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Optical and IR Observations of Aql X-1

  • Michael R. Garcia (a1) and Paul J. Callanan (a1)

Abstract

We have obtained optical spectra and IR photometry in an attempt to determine the orbital parameters of the Aql X-1 system. Spectra from the MMT in October 1995 appear to detect the secondary, but are not sufficient to measure the mass function. IR photometry in and out of mini-outburst find K ~ 15.4, and may indicate that the disk contributionat K is modest during the mini-outburst.

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References

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Chevalier, C. and Ilovaisky, S.A. 1991 A&A 251, Lll
Garcia, M.R., Callanan, P.J, Zhao, P., McClintock, J.E., 1996, in ‘Cataclysmic Variables and Related Objects’, ed Evans, and Wood, , Kluwer.
Martin, AL, Rebolo, R., Casares, J, and Charles, P.A. 1992, Nature, 358 129.
Thorstensen, J, Charles, P, and Bowyer, S, 1978 ApJ 220, L131.
van Paradijs, J., 1996 in “X-ray Binaries”, ed. Lewin, , van, Paradijs, and van den, Heuvel, CUP.
Johnson, HL, 1966 Ann. Rev. Ap. 4, 193.

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Optical and IR Observations of Aql X-1

  • Michael R. Garcia (a1) and Paul J. Callanan (a1)

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