J/A+A/542/A53 VR + velocity variations of IRAS 11472-0800 (Van Winckel+, 2012)
IRAS 11472-0800: an extremely depleted pulsating binary post-AGB star.
Van Winckel H., Hrivnak B.J., Gorlova N., Gielen C., Lu W.
<Astron. Astrophys. 542, A53 (2012)>
=2012A&A...542A..53V 2012A&A...542A..53V
ADC_Keywords: Binaries, spectroscopic ; Photometry, VRI ; Radial velocities
Keywords: stars: AGB and post-AGB - binaries: general -
binaries: spectroscopic - stars: chemically peculiar -
stars: evolution - stars: abundances
Abstract:
We focus here on one particular and poorly studied object,
IRAS 11472-0800. It is a highly evolved post-asymptotic giant branch
(post-AGB) star of spectral type F, with a large infrared excess
produced by thermal emission of circumstellar dust.
We deployed a multi-wavelength study that includes the analyses of
optical and IR spectra as well as a variability study based on
photometric and spectroscopic time-series.
Description:
Photometric observations of IRAS 11472-0800 were carried out at the
Valparaiso University Observatory (VUO) from 1995 to 2008. These were
made with the 0.4-m campus telescope and CCD camera using standard V
and R filters.
Objects:
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RA (2000) DE Designation(s)
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11 49 48.04 -08 17 20.5 IRAS 11472-0800 = V* AF Crt
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 59 75 Differential standard magnitudes and colours of IRAS
11472-0800 from Valparaiso University Observatory
table6.dat 26 49 Barycentric radial velocity data of IRAS 11472-0800
obtained with the HERMES spectrograph
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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- 12 F12.4 d HJDV V-band heliocentric Julian date
14- 19 F6.3 mag DVmag Differential V magnitude
21- 32 F12.4 d HJDR ? R-band heliocentric Julian date
34- 39 F6.3 mag DRmag ? Differential R magnitude
41- 52 F12.4 d HJDV-R ? V-R heliocentric Julian date
54- 59 F6.3 mag DV-R ? Differential V-R colour index
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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- 15 F15.7 d HJD Heliocentric Julian date
17- 21 F5.2 km/s RV Barycentric radial velocity
23- 26 F4.2 km/s e_RV rms uncertainty on RV
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 02-May-2012