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209 papers · 1 filter
GTC/OSIRIS observations of RWT 152, a case study of a planetary nebula with an sdO central star
A. Aller, L. F. Miranda, L. Olguín +2
RWT 152 is one of the few planetary nebula with an sdO central star. We present subarcsecond red tunable filter imaging and intermediate-resolution, long-slit spectroscopy of RWT 1…
Balmer line shifts in quasars
J. W. Sulentic, P. Marziani, A. Del Olmo +1
We offer a broad review of Balmer line phenomenology in type 1 active galactic nuclei, briefly sum- marising luminosity and radio loudness effects, and discussing interpretation in…
Polarimetry of the superluminous supernova LSQ14mo: no evidence for significant deviations from spherical symmetry
Giorgos Leloudas, Ferdinando Patat, Justyn R. Maund +10
We present the first polarimetric observations of a Type I superluminous supernova (SLSN). LSQ14mo was observed with VLT/FORS2 at five different epochs in the V band, with the obse…
Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron. I. Imaging BL Lacertae at 21 microarcsecond resolution
José L. Gómez, Andrei P. Lobanov, Gabriele Bruni +10
We present the first polarimetric space VLBI imaging observations at 22 GHz. BL Lacertae was observed in 2013 November 10 with the RadioAstron space VLBI mission, including a groun…
Are fractured cliffs the source of cometary dust jets ? Insights from OSIRIS/Rosetta at 67P
J. -B. Vincent, N. Oklay, M. Pajola +52
Dust jets, i.e. fuzzy collimated streams of cometary material arising from the nucleus, have been observed in-situ on all comets since the Giotto mission flew by comet 1P/Halley in…
Red galaxies with pseudo-bulges in the SDSS: closer to disk galaxies or to classical bulges?
B. Ribeiro, C. Lobo, S. Antón +2
Pseudo-bulges are expected to markedly differ from classical, quasi-monolithically forming bulges in their star formation history (SFH) and chemical abundance patterns. To test thi…