Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-25T18:30:55.606Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations of H2O and OH masers in star-forming regions

Published online by Cambridge University Press:  13 January 2020

Georgij Rudnitskij Open the ORCID record for Georgij Rudnitskij [Opens in a new window] ,
Nuriya Ashimbaeva ,
Olga Bayandina ,
Pierre Colom ,
Evgeny Lekht ,
Mikhail Pashchenko ,
Nadezhda Shakhvorostova ,
Alexander Tolmachev  and
Irina Valtts
Georgij Rudnitskij
Affiliation:
Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow, 119234Russia email: [email protected]
Nuriya Ashimbaeva
Affiliation:
Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow, 119234Russia email: [email protected]
Olga Bayandina
Affiliation:
Astrospace Center, Lebedev Institute of Physics, Russian Academy of Sciences, Moscow, 117997Russia
Pierre Colom
Affiliation:
LESIA, Observatoire de Paris-Meudon, Meudon, 92195France
Evgeny Lekht
Affiliation:
Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow, 119234Russia email: [email protected]
Mikhail Pashchenko
Affiliation:
Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow, 119234Russia email: [email protected]
Nadezhda Shakhvorostova
Affiliation:
Astrospace Center, Lebedev Institute of Physics, Russian Academy of Sciences, Moscow, 117997Russia
Alexander Tolmachev
Affiliation:
Pushchino Radio Astronomy Observatory, Astrospace Center, Lebedev Institute of Physics, Russian Academy of Sciences, Pushchino, 142290Russia
Irina Valtts
Affiliation:
Astrospace Center, Lebedev Institute of Physics, Russian Academy of Sciences, Moscow, 117997Russia
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We report long-term observations of H2O and OH maser emission sources at wavelengths of 1.35 and 18 cm associated with star-forming regions. Strong quasi-periodic flares of maser emission have been observed. Several sources (in particular, G25.65+1.05, IRAS 16293−2422, Cep A) have displayed strong flares in the H2O line, when their peak flux density raised by a few orders of magnitude above the quiet state. Possible causes of this are discussed.

Keywords

stars: formationstars: planetary systems: protoplanetary disksradio lines: stars.
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 330 - 332
Copyright
© International Astronomical Union 2020 

References

Colom, P., Lekht, E. E., Pashchenko, M. I., Rudnitskii, G. M., & Tolmachev, A. M. 2018, Astron. Rep., 62, 440 CrossRefGoogle Scholar
Girart, J. M., Estalella, R., Palau, A., Torrelles, J. M. & Rao, R. 2014, ApJ, 780, L11 CrossRefGoogle Scholar
Kurtz, S. & RadioAstron Team 2018, poster presented at COSPAR 2018, Pasadena, California, USAGoogle Scholar
Shakhvorostova, N. N., Vol’vach, L. N., Vol’vach, A. E., Dmitrotsa, A. I., Bayandina, O. S., Val’tts, I. E., Alakoz, A. V., Ashimbaeva, N. T. & Rudnitskii, G. M. 2018, Astron. Rep., 62, 584 CrossRefGoogle Scholar
Volvach, L. N., Volvach, A. E., Larionov, M. G., MacLeod, G. C., van den Heever, S. P., Wolak, P., & Olech, M. 2018, MNRAS, 482, L90 CrossRefGoogle Scholar