Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/654/527   Interferometric observations of northern Be stars  (Gies+, 2007)

CHARA array K'-band measurements of the angular dimensions of Be star disks. Gies D.R., Bagnuolo W.G.JR, Baines E.K., Ten Brummelaar T.A., Farrington C.D., Goldfinger P.J., Grundstrom E.D., Huang W., McAlister H.A., Merand A., Sturmann J., Sturmann L., Touhami Y., Turner N.H., Wingert D.W., Berger D.H., McSwain M.V., Aufdenberg J.P., Ridgway S.T., Cochran A.L., Lester D.F., Sterling N.C., Bjorkman J.E., Bjorkman K.S., Koubsky P. <Astrophys. J., 654, 527-543 (2007)> =2007ApJ...654..527G
ADC_Keywords: Stars, Be ; Stars, emission ; Interferometry Keywords: stars: emission-line, Be - stars: individual (γ Cas; φ Per; ζ Tau; κ Dra) - techniques: interferometric Abstract: We present the first K'-band, long-baseline interferometric observations of the northern Be stars γ Cas, φ Per, ζ Tau, and κ Dra. The measurements were made with multiple telescope pairs of the CHARA Array interferometer and in every case the observations indicate that the circumstellar disks of the targets are resolved. We fit the interferometric visibilities with predictions from a simple disk model that assumes an isothermal gas in Keplerian rotation. We derive fits of the four model parameters (disk base density, radial density exponent, disk normal inclination, and position angle) for each of the targets. Description: The Georgia State University Center for High Angular Resolution Astronomy (CHARA) Array observations were made on various dates during the first 2 years of operation. Objects: ------------------------------------------------------------------- RA (2000) DE Designation(s) SpType Period(d) ------------------------------------------------------------------- 00 56 43 +60 43.0 gamma Cas = * gam Cas B0.5Ve 203.59 12 33 29 +69 47.3 kappa Dra = * kap Dra B5-6IIIe 62.56 01 43 40 +50 41.3 phi Per = V* phi Per B0.5III-Ve 126.67 05 37 39 +21 08.6 zeta Tau = * zet Tau B2IIIpe 132.91 ------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 59 153 Calibrated K' visibilities
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Target name 11- 21 F11.3 d HJD Heliocentric Julian Date 23- 27 F5.3 --- Phase Orbital phase 29- 33 A5 --- TPair Telescope pairing 35- 40 F6.2 m Base Telescope pair baseline 42- 47 F6.2 deg PA Position angle of the target as viewed from the telescope pair 49- 53 F5.3 --- Vis Calibrated visibility with Base 55- 59 F5.3 --- e_Vis Error in Vis (1)
Note (1): The formal visibility errors listed here may underestimate the actual errors by a factor of ∼2.8 (Section 2.2).
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 12-Nov-2008
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

catalogue service

© UDS/CNRS

Contact