SRGA J132032.4-701437
SUSPECTED
MILKY WAY
Constellation
Musca |
Equatorial coordinates
α = 13 20 32.070
δ = -70 14 44.388 |
Galactic coordinates
l = 305.4059°
b = -7.5138° |
| Suspected |
2021Ref |
| Confirmed |
- |
| Symbiotic IR type |
S?Ref |
| Hot component type |
- |
| Outbursts |
- |
|
|
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 (°) |
200.1336Ref |
Parallax (mas) |
0.434±0.014Ref |
Reddening E(B-V) (mag) |
0.24±0.0Ref, Note |
| Declination (°) |
-70.2457Ref |
Distance (kpc) |
2.3Ref
2.15Ref, Note, 2.14Ref, Note |
|
|
| Galactic longitude (°) |
305.4059Ref |
Proper motion in α (mas/yr) |
-3.84±0.02Ref |
|
|
| Galactic latitude (°) |
-7.5138Ref |
Proper motion in δ (mas/yr) |
-4.34±0.02Ref |
|
|
Observations
| X-Ray |
YesRef |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
βRef |
J (mag) |
12.14Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
11.52Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
11.27Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
11.17Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
11.16Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
11.05Ref |
IPmax (eV) |
- |
| B (mag) |
- |
WISE W4 (mag) |
9.37Ref |
[O III] lines |
- |
| V (mag) |
- |
IRAS 12μm (Jy) |
- |
He II lines |
- |
| R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
- |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
- |
| BP (mag) |
14.56Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
13.95Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
13.18Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
- |
γ velocity (km/h) |
216.35±6.32Ref |
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 |
K5Ref |
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 |
- |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
Suspected based on X-ray emission detected by Pavlinsky et al. (2022), with an alternative explanation being a high-mass X-ray binary. They suggested a likely association of the X-ray source with Gaia EDR3 5844075864125790464.
References
- Pavlinsky, M., Sazonov, S., Burenin, R. et al., 2022, A&A, 661, A38, 2022A&A...661A..38P
Last updated: August 21, 2021