Abstract
Over the past 12 years we have been conducting a survey of IRAS (PSC) sources with dust temperatures between 100 and 250 K, which is the temperature of AGB shells after mass loss has ceased. About 1000 PSC sources fulfill this criterion, about half of them identified previously in the literature: most are PNe (49%) and post-AGB stars (27%), but there is also a small fraction of young stellar objects and active galaxies. In order to classify the unidentified sources, we took low resolution spectra of these objects, in the range from 3500 to 9000 Å. The region between 3600 and 5050 Å has been used to carry out the spectral classification of most of the unidentified sources. Partial results are presented here: of the 187 objects studied, 34 were PNe, 10 proto-PNe and 103 post-AGB candidates with or without Hα emission. The rest have been identified as young stellar objects (34), LBVs (2), and active galaxies (3).
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Cohen, M., Barlow 1974, ApJ, 193, 401
Draine, B.T., Lee, H.M. 1984, ApJ 285, 89
García-Lario, P. Manchado, A.; Suso, S.R., Pottasch, S.R.; Oiling, R. 1990, A and AS 82, 497
García-Lario, P., Manchado, A., Pych, W., Pottasch, S.R. 1997, A and AS 126, 497
Gillet, F.C., Low, F.J., Stein, W.A. 1967, ApJ, 149, L97
Hrivnak, B.J., Kwok, S., Volk, K.M. 1989, ApJ 346, 265
Oudmaijer, R. D., van der Veen, W. E. C. J., Waters, L. B. F. M., Trams, N. R., Waelkens, C., Engelsman, E. 1992, A and AS 96, 625
Oudmaijer, R.D. 1996, A and A 306, 823
Manchado, A., Garcia-Lario, P., Esteban, C., Mampaso, A., Pottasch, S. R. 1989, A and A 214, 139
Meixner, M., Ueta, T., Dayal, A., Hora, J. L., Fazio, G., Hrivnak, B.J., Skinner, C. J., Hoffmann, W.F.; Deutsch, L.K. 1999, ApJS 122, 221
Parthasarathy, M., Pottasch, S.R. 1986, A and A 154, L16
Sahai, R. 1999, ApJ 514, L115
Silva, D.R., Cornell, M.E. 1992, ApJS, 81, 865
Scoville, N.Z., Kwan, J. 1976, ApJ 206, 718
Trams, N. R., Waters, L.B.F.M., Lamers, H.J.G.L.M., Waelkens, C., Geballe, T.R., The, P.S. 1991, A and A 87, 361
Ueta, T. Meixner, M., Bobrowsky, M. 2000, ApJ 528, 861
van der Veen, W.E.C.J., Habing, H.J., Geballe, T.R., A and A 1989, 226, 108 Volk, K.M., Kwok, S. 1989, ApJ, 342, 345
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2001 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Manchado, A., Suárez, O., García-Lario, P., Manteiga, M., Pottasch, S.R. (2001). Optical Survey of Post-AGB Candidates. In: Szczerba, R., Górny, S.K. (eds) Post-AGB Objects as a Phase of Stellar Evolution. Astrophysics and Space Science Library, vol 265. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9688-6_3
Download citation
DOI: https://doi.org/10.1007/978-94-015-9688-6_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5758-7
Online ISBN: 978-94-015-9688-6
eBook Packages: Springer Book Archive