257 datasets found

It is the purpose of this paper to rediscuss the circumstellar properties of S stars and to put these properties in perspective with our current understanding of the...

We present a search for SiO masers towards a sample of 126 objects including OH/IR stars, proto-planetary and planetary nebulae. All objects are classified as oxygen-rich, and...

Observations of H_2_O maser sources on the 13.7m radio telescope of Purple Mountain Observatory from 1990 Aug. to 1994 Jan. are summarized. For searching new water masers, the...

We present observations of the region between -45{deg}<=l<=-10{deg} and |b|<=3{deg} in the OH 1612.231MHz line, taken in 1994 January with the Australia Telescope...

We present results of the observations of 17 molecular clouds associated with bright FIR sources in the NH_3_ (1, 1) and (2, 2) lines with the 100-m radio telescope in...

We present observations of the region between |l|<=10{deg} and |b|<=3{deg} in the OH 1612.231MHz line, taken in 1993 October and November with the Australia Telescope...

In this paper we present high resolution images and spectra toward 21 H_2_O maser sources in the vicinity of ultracompact (UC) HII regions. This survey provides the basis for...

We present a survey for OH maser emission at 18cm in the direction of 196 IRAS point sources. The primary aim of the survey was to detect OH maser emission from post-asymptotic...

We have observed CS and C^34^S emission towards 33 H_2_O maser positions in the southern sky ({delta}<-28deg) using the SEST telescope. Most of the sources were selected also...

We present the results of our second search for 6.7-GHz methanol masers towards colour-selected IRAS sources. Five hundred and twenty IRAS sources that meet the far-infrared...

We identified 240 accessible circumstellar shells with water and/or SiO masers, and used the Arecibo and Nancay radio telescopes to search for mainline OH emission from them....

An update is presented of the Arcetri Atlas of water masers (Comoretto et al. 1990A&AS...84..179C). It contains the results of observations of water masers with the Medicina...

The association between galactic H2O masers and IRAS sources from the Point Source Catalog (Cat. II/125) is established for 442 sources out of a list of 505 objects, which...

Understanding the launching mechanism of winds and jets remains one of the fundamental challenges in astrophysics. The``Protostellar Outflows at the Earliest Stages'' (POETS)...

Water maser emission is often found in the circumstellar envelopes of evolved stars, that is, asymptotic-giant-branch stars and red supergiants with oxygen-rich chemistry. The...

We present the results of a search for ammonia maser emission in 119 Galactic high-mass star-forming regions (HMSFRs) known to host 22GHz H_2_O maser emission. Our survey has...

Maser flares are of particular significance for the study of massive star formation as they not only signal but also provide unique insights into transient phenomena such as...

We report the discovery and analysis of a periodic methanol maser in the massive protostar IRAS 20216+4104. To obtain the light curve, we used the 6.7GHz methanol maser spectra...

Class I methanol masers are known to be associated with shocked outflow regions around massive protostars, indicating a possible link between the maser properties and those of...

G25.65+1.04 is one of a few known "super-flare" water masers in the Milky Way, but in contrast to the other sources of the sample, it remains the least studied; in fact, even...