M31SyS J004421.89+415125.6

CONFIRMED M31  

Equatorial coordinates
α =  11.091210 | 00 44 21.890000
δ =  41.857110 | +41 51 25.600000
 
Constellation Andromeda
Symbiotic IR Type D
Spectral Type M
Magnitude range (V)  
Outbursts No

Identifiers

M31SyS J004421.89+415125.6 GSC TYC WRAY
SIMBAD [SCM2012b] HII177 HIP SAO Hen
BD – IRAS  GAIA DR2  ESO
HD 2MASS  WISE  AAVSO

Position

Right ascension (°) 11.091210ref  Parallax (mas) Reddening E(B-V) (mag) 0.300 ± 0.044ref
Declination (°) 41.857110ref Distance (kpc) 785.00 ± 25.00ref    
Galactic longitude (°) 121.521320ref Proper motion in α (mas/yr)    
Galactic latitude (°) -20.995270ref Proper motion in δ (mas/yr)    

Observations

U (mag) 20.41ref X-Ray   Flickering  
B (mag) 21.25ref X-Ray type   Outbursts No
V (mag) 21.27ref IUE No Type  
R (mag)   IRAS flux at 12 μm (Jy)   IPmax (eV) 54.4ref
I (mag) 19.91ref 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)   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 Mref Mass (M)   Pulsation Yesref
Eff. temperature (K)   Radius (R)   Type Low-amplitude SR pulsations?ref
IR type D?ref Luminosity (L)   Pulsation period (days) ∼80?ref
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) 100000ref        

Links

SIMBAD     CDS Portal


Notes

Vilardell et al. (2006) report a variable star, M31V J00442188+4151255, coinciding with the position of the SySt within ∼0.1 arcsec, with low-amplitude variability with P ∼80 d which is most likely due to SR pulsations of the red giant. This would then indicate that M31SyS J004421.89+415125.6 is not a D-type SySt as suggested by its position in the [O III] diagram (Mikołajewska et al., 2014).


References

Last updated: Jan 12, 2019 @ 4:10 pm