IRAS 16468-4737

LIKELY MILKY WAY
 
Constellation
Ara
Equatorial coordinates
α = 16 50 32.298
δ = -47 42 28.910
Galactic coordinates
l = 338.5095°
b = -2.0533°

Suspected 2014Ref
Confirmed -
Symbiotic IR type D?Ref
Hot component type shell-burning?Ref
Outbursts -

Identifiers

IRAS 16468-4737 IRAS 16468-4737 GSC2.4.2 S8Q5081158 AAVSO -
SIMBAD IRAS 16468-4737 Pan-STARRS - SAO - VSX -
GAIA DR3 5939392802025441152 SkyMapper - WRAY - GCVS -
2MASS J16503229-4742288 HIP - Hen - BD -
WISE J165032.30-474228.9 TYC - ESO - HD -

Symbiotic Catalogs

Bidelman (1954) - Allen (1984) - Belzcyński et al. (2001) -
Gaposchkin (1957) - Kenyon (1986) - Akras et al. (2019) 2MASSJ16503229-4742288 (Susp.)
Boyarchuk (1969) - Vaidis (1988, 1991) -

Position

Right ascension (°) 252.6346Ref Parallax (mas) 0.142±0.181Ref Reddening E(B-V) (mag) 3.22±0.2Ref, Note
Declination (°) -47.7080Ref Distance (kpc) 6.37Ref, Note, 3.96Ref, Note    
Galactic longitude (°) 338.5095Ref Proper motion in α (mas/yr) 0.54±0.25Ref    
Galactic latitude (°) -2.0533Ref Proper motion in δ (mas/yr) -1.55±0.19Ref    

Observations

X-Ray - IR type D?Ref Radio -
X-Ray type - J (mag) 13.99Ref Flickering -
GALEX FUV (mag) - H (mag) 11.55Ref Outbursts -
GALEX NUV (mag) - K (mag) 9.48Ref Outburst type -
IUE NoRef WISE W1 (mag) 7.08Ref Jets -
FUSE NoRef WISE W2 (mag) 5.57Ref Resolved nebula -
U (mag) - WISE W3 (mag) 3.23Ref IPmax (eV) 35.1Ref
B (mag) - WISE W4 (mag) 1.52Ref [O III] lines YesRef
V (mag) - IRAS 12μm (Jy) 1.82Ref He II lines NoRef
R (mag) - IRAS 25μm (Jy) 2.36Ref [Fe VII] lines NoRef
I (mag) - IRAS 60μm (Jy) 15.00Ref O VI lines NoRef
BP (mag) 19.38Ref IRAS 100μm (Jy) 235.00Ref
G (mag) 18.54Ref AKARI S09 (Jy) 1.64Ref
RP (mag) 17.39Ref AKARI S18 (Jy) 1.94Ref

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 -
Eclipses -     Mass ratio -
Orbital ephemeris -        

Cool component

Spectral type - Mass (M) - Pulsation -
Eff. temperature (K) - Radius (R) - Type -
IR type D?Ref Luminosity (L) - Pulsation period (days) -
Metallicity [Fe/H] -     Pulsation ephemeris -

Hot component

Type/Spectral type - Mass (M) - Spin period (min) -
Shell-burning/Accreting-only shell-burning?Ref Radius (R) - Accretion disk -
Eff. temperature (K) - Luminosity (L) -    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

Suspected by Miszalski & Mikołajewska (2014) based on a PN-like spectrum and red 2MASS colours typical of D-type symbiotic stars (J-H and H-K are both >= 2.0). The red giant is not seen in the optical spectra. Alternatively, it might be a PN with a dusty WR central star. The study also noted that these typically have temperatures of 30kK and are unable to ionize the [Ar IV] and [Ar V] emission lines observed, which are more common in D-type symbiotic stars than in PNe.


References


Last updated: November 20, 2019