New Online Database of Symbiotic Variables: 47 Tuc Src-No. 568

Constellation
Tucana

Equatorial coordinates
α = 00 25 57.538
δ = -72 07 52.813

Galactic coordinates
l = 305.6846°
b = -44.8605°

Suspected	2021^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	shell-burning?^Ref
Outbursts	-

Identifiers

47 Tuc Src-No. 568	IRAS -	GSC2.4.2 S0W5000460	AAVSO -
SIMBAD 2MASS J00255751-7207529	Pan-STARRS -	SAO -	VSX -
GAIA DR3 4689629371238695552	SkyMapper 002557.52-720752.7	WRAY -	GCVS -
2MASS J00255751-7207529	HIP -	Hen -	BD -
WISE J002557.52-720752.8	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 (°)	6.4897^Ref	Parallax (mas)	0.226±0.011^Ref	Reddening E(B-V) (mag)	0.03±0.0^Ref ^{, Note}
Declination (°)	-72.1313^Ref	Distance (kpc)	4.40^Ref ^{, Note}, 4.52^Ref ^{, Note}
Galactic longitude (°)	305.6846^Ref	Proper motion in α (mas/yr)	5.66±0.01^Ref
Galactic latitude (°)	-44.8605^Ref	Proper motion in δ (mas/yr)	-2.56±0.01^Ref

Observations

X-Ray	Yes^Ref	IR type	S?^Ref	Radio	-
X-Ray type	β^Ref	J (mag)	10.42^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	9.71^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	9.58^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	9.47^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	9.61^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	9.47^Ref	IPmax (eV)	-
B (mag)	13.97^Ref	WISE W4 (mag)	8.53^Ref	[O III] lines	-
V (mag)	12.75^Ref	IRAS 12μm (Jy)	-	He II lines	-
R (mag)	12.53^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	-
I (mag)	11.41^Ref	IRAS 60μm (Jy)	-	O VI lines	-
BP (mag)	13.05^Ref	IRAS 100μm (Jy)	-
G (mag)	12.35^Ref	AKARI S09 (Jy)	-
RP (mag)	11.54^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	-17.21±0.51^Ref	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	S?^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 in the first version of the paper by Saeedi et al. (2021), based on X-ray detection by eROSITA and a possible RGB counterpart. However, it is not mentioned in the second version.

References

Saeedi, S., Liu, T., Knies, J. et al., 2021, arXiv, arXiv:2106.14535, 2021arXiv210614535S

47 Tuc Src-No. 568