Výsledky vyhledávání - "Whittet, DCB"

ISO-SWS observations of interstellar solid (CO2)-C-13: heated ice and the Galactic C-12/C-13 abundance ratio

Autor: Boogert, ACA, Ehrenfreund, P, Gerakines, PA, Tielens, AGGM, Whittet, DCB, Schutte, WA, van Dishoeck, EF, de Graauw, T, Decin, L, Prusti, T

Publikováno v: Astronomy & astrophysics, 353(1), 349-362. EDP Sciences

We present observations of the stretching mode of (CO2)-C-13 ice along 13 lines of sight in the Galaxy, using the Short Wavelength Spectrometer on board of the Infrared Space Observatory (ISO-SWS). Remarkable variations are seen in the absorption ban

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::1d41801fc25284ef300e05f081ab08f3
https://research.rug.nl/en/publications/a86fecd1-df13-45cb-8c30-c68333d2c487

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Infrared Space Observatory with the observations of solid carbon dioxide in molecular clouds

Autor: Gerakines, PA, Whittet, DCB, Ehrenfreund, P, Boogert, ACA, Tielens, AGGM, Schutte, WA, Chiar, JE, van Dishoeck, EF, Prusti, T, Helmich, FP, de Graauw, T

Publikováno v: Astrophysical Journal, 522(1), 357-377. IOP PUBLISHING LTD

Spectra of interstellar CO2 ice absorption features at a resolving power of lambda/Delta lambda approximate to 1500-2000 are presented for 14 lines of sight. The observations were made with the Short-Wavelength Spectrometer (SWS) of the Infrared Spac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::aa505f44bc67495312bd25271106a7a5
https://research.rug.nl/en/publications/ba78d929-a623-49b6-9459-d4cb1cbff1f3

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Weak ice absorption features at 7.24 and 7.41 mu m in the spectrum of the obscured young stellar object W 33A

Autor: Schutte, WA, Boogert, ACA, Tielens, AGGM, Whittet, DCB, Gerakines, PA, Chiar, JE, Ehrenfreund, P, Greenberg, JM, van Dishoeck, EF, de Graauw, T

Publikováno v: Astronomy & astrophysics, 343(3), 966-976. EDP Sciences

ISO-SWS observations of the highly obscured young stellar object W 33A reveal two broad absorption features centered at 7.24 and 7.41 mu m. Comparison to interstellar ice analogs shows that the 7.24 mu m band can be well matched by the CH deformation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::4e021eb3d94ff7a0ae77170bc11918c8
https://research.rug.nl/en/publications/ab34e193-2399-4a39-b565-12c85129fbc3

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Ice absorption features in the 5-8 mu m range

Autor: Keane, JV, Tielens, AGGM, Boogert, ACA, Whittet, DCB, Cox, P, Kessler, MF

Publikováno v: UNIVERSE AS SEEN BY ISO, VOLS I AND II, 683-685
STARTPAGE=683;ENDPAGE=685;TITLE=UNIVERSE AS SEEN BY ISO, VOLS I AND II

ISO-SWS spectra (2 - 45 mu m) have been obtained towards a large number of luminous young stellar objects. Here, we present a study of absorption features towards the two objects NGC: 7538:IRS9 and Mon R2:IRS3, for the spectral region 5 - 8 mu m. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::7757cfec93a9e76b43a2e3795d33d72a
https://research.rug.nl/en/publications/e2de8009-0134-44d6-abb3-56b6ad1c7035

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Laboratory studies of thermally processed H2O-CH3OH-CO2 ice mixtures and their astrophysical implications

Autor: Ehrenfreund, P, Kerkhof, O, Schutte, WA, Boogert, ACA, Gerakines, PA, Dartois, E, d'Hendecourt, L, Tielens, AGGM, van Dishoeck, EF, Whittet, DCB

Publikováno v: Astron. Ap., 350, 240-253
Astronomy & astrophysics, 350(1), 240-253. EDP Sciences

