2016A&A...589A..34G

Query : 2016A&A...589A..34G

2016A&A...589A..34G - Astronomy and Astrophysics, volume 589A, 34-34 (2016/5-1)

New orbital ephemerides for the dipping source 4U 1323-619: constraining the distance to the source.

GAMBINO A.F., IARIA R., DI SALVO T., DEL SANTO M., BURDERI L., MATRANGA M., PINTORE F., RIGGIO A. and SANNA A.

Abstract (from CDS):

Context. 4U 1323-619 is a low mass X-ray binary system that shows type I X-ray bursts and dips. The most accurate estimation of the orbital period is 2.941923(36)h and a distance from the source that is lower than 11kpc has been proposed.
Aims. We aim to obtain the orbital ephemeris, the orbital period of the system, as well as its derivative to compare the observed luminosity with that predicted by the theory of secular evolution.
Methods. We took the advantage of about 26yrs of X-ray data and grouped the selected observations when close in time. We folded the light curves and used the timing technique, obtaining 12 dip arrival times. We fit the delays of the dip arrival times both with a linear and a quadratic function.
Results. We locate 4U 1323-619 within a circular area centred at RA(J2000)=201.6543° and Dec(J2000)=-62.1358° with an associated error of 0.0002°, and confirm the detection of the IR counterpart already discussed in literature. We estimate an orbital period of P=2.9419156(6) h compatible with the estimations that are present in the literature, but with an accuracy ten times higher. We also obtain a constraint on the orbital period derivative for the first time, estimating P=(8±13)x10–12s/s. Assuming that the companion star is in thermal equilibrium in the lower main sequence, and is a neutron star of 1.4M☉, we infer a mass of 0.28±0.03M☉ for the companion star. Assuming a distance of 10kpc, we obtained a luminosity of (4.3±0.5)x1036erg/s, which is not in agreement with what is predicted by the theory of secular evolution. Using a 3D extinction map of the Ks radiation in our Galaxy, we obtain a distance of 4.2+0.8–0.7kpc at 68% confidence level. This distance implies a luminosity estimation of (0.8±0.3)x1036erg/s, which is consistent with the adopted scenario in which the companion star is in thermal equilibrium.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: neutron - X-rays: binaries - X-rays: stars - ephemerides - stars: individual: 4U 1323-619

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 4U 1323-62 LXB 13 26 37.0 -62 08 09           ~ 181 0

Query : 2016A&A...589A..34G

Basic data :
4U 1323-62 -- Low Mass X-ray Binary
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		X (4U,3A,...), LXB (2013ApJS), N*? (2007ApJS), gam (INTREF), IR ([ZRS2010])
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		13 26 37.0 -62 08 09 (X-ray) [ 600 600 0 ] D 2016A&A...589A..34G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		13 23 17.7 -61 52 34 [ 600 600 0 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		307.0299 +00.4557 [ 600 600 0 ]
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (1) :
K 18.12 [0.20] D 2010MNRAS.401L...1Z
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!). sed-help-icon

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (18) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

4U 1323-62 INTREF 561 3U 1320-61 [LCN2002] 3
3A 1322-616 1M 1320-617 4U 1323-619 [PGV89] D
2E 3048 PBC J1326.4-6207 XB 1323-619 [ZRS2010] B
2E 1323.2-6152 SWIFT J1326.9-6207 XB 1323-62
GPS 1324-620 SWIFT J1326.2-6207 [KRL2007b] 140

References (181 between 1850 and 2024) (Total 181)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


distance : 1   

   

Observing logs


XMM : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : 4U 1323-62

Link by name to the catalogue in VizieR :

2E 3048

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