Detection of solid ammonia, methanol, and methane with ISOPHOT

J. Gürtler, U. Klaas, Th Henning, P. Ábrahám, D. Lemke, K. Schreyer, K. Lehmann

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We report on a search for the NH3 inversion band at 9.0 μm, the CH4 band at 7.7 μm, and the CH3OH band at 9.7 μm in the spectra of 10 heavily obscured stellar objects taken with the spectrophotometer ISOPHOT-S aboard the Infrared Space Observatory (ISO). Four of them indications of the NH3 inversion band at 9.0 μm superimposed on the always strong silicate band. The results show that ammonia ice may be abundant in some cool and dense molecular circumstellar regions. The 9.7 μm band of solid CH3OH was detected in 5 of the sources, and also the 7.7 μm band of solid CH4 was found in 5 sources. The PHT-S detections were cross-checked against ISO-SWS spectra from archive data. Considering the different beam sizes (24 × 24 □″ versus 14 × 20 □″), there is good agreement.

Original languageEnglish
Pages (from-to)1075-1087
Number of pages13
JournalAstronomy and Astrophysics
Volume390
Issue number3
Publication statusPublished - Aug 2002

Fingerprint

methanol
ammonia
methane
methyl alcohol
observatory
silicate
Infrared Space Observatory (ISO)
ice
inversions
spectrophotometers
detection
inversion
silicates
indication

Keywords

  • Infrared: ISM
  • ISM: dust, extinction
  • ISM: lines and bands
  • ISM: molecules
  • Stars: circumstellar matter

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Gürtler, J., Klaas, U., Henning, T., Ábrahám, P., Lemke, D., Schreyer, K., & Lehmann, K. (2002). Detection of solid ammonia, methanol, and methane with ISOPHOT. Astronomy and Astrophysics, 390(3), 1075-1087.

Detection of solid ammonia, methanol, and methane with ISOPHOT. / Gürtler, J.; Klaas, U.; Henning, Th; Ábrahám, P.; Lemke, D.; Schreyer, K.; Lehmann, K.

In: Astronomy and Astrophysics, Vol. 390, No. 3, 08.2002, p. 1075-1087.

Research output: Contribution to journalArticle

Gürtler, J, Klaas, U, Henning, T, Ábrahám, P, Lemke, D, Schreyer, K & Lehmann, K 2002, 'Detection of solid ammonia, methanol, and methane with ISOPHOT', Astronomy and Astrophysics, vol. 390, no. 3, pp. 1075-1087.
Gürtler J, Klaas U, Henning T, Ábrahám P, Lemke D, Schreyer K et al. Detection of solid ammonia, methanol, and methane with ISOPHOT. Astronomy and Astrophysics. 2002 Aug;390(3):1075-1087.
Gürtler, J. ; Klaas, U. ; Henning, Th ; Ábrahám, P. ; Lemke, D. ; Schreyer, K. ; Lehmann, K. / Detection of solid ammonia, methanol, and methane with ISOPHOT. In: Astronomy and Astrophysics. 2002 ; Vol. 390, No. 3. pp. 1075-1087.
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