Data of the Infrared Space Observatory ISO have strongly influenced the current view of interstellar ice chemistry. ISO and ground-based results have confirmed that the most abundant ice species in warm regions close to massive protostars are H2O, CO

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c4737b8b521df6c8e7cba17893759540
http://hdl.handle.net/1887/2286

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Processing of ICY mantles in protostellar envelopes

Autor: Chiar, JE, Gerakines, PA, Whittet, DCB, Pendleton, YJ, Tielens, AGGM, Adamson, AJ, Boogert, ACA

Publikováno v: Astrophysical Journal, 498(2), 716-727. IOP PUBLISHING LTD

We have obtained CO absorption profiles of several young stellar objects (YSOs), spanning a range of mass and luminosity, in order to investigate their ice mantle composition. We present the first detection of CO toward the class I YSO L1489 IRS in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::83b4a672f5ade54aac211e054bff7e49
https://research.rug.nl/en/publications/c9fbcf18-9938-42cd-923a-983c910ab309

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ISO-SWS observations of weak bands of trace components of ices towards the young stellar object W 33A

Autor: Schutte, WA, Greenberg, JM, Van Dishoeck, EF, Tielens, AGGM, Boogert, ACA, Whittet, DCB

Publikováno v: Astrophysics and Space Science, 255(1-2), 61-66

ISO-SWS observations of the highly obscured young stellar object W 33A reveal two broad absorption features centered at 7.24 and 7.40 mu m The position and width of these features indicates that they are due to the XH bending mode (X= C, N, or O) of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::e7ab077f30a51ed8a964e05b0cb9c38f
https://research.rug.nl/en/publications/37652332-1bed-4f98-9f9f-63a55796d6e2

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Infrared spectroscopy of dust in the diffuse interstellar medium toward Cygnus OB2 No. 12

Autor: Whittet, DCB, Boogert, ACA, Gerakines, PA, Schutte, W, Tielens, AGGM, deGraauw, T, Prusti, T, vanDishoeck, EF, Wesselius, PR, Wright, CM

Publikováno v: Astrophysical Journal, 490(2), 729-734. IOP PUBLISHING LTD

Observations made with the short-wavelength spectrometer of the Infrared Space Observatory are used to investigate the composition of interstellar dust in the line of sight to Cygnus OB2 No. 12, commonly taken as representative of the diffuse (low-de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::9894e25ef9eb23b2a0ad01449ec7685c
https://research.rug.nl/en/publications/6782fc87-dbd7-458d-8cc9-0938aaa1dc19

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Solid methane toward deeply embedded protostars

Autor: Boogert, ACA, Schutte, WA, Tielens, AGGM, Whittet, DCB, Helmich, FP, Ehrenfreund, P, Wesselius, PR, de Graauw, T, Prusti, T

Publikováno v: Astronomy & astrophysics, 315(2), L377-L380. EDP Sciences

We report on the detection of an absorption feature near 7.67 mu m toward the deeply embedded protostellar objects W 33A and NGC 7538 : IRS9. Comparison with laboratory spectra shows that this feature can be identified as the v(4) ('deformation') mod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::4cf7d303d30b272d4c5671e5d9677854
https://research.rug.nl/en/publications/228e6536-2d33-4519-9184-9cb184973cda

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A STUDY OF THE CHAMELEON-I DARK CLOUD AND T-ASSOCIATION .6. INTERSTELLAR POLARIZATION, GRAIN ALIGNMENT AND MAGNETIC-FIELD

Autor: WHITTET, DCB, GERAKINES, PA, CARKNER, AL, HOUGH, JH, MARTIN, PG, PRUSTI, T, KILKENNY, D

Publikováno v: Monthly Notices of the Royal Astronomical Society, 268(1), 1-12. Oxford University Press

We present new measurements of optical and near-infrared linear polarization towards 39 field stars reddened by dust in the Chamaeleon I dark cloud. New and previously published data are combined in a detailed investigation of the wavelength dependen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::b06ece6f51078791a3556feb76b86080
https://research.rug.nl/en/publications/93073b39-83f2-4a07-a043-4216e3d909bd

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