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J/ApJ/636/932        Mid-infrared survey of T Tauri stars        (McCabe+, 2006)

Investigating disk evolution: a high spatial resolution mid-infrared survey of T Tauri stars. McCabe C., Ghez A.M., Prato L., Duchene G., Fisher R.S., Telesco C. <Astrophys. J., 636, 932-951 (2006)> =2006ApJ...636..932M
ADC_Keywords: Stars, double and multiple ; Stars, pre-main sequence ; Photometry, infrared Keywords: binaries: close - circumstellar matter - planetary systems: protoplanetary disks - stars: pre-main-sequence Abstract: We present a high spatial resolution, 10-20µm survey of 65 T Tauri binary stars in Taurus, Ophiuchus, and Corona Australis using the Keck 10m telescopes. Designed to probe the inner ∼1AU region of the circumstellar disks around the individual stellar components in these binary systems, this study increases the number of binaries with spatially resolved measurements at 10µm by a factor of ∼5. Description: High angular resolution mid-infrared observations were made at the Keck 10m telescopes using two instruments: OSCIR, a visiting mid-infrared (8-25µm) camera, and the Long Wavelength Spectrometer (LWS), the facility mid-infrared imaging spectrograph. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 78 65 T Tauri binary sample table3.dat 133 195 Observational results table4.dat 108 71 Stellar component colors refs.dat 159 15 References
See also: J/A+A/376/982 : Near-IR observations of young binaries (Woitas+, 2001) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Const Constellation 18- 33 A16 --- Name Object name 35 A1 --- m_Name Multiplicity index on Name 37- 40 F4.2 arcsec Sep Separation between components 41 A1 --- --- [/] 42- 46 F5.2 arcsec Sep2 ? Second value of separation 48- 49 I2 h RAh Hour of Right Ascension (J2000.0) 51- 52 I2 min RAm Minute of Right Ascension (J2000.0) 54- 57 F4.1 s RAs Second of Right Ascension (J2000.0) 59 A1 --- DE- Sign of the Declination (J2000.0) 60- 61 I2 deg DEd Degree of Declination (J2000.0) 63- 64 I2 arcmin DEm Arcminute of Declination (J2000.0) 66- 67 I2 arcsec DEs Arcsecond of Declination (J2000.0) 69- 78 A10 --- Ref References (1)
Note (1): References, defined as follows: 1 = Ghez et al. 1993AJ....106.2005G 2 = Leinert et al. 1993A&A...278..129L 3 = Simon et al. 1995ApJ...443..625S 4 = Ghez et al. 1997ApJ...490..353G 5 = Reipurth & Zinnecker 1993A&A...278...81R 6 = Simon et al. 1996ApJ...469..890S 7 = Walter et al. 1988AJ.....96..297W 8 = Ghez et al. 1994, in ASP Conf. Ser. 56, Interacting Binary Stars, ed. A.W. Shafter (San Francisco: ASP), 221
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Const Constellation 18- 33 A16 --- Name Object name 35- 39 A5 --- m_Name Multiplicity index on Name 41 A1 --- n_Name [ef] Individual notes (1) 43- 52 A10 "YYYY/MM/DD" ObsDate UT year of the observation 54- 58 A5 --- Filt Filter used (2) 60- 65 F6.3 arcsec Sep ? Separation 67- 71 F5.3 arcsec e_Sep ? Uncertainty in Sep 73- 77 F5.1 deg PA ? Position angle 79- 81 F3.1 deg e_PA ? Uncertainty in PA 83- 88 F6.3 --- Ratio ? Flux ratio F(A)/F(B) 90- 94 F5.3 --- e_Ratio ? Uncertainty in Ratio 96-101 F6.3 mag magA ? The Filt magnitude of the Primary 103-107 F5.3 mag e_magA ? Uncertainty in magA 109-114 F6.3 mag magB ? The Filt magnitude of the Secondary 116-120 F5.3 mag e_magB ? Uncertainty in magB 122-126 F5.2 mag magT ? The Filt magnitude of the Total (3) 128-131 F4.2 mag e_magT ? Uncertainty in mag 133 A1 --- f_magT [*cd] Flag on Totmag (4)
