GT2318+620 - a Galactic Low-Mass X-Ray Binary or a Radio Loud AGN?

Bibcode
1998tx19.confE.351M
Muhli, P.; Hakala, P. J.; Casares, J.; Shahbaz, T.; Vuori, M.; Charles, P. A.
Bibliographical reference

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.: J. Paul, T. Montmerle, and E. Aubourg (CEA Saclay), meeting abstract.

Advertised on:
12
1998
Number of authors
6
IAC number of authors
1
Citations
0
Refereed citations
0
Description
GT2318+620 is a variable radio source exhibiting a jet-like feature on both sides of an unresolved core (Taylor et al., Nature 351, 1991), and it is possibly associated with an UHURU X-ray source. A red 20th magnitude star coincident with the radio core was identified as the optical counterpart. Based on a neutral hydrogen absorption spectrum and the red color Taylor et al. classified the source as a Galactic low-mass X-ray binary. However, our imaging of GT2318+620 with the Nordic Optical Telescope in subarcsecond seeing conditions uncovered a red (V-I = 2.5) resolved source suggesting that the optical counterpart might be the host galaxy of a radio loud AGN. We present the results of recent optical photometry and spectroscopy as well as infrared photometry of GT2318+620 and discuss their implications on the nature of this source.
Type
Non-refereed

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