J/A+A/466/1099 N-band visibilities of V Oph (Ohnaka+, 2007)
Temporal variations of the outer atmosphere and the dust shell of the
carbon-rich Mira variable V Oph probed with VLTI/MIDI.
Ohnaka K., Driebe T., Weigelt G., Wittkowski M.
<Astron. Astrophys. 466, 1099 (2007)>
=2007A&A...466.1099O 2007A&A...466.1099O
ADC_Keywords: Interferometry ; Stars, carbon ; Stars, variable ;
Photometry, infrared
Keywords: infrared: stars - techniques: interferometric -
stars: circumstellar matter - stars: carbon -
stars: AGB and post-AGB - stars: individual: V Oph
Abstract:
We present the first multi-epoch N-band spectro-interferometric
observations of the carbon-rich Mira variable V Oph using MIDI at the
ESO's Very Large Telescope Interferometer. Our aim is to study
temporal variations of physical properties of the outer atmosphere and
the circumstellar dust shell based on spectrally-dispersed N-band
visibilities over the C2H2 (+HCN) features and the dust emission.
Description:
N-band visibilities of the carbon-rich Mira variable V Oph observed
with VLTI/MIDI on six nights between April and September 2005. For
each data set, the visibilities at 101 wavelengths between 7.7 and
13.2 micron are tabulated.
Objects:
------------------------------------------
RA (2000) DE Designation(s)
------------------------------------------
16 26 43.7 -12 25 36 V Oph = HD 148182
------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 78 101 N-band visibilities of V Oph measured on six
nights between April and September 2005
--------------------------------------------------------------------------------
See also:
J/A+A/330/505 : Carbon stars IR emission (Blanco+ 1998)
J/A+A/344/263 : B-V colour excess of Miras (Knapik+, 1999)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 F6.3 um lambda Wavelength in micron
7- 12 F6.3 --- V1 Visibility taken on 2005 Apr. 17, phase 0.18
13- 18 F6.3 --- e_V1 Visibility error on 2005 Apr. 17
19- 24 F6.3 --- V2 Visibility taken on 2005 Apr. 18, phase 0.18
25- 30 F6.3 --- e_V2 Visibility error on 2005 Apr. 18
31- 36 F6.3 --- V3 Visibility taken on 2005 Jul. 19, phase 0.49
37- 42 F6.3 --- e_V3 Visibility error on 2005 Jul. 19
43- 48 F6.3 --- V4 Visibility taken on 2005 Jul. 23, phase 0.49
49- 54 F6.3 --- e_V4 Visibility error on 2005 Jul. 23
55- 60 F6.3 --- V5 Visibility taken on 2005 Aug. 24, phase 0.61
61- 66 F6.3 --- e_V5 Visibility error on 2005 Aug. 24
67- 72 F6.3 --- V6 Visibility taken on 2005 Sep. 18, phase 0.69
73- 78 F6.3 --- e_V6 Visibility error on 2005 Sep. 18
--------------------------------------------------------------------------------
Acknowledgements:
Keiichi Ohnaka, kohnaka(at)mpifr-bonn.mpg.de
(End) Keiichi Ohnaka [MPIfR, Germany], Patricia Vannier [CDS] 06-Mar-2007