New Online Database of Symbiotic Variables: M31SyS J004421.89+415125.6

CONFIRMED M31

Constellation
Andromeda

Equatorial coordinates
α = 00 44 21.891
δ = +41 51 25.650

Galactic coordinates
l = 121.5213°
b = -20.9953°

Suspected	2014^Ref
Confirmed	2014^Ref
Symbiotic IR type	D^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

M31SyS J004421.89+415125.6	IRAS -	GSC2.4.2 NBW9012704	AAVSO -
SIMBAD [SCM2012b] HII177	Pan-STARRS 158220110911399133	SAO -	VSX -
GAIA DR3 -	SkyMapper -	WRAY -	GCVS -
2MASS J00442178+4151233	HIP -	Hen -	BD -
WISE -	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	-
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	M31 SySt-28 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	11.0912^Ref	Parallax (mas)	-	Reddening E(B-V) (mag)	0.3±0.04^Ref ^{, Note}
Declination (°)	41.8571^Ref	Distance (kpc)	785±25^Ref -^{, Note}
Galactic longitude (°)	121.5213^Ref	Proper motion in α (mas/yr)	-
Galactic latitude (°)	-20.9953^Ref	Proper motion in δ (mas/yr)	-

Observations

X-Ray	No^Ref	IR type	D^Ref	Radio	-
X-Ray type	-	J (mag)	-	Flickering	-
GALEX FUV (mag)	-	H (mag)	-	Outbursts	-
GALEX NUV (mag)	-	K (mag)	-	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	-	Jets	-
FUSE	No^Ref	WISE W2 (mag)	-	Resolved nebula	-
U (mag)	20.41^Ref	WISE W3 (mag)	-	IPmax (eV)	54.4^Ref
B (mag)	21.25^Ref	WISE W4 (mag)	-	[O III] lines	Yes^Ref
V (mag)	21.27^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	19.91^Ref	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	-	IRAS 100μm (Jy)	-
G (mag)	-	AKARI S09 (Jy)	-
RP (mag)	-	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	-	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	M^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	low-amplitude SR?^Ref
IR type	D^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	~80?^Ref
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)	54000^Ref
Upper limit (K)	100000^Ref

Links

SIMBAD CDS Portal

Notes

Vilardell et al. (2006) report a variable star, M31V J00442188+4151255, coinciding with the position of the symbiotic star within ∼0.1 arcsec. This variable star shows low-amplitude variability with a period P ∼80 days, which is most likely due to SR pulsations of the red giant. This would then indicate that M31SyS J004421.89+415125.6 is not a D-type symbiotic star, as suggested by its position in the [O III] diagram (Mikołajewska et al., 2014).

References

Mikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 1, 586, 2014MNRAS.444..586M
Vilardell, F., Ribas, I., Jordi, C., 2006, A&A, 459, 1, 321, 2006A&A...459..321V

M31SyS J004421.89+415125.6