Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Eric J. Bakker"'
Publikováno v:
The Astronomical Journal. 123:1993-2001
We report on photometry and high-resolution spectroscopy for IRAS 19285+0517. The spectral energy distribution based on visible and near-IR photometry and far-IR fluxes shows that the star is surrounded by dust at a temperature of $T_{\rm {d}}$ $\sim
Publikováno v:
The Astronomical Journal. 119:1325-1338
We discuss an extended feature in the Perseus molecular cloud complex, most prominent in the IRAS database as an almost complete ring of radius 0.75 degrees, but also clearly seen in optical surveys and in radio continuum emission.
Publikováno v:
The Astrophysical Journal. 524:831-848
In this paper, we present an LTE abundance analysis of two new proto-planetary nebulae, IRAS Z02229 + 6208 and IRAS 07430 + 1115, based on high-resolution (R approximately equal 55,000) optical echelle spectra. Results show that both stars are metal-
Publikováno v:
The Astrophysical Journal. 508:380-386
We present-high resolution (R > 200,000), high signal-to-noise spectral data for 51 Pegasi spanning a complete orbital period of the purported planetary companion. A detailed examination of the line bisectors from eight spectral lines as well as the
Autor:
Eric J. Bakker, David L. Lambert
Publikováno v:
The Astrophysical Journal. 508:387-396
We have made the first detection of circumstellar absorption lines of the 12C13C (Phillips) system 1-0 band and the 12C16O first-overtone 2-0 band in the spectrum of the post-AGB star HD56126 (IRAS07134+1005). The rotational temperatures are lower fo
Autor:
Eric J. Bakker
Publikováno v:
Astrophysics and Space Science. 251:73-80
In this paper we discuss the relevance of, and possible scientific gains which can be acquired from studying circumstellar molecular spectra toward evolved stars. Where can we expect circumstellar molecular spectra, why would we want to study these s
Publikováno v:
Astrophysics and Space Science, 224, 335-338. Springer Netherlands
We present a list of post-AGB stars showing molecular line absorption and emission in the optical spectrum. Two objects show CH+, one in emission and one in absorption, and ten stars show C2 and CN in absorption. The Doppler velocities of the C2 line
Autor:
P. Ballester, J. A. de Jong, Johan Pragt, Rainer Köhler, L. Sache, Denis Gillet, Th. Henning, Hannes Bleuler, Rolf Wüthrich, Andreas Glindemann, Ralf Launhardt, Kevin Wagner, Peter Bizenberger, Yves Salvadé, C. Maire, J. Setiawan, R. N. Tubbs, Andreas Quirrenbach, Sabine Reffert, W. Jaffe, Philippe Müllhaupt, L. Weber, Y. Michellod, Francoise Delplancke, D. Sosnowska, O. Scherler, D. Méegevand, R. Dçndliker, H. Hanenburg, M. Fleury, Eric J. Bakker, Richard J. Mathar, Francesco Pepe, R. S. Le Poole, Frederic Derie, K. Murakawa, D. Queloz, Harald Baumeister, D. Segransan, Lars Venema
Publikováno v:
The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation ISBN: 9783540742531
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5650027f83869158b116bdf3b3aa95bb
https://doi.org/10.1007/978-3-540-74256-2_86
https://doi.org/10.1007/978-3-540-74256-2_86
Autor:
Rens Waters, Björn Heijligers, Bill Cotton, Eric J. Bakker, Isabelle Percheron, Luigi D'Arcio, Wilfried Boland, J. Meisner, Roy van Boekel, Andreas Glindemann, Jeroen de Jong, Huub Röttgering, Rudolf S. Le Poole, Dap Hartmann, George K. Miley, Walter Jaffe
Publikováno v:
ESO ASTROPHYSICS SYMPOSIA ISBN: 354043755X
Scientific Drivers for ESO Future VLT/VLTI Instrumentation ISBN: 9783662432174
Scientific Drivers for ESO Future VLT/VLTI Instrumentation ISBN: 9783662432174
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::659a07f24d0f46ff1f8c4ae490c4b44b
https://doi.org/10.1007/10857019_56
https://doi.org/10.1007/10857019_56
Autor:
Bertrand Mennesson, H. J. van Langevelde, S. Ragland, W. D. Cotton, Philip J. Diamond, Eric J. Bakker, Wouter Vlemmings, Wesley A. Traub, S. T. Ridgway, Guy Perrin, G. Chagnon, H. Mc Allister, V. Coudé du Foresto
Publikováno v:
Astronomy and Astrophysics, 456, 339-350. EDP Sciences
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2006, 456, pp.339-350. ⟨10.1051/0004-6361:20065134⟩
Astronomy and Astrophysics
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2006, 456, pp.339-350. ⟨10.1051/0004-6361:20065134⟩
Astronomy and Astrophysics
International audience; We present the results of continued monitoring of the SiO masers at 7 mm wavelength in several of the Mira variable stars reported in Cotton et al. (2004, A&A, 414, 275) (o Ceti = Mira, U Orionis = U Ori, R Aquarii = R Aqr) ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbf5162bf77b970d1106dbcfcd425c08
http://hdl.handle.net/1887/6914
http://hdl.handle.net/1887/6914