Sobolev, A. M., Cragg, D. M., Ellingsen, S. P., Gaylard, M. J., Goedhart, S., Henkel, C., ...
General characteristics of methanol (CH3OH) maser emission are summarized. It is shown that methanol maser sources are concentrated in the spiral arms. Most of the methanol maser sources from the...
Investigating high-mass star formation through maser surveys (2007)
Ellingsen, S. P., Voronkov, M. A., Cragg, D. M., Sobolev, A. M., Breen, S. L., Godfrey, P. D.
Interstellar masers are unique probes of the environments in which they arise. In studies of high-mass star formation their primary function has been as signposts of these regions and they have been...
The Australia Telescope campaign to study southern class I methanol masers (2007)
Voronkov, M. A., Brooks, K. J., Sobolev, A. M., Ellingsen, S. P., Ostrovskii, A. B., Caswell, J. L.
The Australia Telescope Compact Array (ATCA) and the Mopra facility have been used to search for new southern class I methanol masers at 9.9, 25 (J=5) and 104 GHz, which are thought to trace more...
Class I methanol masers in the outflow of IRAS 16547-4247 (2006)
Voronkov, M. A., Brooks, K. J., Sobolev, A. M., Ellingsen, S. P., Ostrovskii, A. B., Caswell, J. L.
The Australia Telescope Compact Array (ATCA) has been used to image class I methanol masers at 9.9, 25 (a series from J=2 to J=9), 84, 95 and 104 GHz located in the vicinity of IRAS 16547-4247...
Jones, P. A., Sarkissian, J. M., Burton, M. G., Voronkov, M. A., Filipovic, M. D.
We present radio observations of comet 9P/Tempel 1 associated with the Deep Impact spacecraft collision of 2005 July 4. Weak 18-cm OH emission was detected with the Parkes 64-m telescope, in data...
Methanol Masers and Star Formation (2006)
Sobolev, A. M., Ostrovskii, A. B., Kirsanova, M. S., Shelemei, O. V., Voronkov, M. A., Malyshev, A. V.
Methanol masers which are traditionally divided into two classes provide possibility to study important parts of the star forming regions: Class~II masers trace vicinities of the massive YSOs while...
The 6.7-GHz and 25-GHz methanol masers in OMC-1 (2005)
Voronkov, M. A., Sobolev, A. M., Ellingsen, S. P., Ostrovskii, A. B.
The Australia Telescope Compact Array (ATCA) has been used to search for methanol maser emission at 6.7 GHz towards OMC-1. Two features peaking at 7.2 km/s and -1.1 km/s have been detected. The...
Maser action in methanol transitions (2004)
Voronkov, M. A., Sobolev, A. M., Ellingsen, S. P., Ostrovskii, A. B., Alakoz, A. V.
We report the detection with the ATCA of 6.7 GHz methanol emission towards OMC-1. The source has a size between 40'' and 90'', is located to the south-east of Ori-KL and may coincide in position with...
Methanol and H2o Masers in a Disk Around GL2789 (2003)
Slysh, V. I., Voronkov, M. A., Val'tts, I. E., Migenes, V.
VLBA and EVN radio observations of H2O masers at 22 GHz and methanol masers at 6.7 GHz have been used to obtain images of the maser spots in the infrared object GL2789, which is associated with the...
EVN observations of 6.7 GHz methanol masers from Medicina survey (2002)
Voronkov, M. A., Slysh, V. I., Palagi, F., Tofani, G.
We report VLBI observations of methanol masers in the brightest 5(1)-6(0) A+ transition at 6.7 GHz in NGC 281W, 18151-1208 and 19388+2357. Using the fringe rate method absolute positions were...
Protoplanetary disk in V645 Cyg as seen with H2O and methanol masers (2002)
Val'tts, I. E., Slysh, V. I., Voronkov, M. A., Migenes, V.
Radio images of maser spots in the infrared source GL2789, connected with the young stellar object V645 Cyg, have been obtained as a result of the radio interferometric observations of H2O maser at...
Torsionally excited methanol at 44.9 GHz (2002)
Voronkov, M. A., Austin, M. C., Sobolev, A. M.
Using the Haystack Observatory 37-m radio telescope we have undertaken a search for emission in the 2(0)-3(1)E rotational transition of methanol in its first torsionally excited state (v_t=1) at 44.9...
A search for 4750- and 4765-MHz OH masers in Southern Star Forming Regions (2002)
Dodson, R., Ellingsen, S. P., Voronkov, M. A.
We have used the Australia Telescope Compact Array (ATCA) to make a sensitive (5-$\sigma$ $\simeq$ 100 mJy) search for maser emission from the 4765-MHz $^2\Pi_{1/2}$ F=1$\to$0 transition of OH. Fifty...
Milliarcsecond structure of methanol masers in L1206 and GL2789 (2001)
We report results of EVN interferometric study of two star-forming regions L1206 and GL2789 in the brightest methanol maser line at 6.7 GHz. Using measured absolute positions both methanol masers...
Space-VLBI observations of OH masers (2001)
Slysh, V. I., Voronkov, M. A., Val'tts, I. E., Migenes, V., Shibata, K. M., Umemoto, T.
We report on the first space-VLBI observations of the OH masers in two main-line OH transitions at 1665 and 1667 MHz. The observations involved the space radio telescope on board the Japanese...
Space-VLBI observations of OH maser OH34.26+0.15: low interstellar scattering (2000)
Slysh, V. I., Voronkov, M. A., Migenes, V., Shibata, K. M., Umemoto, T., Altunin, V. I., ...
We report on the first space-VLBI observations of the OH34.26+0.15 maser in two main line OH transitions at 1665 and 1667 MHz. The observations involved the space radiotelescope on board the Japanese...
Detection of new sources of methanol emission at 107 and 108 GHz with the Mopra telescope (1999)
Valtts, I. E., Ellingsen, S. P., Slysh, V. I., Kalenskii, S. V., Otrupcek, R., Voronkov, M. A.
A southern hemisphere survey of methanol emission sources in two millimeter wave transitions has been carried out using the ATNF Mopra millimetre telescope. Sixteen emission sources have been...