J/ApJS/187/149 StarCAT: STIS UV echelle spectra of stars (Ayres, 2010)
StarCAT: a catalog of space telescope imaging spectrograph ultraviolet echelle
spectra of stars.
Ayres T.R.
<Astrophys. J. Suppl. Ser., 187, 149-171 (2010)>
=2010ApJS..187..149A 2010ApJS..187..149A
ADC_Keywords: Spectra, ultraviolet ; Cross identifications ; Photometry, UBV ;
Spectral types ; Parallaxes, spectroscopic
Keywords: catalogs - instrumentation: spectrographs - methods: data analysis -
stars: general - ultraviolet: stars
Abstract:
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 5.2Ms. For many of
the objects, broad ultraviolet coverage has been achieved by splicing
echellegrams taken in two or more FUV (1150-1700Å) and/or NUV
(1600-3100Å) 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 300m/s
internal velocity precision; absolute accuracy at the 1km/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.
Description:
StarCAT is a Cycle 14 Legacy Archival project supported by the Guest
Investigator program of Hubble Space Telescope (HST). The objective of
StarCAT was to create an easily accessible catalog of high resolution
spectral observations of targets broadly identified as "stars,"
collected by Space Telescope Imaging Spectrograph (STIS) from the time
of its installation in 1997, during Hubble Servicing Mission 2, to its
shutdown in 2004 August. StarCAT is available through an interface
maintained at the Multimission Archive at Space Telescope (MAST):
http://archive.stsci.edu/prepds/starcat
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 144 544 The StarCAT sample: star names
table2.dat 48 534 The StarCAT sample: stellar properties
starcat.dat 178 544 Merged StarCAT sample: names and properties
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See also:
III/39 : UV Bright Star Spectrophotometric Catalog (Jamar+, 1976)
III/235 : Spectroscopically Identified White Dwarfs (McCook+, 2008)
J/AJ/119/486 : HDF-S: STIS imaging (Gardner+, 2000)
http://archive.stsci.edu/prepds/starcat : StarCAT home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- StarCAT StarCat name
16- 23 A8 --- m_StarCAT Sub-division (1)
25- 32 F8.3 deg RAdeg Right Ascension in decimal degrees (J2000)
34- 40 F7.3 deg DEdeg Declination in decimal degrees (J2000)
42- 68 A27 --- SIMBAD Simbad name
70- 89 A20 --- HST HST name
91-144 A54 --- Notes Notes
--------------------------------------------------------------------------------
Note (1): Sub-division as POS-BP, POS-CEN, POS-D, POS-ECH1, POS-ECH2,
POS-N, POS-NE, POS-OFFS, POS-S, POS-SW or SCAN.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- StarCAT StarCAT name
16- 18 A3 --- OType Simbad object type
20- 27 A8 --- SpType Simbad spectral type
29- 34 F6.3 arcsec plx ? Simbad parallax
36- 41 F6.2 mag Vmag ? Simbad V band magnitude
43- 48 F6.2 mag B-V ? Simbad (B-V) color index
--------------------------------------------------------------------------------
Byte-by-byte Description of file: starcat.dat
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
1- 14 A14 --- StarCAT StarCat name
16- 23 A8 --- m_StarCAT Sub-division (1)
25- 32 F8.3 deg RAdeg Right Ascension in decimal degrees (J2000)
34- 40 F7.3 deg DEdeg Declination in decimal degrees (J2000)
42- 68 A27 --- SIMBAD Simbad name
70- 89 A20 --- HST HST name
91- 93 A3 --- OType Simbad object type
95-102 A8 --- SpType Simbad spectral type
104-109 F6.3 arcsec plx ? Simbad parallax
111-116 F6.2 mag Vmag ? Simbad V band magnitude
118-123 F6.2 mag B-V ? Simbad (B-V) color index
125-178 A54 --- Notes Notes
--------------------------------------------------------------------------------
Note (1): Sub-division as POS-BP, POS-CEN, POS-D, POS-ECH1, POS-ECH2,
POS-N, POS-NE, POS-OFFS, POS-S, POS-SW or SCAN.
--------------------------------------------------------------------------------
History:
* 30-Apr-2010: From electronic version of the journal
* 16-Apr-2014: corrcted SIMBAD name from HD 32008B into HD 31984
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 30-Apr-2010