Lars E B Johansson

Visar 31 publikationer

2012

Class I methanol masers in low-mass star formation regions

S.V. Kalenskii, V.I. Slysh, Lars E B Johansson et al
Proceedings of the International Astronomical Union. Vol. 8 (S287), p. 161 - 165
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2010

Search for Class I methanol masers in low-mass star formation regions

S. V. Kalenskii, Lars E B Johansson, Per Bergman et al
Monthly Notices of the Royal Astronomical Society. Vol. 405 (1), p. 613-620
Artikel i vetenskaplig tidskrift
2010

Spectral scan of the star-forming region DR21(OH). Observations and LTE analysis

S. V. Kalenskii, Lars E B Johansson
Astronomy Reports. Vol. 54 (4), p. 295-316
Artikel i vetenskaplig tidskrift
2010

Spectral survey of the star-forming region W51 e1/e2 at 3 mm

S. V. Kalenskii, Lars E B Johansson
Astronomy Reports. Vol. 54 (12), p. 1084-1104
Artikel i vetenskaplig tidskrift
2010

VLA Observations of Class I Methanol Masers in the Region of Low-Mass Star Formation L1157

S. V. Kalenskii, S. Kurtz, V. I. Slysh et al
Astronomy Reports. Vol. 54 (10), p. 932-939
Artikel i vetenskaplig tidskrift
2009

Prestellar and protostellar cores in Orion B9

O. Miettinen, J. Harju, L.K. Haikala et al
Astronomy and Astrophysics. Vol. 500, p. 845-860
Artikel i vetenskaplig tidskrift
2008

Star formation around the HII region Sh2-235

M.S. Kirsanova, A.M. Sobolev, Magnus Thomasson et al
Monthly Notices of the Royal Astronomical Society. Vol. 388 (2), p. 729-736
Artikel i vetenskaplig tidskrift
2007

CO and CS in the Magellanic Clouds: a χ2-analysis of multitransitional data based on the MEP radiative transfer model

S. Nikolic', G. Garay, M. Rubio et al
Astronomy & Astrophysics. Vol. 471, p. 561-571
Artikel i vetenskaplig tidskrift
2007

Methanol masers in star forming sites of the perseus spiral arm

A.M. Sobolev, M.S. Kirsanova, N.V. Pankratova et al
Proceedings of "Millimeter wave astronomy and star formation", ed. I. Zinchenko, Nizhny Novgorod, Russia, August 2007, Inst. of Applied Physics RAS, p. 61-67
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2007

Molecular multi-line and dust continuum studies of high mass star forming regions

I. Zinchenko, P. Caselli, Lars E B Johansson et al
Proceedings of "Millimeter wave astronomy and star formation", ed. I. Zinchenko, Nizhny Novgorod, Russia, August 2007, Inst. of Applied Physics RAS, p. 108-114
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2007

Chemical differentiation in regions of high-mass star formation. CS, dust, and N2H+ in southern sources

L. Pirogov, I. Zinchenko, P. Caselli et al
A&A. Vol. 461, p. 523-535
Artikel i vetenskaplig tidskrift
2007

Molecular oxygen in the p Ophiuchi cloud

B. Larsson, René Liseau, L. Pagani et al
Astronomy & Astrophysics. Vol. 466, p. 999-1003
Artikel i vetenskaplig tidskrift
2007

A CO 13CO and C18O survey of cold IRAS sources

N. Troitsky, I. Zinchenko, L. Pirogov et al
Proceedings of "Millimeter wave astronomy and star formation", ed. I. Zinchenko, Nizhny Novgorod, Russia, August 2007, Inst of Applied Physics RAS, p. 68-72
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006

Do Large Scale Shocks Trigger Massive Star Formation in Perseus Spiral Arm?

