J/PAZh/36/144 JHKLM photometry of 3 RV Tau supergiants (Taranova+, 2010)
Infrared photometry for three RV Tau variable stars.
Taranova O.G., Shenavrin V.I., Tatarnikov A.M.
<Pis'ma Astron. Zh. 36, 144 (2010)>
=2010PAZh...36..144T 2010PAZh...36..144T
=2010AstL...36..134T 2010AstL...36..134T
ADC_Keywords: Stars, variable ; Stars, supergiant ; Photometry, infrared
Keywords: RV Tau variable stars - infrared photometry - variability -
dust shells
Abstract:
We have analyzed our long-term (1995-2008) JHKLM photometry for
three variable RV Tau supergiants. It follows from this analysis that:
the amplitude of the JHK brightness variations is approximately the
same, 0.9-1mag, for the three stars; a negative linear trend is
noticeable in the variations of the mean J brightness for AC Her; and
the mean J brightness of R Sct and V Vul remained constant. The
observed J brightness fluctuations in the supergiants are shown to be
consistent either only with the temperature pulsations (AC Her and
V Vul) or with the temperature and radial pulsations (R Sct).
Objects:
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RA (2000) DE Designation(s)
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18 30 16.2 +21 52 01 AC Her = V* AC Her
18 47 29.0 -05 42 19 R Sct = V* R Sct
20 36 32.0 +26 36 15 V Vul = V* V Vul
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 53 147 Infrared photometry for the objects under study
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name Star name
8- 18 F11.3 d JD Julian date
20- 23 F4.2 mag Jmag J magnitude
25- 28 F4.2 mag Hmag ?=- H magnitude
30- 33 F4.2 mag Kmag ?=- K magnitude
35- 38 F4.2 mag Lmag ?=- L magnitude
40- 43 F4.2 mag e_Lmag ?=- rms uncertainty on Lmag
45- 48 F4.2 mag Mmag ?=- M magnitude
50- 53 F4.2 mag e_Mmag ?=- rms uncertainty on Mmag
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Mar-2010