V399 Pav
CONFIRMED
MILKY WAY
Constellation
Pavo |
Equatorial coordinates
α = 19 42 25.386
δ = -68 07 35.449 |
Galactic coordinates
l = 327.6762°
b = -29.7564° |
Suspected |
1954Ref |
Confirmed |
1954Ref |
Symbiotic IR type |
SRef |
Hot component type |
shell-burningRef |
Outbursts |
YesRef - Z AndRef |
|
|
Symbiotic Catalogs
Bidelman (1954) |
- |
Allen (1984) |
Hen 1761 (Conf.) |
Belzcyński et al. (2001) |
Hen 3-1761 (Conf.) |
Gaposchkin (1957) |
Des. 193768 (Conf.) |
Kenyon (1986) |
Hen 1761 (Conf.) |
Akras et al. (2019) |
Hen 3-1761 (Conf.) |
Boyarchuk (1969) |
My 129 (Conf.) |
Vaidis (1988, 1991) |
NSV 12264 (Conf.) |
Position
Right ascension (°) |
295.6058Ref |
Parallax (mas) |
0.285±0.043Ref |
Reddening E(B-V) (mag) |
0.08±0.0Ref, Note |
Declination (°) |
-68.1265Ref |
Distance (kpc) |
3.71Ref 3.24Ref, Note, 3.19Ref, Note |
|
|
Galactic longitude (°) |
327.6762Ref |
Proper motion in α (mas/yr) |
0.54±0.03Ref |
|
|
Galactic latitude (°) |
-29.7564Ref |
Proper motion in δ (mas/yr) |
-6.85±0.04Ref |
|
|
Observations
X-Ray |
NoRef |
IR type |
SRef |
Radio |
NoRef |
X-Ray type |
- |
J (mag) |
6.68Ref |
Flickering |
NoRef |
GALEX FUV (mag) |
13.81Ref |
H (mag) |
5.80Ref |
Outbursts |
YesRef |
GALEX NUV (mag) |
14.66Ref |
K (mag) |
5.45Ref |
Outburst type |
Z AndRef |
IUE |
YesRef |
WISE W1 (mag) |
5.33Ref |
Jets |
- |
FUSE |
NoRef |
WISE W2 (mag) |
5.29Ref |
Resolved nebula |
- |
U (mag) |
- |
WISE W3 (mag) |
5.08Ref |
IPmax (eV) |
99Ref |
B (mag) |
12.63Ref |
WISE W4 (mag) |
4.64Ref |
[O III] lines |
YesRef |
V (mag) |
11.37Ref |
IRAS 12μm (Jy) |
0.42Ref |
He II lines |
YesRef |
R (mag) |
- |
IRAS 25μm (Jy) |
0.27Ref |
[Fe VII] lines |
YesRef |
I (mag) |
- |
IRAS 60μm (Jy) |
0.40Ref |
O VI lines |
NoRef |
BP (mag) |
11.46Ref |
IRAS 100μm (Jy) |
1.25Ref |
|
|
G (mag) |
9.92Ref |
AKARI S09 (Jy) |
0.45Ref |
|
|
RP (mag) |
8.69Ref |
AKARI S18 (Jy) |
0.15Ref |
|
|
Orbit
Orbital period (days) |
560Ref, 559±27Ref |
γ velocity (km/h) |
54.9±0.2Ref, 58.26±1.14Ref |
Size of giant’s orbit (AU) |
0.37Ref |
Eccentricity |
0.05±0.04Ref |
RV of giant (km/h) |
7.3±0.4Ref |
Separation (AU) |
- |
Inclination (°) |
- |
Inferior conj. of giant (JD) |
2449384.18 |
Mass function |
0.022Ref |
Eclipses |
- |
|
|
Mass ratio |
- |
Orbital ephemeris |
- |
|
|
|
|
Cool component
Spectral type |
M5 IIIRef, M5.5 IIIRef |
Mass (M⊙) |
- |
Pulsation |
YesRef |
Eff. temperature (K) |
3300Ref |
Radius (R⊙) |
- |
Type |
SRRef |
IR type |
SRef |
Luminosity (L⊙) |
- |
Pulsation period (days) |
63±1Ref |
Metallicity [Fe/H] |
-0.25±0.08Ref |
|
|
Pulsation ephemeris |
- |
Hot component
Type/Spectral type |
WDRef |
Mass (M⊙) |
- |
Spin period (min) |
- |
Shell-burning/Accreting-only |
shell-burningRef |
Radius (R⊙) |
0.01-0.05Ref |
Accretion disk |
- |
Eff. temperature (K) |
97000-142000Ref, 90000-160000Ref |
Luminosity (L⊙) |
3700-8700Ref, 70-200Ref |
|
|
Lower limit (K) |
- |
|
|
|
|
Upper limit (K) |
- |
|
|
|
|
Notes
Identified as a star with a peculiar spectrum according to observations by Mayall (1951). Subsequent spectroscopic analysis in Thackeray (1954) suggested the symbiotic nature of the object, characterized by the presence of TiO bands and strong emission lines. Optical spectrum revealed emission lines with ionization potential up to 99 eV (Brandi et al., 1998), and N V is visible in the UV spectrum (Gutiérrez-Moreno et al., 1997).
References
- Brandi, E., Barba, R., Garcia, L. G. et al., 1998, A&AS, 132, 281, 1998A&AS..132..281B
- Brandi, E., García, L. G., Quiroga, C. et al., 2006, BAAA, 49, 132, 2006BAAA...49..132B
- Gałan, C., Mikołajewska, J., Hinkle, K. H. et al., 2016, MNRAS, 455, 2, 1282, 2016MNRAS.455.1282G
- Gromadzki, M., Mikołajewska, J., Soszyński, I., 2013, AcA, 63, 4, 405, 2013AcA....63..405G
- Gutiérrez-Moreno, A., Moreno, H., Costa, E. et al., 1997, ApJ, 485, 1, 359, 1997ApJ...485..359G
- Mayall, M. W., 1951, BHarO, 920, 32, 1951BHarO.920...32M
- Merc, J., Beck, P. G., Mathur, S. et al., 2023, arXiv, arXiv:2312.16126, 2023arXiv231216126M
- Mürset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M
- Thackeray, A. D., 1954, Obs, 74, 258, 1954Obs....74..258T
Last updated: January 13, 2024