OGLE J054610.03-704328.3 , the SIMBAD biblio

2005A&A...442..495D - Astronomy and Astrophysics, volume 442, 495-500 (2005/11-1)

Discovery of nine quasars behind the Large Magellanic Cloud.


Abstract (from CDS):

We present the discovery of nine quasars behind the Large Magellanic Cloud, with emission redshifts ranging from 0.07 to 2.09. Six of them were identified as part of the systematic variability-based search for QSOs in the objects from the OGLE-II database. Combination of variability-based selection of candidates with the candidates' colours appears to be a powerful technique for identifying quasars, potentially reaching ∼50% efficiency. We report an apparent correlation between variability magnitude and variability timescale, which - if confirmed - could put even more constraints on QSO candidate selection. The remaining three quasars were identified via followup spectroscopy of optical counterparts to X-ray sources found serendipitously by the Chandra X-ray Observatory satellite. Even though the locations of the candidates were quite uniformly distributed over the LMC bar, the confirmed QSOs all appear near the bar's outskirts.

Abstract Copyright:

Journal keyword(s): Magellanic Clouds - quasars: general

CDS comments: Paragr. 3.1: L142, L143, L146 = respectively OGLE J054324.00-702023.2, OGLE J054610.03-704328.3, OGLE J054659.65-705443.0. Paragr. 3.2: S1, S12 = respectively OGLE J003850.79-731053.1, OGLE J010234.69-725424.1. Table 1: new quasars = OGLE JHHMMSS.ss+DDMMSS.s in SIMBAD.

Simbad objects: 18

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