J/AJ/143/130 VIJH light curves of the X-Ray binary GX 339-4 (Buxton+, 2012)
Optical and near-infrared monitoring of the black hole X-Ray binary GX 339-4
during 2002-2010.
Buxton M.M., Bailyn C.D., Capelo H.L., Chatterjee R., Dincer T.,
Kalemci E., Tomsick J.A.
<Astron. J., 143, 130 (2012)>
=2012AJ....143..130B 2012AJ....143..130B
ADC_Keywords: Binaries, X-ray ; Photometry, VRI ; Photometry, infrared
Keywords: binaries: close - black hole physics - infrared: stars -
radiation mechanisms: non-thermal - radiation mechanisms: thermal -
stars: individual (GX 339-4)
Abstract:
We present the optical/infrared (O/IR) light curve of the black hole
X-ray binary GX 339-4 collected at the SMARTS 1.3m telescope from
2002 to 2010. During this time the source has undergone numerous state
transitions including hard-to-soft state transitions when we see large
changes in the near-IR flux accompanied by modest changes in optical
flux, and three rebrightening events in 2003, 2005, and 2007 after
GX 339-4 transitioned from the soft state to the hard. All but one
outburst show similar behavior in the X-ray hardness-intensity
diagram. We show that the O/IR colors follow two distinct tracks that
reflect either the hard or soft X-ray state of the source. Thus,
either of these two X-ray states can be inferred from O/IR
observations alone. From these correlations we have constructed
spectral energy distributions of the soft and hard states. During the
hard state, the near-IR data have the same spectral slope as
simultaneous radio data when GX 339-4 was in a bright optical state,
implying that the near-IR is dominated by a non-thermal source, most
likely originating from jets. Non-thermal emission dominates the
near-IR bands during the hard state at all but the faintest optical
states, and the fraction of non-thermal emission increases with
increasing optical brightness. The spectral slope of the optical bands
indicate that a heated thermal source is present during both the soft
and hard X-ray states, even when GX 339-4 is at its faintest optical
state. We have conducted a timing analysis of the light curve for the
hard and soft states and find no evidence of a characteristic
timescale within the range of 4-230days.
Description:
O/IR observations of GX 339-4 were taken with the ANDICAM4 camera on
the SMARTS 1.3m telescope from 2002 to 2010.
Objects:
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RA (2000) DE Designation(s)
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17 02 49.36 -48 47 22.8 GX 339-4 = V* V821 Ara
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 134 1738 Calibrated V-, I-, J-, and H-band magnitudes,
fluxes and their errors of GX 339-4 from
2002-2010, inclusive
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See also:
B/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2013)
V/106 : Catalogue of X-ray binaries (Liu+ 2001)
VI/117 : Observation Log from ASCA (PLAIN Center, 2001)
IX/6 : Positions of X-Ray Sources, 2nd ed. (Dolan 1983)
IX/8 : Second Catalogue of X-ray Sources (Amnuel+ 1982)
J/A+A/545/A27 : INTEGRAL/IBIS 9-yr Galactic X-Ray Survey (Krivonos+, 2012)
J/A+A/542/A56 : Spectral analysis of 2010-11 outburst of GX339-4 (Nandi+, 2012)
J/AJ/141/129 : Chandra Transmission Grating Data Catalog (Huenemoerder+, 2011)
J/A+A/522/A68 : Variable sources detected by INTEGRAL (Telezhinsky+, 2010)
J/ApJ/699/453 : Determination of black hole masses (Shaposhnikov+, 2009)
J/A+A/469/807 : Catalogue of Galactic low-mass X-ray binaries (Liu+, 2007)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 F10.5 d JD [2297.85/5736.72] Julian Date at observation
start; JD-2450000
12- 17 F6.3 mag Vmag [14.74/20.8]? SMARTS V band magnitude
18 A1 --- f_Vmag [*] Flag on Vmag (1)
20- 24 F5.3 mag e_Vmag ? Error in Vmag
26- 32 F7.5 Jy FV ? SMARTS V band flux density
33 A1 --- f_FV [*] Flag on FV (1)
35- 41 F7.5 Jy e_FV ? Error in FV
43- 48 F6.3 mag Imag [13.42/19.16]? SMARTS I band magnitude
49 A1 --- f_Imag [*] Flag on Imag (1)
51- 55 F5.3 mag e_Imag ? Error in Imag
57- 63 F7.5 Jy FI ? SMARTS I band flux density
64 A1 --- f_FI [*] Flag on FI (1)
66- 72 F7.5 Jy e_FI ? Error in FI
74- 79 F6.3 mag Jmag [11.83/18.97]? SMARTS J band magnitude
80 A1 --- f_Jmag [*] Flag on Jmag (1)
82- 86 F5.3 mag e_Jmag ? Error in Jmag
88- 94 F7.5 Jy FJ ? SMARTS J band flux density
95 A1 --- f_FJ [*] Flag on FJ (1)
97-103 F7.5 Jy e_FJ ? Error in FJ
105-110 F6.3 mag Hmag [10.92/17.47]? SMARTS H band magnitude
111 A1 --- f_Hmag [*] Flag on Hmag (1)
113-117 F5.3 mag e_Hmag ? Error in Hmag
119-125 F7.5 Jy FH ? SMARTS H band flux density
126 A1 --- f_FH [*] Flag on FH
128-134 F7.5 Jy e_FH ? Error in FH
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Note (1):
* = Seeing degraded such that DAOPHOT was not able to separate the PSF
profile of GX 339-4 from the two nearby stars.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 03-Jul-2013