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NIR Spectroscopy of IRAS 16115-5044

Published online by Cambridge University Press:  26 May 2016

David T.F. Weldrake ,
Peter R. Wood  and
Griet C. Van de Steene
David T.F. Weldrake
Affiliation:
Research School of Astronomy & Astrophysics, Australian National University
Peter R. Wood
Affiliation:
Research School of Astronomy & Astrophysics, Australian National University
Griet C. Van de Steene
Affiliation:
Royal Observatory of Belgium

Extract

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IRAS 16115-5044 has been identified as a possible post-AGB star on the basis of its position in the IRAS 2-colour diagram (van der Veen et al. 1989). A study by Van de Steene and Pottasch (1993) failed to detect any radio-continuum flux from the object, suggesting it is still in the pre-planetary nebula phase, that is, the central star is not yet hot enough to ionize the circumstellar shell.

The central star is bright in the infrared (K=4.9) but faint in the visible which we attribute to an optically thick circumstellar shell (J-K=2.61, van der Veen et al. 1989). Oudmaijer et al. (1995) obtained a K-band spectrum of lRAS 16115-5044 longward of 2.2 microns, and did not detect any discernable features.

Type
Part III: Planetary Nebulae in the Scheme of Stellar Evolution
Information
Symposium - International Astronomical Union , Volume 209: Planetary Nebulae: Their Evolution and Role in the Universe , 2003 , pp. 129 - 130
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Oudmaijer, R.D., Waters, L.B.F.M., van der Veen, W.E.C.J., Geballe, T.R., 1995, A&A 299, 69 Google Scholar
van der Veen, W.E.C.J., Habing, H.J., Geballe, T.R., 1989, A&A 226, 108 Google Scholar
Van de Steene, G.C., Pottasch, S.R., 1993, A&A 274, 895 Google Scholar