New Online Database of Symbiotic Variables: LIN 521

SUSPECTED SMC

Constellation
Tucana

Equatorial coordinates
α = 01 18 35.708
δ = -72 42 21.422

Galactic coordinates
l = 300.1186°
b = -44.2737°

Suspected	1991^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	-
Outbursts	-

Identifiers

LIN 521	IRAS -	GSC2.4.2 S0XG223691	AAVSO 000-BJT-858
SIMBAD LIN 521	Pan-STARRS -	SAO -	VSX 241089
GAIA DR3 4687286621186701568	SkyMapper 011835.71-724221.3	WRAY -	GCVS -
2MASS J01183570-7242213	HIP -	Hen -	BD -
WISE J011835.70-724221.3	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	RAW 1691 (Susp.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	RAW 1691 (Susp.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	19.6488^Ref	Parallax (mas)	-0.015±0.023^Ref	Reddening E(B-V) (mag)	0.04±0.0^Ref ^{, Note}
Declination (°)	-72.7060^Ref	Distance (kpc)	62.1±1.9^Ref 16.58^Ref ^{, Note}, 20.38^Ref ^{, Note}
Galactic longitude (°)	300.1186^Ref	Proper motion in α (mas/yr)	0.67±0.03^Ref
Galactic latitude (°)	-44.2737^Ref	Proper motion in δ (mas/yr)	-1.24±0.03^Ref

Observations

X-Ray	No^Ref	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	12.77^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	11.75^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	11.34^Ref	Outburst type	-
IUE	Yes^Ref	WISE W1 (mag)	10.83^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	10.90^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	10.49^Ref	IPmax (eV)	13.6^Ref
B (mag)	16.50^Ref	WISE W4 (mag)	9.41^Ref	[O III] lines	No^Ref
V (mag)	15.97^Ref	IRAS 12μm (Jy)	-	He II lines	No^Ref
R (mag)	14.90^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	14.01^Ref	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	16.24^Ref	IRAS 100μm (Jy)	-
G (mag)	15.20^Ref	AKARI S09 (Jy)	-
RP (mag)	14.20^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	143.28±2.40^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	C^Ref	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	-	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

The star was initially classified as a probable symbiotic star in Westerlund et al. (1991). However, subsequent observations by van Winckel et al. (1993) did not confirm its symbiotic nature, and the star was instead classified as a carbon star.

References

Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L. et al., 2019, ApJS, 240, 2, 21, 2019ApJS..240...21A
Mürset, U., Wolff, B., Jordan, S., 1997, A&A, 319, 201, 1997A&A...319..201M
Phillips, J. P., 2007, MNRAS, 376, 3, 1120, 2007MNRAS.376.1120P
Westerlund, B. E., Azzopardi, M., Breysacher, J. et al., 1991, A&AS, 91, 425, 1991A&AS...91..425W
van Winckel, H., Duerbeck, H. W., Schwarz, H. E., 1993, A&AS, 102, 401, 1993A&AS..102..401V

LIN 521