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J/A+A/599/A85      Structure of Herbig AeBe disks at mas scale (Lazareff+, 2017)

Structure of Herbig AeBe disks at milliarcsecond scale. A statistical survey in H band using PIONIER-VLTI. Lazareff B., Berger J.-P., Kluska J., Le Bouquin J.-B., Benisty M., Malbet F., Koen C., Pinte C., Thi W.-F., Absil O., Baron F., Delboulbe A., Duvert G., Isella A., Jocou L., Juhasz A., Kraus S., Lachaume R., Menard F., Millan-Gabet R., Monnier J.D., Moulin T., Perraut K., Rochat S., Soulez F., Tallon M., Thiebaut E., Traub W., Zins G. <Astron. Astrophys. 599, A85 (2017)> =2017A&A...599A..85L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, emission ; Stars, pre-main sequence ; Morphology Keywords: (stars:) circumstellar matter - stars: variables: T Tauri, Herbig Ae / Be - stars: pre-main sequence - techniques: interferometric - techniques: photometric Abstract: The aims of this article are to infer the radial and vertical structure at ∼au scale of these disks, and the properties of the dust grains: composition and characteristic size. We find that dust at the inner rim of the disk has a sublimation temperature Tsub∼1800K. A ring structure is confirmed for approximately half the resolved objects; these rings are wide δr/r≥0.5. Such wide rings exclude an inner rim shaped as a vertical wall, or with a rounded shape, and seem to favor an inner rim with a wedge-like cross-section. The inner disk has a thickness z/r∼0.2, flaring to z/r∼0.5 in the outer part. We confirm the known luminosity-radius relation; a simple physical model is consistent with both the mean luminosity-radius relation and the ring relative width; however, a significant spread around the mean relation is present. We find in some of the objects a halo component, fully resolved at the shortest interferometer spacing, that is related to the HAeBe class. Description: As a first step towards analyzing the structure of the inner region of Herbig AeBe disk, we fitted the interferometric data with simple models: - Ellipsoid - Ring defined by the contour and a convolution kernel - Ring as above, with the addition of azimuthal modulation of order 1 or 2. The archived data files provide the results of these fits. The column labels follow generally the notations of the article, modified to conform to Vizier standards when applicable. Please refer to the article for details on the meaning of parameters. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file sed_fit.dat 99 51 SED fits ellip.dat 108 44 Ellipsoid fits ring_m0.dat 117 27 Ring fits ring_m1.dat 140 27 Ring fits, m=1 azimuthal modulation ring_m2.dat 162 27 Ring fits, m=2 azimuthal modulation
Byte-by-byte Description of file: sed_fit.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Object name 14- 18 F5.3 --- chi2r reduced chi2 of fit 20- 25 F6.3 [mW/m2] lnFnsV log10(nuFnu), stellar, V band 27- 31 F5.3 [mW/m2] e_lnFnsV Standard error for lnFnsV 33- 37 F5.3 mag AV Extinction in V band 39- 43 F5.3 mag e_AV Standard error for AV 45- 51 F7.3 [mW/m2] lnFndH log10(nuFnu), dust, H band 53- 57 F5.3 [mW/m2] e_lnFndH Standard error for lnFndH 59- 63 F5.3 [K] logTd log10 dust temperature (photometric) 65- 69 F5.3 [K] e_logTd Standard error for logTd 71- 75 F5.3 --- fd Fractional flux contribution of dust at H band 77- 81 F5.3 --- e_fd Standard error for fd 83- 86 A4 --- SpType Adopted spectral type 88- 92 F5.3 [K] logTeff log10 effective temperature 94- 99 F6.3 mag BCv Bolometric correction from V magnitude
Byte-by-byte Description of file: ellip.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Object name 14- 19 F6.2 --- chi2r Reduced chi2 of fit 21- 25 F5.2 --- kc ?=9.99[-6.0,+2.0] Spectral index of circumstellar component 27- 30 F4.2 --- e_kc ?=9.99 Standard error for kc 32- 35 F4.2 --- fs [0,1] Fractional flux stellar component 37- 40 F4.2 --- e_fs Standard error for fs 42- 45 F4.2 --- fh [0,1] Fractional flux "halo" component 47- 50 F4.2 --- e_fh Standard error for fh 52- 55 F4.2 --- cosi Cosine inclination (1.0 face-on) 57- 60 F4.2 --- e_cosi Standard error for fh 62- 64 I3 deg PA Position angle of major axis (East from North) 66- 67 I2 deg e_PA Standard error for PA 69- 72 F4.2 --- flor [0,1] Weighting for radial profile 74- 77 F4.2 --- e_flor Standard error for flor 79- 83 F5.2 [mas] logla log10 half light radius 85- 88 F4.2 [mas] e_logla Standard error for logla 90- 93 F4.2 --- fc [0,1] Fractional flux circumstellar component 95- 98 F4.2 --- e_fc Standard error for fc 100-103 F4.2 [K] logTdi log10 dust temperature (interferometric) 105-108 F4.2 [K] e_logTdi Standard error for logTdi
