LIN 9

CONFIRMED SMC  

Equatorial coordinates
α =  7.530781 ± 0.031503 | 00 30 07.385688
δ =  -73.621971 ± 0.026315 | -73 37 19.082127
 
Constellation Tucana
Symbiotic IR Type S🡕
Spectral Type K5
Magnitude range (V) 14.8-16.3ref
Outbursts Z And

Identifiers

LIN 9 GSC TYC WRAY
SIMBAD LIN 9 HIP SAO Hen
BD – IRAS  GAIA DR2 4688455814367629440 ESO
HD 2MASS J00300739-7337190 WISE J003007.39-733718.9 AAVSO 000-BMM-714

Position

Right ascension (°) 7.530781 ± 0.031503ref  Parallax (mas) Reddening E(B-V) (mag) 0.036 ± 0.002ref
Declination (°) -73.621971 ± 0.026315ref Distance (kpc) 62.10 ± 1.90ref    
Galactic longitude (°) 304.998090 ± 0.026315ref Proper motion in α (mas/yr) 0.460236 ± 0.058336ref    
Galactic latitude (°) -43.420669 ± 0.031503ref Proper motion in δ (mas/yr) -0.925735 ± 0.052193ref    

Observations

U (mag) 17.71ref X-Ray   Flickering  
B (mag) 17.44ref X-Ray type   Outbursts Yesref
V (mag) 15.91ref IUE No Type Z Andref
R (mag)   IRAS flux at 12 μm (Jy)   IPmax (eV) 114.0ref
I (mag) 14.29ref IRAS flux at 25 μm (Jy)   OVI lines Yesref
G (mag) 15.51ref IRAS flux at 60 μm (Jy)      
J (mag) 13.29ref IRAS flux at 100 μm (Jy)      
H (mag) 12.44ref WISE W1 (mag) 12.14ref    
K (mag) 12.27ref WISE W2 (mag) 12.17ref    
L (mag)   WISE W3 (mag) 12.15ref    
    WISE W4 (mag) 8.90ref    
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days) ∼500-600?ref γ velocity (km/h)   Size of giant’s orbit (AU)  
Eccentricity   RV of giant (km/h)   Separation (AU)  
Inclination (°)   Inferior conj. of giant (JD)   Mass function  
Ephemeris type       Mass ratio  
Ephemeris T(JD)          

Cool component

Spectral type K5ref Mass (M)   Pulsation  
Eff. temperature (K) 3900ref
3810ref
Radius (R) 126ref Type  
IR type S🡕, ref Luminosity (L) 3311ref Pulsation period (days)  
Metallicity [Fe/H] -1ref     Ephemeris type  
        Ephemeris T(JD)  

Hot component

Type/Spectra   Mass (M)   Spin period (min)  
Eff. temperature (K)   Radius (R)   Accretion disk  
Lower limit (K) 114000ref Luminosity (L) 225-3165ref    
Upper limit (K) 170000ref        

Links

SIMBAD     CDS Portal     VSX


Notes

An optical spectrum of LIN 9 taken at quiescence reveals a K5 red giant with emission lines confirming its symbiotic star nature. It is the first Magellanic symbiotic star proven to show Z And outbursts. At outburst, the estimated hot component luminosity is 3165 L, compared to 225 L at quiescence (Miszalski et al., 2014).


References

Last updated: May 2, 2019 @ 11:01 am