J/ApJS/176/276 PTI calibrator catalog (van Belle+, 2008)
The Palomar Testbed Interferometer calibrator catalog.
van Belle G.T., van Belle G., Creech-Eakman M.J., Coyne J., Boden A.F.,
Akeson R.L., Ciardi D.R., Rykoski K.M., Thompson R.R., Lane B.F.,
(the PTI Collaboration)
<Astrophys. J. Suppl. Ser., 176, 276-292 (2008)>
=2008ApJS..176..276V 2008ApJS..176..276V (SIMBAD/NED BibCode)
ADC_Keywords: Interferometry ; Stars, standard ; Infrared sources
Keywords: binaries: general - catalogs - infrared: stars - stars: imaging
instrumentation: high angular resolution - techniques: interferometric
instrumentation: interferometers - stars: fundamental parameters
techniques: high angular resolution
Abstract:
The Palomar Testbed Interferometer (PTI) archive of observations
between 1998 and 2005 is examined for objects appropriate for
calibration of optical long-baseline interferometer observations -
stars that are predictably pointlike and single. Approximately 1400
nights of data on 1800 objects were examined for this investigation.
We compare those observations to an intensively studied object that is
a suitable calibrator, HD 217014, and statistically compare each
candidate calibrator to that object by computing both a Mahalanobis
distance and a principal component analysis. Our hypothesis is that
the frequency distribution of visibility data associated with
calibrator stars differs from noncalibrator stars such as binary
stars. Spectroscopic binaries resolved by PTI, objects known to be
unsuitable for calibrator use, are similarly tested to establish
detection limits of this approach. From this investigation, we find
more than 350 observed stars suitable for use as calibrators (with an
additional ∼140 being rejected), corresponding to ≳95% sky coverage
for PTI.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 277 500 Sources of photometry for stars tested as
PTI calibrators
table2.dat 80 500 Summary of spectral energy distribution fits
for potential PTI calibrator stars
table3.dat 39 500 Summary of PTI observations for each potential
calibrator, including nights observed and number
of calibrated scans, both overall and by baseline
table6.dat 118 425 Mahalanobis distance rank and principal components
analysis rank of the potential calibrator stars
refs.dat 53 268 References
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See also:
J/A+A/393/183 : Catalogue of calibrator stars for LBSI (Borde+, 2002)
J/A+A/433/1155 : 200m baseline interferometry calibrator stars (Merand+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD The HD number (Cat. III/135)
8 A1 --- WBVR [Y] WBVR photometry available (1)
10 A1 --- Geneva [Y] Geneva photometry available (1)
12 A1 --- DDO [Y] DDO photometry available (1)
14 A1 --- Vilnius [Y] Vilnius photometry available (1)
16 A1 --- 2MASS [Y] 2MASS photometry available (1)
18 A1 --- IRAS [Y] IRAS photometry available (1)
20-124 A105 --- Johnson Johnson photometry reference (2)
126-181 A56 --- Stromgren Stromgren photometry reference (2)
183-277 A95 --- JP11 11-color Johnson photometry reference (2)
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Note (1): Photometry references as follows:
2MASS = Cutri et al. (2003, Cat. II/246);
DDO = McClure (1976AJ.....81..182M 1976AJ.....81..182M); Cat. II/80
Geneva = Rufener (1976A&AS...26..275R 1976A&AS...26..275R); Cat. II/169
IRAS = Beichman et al. (1988iras....1.....B 1988iras....1.....B); Cat. II/125
Vilnius = Zdanavicius et al. (1972VilOB..34....3Z 1972VilOB..34....3Z);
WBVR = Kornilov et al. (1991TrSht..63....4K 1991TrSht..63....4K).
Note (2): See refs.dat file
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD The HD number
8- 12 A5 --- SpType MK spectral type
14- 16 I3 --- Nph Total number of photometric points used
18- 21 F4.2 --- chi2 Reduced χ2 of model
23- 26 F4.2 mag AV The V band extinction
28- 31 F4.2 mag e_AV Uncertainty in AV
33- 38 F6.2 10-11W/m2 Fbol Bolometric flux (in 10-8erg/cm2/s)
40- 44 F5.2 10-11W/m2 e_Fbol Uncertainty in Fbol
46- 50 F5.2 [solLum] logLb Log of bolometic luminosity from Fbol
52- 55 F4.2 [solLum] e_logLb Uncertainty in logLb
57 A1 --- f_logLb [a] Flag on logLb (1)
59- 63 F5.2 [solLum] logLs Log of bolometic luminosity from SpType
65- 68 F4.2 [solLum] e_logLs Uncertainty in logLs
70- 74 F5.3 mas theta Estimated angular size
76- 80 F5.3 mas e_theta Uncertainty in theta
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Note (1): Flag a as follows:
a = No Hipparcos distance available; distance estimated from comparison of
apparent mV with absolute MV expected from the spectra type.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD The HD number
8- 10 I3 --- Raw-N ? Raw nights observed
12- 14 I3 --- All-N ? All Baselines calibrated nights
16- 18 I3 --- All-S ? All Baselines calibrated scans
20- 22 I3 --- NS-N ? North-South calibrated nights
24- 26 I3 --- NS-S ? North-South calibrated scans
28- 29 I2 --- NW-N ? North-West calibrated nights
31- 33 I3 --- NW-S ? North-West calibrated scans
35- 36 I2 --- SW-N ? South-West calibrated nights
38- 39 I2 --- SW-S ? South-West calibrated scans
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1 A1 --- Cal Suitability code (1)
3- 8 I6 --- HD The HD number
10- 12 I3 --- Mah-R Mahalanobis rank
14- 18 F5.2 --- Mah-D Mahalanobis distance
20- 22 I3 --- PCA-R Principal component analysis rank
24- 28 F5.2 --- PCA-D Principal component analysis distance
30- 34 F5.3 --- Non-det ? Geometric non-detection (2)
36 A1 --- f_Non-det [N] Indicates a not applicable Non-det
38-118 A81 --- BinRef Binarity reference(s)
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Note (1): Suitability code as follows:
S = Suitable as calibrator (MD (Mahalanobis distance)
and PD (PCA distance) <1.0);
P = Probably suitable as calibrator (MD and PD<3.0);
U = Unsuitable as calibrator (MD or PD>3.0).
Note (2): Probability of a binary system non-detection due to lack of total
nights on the sky, as discussed in Section 7.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Ref Reference number
5- 23 A19 --- BibCode Bibcode
25- 53 A29 --- Aut Author's name
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 01-Jul-2009