| Records |
| Author |
Chen, P. S. |
| Title |
Infrared properties of barium stars |
Type |
Journal Article |
| Year |
2001 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
372 |
Issue |
1 |
Pages |
245-248 |
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0004-6361 |
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RPLAB @ s @ |
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415 |
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| Author |
Omar, A.; Anantharamaiah, K. R.; Rupen, M.; Rigby, J. |
| Title |
VLA detection of OH absorption from the elliptical galaxy NGC 1052 |
Type |
Journal Article |
| Year |
2002 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
381 |
Issue |
1 |
Pages |
L29-L32 |
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0004-6361 |
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no |
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RPLAB @ s @ |
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435 |
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| Author |
Käufl, H. U.; Rothermal, H.; Drapatz, S. |
| Title |
Investigation of the Martian atmosphere by 10 micron heterodyne spectroscopy |
Type |
Journal Article |
| Year |
1984 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
136 |
Issue |
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Pages |
319-325 |
| Keywords |
astronomical spectroscopy, atmospheric composition, infrared astronomy, mars atmosphere, spectral line width, carbon dioxide concentration, nonequilibrium thermodynamics, optical heterodyning, planetary radiation, mars, atmosphere, spectroscopy, atmosphere, carbon dioxide, altitude, kinetics, rotation, thermal properties, temperature, emissions, intensity, models, data, spectra |
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449 |
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Rothermel, H.; Käufl, H. U.; Schrey, U.; Drapatz, S. |
| Title |
Thermal structure of the Martian mesosphere |
Type |
Journal Article |
| Year |
1988 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
196 |
Issue |
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Pages |
296-300 |
| Keywords |
atmospheric temperature, carbon dioxide, infrared spectroscopy, mars atmosphere, mesosphere, emission spectra, line spectra, spatial resolution, mars, atmosphere, mesosphere, structure, thermal properties, spectra, spectroscopy, earth-based observations, temperature, patterns, infrared, polar regions, wavelengths, equipment, procedure, carbon dioxide, emissions |
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Rothermel1988 |
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450 |
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Johnson, M. A.; Betz, A. L.; McLaren, R. A.; Townes, C. H.; Sutton, E. C. |
| Title |
Nonthermal 10 micron CO2 emission lines in the atmospheres of Mars and Venus |
Type |
Journal Article |
| Year |
1976 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
208 |
Issue |
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Pages |
145 |
| Keywords |
carbon dioxide, emission spectra, infrared spectra, mars atmosphere, nonthermal radiation, optical heterodyning, planetary radiation, venus atmosphere, absorption spectra, energy transfer, line spectra, molecular absorption, molecular collisions, near infrared radiation, solar flux |
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no |
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ref1976ApJ...208L.145J |
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451 |
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| Author |
Kaeufl, H. U.; Rothermel, H.; Drapatz, S. |
| Title |
Indication for H2O in the upper atmosphere of Mars |
Type |
Journal Article |
| Year |
1984 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
141 |
Issue |
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Pages |
430-432 |
| Keywords |
atmospheric moisture, mars atmosphere, upper atmosphere, water vapor, carbon dioxide, emission spectra, nonequilibrium thermodynamics, polar regions |
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no |
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452 |
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| Author |
Rothermel, H.; Käufl, H. U.; Yu, Y. |
| Title |
A heterodyne spectrometer for astronomical measurements at 10 micrometers |
Type |
Journal Article |
| Year |
1983 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
126 |
Issue |
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Pages |
387-392 |
| Keywords |
astronomical spectroscopy, infrared astronomy, infrared spectrometers, optical heterodyning, infrared telescopes, laser spectrometers, mars (planet), venus (planet) |
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no |
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453 |
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| Author |
Soifer, B. T.; Pipher, J. L. |
| Title |
Instrumentation for infrared astronomy |
Type |
Journal Article |
| Year |
1978 |
Publication |
Annual Rev. Astron. Astrophys. |
Abbreviated Journal |
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| Volume |
16 |
Issue |
1 |
Pages |
335-369 |
| Keywords |
infrared applications |
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0066-4146 |
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no |
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492 |
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| Author |
Hansen, Lene; Jørgensen, H.E.; Nørgaard-Nielsen, Hans Ulrik; Pedersen, Kenneth; Goudfrooij, P.; Linden-Vornle, M.J.D. |
| Title |
ISO far-infrared observations of rich galaxy clusters III. Abell 2029, Abell 2052, Abell 2142 |
Type |
Journal Article |
| Year |
2000 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
362 |
Issue |
1 |
Pages |
133-137 |
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| Abstract |
A sample of five rich galaxy clusters has been mapped by ISO at 60 μm, 100 μm, 135 μm, and 200 μm using the PHT-C camera. In previous papers Abell 2670 and Sersic 159-03 were discussed. Here we present the results for Abell 2029, Abell 2052, and Abell 2142. The conclusion of the survey is that the relatively small fields (approximate to 60 square are minutes) are structured with filaments or superpositions of point sources. In some cases point sources (approximate to 0.1 Jy) can be identified with cluster galaxies. An attempt to demonstrate infrared emission from dust in the cooling flows (due to star formation) was inconclusive. |
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no |
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RPLAB @ s @ |
Serial |
456 |
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Justtanont, K.; Decin, L.; Schöier, F. L.; Maercker, M.; Olofsson, H.; Bujarrabal, V.; Marston, A. P.; Teyssier, D.; Alcolea, J.; Cernicharo, J.; Dominik, C.; de Koter, A.; Melnick, G.; Menten, K.; Neufeld, D.; Planesas, P.; Schmidt, M.; Szczerba, R.; Waters, R.; de Graauw, Th.; Whyborn, N.; Finn, T.; Helmich, F.; Siebertz, O.; Schmülling, F.; Ossenkopf, V.; Lai, R. |
| Title |
A HIFI preview of warm molecular gas around χ Cygni: first detection of H2O emission toward an S-type AGB star |
Type |
Journal Article |
| Year |
2010 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
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| Volume |
521 |
Issue |
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Pages |
L6 |
| Keywords |
HEB mixer applications, HIFI, Herschel, stars: AGB and post-AGB / circumstellar matter / stars: kinematics and dynamics / stars: individual: χ Cyg / stars: late-type / stars: mass-loss |
| Abstract |
Aims. A set of new, sensitive, and spectrally resolved, sub-millimeter line observations are used to probe the warm circumstellar gas around the S-type AGB star χ Cyg. The observed lines involve high rotational quantum numbers, which, combined with previously obtained lower-frequency data, make it possible to study in detail the chemical and physical properties of, essentially, the entire circumstellar envelope of χ Cyg.
Methods. The data were obtained using the HIFI instrument aboard Herschel, whose high spectral resolution provides valuable information about the line profiles. Detailed, non-LTE, radiative transfer modelling, including dust radiative transfer coupled with a dynamical model, has been performed to derive the temperature, density, and velocity structure of the circumstellar envelope.
Results. We report the first detection of circumstellar H2O rotational emission lines in an S-star. Using the high-J CO lines to derive the parameters for the circumstellar envelope, we modelled both the ortho- and para-H2O lines. Our modelling results are consistent with the velocity structure expected for a dust-driven wind. The derived total H2O abundance (relative to H2) is (1.1±0.2) × 10-5, much lower than that in O-rich stars. The derived ortho-to-para ratio of 2.1±0.6 is close to the high-temperature equilibrium limit, consistent with H2O being formed in the photosphere. |
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1096 |
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