LM 2-39
SUSPECTED
LMC
Constellation
Dorado |
Equatorial coordinates
α = 05 40 14.811
δ = -69 28 49.140 |
Galactic coordinates
l = 279.8897°
b = -31.4939° |
| Suspected |
2011Ref |
| Confirmed |
- |
| Symbiotic IR type |
D'?Ref |
| Hot component type |
- |
| Outbursts |
- |
|
|
Symbiotic Catalogs
| Bidelman (1954) |
- |
Allen (1984) |
- |
Belzcyński et al. (2001) |
- |
| Gaposchkin (1957) |
- |
Kenyon (1986) |
- |
Akras et al. (2019) |
LM 2-39 (Susp.) |
| Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
- |
Position
| Right ascension (°) |
85.0617Ref |
Parallax (mas) |
-0.875±0.196Ref |
Reddening E(B-V) (mag) |
3.29±1.43Ref, Note |
| Declination (°) |
-69.4803Ref |
Distance (kpc) |
49.97±0.19Ref
8.04Ref, Note, 3.80Ref, Note |
|
|
| Galactic longitude (°) |
279.8897Ref |
Proper motion in α (mas/yr) |
5.31±0.25Ref |
|
|
| Galactic latitude (°) |
-31.4939Ref |
Proper motion in δ (mas/yr) |
1.47±0.27Ref |
|
|
Observations
| X-Ray |
NoRef |
IR type |
D'?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
15.37Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
14.54Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
12.95Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
10.46Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
8.77Ref |
Resolved nebula |
- |
| U (mag) |
16.64Ref |
WISE W3 (mag) |
5.28Ref |
IPmax (eV) |
- |
| B (mag) |
17.11Ref |
WISE W4 (mag) |
2.93Ref |
[O III] lines |
- |
| V (mag) |
16.76Ref |
IRAS 12μm (Jy) |
- |
He II lines |
- |
| R (mag) |
15.87Ref |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
- |
| I (mag) |
16.03Ref |
IRAS 60μm (Jy) |
- |
O VI lines |
- |
| BP (mag) |
16.63Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
16.57Ref |
AKARI S09 (Jy) |
0.20Ref |
|
|
| RP (mag) |
15.78Ref |
AKARI S18 (Jy) |
0.44Ref |
|
|
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 |
- |
Mass (M⊙) |
- |
Pulsation |
- |
| Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
- |
| IR type |
D'?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 |
- |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
According to Miszalski et al. (2011), the presence of a resolved Hα nebula, NIR and MIR colors, and slow I-band variations suggest that LM2-39 is a strong symbiotic star candidate.
References
- Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L. et al., 2019, ApJS, 240, 2, 21, 2019ApJS..240...21A
- Miszalski, B., Napiwotzki, R., Cioni, M.-R. L. et al., 2011, A&A, 531, A157, 2011A&A...531A.157M
Last updated: May 2, 2019