ASAS J174600-2321.3
LIKELY
MILKY WAY
Constellation
Sagittarius |
Equatorial coordinates
α = 17 46 00.176
δ = -23 21 16.413 |
Galactic coordinates
l = 4.8139°
b = 2.8297° |
| Suspected |
2015Ref |
| Confirmed |
- |
| Symbiotic IR type |
S?Ref |
| Hot component type |
shell-burning?Ref |
| Outbursts |
YesRef - SyN?Ref |
|
|
Symbiotic Catalogs
| Bidelman (1954) |
- |
Allen (1984) |
- |
Belzcyński et al. (2001) |
- |
| Gaposchkin (1957) |
- |
Kenyon (1986) |
- |
Akras et al. (2019) |
ASAS J174600-2321.3 (Susp.) |
| Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
- |
Position
| Right ascension (°) |
266.5007Ref |
Parallax (mas) |
0.100±0.025Ref |
Reddening E(B-V) (mag) |
0.81±0.04Ref, Note |
| Declination (°) |
-23.3546Ref |
Distance (kpc) |
6.7Ref
7.64Ref, Note, 7.66Ref, Note |
|
|
| Galactic longitude (°) |
4.8139Ref |
Proper motion in α (mas/yr) |
-4.87±0.03Ref |
|
|
| Galactic latitude (°) |
2.8297Ref |
Proper motion in δ (mas/yr) |
-3.35±0.02Ref |
|
|
Observations
| X-Ray |
NoRef |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
9.93Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
8.76Ref |
Outbursts |
YesRef |
| GALEX NUV (mag) |
- |
K (mag) |
8.35Ref |
Outburst type |
SyN?Ref |
| IUE |
NoRef |
WISE W1 (mag) |
7.74Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
7.75Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
7.60Ref |
IPmax (eV) |
13.6Ref |
| B (mag) |
14.13Ref |
WISE W4 (mag) |
7.33Ref |
[O III] lines |
NoRef |
| V (mag) |
13.04Ref |
IRAS 12μm (Jy) |
- |
He II lines |
NoRef |
| R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
NoRef |
| BP (mag) |
12.44Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
11.64Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
10.73Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
1012.4±0.2Ref |
γ velocity (km/h) |
-47.97±4.10Ref |
Size of giant’s orbit (AU) |
- |
| Eccentricity |
- |
RV of giant (km/h) |
- |
Separation (AU) |
2.5Ref |
| Inclination (°) |
- |
Inferior conj. of giant (JD) |
- |
Mass function |
- |
| Eclipses |
YesRef |
|
|
Mass ratio |
3Ref |
| Orbital ephemeris |
Min (I) = 2456142 + 1012.4±0.2 x ERef |
|
|
|
|
Cool component
| Spectral type |
M7Ref |
Mass (M⊙) |
1.5Ref |
Pulsation |
YesRef |
| Eff. temperature (K) |
3150Ref |
Radius (R⊙) |
145Ref |
Type |
SRRef |
| IR type |
S?Ref |
Luminosity (L⊙) |
4365Ref |
Pulsation period (days) |
56Ref |
| Metallicity [Fe/H] |
- |
|
|
Pulsation ephemeris |
- |
Hot component
| Type/Spectral type |
WDRef |
Mass (M⊙) |
0.5Ref |
Spin period (min) |
- |
| Shell-burning/Accreting-only |
shell-burning?Ref |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
A long-lasting brightening of 4 mag was detected (Hümmerich et al., 2015). The R CrB type has been rejected based on the spectra showing an F-type supergiant together with a late M giant. The symbiotic nature is further supported by the analysis of IR data by Akras et al. (2019).
References
- Akras, S., Leal-Ferreira, M. L., Guzman-Ramirez, L. et al., 2019, MNRAS, 483, 4, 5077, 2019MNRAS.483.5077A
- Hambsch, F.-J., Hümmerich, S., Bernhard, K. et al., 2015, JAVSO, 43, 2, 213, 2015JAVSO..43..213H
- Hümmerich, S., Otero, S., Tisserand, P. et al., 2015, JAVSO, 43, 1, 14, 2015JAVSO..43...14H
- Tisserand, P., Clayton, G. C., Welch, D. L. et al., 2013, A&A, 551, A77, 2013A&A...551A..77T
- Tisserand, P., Marquette, J. B., Wood, P. R. et al., 2008, A&A, 481, 3, 673, 2008A&A...481..673T
Last updated: May 3, 2022