Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Douglas C. B. Whittet"'
Autor:
Patrick F. Roche, Alex Lazarian, Antonio Chrysostomou, David K. Aitken, Douglas C. B. Whittet, J. H. Hough
Publikováno v:
Scopus-Elsevier
We present linear spectropolarimetry in the wavelength range 4.5-4.8 μm of the embedded infrared source W33A. Our observations show for the first time the presence of polarization associated with the CO and XCN ice features, demonstrating that the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::935227061b19243ebeec028807093373
https://ora.ox.ac.uk/objects/uuid:19fc2316-9d9e-41f2-8425-911a26a1d319
https://ora.ox.ac.uk/objects/uuid:19fc2316-9d9e-41f2-8425-911a26a1d319
Autor:
Craig Smith, Patrick F. Roche, Andy Adamson, Robert G. Smith, T. H. Kerr, Christopher M. Wright, David K. Aitken, Douglas C. B. Whittet, Jean Chiar
Publikováno v:
Scopus-Elsevier
We present observations of solid-state absorption features due to water ice, CO ice, and silicate dust in the spectrum of the bright infrared source (1RS 1) associated with the Herbig-Haro nebula HH 100 in the R Coronae Australis dark cloud. These ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d74015385d2fc9f136753897d7b14e9
https://ora.ox.ac.uk/objects/uuid:6eb8694d-2913-4f60-8c74-d3ccccba88ed
https://ora.ox.ac.uk/objects/uuid:6eb8694d-2913-4f60-8c74-d3ccccba88ed
We investigate the composition of interstellar grains along the line of sight toward Zeta Ophiuchi, a well-studied environment near the diffuse-dense cloud transition. A spectral decomposition analysis of the solid-state absorbers is performed using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c3b595bfc6043cdb6675f2125748f72
Freeze-out of the gas phase elements onto cold grains in dense interstellar and circumstellar media builds up ice mantles consisting of molecules that are mostly formed in situ (H2O, NH3, CO2, CO, CH3OH, and more). This review summarizes the detected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f2f8c3154d7c07f485906e20018192b
Autor:
J. H. Hough, P. W. Lucas, Andy Adamson, M. Buschermöhle, Douglas C. B. Whittet, M. J. Wolff, Antonio Chrysostomou, Barbara A. Whitney
Publikováno v:
The Astrophysical Journal. 624:821-826
We present new observations of circular polarization (CP) at 2.2 � m in the Orion (OMC-1) molecular cloud. Our resultsextendapreviouslypublishedstudyoftheregion.WeshowthatthedegreeofCPcorrelatesspatiallywiththe molecularcloudandappearstobegenerally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ca2178ad28c25658401b80c42a50f70
https://doi.org/10.1086/429244
https://doi.org/10.1086/429244
Publikováno v:
The Astrophysical Journal Supplement Series. 151:35-73
We present 2.5-30 mum spectra from the Short-Wavelength Spectrometer of the Infrared Space Observatory for a total of 23 sources. The sources include embedded young stellar objects spanning a wide range of mass and luminosity, together with field sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c68fc346b2b827e512093d75e28cc466
https://doi.org/10.1086/381182
https://doi.org/10.1086/381182
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 330:837-843
ABSTRA C T To better understand the conditions under which ice mantles form on grains in molecular clouds, three globules in the Southern Coalsack have been searched for the presence of H2O ice. Given the total lack of star formation in the Coalsack,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fe2ea46d916299a2e9bed674b33ccbd
https://doi.org/10.1046/j.1365-8711.2002.05124.x
https://doi.org/10.1046/j.1365-8711.2002.05124.x
Publikováno v:
The Astrophysical Journal. 547:872-884
Observations of interstellar linear polarization in the spectral range 0.35-2.2??m are presented for several stars reddened by dust in the Taurus region. Combined with a previously published study by Whittet et al., these results represent the most c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53a7c730175932713ff7fb812854ccf7
https://doi.org/10.1086/318421
https://doi.org/10.1086/318421
Autor:
E. F. van Dishoeck, Erika L. Gibb, Jacqueline V. Keane, Jean Chiar, Adwin Boogert, O. Kerkhof, Perry A. Gerakines, Pascale Ehrenfreund, Douglas C. B. Whittet, Alexander G. G. M. Tielens, W. A. Schutte
Publikováno v:
Astrophys. J.
This paper presents, for the —rst time, a complete 2.4¨25 km spectrum of the dust-embedded young stellar object W33A. The spectrum was obtained with the Short Wavelength Spectrometer of the Infrared Space Observatory at a mean resolving power of D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6df9f212a84010508f270f3ab7b881b
https://doi.org/10.1086/308940
https://doi.org/10.1086/308940