New Online Database of Symbiotic Variables: LMC N19

CONFIRMED LMC

Constellation
Dorado

Equatorial coordinates
α = 05 03 23.753
δ = -67 56 33.632

Galactic coordinates
l = 278.8072°
b = -35.0574°

Suspected	1996^Ref
Confirmed	1996^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes?^Ref

Identifiers

LMC N19	IRAS -	GSC2.4.2 S1HH098372	AAVSO 000-BLT-632
SIMBAD LHA 120-N 19	Pan-STARRS -	SAO -	VSX 410500
GAIA DR3 4661451121631302784	SkyMapper 050323.78-675634.0	WRAY -	GCVS -
2MASS J05032373-6756335	HIP -	Hen -	BD -
WISE J050323.75-675633.4	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	LMC N19 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	LMC N19 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	75.8490^Ref	Parallax (mas)	0.010±0.026^Ref	Reddening E(B-V) (mag)	0.28±0.05^Ref ^{, Note}
Declination (°)	-67.9427^Ref	Distance (kpc)	49.97±0.19^Ref 13.29^Ref ^{, Note}, 9.80^Ref ^{, Note}
Galactic longitude (°)	278.8072^Ref	Proper motion in α (mas/yr)	1.88±0.03^Ref
Galactic latitude (°)	-35.0574^Ref	Proper motion in δ (mas/yr)	0.21±0.04^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	12.73^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	11.84^Ref	Outbursts	Yes?^Ref
GALEX NUV (mag)	-	K (mag)	11.53^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	11.41^Ref	Jets	-
FUSE	Yes^Ref	WISE W2 (mag)	11.42^Ref	Resolved nebula	-
U (mag)	16.50^Ref	WISE W3 (mag)	11.08^Ref	IPmax (eV)	114^Ref
B (mag)	-	WISE W4 (mag)	9.55^Ref	[O III] lines	No^Ref
V (mag)	16.40^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	15.34^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	14.27^Ref	IRAS 60μm (Jy)	-	O VI lines	Yes^Ref
BP (mag)	16.81^Ref	IRAS 100μm (Jy)	-
G (mag)	15.55^Ref	AKARI S09 (Jy)	-
RP (mag)	14.41^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	1012±32^Ref	γ velocity (km/h)	239.14±4.23^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	M4 III^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	-
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	79±1^Ref
Metallicity [Fe/H]	-			Pulsation ephemeris	Min(I) = 2456012±1 + 79±1 x E^Ref

Hot component

Type/Spectral type	-	Mass (M_⊙)	-	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	180000^Ref	Luminosity (L_⊙)	350^Ref
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

Typical symbiotic spectrum featuring an M4 giant and prominent high-excitation emission lines. No forbidden lines were observed (Angeloni et al., 2014).

References

Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L. et al., 2019, ApJS, 240, 2, 21, 2019ApJS..240...21A
Angeloni, R., Ferreira Lopes, C. E., Masetti, N. et al., 2014, MNRAS, 438, 1, 35, 2014MNRAS.438...35A
Morgan, D. H., 1996, MNRAS, 279, 1, 301, 1996MNRAS.279..301M
Mürset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M
Mürset, U., Wolff, B., Jordan, S., 1997, A&A, 319, 201, 1997A&A...319..201M

LMC N19