New Online Database of Symbiotic Variables: M31SyS J004216.70+404415.7

CONFIRMED M31

Constellation
Andromeda

Equatorial coordinates
α = 00 42 16.716
δ = +40 44 15.694

Galactic coordinates
l = 121.0595°
b = -22.1008°

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

Identifiers

M31SyS J004216.70+404415.7	IRAS -	GSC2.4.2 NBVF020684	AAVSO -
SIMBAD LGGS J004216.72+404415.8	Pan-STARRS 156880105696915891	SAO -	VSX -
GAIA DR3 369146567871620480	SkyMapper -	WRAY -	GCVS -
2MASS J00421671+4044158	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-13 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	10.5697^Ref	Parallax (mas)	-0.676±0.441^Ref	Reddening E(B-V) (mag)	0.12±0.03^Ref ^{, Note}
Declination (°)	40.7377^Ref	Distance (kpc)	785±25^Ref 3.47^Ref ^{, Note}, 4.46^Ref ^{, Note}
Galactic longitude (°)	121.0595^Ref	Proper motion in α (mas/yr)	-0.47±0.39^Ref
Galactic latitude (°)	-22.1008^Ref	Proper motion in δ (mas/yr)	-0.23±0.34^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	18.73^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	17.79^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	17.48^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	-	Jets	-
FUSE	No^Ref	WISE W2 (mag)	-	Resolved nebula	-
U (mag)	20.98^Ref	WISE W3 (mag)	-	IPmax (eV)	54.4^Ref
B (mag)	21.30^Ref	WISE W4 (mag)	-	[O III] lines	Yes^Ref
V (mag)	24.96^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	19.39^Ref	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	20.32^Ref	IRAS 100μm (Jy)	-
G (mag)	19.92^Ref	AKARI S09 (Jy)	-
RP (mag)	19.01^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	~720?^Ref	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	-
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)	54000^Ref
Upper limit (K)	90000^Ref

Links

SIMBAD CDS Portal

Notes

There is a red variable, [PAC] 57435, very close, with a period P∼720 days, which appears to be the same object, as mentioned in Mikołajewska et al. (2014).

References

Mikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 1, 586, 2014MNRAS.444..586M

M31SyS J004216.70+404415.7