New Online Database of Symbiotic Variables: SRGA J181414.6-225604

Constellation
Sagittarius

Equatorial coordinates
α = 18 14 14.750
δ = -22 56 19.463

Galactic coordinates
l = 8.4036°
b = -2.5960°

Suspected	2021^Ref
Confirmed	2022^Ref
Symbiotic IR type	D^Ref
Hot component type	accreting-only^Ref
Outbursts	-

Identifiers

SRGA J181414.6-225604	IRAS 18111-2257	GSC2.4.2 SA6E017350	AAVSO -
SIMBAD IRAS 18111-2257	Pan-STARRS 80472735614503843	SAO -	VSX -
GAIA DR3 4066460746608630912	SkyMapper 181414.72-225619.4	WRAY -	GCVS -
2MASS J18141475-2256195	HIP -	Hen -	BD -
WISE J181414.74-225619.4	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 (°)	273.5615^Ref	Parallax (mas)	-0.324±0.150^Ref	Reddening E(B-V) (mag)	1.56±0.06^Ref ^{, Note}
Declination (°)	-22.9387^Ref	Distance (kpc)	14.6±2.5^Ref 8.47^Ref ^{, Note} -^{, Note}
Galactic longitude (°)	8.4036^Ref	Proper motion in α (mas/yr)	-1.78±0.15^Ref
Galactic latitude (°)	-2.5960^Ref	Proper motion in δ (mas/yr)	-1.37±0.11^Ref

Observations

X-Ray	Yes^Ref	IR type	D^Ref	Radio	-
X-Ray type	γ^Ref	J (mag)	8.33^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	6.93^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	6.15^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	5.54^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	4.99^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	3.99^Ref	IPmax (eV)	13.6^Ref
B (mag)	-	WISE W4 (mag)	3.23^Ref	[O III] lines	No^Ref
V (mag)	-	IRAS 12μm (Jy)	1.77^Ref	He II lines	No^Ref
R (mag)	-	IRAS 25μm (Jy)	0.68^Ref	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	7.44^Ref	O VI lines	No^Ref
BP (mag)	-	IRAS 100μm (Jy)	106.00^Ref
G (mag)	-	AKARI S09 (Jy)	-
RP (mag)	14.36^Ref	AKARI S18 (Jy)	0.57^Ref

Orbit

Orbital period (days)	-	γ velocity (km/h)	-	Size of giant’s orbit (AU)	-
Eccentricity	-	RV of giant (km/h)	-	Separation (AU)	55^Ref
Inclination (°)	-	Inferior conj. of giant (JD)	-	Mass function	-
Eclipses	-			Mass ratio	-
Orbital ephemeris	-

Cool component

Spectral type	M7-M8^Ref	Mass (M_⊙)	20000^Ref	Pulsation	Yes^Ref
Eff. temperature (K)	2000^Ref	Radius (R_⊙)	-	Type	Mira^Ref
IR type	D^Ref	Luminosity (L_⊙)	47000^Ref	Pulsation period (days)	1502±24^Ref
Metallicity [Fe/H]	-			Pulsation ephemeris	-

Hot component

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

Links

SIMBAD CDS Portal

Notes

The system has been proposed as a symbiotic X-ray binary hosting a NS and a Mira variable by De (2022). Further detailed analysis and information can be found in the comprehensive study presented by De et al. (2022).

References

De, K., Karambelkar, V., Kasliwal, M. M. et al., 2021, ATel, 14524, 1, 2021ATel14524....1D
De, K., Mereminskiy, I., Soria, R. et al., 2022, ApJ, 935, 1, 36, 2022ApJ...935...36D
De, K., 2022, AAS/High Energy Astrophysics Division, 54, 3, 406.05, 2022HEAD...1940605D

SRGA J181414.6-225604