GaSS 1-5
LIKELY
MILKY WAY
Constellation
Hydra |
Equatorial coordinates
α = 11 22 10.226
δ = -29 21 12.435 |
Galactic coordinates
l = 280.5553°
b = 29.6104° |
| Suspected |
2021Ref |
| Confirmed |
- |
| Symbiotic IR type |
S?Ref |
| Hot component type |
accreting-only?Ref |
| 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 (°) |
170.5426Ref |
Parallax (mas) |
0.099±0.016Ref |
Reddening E(B-V) (mag) |
0.05±0.0Ref, Note |
| Declination (°) |
-29.3535Ref |
Distance (kpc) |
10.1Ref
8.76Ref, Note, 9.16Ref, Note |
|
|
| Galactic longitude (°) |
280.5553Ref |
Proper motion in α (mas/yr) |
-0.24±0.01Ref |
|
|
| Galactic latitude (°) |
29.6104Ref |
Proper motion in δ (mas/yr) |
-1.83±0.01Ref |
|
|
Observations
| X-Ray |
- |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
10.52Ref |
Flickering |
NoRef |
| GALEX FUV (mag) |
- |
H (mag) |
9.75Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
9.53Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
9.45Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
9.47Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
9.28Ref |
IPmax (eV) |
13.6Ref |
| B (mag) |
15.24Ref |
WISE W4 (mag) |
8.58Ref |
[O III] lines |
NoRef |
| V (mag) |
13.47Ref |
IRAS 12μm (Jy) |
- |
He II lines |
NoRef |
| R (mag) |
12.96Ref |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
NoRef |
| BP (mag) |
13.70Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
12.77Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
11.84Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
311Ref |
γ velocity (km/h) |
38.65±0.65Ref |
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 |
Min (V) = 2457870 + 311 x ERef |
|
|
|
|
Cool component
| Spectral type |
M2Ref |
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 |
accreting-only?Ref |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
This candidate for the accreting-only symbiotic star was identified in the GALAH high-resolution spectroscopic survey (Munari et al., 2021).
References
- Munari, U., Traven, G., Masetti, N. et al., 2021, MNRAS, 505, 4, 6121, 2021MNRAS.505.6121M
Last updated: August 21, 2021