LMC N19

CONFIRMED LMC  

Equatorial coordinates
α =  75.848970 ± 0.045911 | 05 03 23.747701
δ =  -67.942676 ± 0.058870 | -67 56 33.634274
 
Constellation Dorado
Symbiotic IR Type S🡕
Spectral Type M4
Magnitude range (V)  
Outbursts Yes?

Identifiers

LMC N19 GSC TYC WRAY
SIMBAD LHA 120-N 19 HIP SAO Hen
BD – IRAS  GAIA DR2 4661451121631302784 ESO
HD 2MASS J05032373-6756335 WISE J050323.75-675633.3 AAVSO 000-BLT-632

Position

Right ascension (°) 75.848970 ± 0.045911ref  Parallax (mas) Reddening E(B-V) (mag) 0.276 ± 0.054ref
Declination (°) -67.942676 ± 0.058870ref  Distance (kpc) 49.97 ± 0.19ref    
Galactic longitude (°) 278.807211 ± 0.045911ref   Proper motion in α (mas/yr) 1.862407 ± 0.083188ref     
Galactic latitude (°) -35.057450 ± 0.058870ref  Proper motion in δ (mas/yr) 0.137780 ± 0.102639ref     

Observations

U (mag) 16.50ref X-Ray Noref Flickering  
B (mag)   X-Ray type   Outbursts Yes?ref 
V (mag) 16.40ref IUE No Type  
R (mag) 15.34ref IRAS flux at 12 μm (Jy)   IPmax (eV) 114.0ref 
I (mag) 14.27ref IRAS flux at 25 μm (Jy)   OVI lines Yesref 
G (mag) 15.50ref  IRAS flux at 60 μm (Jy)      
J (mag) 12.73ref IRAS flux at 100 μm (Jy)      
H (mag) 11.84ref WISE W1 (mag) 11.41ref    
K (mag) 11.53ref WISE W2 (mag) 11.43ref    
L (mag)   WISE W3 (mag) 11.31ref    
    WISE W4 (mag) 10.08ref    
    Radio 3.5 cmref    
    Radio flux (mJy) 0.066ref    

Orbit

Orbital period (days) 1012 ± 32ref 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 M4 IIIref Mass (M)   Pulsation Yesref
Eff. temperature (K) 3724ref Radius (R)   Type  
IR type S🡕, ref  Luminosity (L)   Pulsation period (days) 79 ± 1ref
Metallicity [Fe/H]       Ephemeris type Min(I)ref
        Ephemeris T(JD) 2456012 ± 1ref

Hot component

Type/Spectra   Mass (M)   Spin period (min)  
Eff. temperature (K) 180000ref Radius (R)   Accretion disk  
Lower limit (K)   Luminosity (L) 350ref    
Upper limit (K)          

Links

SIMBAD     CDS Portal    VSX


Notes

Typical symbiotic spectrum with an M4 giant and strong, high-excitation emission lines. No forbidden ones appeared (Angeloni et al., 2014). 


References

Last updated: May 2, 2019 @ 11:07 am