Byte-by-byte Description of file: ring_m0.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Object name 14- 17 F4.2 --- chi2r Reduced chi2 of fit 19- 23 F5.2 --- kc ?=9.99[-6.0,+2.0] Spectral index of circumstellar component 25- 28 F4.2 --- e_kc ?=9.99 Standard error for kc 30- 33 F4.2 --- fs [0,1] Fractional flux stellar component 35- 38 F4.2 --- e_fs Standard error for fs 40- 43 F4.2 --- fh [0,1] Fractional flux "halo" component 45- 48 F4.2 --- e_fh Standard error for fh 50- 53 F4.2 --- cosi cosine inclination (1.0 face-on) 55- 58 F4.2 --- e_cosi Standard error for fh 60- 62 I3 deg PA Position angle of major axis (East from North) 64- 65 I2 deg e_PA Standard error for PA 67- 70 F4.2 --- flor [0,1] Weighting for radial profile 72- 75 F4.2 --- e_flor Standard error for flor 77- 81 F5.2 [mas] logla log10 half light radius 83- 86 F4.2 [mas] e_logla Standard error for logla 88- 91 F4.2 --- fr [0,1] Fractional flux ring component 93- 96 F4.2 --- e_fr Standard error for fr 98-102 F5.2 --- lrkr log10 ratio kernel radius 104-107 F4.2 --- e_lrkr Standard error for lrkr 109-112 F4.2 [K] logTdi log10 dust temperature (interferometric) 114-117 F4.2 [K] e_logTdi Standard error for logTdi
Byte-by-byte Description of file: ring_m1.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Object name 14- 18 F5.2 --- chi2r reduced chi2 of fit 20- 24 F5.2 --- kc ?=9.99[-6.0,+2.0] Spectral index of circumstellar component 26- 29 F4.2 --- e_kc ?=9.99 Standard error for kc 31- 34 F4.2 --- fs [0,1] Fractionalflux stellar component 36- 39 F4.2 --- e_fs Standard error for fs 41- 44 F4.2 --- fh [0,1] Fractionalflux "halo" component 46- 49 F4.2 --- e_fh Standard error for fh 51- 54 F4.2 --- cosi cosine inclination (1.0 face-on) 56- 59 F4.2 --- e_cosi Standard error for fh 61- 63 I3 deg PA Position angle of major axis (East from North) 65- 66 I2 deg e_PA Standard error for PA 68- 71 F4.2 --- flor [0,1] Weighting for radial profile 73- 76 F4.2 --- e_flor Standard error for flor 78- 82 F5.2 [mas] logla log10 half light radius 84- 87 F4.2 [mas] e_logla Standard error for logla 89- 92 F4.2 --- fr [0,1] Fractionalflux ring component 94- 97 F4.2 --- e_fr Standard error for fr 99-103 F5.2 --- lrkr log10 ratio kernel radius 105-108 F4.2 --- e_lrkr Standard error for lrkr 110-114 F5.2 --- mc1 cos modulation order 1 116-119 F4.2 --- e_mc1 Standard error for mc1 121-125 F5.2 --- ms1 sin modulation order 1 127-130 F4.2 --- e_ms1 Standard error for ms1 132-135 F4.2 [K] logTdi log10 dust temperature (interferometric) 137-140 F4.2 [K] e_logTdi Standard error for logTdi
Byte-by-byte Description of file: ring_m2.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Object name 14- 18 F5.2 --- chi2r reduced chi2 of fit 20- 24 F5.2 --- kc ?=9.99[-6.0,+2.0] Spectral index of circumstellar component 26- 29 F4.2 --- e_kc ?=9.99 standard error for kc 31- 34 F4.2 --- fs [0,1] Fractional flux stellar component 36- 39 F4.2 --- e_fs Standard error for fs 41- 44 F4.2 --- fh [0,1] Fractional flux "halo" component 46- 49 F4.2 --- e_fh Standard error for fh 51- 54 F4.2 --- cosi cosine inclination (1.0 face-on) 56- 59 F4.2 --- e_cosi Standard error for fh 61- 63 I3 deg PA Position angle of major axis (East from North) 65- 66 I2 deg e_PA Standard error for PA 68- 71 F4.2 --- flor [0,1] Weighting for radial profile 73- 76 F4.2 --- e_flor Standard error for flor 78- 82 F5.2 [mas] logla log10 half light radius 84- 87 F4.2 [mas] e_logla Standard error for logla 89- 92 F4.2 --- fr [0,1] Fractional flux ring component 94- 97 F4.2 --- e_fr Standard error for fr 99-103 F5.2 --- lrkr log10 ratio kernel radius 105-108 F4.2 --- e_lrkr Standard error for lrkr 110-114 F5.2 --- mc1 cos modulation order 1 116-119 F4.2 --- e_mc1 Standard error for mc1 121-125 F5.2 --- ms1 sin modulation order 1 127-130 F4.2 --- e_ms1 Standard error for ms1 132-136 F5.2 --- mc2 cos modulation order 2 138-141 F4.2 --- e_mc2 Standard error for mc2 143-147 F5.2 --- ms2 sin modulation order 2 149-152 F4.2 --- e_ms2 Standard error for ms2 154-157 F4.2 [K] logTdi log10 dust temperature (interferometric) 159-162 F4.2 [K] e_logTdi Standard error for logTdi
Acknowledgements: Bernard Lazareff, bernard.lazareff(at)univ-grenoble-alpes.fr
(End) Patricia Vannier [CDS] 30-Nov-2016
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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