[vsnet-chat 3583] IRAS PSC and FSC

[Taichi Kato <tkato>]

IRAS PSC and FSC

Re: [vsnet-chat 3575] re NSV 12041

> As for the IRAS PSC and FSC positions discussed by both Taicho Kato and
> Brian Skiff, I note that the brighter star that is possibly associated
> with the FSC position has a Tycho1 BT-VT colour index of around +1.9,
> which seems reasonably red for an FSC object.
> 
> So, the PSC source could well be for the faint star (especially given
> the proximity to the 2MASS position), and the FSC one for the bright
> star.

   As is well known, IRAS PSC and FSC are not exclusive, as (probably)
in RXS.  Both PSC and FSC can refer to the same object in spite of
different cataloged positions.  I have encountered many of such examples,
but just list one.

235008.5 -141741 (2000.0) IRAS23475-1434 0.756 0.484L 0.400L 1.399L -1%
235008.5 -141741 (2000.0) SSC23475-1434 0.756 0.484L 0.400L 1.399L

235006.0 -141755 (2000.0) FSC23475-1434 0.779 0.276 0.174L 0.404L

   In such cases, IRAS FSC are often given improvements in fluxes and
position.

Regards,
Taichi Kato

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