J/A+A/561/A137 Optical spectra of IGR J21343+4738 (Reig+, 2014)
Disc-loss episode in the Be shell optical counterpart to the high-mass
X-ray binary IGR J21343+4738.
Reig P., Zezas A.
<Astron. Astrophys. 561, A137 (2014)>
=2014A&A...561A.137R 2014A&A...561A.137R
ADC_Keywords: Binaries, X-ray ; Spectroscopy
Keywords: stars: individual: IGR J21343+4738 - X-rays: binaries -
stars: neutron - stars: emission line, Be
Abstract:
Present X-ray missions are regularly discovering new X-ray and
gamma-ray sources. The identification of their counterparts at other
wavelengths allows us to determine their nature.
The main goal of this work is to determine the properties of the
optical counterpart to the INTEGRAL source IGR J21343+4738, and to
study its long-term optical variability. Although its nature as a
Be/X-ray binary has been suggested, little is known about its physical
parameters.
We have been monitoring IGR J21343+4738 since 2009 in the optical
band. We present BVRI optical photometric and spectroscopic
observations covering the wavelength band 4000-7500Å. The
photometric data allowed us to derive the colour excess E(B-V) and
estimate the distance. The blue-end spectra were used to determine the
spectral type of the optical companion, while the spectra around the
Halpha line allowed us to study the long-term structural changes in
the circumstellar disc.
Description:
Optical spectra of IGR J21343+4738. Optical spectroscopic and
photometric observations of the optical counterpart to the INTEGRAL
source IGR J21343+4738 were obtained from the 1.3m telescope of the
Skinakas observatory (SKO) on the island of Crete (Greece) and from
the Fred Lawrence Whipple Observatory (FLWO) at Mt. Hopkins (Arizona).
In addition, IGR J21343+4738 was observed in service time with the
4.2m William Herschel Telescope (WHT) at the El Roque de los
Muchachos observatory in La Palma (Spain).
Objects:
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RA (2000) DE Designation(s)
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21 34 20.37 +47 38 00.4 IGR J21343+4738 = IGR J21343+4738
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 62 24 List of spectra
sp/* . 24 Individual FITS spectra
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "YYYY/MM/DD" Date Observation date (2008 to 2013)
12 A1 --- Tel [sfw] Telescope used (1)
14 A1 --- r/b [rb] (r)ed or (b)lue end spectrum
16- 22 F7.2 0.1nm lam.min [3797/6370] Wavelength interval lower value
23 A1 --- --- [/]
24- 30 F7.2 0.1nm lam.max [4669/7600] Wavelength interval upper value
32- 39 F8.6 0.1nm Dlam Wavelength step
42- 45 I4 --- Nx Number of pixels along X-axis
46 A1 --- --- [x]
47 I1 --- Ny ? Number of spectra
49- 62 A14 --- FileName Name of the FITS spectrum in subdirectory sp
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Note (1): Telescopes as follows:
s = 1.3m telescope at the Skinakas observatory
f = 1.5m telescope at the Fred Lawrence Whipple Observatory
w = William Herschel Telescope at the Roque de los Muchachos observatory
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Acknowledgements:
Pablo Reig, pau (at)physics.uoc.gr
(End) Pablo Reig [FORTH], Patricia Vannier [CDS] 02-Dec-2013