Although fundamental for astrophysics, the processes that produce massive stars are not
well understood. Large distances, high extinction, and short timescales of critical …

▪ Abstract Radio astronomy has provided evidence for the presence of ionized atmospheres
around almost all classes of nondegenerate stars. Magnetically confined coronae dominate …

We describe a systematic program aimed at identifying and characterizing candidate high-
mass protostellar objects (HMPOs). Our candidate sample consists of 69 objects selected by …

Synchrotron emission is commonly found in relativistic jets from active galactic nuclei
(AGNs) and microquasars, but so far its presence in jets from young stellar objects (YSOs) …

We present high spatial resolution observations of the multiple protostellar system IRAS
16293-2422 using the Submillimeter Array (SMA) at 300 GHz and the Very Large Array …

We used the IRAM interferometer to obtain subarcsecond resolution observations of the high-
mass star-forming region W3 (OH) and its surroundings at a frequency of 220 GHz. With the …

Using high angular resolution (~ 0 farcs 25-0 farcs 05) Very Large Array (VLA) observations
made at 3.6 cm, 1.3 cm, and 7 mm during the period 1991-2004, we report the detection of …

We review some aspects of the bipolar molecular outflow phenomenon. In particular, we
compare the morphological properties, energetics and velocity structures of outflows from …

We present a multiline mm-wave survey of SiO emission towards a sample of star-forming
regions associated with molecular and Herbig-Haro outflows. The sample includes sources …

We present five epochs of VLBI water maser observations around the massive protostar
Cepheus A HW2 with 0.4 mas (0.3 au) resolution. The main goal of these observations was …