The goal in writing this paper is five fold:(1) to summarize the scientific achievements in the
20th century on S Dor variables (or LBVs);(2) to present an inventory of these variables in …

We present new light curves and optical spectra for a number of extragalactic optical
transients or 'supernova impostors' related to giant eruptions of luminous blue variables …

We present new observations of η Carinae, strongly suggesting that it is a binary system.
High dispersion measurements of the broad Paγ emission line show periodic radial velocity …

We present new spectroscopic and photometric data of the Type Ibn supernovae 2006jc,
2000er and 2002ao. We discuss the general properties of this recently proposed supernova …

We present evidence for the formation of dust grains in an unusual Type Ib supernova (SN)
based on late-time spectra of SN 2006jc. The progenitor suffered an outburst qualitatively …

We present a catalog of 5324 massive stars in the Small Magellanic Cloud (SMC), with
accurate spectral types compiled from the literature, and a photometric catalog for a subset …

In a previous paper on the Magellanic Clouds, we demonstrated that coeval clusters provide
a powerful tool for probing the progenitor masses of Wolf-Rayet (WR) stars and luminous …

New NTT/EMMI spectrophotometry of single WN2–5 stars in the Small and Large Magellanic
Clouds are presented, from which He ii λ4686 line luminosities have been derived, and …

Infrared Spectra of Massive Stars in Transition: WNL, Of, Of/WN, Be, B[e], and L ADS Classic is
now deprecated. It will be completely retired in October 2019. This page will automatically …

We combine new CCD UBV photometry and spectroscopy with those from the literature to
investigate 19 Magellanic Cloud OB associations that contain Wolf-Rayet (WR) and other …