NGC4698: a SEYFERT-2 Galaxy with no Obscuring Column

Details NGC4698: a SEYFERT-2 Galaxy with no Obscuring Column NGC4698: a SEYFERT-2 Galaxy with no Obscuring Column

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..925g&link_type=abstract

Chandra Proposal ID #03700246

Computer Science

Chandra Proposal Id #03700246

Scientific paper

We propose to observe NGC4698 one of the brightest Seyfert-2s in the spectroscopic sample of galaxies. NGC4698, despite its unambiguous optical classification, presents no obscuring column in the ASCA X-ray spectra. The possibility that this is a Compton thick object is ruled out by both the absence of a strong FeK line and the large value of the fx/f[OIII] ratio. A few Seyfert-2 galaxies with similar properties have been discovered and they may represent the prototypes of a new class of Seyfert-2s which challenges the standard AGN unification schemes. Chandra spatially resolved spectroscopy and timing analysis will help constraining the nature of the X-ray emission in this object.

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