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Issue A&A
Volume 435, Number 2, May IV 2005
Page(s) 465 - 469
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20042524



A&A 435, 465-469 (2005)
DOI: 10.1051/0004-6361:20042524

SDSS J1553+0056: A BALQSO mimicking a Lyman-break galaxy

I. Appenzeller1, O. Stahl1, C. Tapken1, D. Mehlert1 and S. Noll2

1  Landessternwarte, Königstuhl, 69117 Heidelberg, Germany
    e-mail: I.Appenzeller@lsw.uni-heidelberg.de
2  Max-Planck-Institut für extraterrestrische Physik, Giessenbachstr., 85741 Garching, Germany

(Received 13 December 2004/ Accepted 12 January 2005)

Abstract
Using the UVES echelle spectrograph at the ESO VLT we obtained high-resolution ( $R = 40\,000$) spectra of the object SDSS J1553+0056, which has been identified in the literature alternatively as a high-redshift quasar or as a Lyman-break galaxy (LBG). Although low-resolution spectra of SDSS J1553+0056 closely resemble those of LBGs, our high-resolution spectra allow us to identify this object unambiguously as a LoBAL quasar, probably belonging to the rare FeLoBALQSO class. Based on our spectrum we discuss how misidentifications of such objects from low-resolution spectra can be avoided.


Key words: galaxies: high-redshift -- galaxies: starburst -- quasars: absorption lines -- quasars: general

SIMBAD Objects



© ESO 2005

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