IGR J16194-2810: A new symbiotic X-ray binary

N. Masetti, R. Landi, M. L. Pretorius, V. Sguera, A. J. Bird, M. Perri, P. A. Charles, J. A. Kennea, A. Malizia, P. Ubertini

Research output: Contribution to journalArticle

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Abstract

We here report on the multiwavelength study which led us to the identification of X-ray source IGR J16194-2810 as a new Symbiotic X-ray Binary (SyXB), that is, a rare type of Low Mass X-ray Binary (LMXB) composed of a M-type giant and a compact object. Using the accurate X-ray position allowed by Swift/XRT data, we pinpointed the optical counterpart, a M2 III star. Besides, the combined use of the spectral information afforded by XRT and INTEGRAL/IBIS shows that the 0.5-200 keV spectrum of this source can be described with an absorbed Comptonization model, usually found in LMXBs and, in particular, in SyXBs. No long-term (days to months) periodicities are detected in the IBIS data. The time coverage afforded by XRT reveals shot-noise variability typical of accreting Galactic X-ray sources, but is not good enough to explore the presence of X-ray short-term (seconds to hours) oscillations in detail. By using the above information, we infer important parameters for this source such as its distance (∼3.7 kpc) and X-ray luminosity (∼1.4×1035 erg s-1 in the 0.5-200 keV band), and we give a description for this system (typical of SyXBs) in which a compact object (possibly a neutron star) accretes from the wind of its M-type giant companion. We also draw some comparisons between IGR J16194-2810 and other sources belonging to this subclass, finding that this object resembles SyXBs 4U 1700+24 and 4U 1954+31.

Original languageEnglish (US)
Pages (from-to)331-337
Number of pages7
JournalAstronomy and Astrophysics
Volume470
Issue number1
DOIs
StatePublished - Jul 1 2007

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x rays
shot noise
erg
neutron stars
periodicity
periodic variations
oscillation
luminosity
stars
oscillations
comparison
parameter

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Masetti, N., Landi, R., Pretorius, M. L., Sguera, V., Bird, A. J., Perri, M., ... Ubertini, P. (2007). IGR J16194-2810: A new symbiotic X-ray binary. Astronomy and Astrophysics, 470(1), 331-337. https://doi.org/10.1051/0004-6361:20077509
Masetti, N. ; Landi, R. ; Pretorius, M. L. ; Sguera, V. ; Bird, A. J. ; Perri, M. ; Charles, P. A. ; Kennea, J. A. ; Malizia, A. ; Ubertini, P. / IGR J16194-2810 : A new symbiotic X-ray binary. In: Astronomy and Astrophysics. 2007 ; Vol. 470, No. 1. pp. 331-337.
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Masetti, N, Landi, R, Pretorius, ML, Sguera, V, Bird, AJ, Perri, M, Charles, PA, Kennea, JA, Malizia, A & Ubertini, P 2007, 'IGR J16194-2810: A new symbiotic X-ray binary', Astronomy and Astrophysics, vol. 470, no. 1, pp. 331-337. https://doi.org/10.1051/0004-6361:20077509

IGR J16194-2810 : A new symbiotic X-ray binary. / Masetti, N.; Landi, R.; Pretorius, M. L.; Sguera, V.; Bird, A. J.; Perri, M.; Charles, P. A.; Kennea, J. A.; Malizia, A.; Ubertini, P.

In: Astronomy and Astrophysics, Vol. 470, No. 1, 01.07.2007, p. 331-337.

Research output: Contribution to journalArticle

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T2 - A new symbiotic X-ray binary

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AU - Landi, R.

AU - Pretorius, M. L.

AU - Sguera, V.

AU - Bird, A. J.

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AU - Charles, P. A.

AU - Kennea, J. A.

AU - Malizia, A.

AU - Ubertini, P.

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N2 - We here report on the multiwavelength study which led us to the identification of X-ray source IGR J16194-2810 as a new Symbiotic X-ray Binary (SyXB), that is, a rare type of Low Mass X-ray Binary (LMXB) composed of a M-type giant and a compact object. Using the accurate X-ray position allowed by Swift/XRT data, we pinpointed the optical counterpart, a M2 III star. Besides, the combined use of the spectral information afforded by XRT and INTEGRAL/IBIS shows that the 0.5-200 keV spectrum of this source can be described with an absorbed Comptonization model, usually found in LMXBs and, in particular, in SyXBs. No long-term (days to months) periodicities are detected in the IBIS data. The time coverage afforded by XRT reveals shot-noise variability typical of accreting Galactic X-ray sources, but is not good enough to explore the presence of X-ray short-term (seconds to hours) oscillations in detail. By using the above information, we infer important parameters for this source such as its distance (∼3.7 kpc) and X-ray luminosity (∼1.4×1035 erg s-1 in the 0.5-200 keV band), and we give a description for this system (typical of SyXBs) in which a compact object (possibly a neutron star) accretes from the wind of its M-type giant companion. We also draw some comparisons between IGR J16194-2810 and other sources belonging to this subclass, finding that this object resembles SyXBs 4U 1700+24 and 4U 1954+31.

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Masetti N, Landi R, Pretorius ML, Sguera V, Bird AJ, Perri M et al. IGR J16194-2810: A new symbiotic X-ray binary. Astronomy and Astrophysics. 2007 Jul 1;470(1):331-337. https://doi.org/10.1051/0004-6361:20077509