Stellar Winds and Interstellar Medium
Masers & (Post-)AGB stars

Hamburger Sternwarte - Research

Water vapor masers in long-period variable stars


Refereed papers

Winnberg A., Brand J., Engels D., Baldacci L., Walmsley C.M., 2008, Water vapour masers in long-period variable stars, I. RX Boo And SV Peg,
A&A 482, 831
Engels D., Winnberg A., Walmsley C.M, Brand J., 1997, Mode switching of the water maser in OH 39.7+1.5,
A&A 322, 291

Conference Proceedings

Brand J., Engels D., Winnberg A., 2018, Variability of water masers in evolved stars on timescales of decades,
In: Astrophysical Masers: Unlocking the Mysteries of the Universe, Proceedings of the IAU Symposium 336, Cagliari, Italy, September 4-8, 2017, Eds. A. Tarchi, M.J. Reid and P. Castangia, p. 393-394
Winnberg A., Brand J., Engels D., 2011, Water Vapour Masers in the Mira Variable U Herculis,
In: Why Galaxies Care About AGB stars II., Conference, Vienna, Austria, August 16-20, 2010, Eds. F. Kerschbaum, T. Lebzelter, and R.F. Wing, ASPC 445, p. 375
Engels D., Winnberg A., Brand J., Jimenez-Esteban F., 2008, Variations of masers in circumstellar shells on the timescale of decades,
In: Astrophysical Masers and Their Environments, IAU Symposium 242, Alice Springs, Australia, Mar 12-16, 2007, Eds. J. Chapman, W. Baan, Cambridge University Press, p. 318-319
Brand J., Baldacci L., Engels D. , 2002, Single-dish monitoring of circumstellar water masers,
In: SRT: The Impact of Large Antennas on Radioastronomy and Space Science, Workshop, Cagliari, Italy, Nov 7-10, 2001, Societa Italiana di Fisica, Conference Proceedings Vol. 81, Eds. N. D'Amico, F. Fusi Pecci, I. Porceddu and G. Tofani, p. 99-105
Brand J., Engels D., Baldacci L., 2002, A study of the H2O maser emission from R Cas ,
In: Cosmic Masers: From Proto-Stars to Black Holes, IAU Symposium 206, Angra dos Reis, Brazil, Mar 5-10, 2001, Eds. V. Migenes, M. Reid, Astronomical Society of the Pacific, p.310
Engels D., Winnberg, A., Brand J., Walmsley C.M., 1999, Variability of 22 GHz H2O masers in circumstellar shells,
In: Asymptotic Giant Branch Stars, IAU Symposium 191, Montpellier 1998, Eds. T. Le Bertre, A. Lebre, and C. Waelkens, p. 373
Engels D., Winnberg, A., Brand J., Walmsley C.M., 1993, The 22 GHz water maser of RX Bootis,
In: Astrophysical masers; Proceedings of the Conference, Arlington, VA, Mar. 9-11, 1992, p. 403-406

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