4U0241+61: a luminous low-redshift QSO

A PRECISE (30″) celestial position for the faint (1.8 µJy, 2–11 keV) X-ray source 4U0241+61 (ref. 1) and its identification at optical and radio wavelengths are reported here. Despite its low galactic latitude ( b II = +2.4), the source is extragalactic: a luminous ( M v = −25.8±1.8), low-redshift (...

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Bibliographic Details
Published in:Nature (London) 1978-06, Vol.273 (5662), p.450-453
Main Authors: APPARAO, K. M. V, BIGNAMI, G. F, MARASCHI, L, HELMKEN, H, MARGON, B, HJELLMING, R, BRADT, H. V, DOWER, R. G
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:A PRECISE (30″) celestial position for the faint (1.8 µJy, 2–11 keV) X-ray source 4U0241+61 (ref. 1) and its identification at optical and radio wavelengths are reported here. Despite its low galactic latitude ( b II = +2.4), the source is extragalactic: a luminous ( M v = −25.8±1.8), low-redshift ( z = 0.0438) QSO with relatively intense radio emission (0.2–;0.5 Jy).
ISSN:0028-0836
1476-4687
DOI:10.1038/273450a0