New Online Database of Symbiotic Variables: V1044 Cen

Constellation
Centaurus

Equatorial coordinates
α = 13 16 01.368
δ = -37 00 10.787

Galactic coordinates
l = 308.3728°
b = 25.6089°

Suspected	1972^Ref
Confirmed	1976^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref, accreting-only^Ref
Outbursts	-

Identifiers

V1044 Cen	IRAS 13131-3644	GSC2.4.2 S98Y000685	AAVSO 000-BCV-364
SIMBAD V* V1044 Cen	Pan-STARRS -	SAO -	VSX 8341
GAIA DR3 6165818495673620352	SkyMapper 131601.38-370010.7	WRAY -	GCVS V1044 Cen
2MASS J13160138-3700107	HIP -	Hen 3-886	BD -
WISE J131601.37-370010.7	TYC 7275-1500-1	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	CD-36.8436 (Susp.)	Belzcyński et al. (2001)	CD-36 8436 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	CD-36°8436 (Susp.)	Akras et al. (2019)	CD-36 8436 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	NSV 6160 (Conf.)

Position

Right ascension (°)	199.0057^Ref	Parallax (mas)	0.425±0.051^Ref	Reddening E(B-V) (mag)	0.05±0.0^Ref ^{, Note}
Declination (°)	-37.0030^Ref	Distance (kpc)	1.8-3.8^Ref 2.26^Ref ^{, Note}, 2.14^Ref ^{, Note}
Galactic longitude (°)	308.3728^Ref	Proper motion in α (mas/yr)	-5.91±0.06^Ref
Galactic latitude (°)	25.6089^Ref	Proper motion in δ (mas/yr)	-0.85±0.04^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	No^Ref
X-Ray type	-	J (mag)	6.59^Ref	Flickering	Yes?^Ref
GALEX FUV (mag)	-	H (mag)	5.71^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	5.35^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	5.22^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	5.13^Ref	Resolved nebula	No^Ref
U (mag)	-	WISE W3 (mag)	5.02^Ref	IPmax (eV)	54.4^Ref
B (mag)	12.04^Ref	WISE W4 (mag)	4.79^Ref	[O III] lines	Yes^Ref
V (mag)	11.18^Ref	IRAS 12μm (Jy)	0.40^Ref	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	0.25^Ref	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	0.40^Ref	O VI lines	No^Ref
BP (mag)	11.19^Ref	IRAS 100μm (Jy)	1.00^Ref
G (mag)	9.82^Ref	AKARI S09 (Jy)	0.54^Ref
RP (mag)	8.60^Ref	AKARI S18 (Jy)	0.16^Ref

Orbit

Orbital period (days)	985±5.4^Ref	γ velocity (km/h)	-50.88±0.18^Ref, -47.91±1.59^Ref	Size of giant’s orbit (AU)	0.391^Ref
Eccentricity	0.158±0.057^Ref	RV of giant (km/h)	4.39±0.25^Ref	Separation (AU)	-
Inclination (°)	-	Inferior conj. of giant (JD)	2454219.2	Mass function	0.0083^Ref
Eclipses	-			Mass ratio	-
Orbital ephemeris	-

Cool component

Spectral type	M5.5 III^Ref, M6 III^Ref	Mass (M_⊙)	1.5^Ref	Pulsation	-
Eff. temperature (K)	3425^Ref, 3300^Ref	Radius (R_⊙)	144^Ref, 112-192^Ref	Type	-
IR type	S^Ref	Luminosity (L_⊙)	4640^Ref	Pulsation period (days)	-
Metallicity [Fe/H]	-0.3±0.07^Ref			Pulsation ephemeris	-

Hot component

Type/Spectral type	-	Mass (M_⊙)	-	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref, accreting-only^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	86000^Ref	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal ARAS Database

Notes

Listed among symbiotic stars in the compilation by Swings & Allen (1972). X-ray emission was previously associated with it; however, Lima et al. (2024) argued that the X-ray emission likely originates from a neighboring source instead.

References

Allen, D. A., 1984, PASA, 5, 3, 369, 1984PASA....5..369A
Fekel, F. C., Hinkle, K. H., Joyce, R. R. et al., 2015, AJ, 150, 2, 48, 2015AJ....150...48F
Gałan, C., Mikołajewska, J., Hinkle, K. H. et al., 2016, MNRAS, 455, 2, 1282, 2016MNRAS.455.1282G
Gutiérrez-Moreno, A., Moreno, H., Cortes, G., 1992, PASP, 104, 1187, 1992PASP..104.1187G
Henize, K. G., 1976, ApJS, 30, 491, 1976ApJS...30..491H
Lima, I. J., Mattiuci, A. C., Luna, G. J. M. et al., 2024, NewA, 107, 102145, 2024NewA..10702145L
Mürset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M
Swings, J. P., Allen, D. A., 1972, PASP, 84, 500, 523, 1972PASP...84..523S

V1044 Cen