An aggregation-induced emission star polymer with pH and metal ion responsive fluorescence

A one-pot strategy from ring-opening metathesis polymerization was employed to prepare AIE-active star polymers, which were designed to have multi-responsive fluorescence to varied stimuli including pH, CO2, and metal ions.

Wolf-Rayet and OF stars in the OB associations LH 101 and LH 104 in the LMC

We observed in the Large Magellanic Cloud the associations LH 101 and LH 104, containing six Wolf-Rayet stars: one WN and five WCE subtypes. These regions are located south of the 30 Dor nebula. The new observations include UBV photometry for a thousand stars and spectroscopy in the range from 3600 to 5300 Å for about 90 stars. In LH 101 an 06.5f, an 06.5 + WN8 and a hydrogen emission star are identified. Cluster HR diagrams of these OB associations reveal their age structure.

The Vatican Emission Star Survey: Review and Comments

Eight years ago a program was started at the Vatican Observatory to search for faint emission-line stars close to the galactic plane. Indeed at that time few early type emission stars were known fainter than V = 12. This survey consists in a double program:the search for emission line stars with the Vatican Schmidt using the objective prism and an appropriate combination of plate and filter in order to have a narrow passband around Hα(McCarthy Treanor 1970);and UBVRI photometry at the Mt. Lemmon facilities of the Univ. of Arizona observatories. Five papers have already been published(Coyne et al 1974, 1975, 1978;Wisniewski et al 1976, 1977). Two more will be published later this year. The Vatican Emission Star Survey(VES) resulted in the discovery of about 1000 new emission-line stars; for 700 of those the photometry is finished.