ner_tags: O O O O O O O O O O B-Telescope I-Telescope I-Telescope B-Wavelength O O O O O O O B-Observatory I-Observatory O O O O O O O O O O B-Organization O B-Grant B-Grant O B-Grant O O O O O O O B-Database I-Database I-Database I-Database I-Database I-Database B-Database B-Database O O O B-Database I-Database I-Database O O B-Organization B-Location I-Location
tokens: This work is based on observations carried out with the IGN 40 m radio telescope. We thank all the staff in Yebes Observatory for the generous help received. We acknowledge partial funding from MINECO grants AYA2012-32032, FIS2012-32096, and FIS2012-38160. This work has made use of the American Association of Variable Star Observers (AAVSO) database and of the SIMBAD Astronomical database (operated at CDS, Strasbourg, France).