IRAS 18004-2748

LIKELY MILKY WAY
 
Constellation
Sagittarius
Equatorial coordinates
α = 18 03 31.204
δ = -27 48 26.996
Galactic coordinates
l = 2.9647°
b = -2.8271°

Suspected 2013Ref
Confirmed -
Symbiotic IR type D'?Ref
Hot component type -
Outbursts -

Identifiers

IRAS 18004-2748 IRAS 18004-2748 GSC2.4.2 S9TK222687 AAVSO -
SIMBAD IRAS 18004-2748 Pan-STARRS 74632708800391275 SAO - VSX 306012
GAIA DR3 4062906437810103040 SkyMapper - WRAY - GCVS -
2MASS J18033120-2748270 HIP - Hen - BD -
WISE J180331.21-274826.9 TYC - ESO - HD -

Symbiotic Catalogs

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

Position

Right ascension (°) 270.8800Ref Parallax (mas) -0.720±0.385Ref Reddening E(B-V) (mag) 0.76±0.02Ref, Note
Declination (°) -27.8075Ref Distance (kpc) 6.79Ref, Note, 5.11Ref, Note    
Galactic longitude (°) 2.9647Ref Proper motion in α (mas/yr) -7.45±0.36Ref    
Galactic latitude (°) -2.8271Ref Proper motion in δ (mas/yr) -4.85±0.22Ref    

Observations

X-Ray - IR type D'?Ref Radio -
X-Ray type - J (mag) 13.76Ref Flickering -
GALEX FUV (mag) - H (mag) 12.72Ref Outbursts -
GALEX NUV (mag) - K (mag) 10.56Ref Outburst type -
IUE NoRef WISE W1 (mag) 7.68Ref Jets -
FUSE NoRef WISE W2 (mag) 5.99Ref Resolved nebula YesRef
U (mag) - WISE W3 (mag) 3.68Ref IPmax (eV) 35.1Ref
B (mag) - WISE W4 (mag) 1.85Ref [O III] lines YesRef
V (mag) - IRAS 12μm (Jy) 1.94Ref He II lines NoRef
R (mag) - IRAS 25μm (Jy) 1.81Ref [Fe VII] lines NoRef
I (mag) - IRAS 60μm (Jy) 15.10Ref O VI lines NoRef
BP (mag) 18.47Ref IRAS 100μm (Jy) 106.00Ref
G (mag) 18.52Ref AKARI S09 (Jy) 1.10Ref
RP (mag) 16.94Ref AKARI S18 (Jy) 1.41Ref

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 - Radius (R) - Accretion disk -
Eff. temperature (K) - Luminosity (L) -    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

This star was initially classified as a B[e] star; however, the presence of a bipolar nebula hints at the possibility of it being a symbiotic B[e] star. Additionally, its slow variability suggests a potential classification as a D-type symbiotic star (Miszalski et al., 2013).


References

  • Miszalski, B., Mikołajewska, J., Udalski, A., 2013, MNRAS, 432, 4, 3186, 2013MNRAS.432.3186M


Last updated: November 5, 2019