V422 Cen

LIKELY MILKY WAY
 
Constellation
Centaurus
Equatorial coordinates
α = 11 51 51.923
δ = -42 27 51.232
Galactic coordinates
l = 291.3596°
b = 19.0649°

Suspected 2023Ref
Confirmed -
Symbiotic IR type -
Hot component type B?Ref
Outbursts -

Identifiers

V422 Cen IRAS 11493-4211 GSC2.4.2 S55A000421 AAVSO -
SIMBAD V* V422 Cen Pan-STARRS - SAO - VSX 7719
GAIA DR3 5380038285951640832 SkyMapper 115151.94-422751.3 WRAY - GCVS V0422 Cen
2MASS J11515196-4227514 HIP - Hen - BD -
WISE J115151.95-422751.3 TYC 7750-903-1 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 (°) 177.9664Ref Parallax (mas) 0.914±0.045Ref Reddening E(B-V) (mag) 0.16±0.0Ref, Note
Declination (°) -42.4642Ref Distance (kpc) 1.06Ref, Note, 1.06Ref, Note    
Galactic longitude (°) 291.3596Ref Proper motion in α (mas/yr) -24.68±0.04Ref    
Galactic latitude (°) 19.0649Ref Proper motion in δ (mas/yr) 4.69±0.04Ref    

Observations

X-Ray - IR type - Radio -
X-Ray type - J (mag) 4.39Ref Flickering -
GALEX FUV (mag) 16.34Ref H (mag) 3.33Ref Outbursts -
GALEX NUV (mag) 16.48Ref K (mag) 2.94Ref Outburst type -
IUE NoRef WISE W1 (mag) 1.44Ref Jets -
FUSE NoRef WISE W2 (mag) 1.40Ref Resolved nebula -
U (mag) - WISE W3 (mag) 2.20Ref IPmax (eV) 35.1?Ref
B (mag) 12.08Ref WISE W4 (mag) 1.94Ref [O III] lines YesRef
V (mag) 10.39Ref IRAS 12μm (Jy) 5.53Ref He II lines -
R (mag) - IRAS 25μm (Jy) 1.71Ref [Fe VII] lines -
I (mag) - IRAS 60μm (Jy) 0.40Ref O VI lines -
BP (mag) 10.60Ref IRAS 100μm (Jy) 1.34Ref
G (mag) 8.02Ref AKARI S09 (Jy) 6.82Ref
RP (mag) 6.56Ref AKARI S18 (Jy) 1.95Ref

Orbit

Orbital period (days) - γ velocity (km/h) 37.54±0.34Ref 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 M4Ref Mass (M) - Pulsation -
Eff. temperature (K) - Radius (R) - Type -
IR type - Luminosity (L) - Pulsation period (days) -
Metallicity [Fe/H] -     Pulsation ephemeris -

Hot component

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

Links

SIMBAD   CDS Portal


Notes

Suspected of having a symbiotic nature by Akras (2023). The authors employed a combination of GALEX UV photometry, 2MASS/WISE IR photometry, and the ASAS-SN variables catalog to select the candidates. In SIMBAD, it is classified as a Mira variable with a reference to GCVS, where it is labeled as an SRb variable. Additionally, it appears in the list of dwarf novae (Echevarria, 1987; Spogli & Fiorucci, 2003; Godon et al., 2009), but there might be some confusion with V442 Cen. For instance, Godon et al. (2009) references a paper from Sion et al. (2008) that studied V442 Cen. In Bidelman (1988), [O III] and H I emission with TiO in absorption were reported.


References


Last updated: January 31, 2023