Note (1): Note on Name, defined as follows: e = A third object, situated 11.1" from NTTS155203-2338A at a position angle of 164.4°, was observed at K band (12.2±0.2mag) and L band (11.57±0.01mag). Given the preponderance of objects within 1' of NTTS 155203-2338, this is likely to be a background object but has not been confirmed. f = A third object, located 16.5" away from DoAr 26 A at a position angle of 49.3°, was also detected, with K=11.6±0.2mag and L=11.6±0.8mag. It is not known whether this object is physically associated with DoAr 26 or not. Note (2): The filters used here are defined as follows: 12.5 = OCLI-S band (12.5µm ; F(Vega)=24.96Jy) 8.8 = OCLI-O band (8.8µm ; F(Vega)=49.26Jy) IHW18 = IHW band (18.1µm ; F(Vega)=11.96Jy) N = N band (10.8µm ; F(Vega)=33.99Jy) K = K band (2.2µm) L = L band (3.5µm) SiC = SiC band (11.8µm ; Vega flux = 24.96Jy) See Appendix B for details on the absolute photometric calibration. Note (3): Represents the magnitude of both primary and secondary combined, unless the value is starred. In this case, the observations reveal one point source and it is not clear which component the flux belongs to. Note (4): Flag on magT, defined as follows: c = Chopping errors provide unresolved flux only. d = Secondary marginally resolved in IRTF L-band observations causing large uncertainties in fluxes from PSF fitting. Used L-band results from White & Ghez (2001ApJ...556..265W) for final sample.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Name Object name 18 A1 --- m_Name Multiplicity index on Name 20 A1 --- f_Name [d] Flag on Name (1) 22- 26 A5 --- Comp Component 29- 32 F4.2 mag AV The V band extinction (2) 33 A1 --- f_AV Flag on AV (3) 35- 38 A4 --- SpType Spectral type 40- 44 F5.2 mag K-L The dereddened (K-L) color index 46- 49 F4.2 mag e_K-L Uncertainty in K-L 51- 55 F5.2 mag K-N The dereddened (K-[N]) color index 57- 60 F4.2 mag e_K-N Uncertainty in K-N 62- 63 I2 --- r_Nmag The MIR (N bands) reference (4) 65 A1 --- r_Kmag The NIR (K band) reference(s) (4) 67 A1 --- r_Lmag The NIR (L band) reference(s) (4) 69- 78 A10 --- Line Emission line present 80- 84 F5.1 0.1nm EWHa ? The Hα equivalent width in Angstroms 86- 88 A3 --- TTcl The T Tau class (I, II or III) 90 A1 --- TTt [CW] The T Tauri type: Classical or Weak 92 A1 --- f_TTt [c] Borderline case on TTt (5) 94-100 A7 --- r_Line Line emission and spectral type reference(s) (4) 102-108 A7 --- Notes Additional notes
Note (1): A "d" indicates that ROX 15 flickers in accretion; Prato et al. (2003ApJ...584..853P) see no Brγ in either component, whereas Greene & Meyer (1995ApJ...450..233G) and Luhman & Rieke (1999ApJ...525..440L) do see Brγ in resolved system. Went with C/C because system seen to be accreting at least on some occasions. Note (2): Measured from photometry for combined system. Note (3): A "]" indicates an assumed extinction of 0.0mag in cases where J-H and H-K colors fall below the CTTS (Classical T Tau star) locus. Note (4): Note that the reference numbers differ from the printed version. Note (5): A "c" indicates that Hartigan & Kenyon (2003ApJ...583..334H) find an EWHa=23±4Å, on the border between CTTS/WTTS (classical/weak). Based on this, the lack of veiling and [OI] emission, and NIR excess, they define it to be a WTTS. We use their classification here.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- Bibcode Bibcode 24- 48 A25 --- Aut Author's name 50-159 A110 --- Com Comment
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 29-Dec-2006
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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