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Orion Source I 3mm SiO maser emission
High-mass star formation remains poorly understood due to observational difficulties (e.g. high dust extinction and large distances) hindering the resolution of disk-accretion... -
Spectrum of Orion KL between 41.5 and 50GHz
We resent a sensitive spectral survey of Orion KL in Q-band (7mm), made with one of the 34m antennas of the Madrid Deep Space Communications Complex in Robledo de Chavela, Spain. -
Giant molecular filaments in the Milky Way
Filamentary structures are common morphological features of the cold, molecular interstellar medium (ISM). Recent studies have discovered massive, hundred-parsec-scale filaments... -
Database of circumstellar OH masers
We present a new database of circumstellar OH masers at 1612, 1665, and 1667MHz in the Milky Way galaxy. The database (version 2.4) contains 13655 observations and 2341... -
Water maser emission toward post-AGB and PN
Water maser emission at 22GHz is a useful probe for studying the transition between the nearly spherical mass loss in the asymptotic giant branch (AGB) to a collimated one in... -
6.7GHz methanol maser polarization in SFR
Theoretical simulations and observations at different angular resolutions have shown that magnetic fields have a central role in massive star formation. Like in low-mass star... -
H_2_O spectra of W33B in 1981-1985
The active star-forming region W33B is a source of OH and H_2_O maser emission located in distinct zones around the central object. The aim was to obtain the complete Stokes... -
Mid-IR properties of OH maser galaxies
We compiled all 119 OH maser galaxies (110 out of them are megamasers, i.e., L_OH_>10L_{sun}) published so far and cross-identified these OH masers with the Wide-Field... -
Spiral structure of the Milky Way
We have updated the catalogs of Galactic HII regions, giant molecular clouds (GMCs), and 6.7-GHz methanol masers to outline the spiral structure of our Galaxy. The related... -
CH_3_OH and H_2_O Galactic center masers
We present a study of star formation in the central molecular zone (CMZ) of our Galaxy through the association of three star formation indicators: 6.7GHz CH_3_OH masers, 22GHz... -
GLIMPSE/BGPS 6.7GHz methanol maser survey
We present the results of a 6.7GHz methanol maser survey from the Effelsberg 100m radio telescope. A sample of 404 sources from the Bolocam Galactic Plane Survey (BGPS) 1.1mm... -
Massive star-forming regions radio lines
We present Australia Telescope Compact Array (ATCA) observations of the H_2_O maser line and radio continuum at 18.0GHz and 22.8GHz toward a sample of 192 massive star-forming... -
22-GHz water maser clouds
Cool, evolved stars undergo copious mass loss but the detailed mechanisms and the form in which the matter is returned the ISM are still under debate. We investigated the... -
VLBA SiO maser maps of the star OH 44.8-2.3
SiO maser emission occurs in the extended atmosphere of evolved stars and can be studied at high angular resolution. As compact, high-brightness components they can be used as... -
Megamaser detection in Seyfert galaxies
We revisit the relation between H_2_O maser detection rate and nuclear obscuration for a sample of 114 Seyfert galaxies, drawn from the CfA, 12um and IRAS F25/F60 catalogs.... -
Distances towards 6.7GHz methanol masers
Distances to most star forming regions are determined using kinematics, through the assumption that the observed radial velocity arises from the motion of the source with... -
Interferometric study of SgrB2(N)
Amino acids are building blocks of proteins and therefore key ingredients for the origin of life. The simplest amino acid, glycine (NH2CH2COOH), has long been searched for in... -
ATCA 3mm obs. of NGC 6334I and NGC 6334I(N)
We investigate the dense gas, the outflows, and the continuum emission from the massive twin cores NGC 6334I and I(N) at high spatial resolution. We imaged the region with the... -
Mid-IR and radio interferometry of S Ori
We present the first multi-epoch study that includes concurrent mid-infrared and radio interferometry of an oxygen-rich Mira star. We obtained mid-infrared interferometry of S... -
High-resolution images in Cep-A HW2 region
Due to its relatively small distance (725pc), the Cepheus A East star-forming region is an ideal laboratory to study massive star formation processes. Based on its morphology,...
