SIMBAD references

2010ApJS..187..149A - Astrophys. J., Suppl. Ser., 187, 149-171 (2010/March-0)

StarCAT: a catalog of space telescope imaging spectrograph ultraviolet echelle spectra of stars.


Abstract (from CDS):

StarCAT is a catalog of high resolution ultraviolet spectra of objects classified as "stars," recorded by Space Telescope Imaging Spectrograph (STIS) during its initial seven years of operations (1997-2004). StarCAT is based on 3184 echelle observations of 545 distinct targets, with a total exposure duration of 5.2 Ms. For many of the objects, broad ultraviolet coverage has been achieved by splicing echellegrams taken in two or more FUV (1150-1700 Å) and/or NUV (1600-3100 Å) settings. In cases of multiple pointings on conspicuously variable sources, spectra were separated into independent epochs. Otherwise, different epochs were combined to enhance the signal-to-noise ratio (S/N). A post-facto correction to the {calstis} pipeline data sets compensated for subtle wavelength distortions identified in a previous study of the STIS calibration lamps. An internal "fluxing" procedure yielded coherent spectral energy distributions (SEDs) for objects with broadly overlapping wavelength coverage. The best StarCAT material achieves 300 m/s internal velocity precision; absolute accuracy at the 1 km/s level; photometric accuracy of order 4%; and relative flux precision several times better (limited mainly by knowledge of SEDs of UV standard stars). While StarCAT represents a milestone in the large-scale post-processing of STIS echellegrams, a number of potential improvements in the underlying "final" pipeline are identified.

Abstract Copyright:

Journal keyword(s): catalogs - instrumentation: spectrographs - methods: data analysis - stars: general - ultraviolet: stars

VizieR on-line data: <Available at CDS (J/ApJS/187/149): table1.dat table2.dat starcat.dat>

Simbad objects: 535

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