LIN 254

CONFIRMED SMC  

Equatorial coordinates
α =  13.581472 ± 0.043242 | 00 54 19.550000
δ =  -72.486540 ± 0.033818 | -72 29 11.400000
 
Constellation Tucana
Symbiotic IR Type D’🡕
Spectral Type  
Magnitude range (V)  
Outbursts No

Identifiers

LIN 254 GSC TYC WRAY
SIMBAD LHA 115-S 19 HIP SAO Hen
BD – IRAS 00525-7245 GAIA DR2 4689004367645839488 ESO
HD 2MASS J00541954-7229113 WISE J005419.28-722909.5 AAVSO

Position

Right ascension (°) 13.581472 ± 0.043242ref  Parallax (mas) Reddening E(B-V) (mag) 0.273 ± 0.014ref
Declination (°) -72.486540 ± 0.033818ref Distance (kpc) 62.10 ± 1.90ref    
Galactic longitude (°) 302.626580 ± 0.033818ref Proper motion in α (mas/yr) 0.516253 ± 0.074000ref    
Galactic latitude (°) -44.640040 ± 0.043242ref Proper motion in δ (mas/yr) -1.477069 ± 0.066929ref    

Observations

U (mag)   X-Ray No? Flickering  
B (mag) 18.57ref X-Ray type   Outbursts No
V (mag) 18.27ref IUE No Type  
R (mag)   IRAS flux at 12 μm (Jy) <0.250ref IPmax (eV) 114.0ref
I (mag) 17.70ref IRAS flux at 25 μm (Jy) 0.701ref OVI lines Yesref
G (mag) 14.65ref IRAS flux at 60 μm (Jy) <1.38ref    
J (mag) 15.08ref IRAS flux at 100 μm (Jy) <6.48ref    
H (mag) 15.07ref WISE W1 (mag) 12.98ref    
K (mag) 14.95ref WISE W2 (mag) 11.57ref    
L (mag)   WISE W3 (mag) 6.23ref    
    WISE W4 (mag) 3.00ref    
    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   Mass (M)   Pulsation  
Eff. temperature (K) 3942ref Radius (R)   Type  
IR type D’🡕, 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)   Radius (R)   Accretion disk  
Lower limit (K)   Luminosity (L)      
Upper limit (K)          

Links

SIMBAD     CDS Portal


Notes

A symbiotic system, based on the presence of Raman emission at 6825 and 7082 Å and nebular emission lines, as well as prominent silicate emission (Oliveira et al., 2013). Akras et al. (2019) classified the systems as a D’ type, based on the modeling of its IR spectra.


References

  • Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
    Oliveira, J. M., van Loon, J. T., Sloan, G. C., et al.,
    2013, MNRAS, 428, 3001, 2013MNRAS.428.3001O

Last updated: May 2, 2019 @ 11:03 am