SMP LMC 88

CONFIRMED LMC  

Equatorial coordinates
α =  85.638304 ± | 05 42 33.193000
δ =  -70.490022 ± |-70 29 24.080000
 
Constellation Mensa
Symbiotic IR Type D’/S+IR🡕
Spectral Type K
Magnitude range (V)  
Outbursts No

Identifiers

SMP LMC 88 GSC TYC WRAY
SIMBAD SMP LMC 88 HIP SAO Hen
BD – IRAS  GAIA DR2  ESO
HD 2MASS J05423319-7029240 WISE J054233.25-702924.0 AAVSO

Position

Right ascension (°) 85.638304ref Parallax (mas) Reddening E(B-V) (mag) 0.634 ± 0.073ref
Declination (°) -70.490022ref Distance (kpc) 49.97 ± 0.19ref    
Galactic longitude (°) 281.038611ref Proper motion in α (mas/yr)    
Galactic latitude (°) -31.184863ref Proper motion in δ (mas/yr)    

Observations

U (mag) 17.12ref X-Ray   Flickering  
B (mag) 17.34ref X-Ray type   Outbursts No
V (mag) 16.81ref IUE Yes Type  
R (mag) 16.26ref IRAS flux at 12 μm (Jy)   IPmax (eV) 114.0ref
I (mag) 16.23ref IRAS flux at 25 μm (Jy)   OVI lines Yesref
G (mag)   IRAS flux at 60 μm (Jy)      
J (mag) 15.34ref IRAS flux at 100 μm (Jy)      
H (mag) 14.74ref WISE W1 (mag) 13.53ref    
K (mag) 14.33ref WISE W2 (mag) 12.80ref    
L (mag)   WISE W3 (mag) 10.59ref    
    WISE W4 (mag) 7.62ref    
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days) ∼4900ref 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 Kref Mass (M)   Pulsation  
Eff. temperature (K) 3782ref Radius (R)   Type  
IR type D’ref
S+IR🡕, 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

Raman scattered O VI lines in SMP LMC 88 was identified, which shows that the system is a SySt. Cold component is a K-type giant, which means that the system is as a yellow D’-type SySt. The fact that the nebula around a yellow D’-type SySt, opposite to the nebulae around D-type SySt, is an actual PN (i.e. a fossil AGB remnant) makes the central binary of SMP LMC 88 a central binary of a PN (Iłkiewicz et al., 2018). Akras et al. (2019) classified the system as a S+IR type.


References

  • Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
  • Iłkiewicz, K., Mikołajewska, J., Miszalski, B., et al., 2018, MNRAS, 476, 2605, 2018MNRAS.476.2605I

Last updated: May 2, 2019 @ 11:30 am