http://arxiv.org/abs/astro-ph/9612077
Autor:
E. J. Wampler
Publikováno v:
QSO Absorption Lines ISBN: 9783662223734
Echelle spectra of the z = 1.58 broad absorption line (BAL) quasar, Q 0059—2735, show a wealth of absorption lines, mostly from iron-peak elements. Lines from the ground state and from metastable levels up to nearly 4 e.v. are seen. From the absorp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a8d7454b8ab6f1d536bdb21b3000f9
https://doi.org/10.1007/978-3-540-49458-4_47
https://doi.org/10.1007/978-3-540-49458-4_47
Autor:
E. J. Wampler
Publikováno v:
Nature. 383:308-308
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8daa2b292b07f041fb6761829f43ab8e
https://doi.org/10.1038/383308a0
https://doi.org/10.1038/383308a0
Publikováno v:
The Astrophysical Journal. 409:592
Recent observational evidence suggests that the metallicity in quasars within a wide range of redshifts, in particular in gas flowing out of the nuclear regions, may be approximately redshift-independent and comparable with or larger than solar. It i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f7f129bc386c79e7f9d05887ada5dcb
https://doi.org/10.1086/172690
https://doi.org/10.1086/172690
Publikováno v:
Nature. 273:431-435
Observations of flat radio spectrum QSOs selected from complete samples confirm the strong correlation between continuum luminosity and emission line equivalent width. The r.m.s. scatter about a mean relationship is about 0.6 mag. The data indicate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37ec92e6c5c651a7f8889930202349c1
https://doi.org/10.1038/273431a0
https://doi.org/10.1038/273431a0
Autor:
Bruce A. Peterson, Paul Murdin, R. A. E. Fosbury, I. J. Danziger, David A. Allen, B. L. Webster, E. J. Wampler, J. A. J. Whelan, Martin Ward, M. V. Penston
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 180:657-673
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd7f7802686bbccea9ff301fbd22a8a2
https://doi.org/10.1093/mnras/180.4.657
https://doi.org/10.1093/mnras/180.4.657
Autor:
D. Ponz, E. J. Wampler
Publikováno v:
Symposium - International Astronomical Union. 119:439-445
Systematic biases that are redshift dependent can influence the optical discovery of quasars and the evolution laws derived from counts of quasars. New data and their interpretation for quasars brighter than MB = −24 in the Palomar Bright Quasar Su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebd213bfa92e3d1903d3b25a340b679f
https://doi.org/10.1017/s0074180900153185
https://doi.org/10.1017/s0074180900153185
Publikováno v:
CIÊNCIAVITAE
Scopus-Elsevier
Scopus-Elsevier
Quasar spectra have been used to identify gravitational lens candi-dates1–6, often in the absence of other evidence, and it has even been suggested7 that they can be used as reliably as fingerprints to uniquely identify individual objects. Here we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7548f5c526c7eb7144ec5b1a86e7765b
https://doi.org/10.1038/327040a0
https://doi.org/10.1038/327040a0