SMC1

CONFIRMED SMC  

Equatorial coordinates
α =  7.295121 ± 0.034151 | 00 29 10.827434
δ =  -74.961079 ± 0.027650 | -74 57 39.865827
 
Constellation Hydrus
Symbiotic IR Type S🡕
Spectral Type C3.2
Magnitude range (V)  
Outbursts No

Identifiers

SMC1 GSC TYC WRAY
SIMBAD NAME SMC Symbiotic star 1 HIP SAO Hen
BD – IRAS  GAIA DR2 4685137110311670784 ESO
HD 2MASS J00291086-7457398 WISE J002910.82-745739.8 AAVSO 000-BLT-627

Position

Right ascension (°) 7.295121 ± 0.034151ref  Parallax (mas) Reddening E(B-V) (mag) 0.040 ± 0.003ref
Declination (°) -74.961079 ± 0.027650ref Distance (kpc) 62.10 ± 1.90ref    
Galactic longitude (°) 304.874623 ± 0.027650ref Proper motion in α (mas/yr) 0.431226 ± 0.066098ref    
Galactic latitude (°) -42.083114 ± 0.034151ref Proper motion in δ (mas/yr) -1.277756 ± 0.050068ref    

Observations

U (mag)   X-Ray   Flickering  
B (mag)   X-Ray type   Outbursts No
V (mag) 16.20ref IUE Yes Type  
R (mag) 14.70ref IRAS flux at 12 μm (Jy)   IPmax (eV) 114.0ref
I (mag) 13.90ref IRAS flux at 25 μm (Jy)   OVI lines Yesref
G (mag) 15.87ref IRAS flux at 60 μm (Jy)      
J (mag) 13.65ref IRAS flux at 100 μm (Jy)      
H (mag) 12.85ref WISE W1 (mag) 12.41ref    
K (mag) 12.64ref WISE W2 (mag) 12.43ref    
L (mag)   WISE W3 (mag) 11.88ref    
    WISE W4 (mag) 9.07ref    
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days)   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 C3.2ref Mass (M)   Pulsation  
Eff. temperature (K) 3572ref Radius (R)   Type  
IR type S🡕, ref Luminosity (L)   Pulsation period (days)  
Metallicity [Fe/H]       Ephemeris type  
        Ephemeris T(JD)  

Hot component

Type/Spectra   Mass (M)   Spin period (min)  
Eff. temperature (K) 130000ref Radius (R)   Accretion disk  
Lower limit (K)   Luminosity (L) 700ref    
Upper limit (K)          

Links

SIMBAD     CDS Portal     VSX


Notes

The star has a rich hydrogen-helium emission-line spectrum superimposed on a carbon star continuum.


References

Last updated: May 2, 2019 @ 11:27 am