M33SyS J013449.50+304736.9

CONFIRMED M33  

Equatorial coordinates
α =  23.706221 | 01 34 49.493000
δ =  30.793642 | +30 47 37.110000
 
Constellation Triangulum
Symbiotic IR Type  
Spectral Type CN
Magnitude range (V)  
Outbursts  

Identifiers

M33SyS J013449.50+304736.9 GSC TYC WRAY
SIMBAD M33SyS J013449.50+304736.9 HIP SAO Hen
BD – IRAS  GAIA DR2  ESO
HD 2MASS  WISE  AAVSO

Position

Right ascension (°) 23.706221ref Parallax (mas) Reddening E(B-V) (mag) 0.041 ± 0.002ref
Declination (°) 30.793642ref Distance (kpc) 847.00 ± 60.00ref    
Galactic longitude (°) 133.820779ref Proper motion in α (mas/yr)    
Galactic latitude (°) -31.159087ref Proper motion in δ (mas/yr)    

Observations

U (mag) 22.86ref X-Ray   Flickering  
B (mag) 23.19ref X-Ray type   Outbursts No
V (mag) 21.48ref IUE No Type  
R (mag) 20.30ref IRAS flux at 12 μm (Jy)   IPmax (eV) 54.4ref
I (mag) 19.46ref IRAS flux at 25 μm (Jy)   OVI lines Noref
G (mag)   IRAS flux at 60 μm (Jy)      
J (mag)   IRAS flux at 100 μm (Jy)      
H (mag)   WISE W1 (mag)      
K (mag)   WISE W2 (mag)      
L (mag)   WISE W3 (mag)      
    WISE W4 (mag)      
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days) >500ref 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 CNref Mass (M)   Pulsation Yesref
Eff. temperature (K)   Radius (R)   Type Low-amplitude SR pulsationsref
IR type   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)   Radius (R)   Accretion disk  
Lower limit (K) 54000ref Luminosity (L)      
Upper limit (K) 144000ref        

Links

SIMBAD     CDS Portal


Notes

Its light curve can be a combination of the low-amplitude SR pulsations of the giant and orbitally related changes with a longer period. (Mikołajewska et al., 2017).


References

  • Mikołajewska, J., Shara, M. M., Caldwell, N., et al., 2017, MNRAS, 465, 699, 2017MNRAS.465.1699M

Last updated: Jan 13, 2019 @ 1:02 pm