V399 Pav

CONFIRMED MILKY WAY
 
Constellation
Pavo
Equatorial coordinates
α = 19 42 25.386
δ = -68 07 35.449
Galactic coordinates
l = 327.6762°
b = -29.7564°

Suspected 1954Ref
Confirmed 1954Ref
Symbiotic IR type SRef
Hot component type shell-burningRef
Outbursts YesRef - Z AndRef

Identifiers

V399 Pav IRAS 19373-6814 GSC2.4.2 SAY9000298 AAVSO 000-BFR-535
SIMBAD V* V399 Pav Pan-STARRS - SAO - VSX 137488
GAIA DR3 6426947387671107712 SkyMapper 194225.37-680735.3 WRAY - GCVS V0399 Pav
2MASS J19422537-6807353 HIP - Hen 3-1761 BD -
WISE J194225.31-680735.4 TYC 9306-803-1 ESO - HD -

Symbiotic Catalogs

Bidelman (1954) - Allen (1984) Hen 1761 (Conf.) Belzcyński et al. (2001) Hen 3-1761 (Conf.)
Gaposchkin (1957) Des. 193768 (Conf.) Kenyon (1986) Hen 1761 (Conf.) Akras et al. (2019) Hen 3-1761 (Conf.)
Boyarchuk (1969) My 129 (Conf.) Vaidis (1988, 1991) NSV 12264 (Conf.)

Position

Right ascension (°) 295.6058Ref Parallax (mas) 0.285±0.043Ref Reddening E(B-V) (mag) 0.08±0.0Ref, Note
Declination (°) -68.1265Ref Distance (kpc) 3.71Ref
3.24Ref, Note, 3.19Ref, Note
   
Galactic longitude (°) 327.6762Ref Proper motion in α (mas/yr) 0.54±0.03Ref    
Galactic latitude (°) -29.7564Ref Proper motion in δ (mas/yr) -6.85±0.04Ref    

Observations

X-Ray NoRef IR type SRef Radio NoRef
X-Ray type - J (mag) 6.68Ref Flickering NoRef
GALEX FUV (mag) 13.81Ref H (mag) 5.80Ref Outbursts YesRef
GALEX NUV (mag) 14.66Ref K (mag) 5.45Ref Outburst type Z AndRef
IUE YesRef WISE W1 (mag) 5.33Ref Jets -
FUSE NoRef WISE W2 (mag) 5.29Ref Resolved nebula -
U (mag) - WISE W3 (mag) 5.08Ref IPmax (eV) 99Ref
B (mag) 12.63Ref WISE W4 (mag) 4.64Ref [O III] lines YesRef
V (mag) 11.37Ref IRAS 12μm (Jy) 0.42Ref He II lines YesRef
R (mag) - IRAS 25μm (Jy) 0.27Ref [Fe VII] lines YesRef
I (mag) - IRAS 60μm (Jy) 0.40Ref O VI lines NoRef
BP (mag) 11.46Ref IRAS 100μm (Jy) 1.25Ref
G (mag) 9.92Ref AKARI S09 (Jy) 0.45Ref
RP (mag) 8.69Ref AKARI S18 (Jy) 0.15Ref

Orbit

Orbital period (days) 560Ref, 559±27Ref γ velocity (km/h) 54.9±0.2Ref, 58.26±1.14Ref Size of giant’s orbit (AU) 0.37Ref
Eccentricity 0.05±0.04Ref RV of giant (km/h) 7.3±0.4Ref Separation (AU) -
Inclination (°) - Inferior conj. of giant (JD) 2449384.18 Mass function 0.022Ref
Eclipses -     Mass ratio -
Orbital ephemeris -        

Cool component

Spectral type M5 IIIRef, M5.5 IIIRef Mass (M) - Pulsation YesRef
Eff. temperature (K) 3300Ref Radius (R) - Type SRRef
IR type SRef Luminosity (L) - Pulsation period (days) 63±1Ref
Metallicity [Fe/H] -0.25±0.08Ref     Pulsation ephemeris -

Hot component

Type/Spectral type WDRef Mass (M) - Spin period (min) -
Shell-burning/Accreting-only shell-burningRef Radius (R) 0.01-0.05Ref Accretion disk -
Eff. temperature (K) 97000-142000Ref, 90000-160000Ref Luminosity (L) 3700-8700Ref, 70-200Ref    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal   ARAS Database


Notes

Identified as a star with a peculiar spectrum according to observations by Mayall (1951). Subsequent spectroscopic analysis in Thackeray (1954) suggested the symbiotic nature of the object, characterized by the presence of TiO bands and strong emission lines. Optical spectrum revealed emission lines with ionization potential up to 99 eV (Brandi et al., 1998), and N V is visible in the UV spectrum (Gutiérrez-Moreno et al., 1997).


References


Last updated: January 13, 2024