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pro vyhledávání: '"T. Lloyd Evans"'
Autor:
T. Lloyd Evans
Publikováno v:
Journal of Astrophysics and Astronomy. 31:177-211
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae2519986243f5190deb8ac7dbafea03
https://doi.org/10.1007/s12036-010-0017-6
https://doi.org/10.1007/s12036-010-0017-6
Akademický článek
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Autor:
T. Lloyd Evans, H. Van Winckel
Publikováno v:
Proceedings of the International Astronomical Union. 2:682-685
Optical photometry and radial velocities have been obtained for stars whose near- and mid-infrared colours suggest that they have dusty circumstellar discs; many are RV Tauri variables. A subset of six stars have earlier spectral types and smaller li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79c4e38c32dc89858520ee60cdcecb41
https://doi.org/10.1017/s1743921307006308
https://doi.org/10.1017/s1743921307006308
Publikováno v:
Astronomy & Astrophysics, 448(2), 641-653. EDP Sciences
Aims: We aim at showing that the broad-band SED characteristics of our sample of post-AGB stars are best interpreted, assuming the circumstellar dust is stored in Keplerian rotating passive discs. Methods: We present a homogeneous and systematic stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c753530e80d461e5dda9d6922b6929d0
https://doi.org/10.1051/0004-6361:20054062
https://doi.org/10.1051/0004-6361:20054062
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 346:153-162
IRAS 08182-6000 has very red infrared colours, with an excess at K and L, and a silicate absorption feature at 9.7 μm. Optical spectra show strong, narrow absorption bands of TiO and AlO and weaker bands of VO that are indicative of formation in a v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98210b9e268b583b8b3384563a4e9abe
https://doi.org/10.1046/j.1365-2966.2003.07073.x
https://doi.org/10.1046/j.1365-2966.2003.07073.x
Autor:
T. Lloyd Evans, Ian S. Glass
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 343:67-74
Improved light curves extracted from the MACHO data base are used to discuss the periods and amplitudes of the calibrating stars of the Mira P-L relations. Previously unpublished spectral types and positions are given forseveral of those that lie in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7937a51b88bc6fc82e5030985623b03
https://doi.org/10.1046/j.1365-8711.2003.06632.x
https://doi.org/10.1046/j.1365-8711.2003.06632.x
Autor:
T. Maas, L.-Å. Nyman, F. van Wyk, T. Lloyd Evans, H. Van Winckel, P. Martinez, Fred Marang, David Kilkenny
Publikováno v:
Astronomy & Astrophysics. 405:271-283
We present an analysis of our extensive data-set on IRAS 08544-4431. It is the first object we discuss of our newly defined sample of stars, selected for their position in the 'RV Tauri' box in the IRAS [12]-[25], [25]-[60] two-color diagram. Moreove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a3467903c33b0c331f675dd9c33e72
https://doi.org/10.1051/0004-6361:20030613
https://doi.org/10.1051/0004-6361:20030613
Autor:
T. Lloyd Evans, Geoffrey C. Clayton, D. Hammond, Janet A. Mattei, Arlo U. Landolt, J. Lawless, David Kilkenny
Publikováno v:
Publications of the Astronomical Society of the Pacific. 114:846-850
ES Aql, initially classified as a semiregular variable, is now believed to be a member of the R Coronae Borealis (RCB) class of stars, a small group of carbon-rich supergiants that undergo dramatic declines in brightness at irregular intervals. We pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73c0c849366cc8110b59a058d60292ff
https://doi.org/10.1086/341716
https://doi.org/10.1086/341716
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 319:103-110
resolution between 4100 and 5500 A ˚ . A full description of the assignments and spectral features in the stars is given. The spectra are characterized by absorption from the ground vibrational level (0, 0, 0) and from higher-lying vibrational level
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b3c11e11ab188b5371c8494a5c55e8c
https://doi.org/10.1046/j.1365-8711.2000.03818.x
https://doi.org/10.1046/j.1365-8711.2000.03818.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 319:111-120
The optical spectrum of the carbon star IRAS 12311−3509 is dominated by the Merrill–Sanford emission bands of SiC2, by absorption and emission in the Swan system of C2, and by resonance emission lines of neutral metals. The infrared energy distri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e7eaf3a807cc4e6820541ac785f79f6
https://doi.org/10.1046/j.1365-8711.2000.03819.x
https://doi.org/10.1046/j.1365-8711.2000.03819.x