We report R band imaging polarimetry of SN 2004bv in NGC 6907 on June 19.299 (UT middle of observation), i.e., two weeks after maximum. We have obtained [ 0.11...
Optical polarization and spectral properties of the hydrogen-poor superluminous supernovae SN 2021bnw and SN 2021fpl
New optical photometric, spectroscopic, and imaging polarimetry data are combined with publicly available data to study some of the physical properties of the...
The optical morphological and photometric properties of 79 low redshift radio galaxies are discussed. It is found that most radio galaxies are luminous bulge...
Optical properties of metal-poor T dwarf candidates
Context. Metal-poor brown dwarfs are poorly understood because they are extremely faint and rare. Only a few candidates have been identified as T-type subdwarfs...
Optical Properties of the Ultraluminous X-Ray Source Holmberg IX X-1 and Its Stellar Environment
Holmberg IX X-1 is an archetypal ultraluminous X-ray source (ULX). Here we study the properties of the optical counterpart and of its stellar environment using...
Optical properties of Y dwarfs observed with the Gran Telescopio Canarias
Aims: Our science goals are to characterise the optical properties of Y dwarfs and to study their consistency with theoretical models. Methods: A sample of five...
Optical pulsations from the anomalous X-ray pulsar 1E1048.1-5937
We present high-speed optical photometry of the anomalous X-ray pulsar 1E1048.1-5937 obtained with ULTRACAM on the 8.2-m Very Large Telescope in 2007 June. We...
Optical Recombination Lines of Heavy Elements in Giant Extragalactic H II Regions
We present high-resolution observations of the giant extragalactic H II regions NGC 604, NGC 2363, NGC 5461, and NGC 5471, based on observations taken with the...
Optical seeing at La Palma Observatory. 2: Intensive site testing campaign at the Nordic Optical Telescope
The results of an intensive site testing assessment campaign, held at the Observatorio del Roque de los Muchachos (ORM) (La Palma) during four nights on July...