A.M. Sobolev, M.S. Kirsanova, Lars E B Johansson et al
Triggered Star Formation in a Turbulent ISM, International Astronomical Union. Symposium no. 237, held 14-18 August, 2006 in Prague, Czech Republic. Vol. S237 (#214)
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006

Rotating elephant trunks*

G.F. Gahm, P. Carlqvist, Lars E B Johansson et al
Astronomy & Astrophysics. Vol. 454, p. 201-212
Artikel i vetenskaplig tidskrift
2006

Low-mass star formation in Lynds 1333

Maria Kun, S. Nikolic', Lars E B Johansson et al
M.N.R.A.S.. Vol. 371 (2), p. 732-
Artikel i vetenskaplig tidskrift
2006

APEX: the Atacama Pathfinder EXperiment

R. Güsten, Roy Booth, C. Cesarsky et al
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6267
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006

Molecular Survey of Massive Star Forming Regions Located in Perseus Spiral Arm

M.S. Kirsanova, A.M. Sobolev, Magnus Thomasson et al
Triggered Star Formation in a Turbulent ISM, International Astronomical Union. Symposium no. 237, held 14-18 August, 2006 in Prague, Czech Republic. Vol. S237 (#145)
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2005

Analysis of Spatial Temperature Variations in Regions of Massive Star Formation

S. Malafeev, I. Zinchenko, L. Pirogov et al
Astronomy Letters. Vol. 31, p. 239-244
Artikel i vetenskaplig tidskrift
2005

Physical and chemical structure of dense cores in regions of high mass star formation

I. Zinchenko, L. Pirogov, P. Caselli et al
Proceedings of "Massive Star Birth: A Crossroad of Astrophysics", IAU Symp. 227, May 2005, Italy, Cambridge University Press, eds. R. Cesaroni, M. Felli, E. Churchwell, M. Walmsley, p. 92-97
Paper i proceeding
2004

The IC2118 association: New T Tauri stars in high-latitude molecular clouds

M. Kun, T. Prusti, Silvana Nicolic´ et al
Astronomy & Astrophysics. Vol. 418, p. 89-98
Artikel i vetenskaplig tidskrift
2004

CO in M51

Gustaf Rydbeck, Magnus Thomasson, Susanne Aalto et al
n Proceedings of "The Neutral ISM in Starburst Galaxies", Marstrand, June 2003, eds. Aalto S., Huettemeister S., Pedlar A., Astronomical Society of the Pacific Conf. Series, San Francisco, p. 152-155
Paper i proceeding
2004

A 4-6 GHz Spectral Scan and 8-10 GHz Observations of the Dark Cloud TMC-1

S.V. Kalenskii, V.I. Slysh, P.F. Goldsmith et al
Astrophys. J.. Vol. 610, p. 329-338
Artikel i vetenskaplig tidskrift
2002

Parameters of warm molecular clouds from methyl acetylene observations

A.V. Alakoz, S.V. Kalenskii, V.G. Promislov et al
Astronomy Reports. Vol. 46 (7), p. 551-556
Artikel i vetenskaplig tidskrift
2001

The detection of new methanol masers in the 5-1-40E Line

S.V. Kalenskii, V.I. Slysh, I.E. Val´tts et al
Astronomy Reports. Vol. 45 (1), p. 26-33
Artikel i vetenskaplig tidskrift
2001

Molecular gas conditions in NGC 4945 and the Circinus galaxy

S.J. Curran, Lars E B Johansson, Per Bergman et al
Astronomy and Astrophysics. Vol. 367, p. 457-469
Artikel i vetenskaplig tidskrift
2000

Determination of molecular gas properties using methyl cyanide lines

S.V. Kalenskii, V.G. Promislov, A.V. Alakoz et al
Astronomy Reports. Vol. 44 (11), p. 725-737
Artikel i vetenskaplig tidskrift
2000

Probing the properties of methyl cyanide sources

S.V. Kalenskii, V.G. Promislov, A.V. Alakoz et al
Astronomy & Astrophysics. Vol. 354, p. 1036-1040
Artikel i vetenskaplig tidskrift
1999

Molecular abundance variations in the Magellanic Clouds

Arto Heikkilä, Lars E B Johansson, H. Olofsson
Astronomy and Astrophysics. Vol. 344, p. 817-847
Artikel i vetenskaplig tidskrift
1998

The C18O/C17O ratio in the Large Magellanic Cloud

Arto Heikkilä, Lars E B Johansson, H. Olofsson
Astronomy and Astrophysics. Vol. 332, p. 493-502
Artikel i vetenskaplig tidskrift
1997

Observation of DCO+ in the Large Magellanic Cloud

Arto Heikkilä, Lars E B Johansson, H. Olofsson
Astronomy and Astrophysics. Vol. 319, p. L21-L24
Artikel i vetenskaplig tidskrift

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