PU Vul

Constellation
Vulpecula

Equatorial coordinates
α = 20 21 13.308
δ = +21 34 18.601

Galactic coordinates
l = 62.5752°
b = -8.5317°

Suspected	1980^Ref
Confirmed	1984^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes^Ref - SyN^Ref

Identifiers

PU Vul	IRAS 20189+2124	GSC2.4.2 N2PO000474	AAVSO 000-BCL-393
SIMBAD V* PU Vul	Pan-STARRS 133883053055106752	SAO -	VSX 38494
GAIA DR3 1829139027066224640	SkyMapper -	WRAY -	GCVS PU Vul
2MASS J20211331+2134186	HIP -	Hen -	BD -
WISE J202113.30+213418.6	TYC 1643-1021-1	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	PU Vul (Susp.)	Belzcyński et al. (2001)	PU Vul (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	PU Vul (Conf.)	Akras et al. (2019)	PU Vul (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	PU Vul (Conf.)

Position

Right ascension (°)	305.3054^Ref	Parallax (mas)	0.191±0.039^Ref	Reddening E(B-V) (mag)	0.29±0.01^Ref ^{, Note}
Declination (°)	21.5718^Ref	Distance (kpc)	5.6±1.3^Ref, 3.8±0.7^Ref, 4.7±0.6^Ref 4.23^Ref ^{, Note}, 4.09^Ref ^{, Note}
Galactic longitude (°)	62.5752^Ref	Proper motion in α (mas/yr)	-3.00±0.03^Ref
Galactic latitude (°)	-8.5317^Ref	Proper motion in δ (mas/yr)	-6.01±0.03^Ref

Observations

X-Ray	Yes^Ref	IR type	S^Ref	Radio	Yes^Ref
X-Ray type	β^Ref	J (mag)	7.42^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	6.54^Ref	Outbursts	Yes^Ref
GALEX NUV (mag)	-	K (mag)	6.12^Ref	Outburst type	SyN^Ref
IUE	No^Ref	WISE W1 (mag)	5.92^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	5.74^Ref	Resolved nebula	No^Ref
U (mag)	-	WISE W3 (mag)	5.14^Ref	IPmax (eV)	114^Ref
B (mag)	12.88^Ref	WISE W4 (mag)	4.32^Ref	[O III] lines	Yes^Ref
V (mag)	12.55^Ref	IRAS 12μm (Jy)	0.39^Ref	He II lines	Yes^Ref
R (mag)	11.70^Ref	IRAS 25μm (Jy)	0.25^Ref	[Fe VII] lines	Yes^Ref
I (mag)	-	IRAS 60μm (Jy)	0.40^Ref	O VI lines	Yes^Ref
BP (mag)	12.26^Ref	IRAS 100μm (Jy)	6.92^Ref
G (mag)	11.13^Ref	AKARI S09 (Jy)	0.39^Ref
RP (mag)	9.94^Ref	AKARI S18 (Jy)	0.16^Ref

Orbit

Orbital period (days)	4918±8^Ref, 4900±9^Ref, 4897±10^Ref	γ velocity (km/h)	-	Size of giant’s orbit (AU)	-
Eccentricity	0.16^Ref	RV of giant (km/h)	-	Separation (AU)	-
Inclination (°)	90^Ref	Inferior conj. of giant (JD)	-	Mass function	0.05^Ref
Eclipses	Yes^Ref			Mass ratio	1.13^Ref
Orbital ephemeris	Min (B)=2449458±10 + 4918±8 x E^Ref, Min (I) = 2444550±15 + 4897±10 x E^Ref

Cool component

Spectral type	M4-5 III^Ref, M6 III^Ref, M6 III^Ref	Mass (M_⊙)	0.7-1.1^Ref, 0.78^Ref	Pulsation	Yes^Ref
Eff. temperature (K)	3200^Ref	Radius (R_⊙)	50^Ref, 226^Ref, 82^Ref, 282^Ref, 285^Ref	Type	SR^Ref
IR type	S^Ref	Luminosity (L_⊙)	350^Ref, 3780^Ref	Pulsation period (days)	215±20^Ref, 217.7^Ref, 138±2^Ref
Metallicity [Fe/H]	-0.37±0.06^Ref			Pulsation ephemeris	-

Hot component

Type/Spectral type	WD^Ref	Mass (M_⊙)	0.6^Ref, 0.4-0.5^Ref, 0.69^Ref, 0.55-0.65^Ref, 0.6^Ref	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	100000^Ref, 150000^Ref	Luminosity (L_⊙)	9380^Ref, 3500^Ref
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal ARAS Database

Notes

A potential detection of the coronal [Fe X] line was reported by Andrillat & Houziaux (1994). The system was also proposed to be a triple system, as suggested in Chochol et al. (1998). A comprehensive discussion of its evolution is provided by Kato et al. (2012) and Cúneo et al. (2018).

References

Andrillat, Y., Houziaux, L., 1994, MNRAS, 271, 875, 1994MNRAS.271..875A
Belyakina, T. S., Bondar, N. I., Chochol, D. et al., 1984, A&A, 132, L12, 1984A&A...132L..12B
Belyakina, T. S., Bondar, N. I., Chochol, D. et al., 1989, A&A, 223, 119, 1989A&A...223..119B
Chochol, D., Grygar, J., 1987, Ap&SS, 131, 1-2, 487, 1987Ap&SS.131..487C
Chochol, D., Pribulla, T., Tamura, S., 1998, IBVS, 4571, 1, 1998IBVS.4571....1C
Cúneo, V. A., Kenyon, S. J., Gómez, M. N. et al., 2018, MNRAS, 479, 2, 2728, 2018MNRAS.479.2728C
Gałan, C., Mikołajewska, J., Hinkle, K. H. et al., 2023, MNRAS, 526, 1, 918, 2023MNRAS.526..918G
Iijima, T., Ortolani, S., 1984, A&A, 136, 1, 1984A&A...136....1I
Iijima, T., 1989, A&A, 215, 57, 1989A&A...215...57I
Kato, M., Hachisu, I., Cassatella, A. et al., 2011, ApJ, 727, 2, 72, 2011ApJ...727...72K
Kato, M., Mikołajewska, J., Hachisu, I., 2012, ApJ, 750, 1, 5, 2012ApJ...750....5K
Kenyon, S. J., 1986, AJ, 91, 563, 1986AJ.....91..563K
Klein, A., Bruch, A., Luthardt, R., 1994, A&AS, 104, 99, 1994A&AS..104...99K
Kolotilov, E. A., Munari, U., Yudin, B. F., 1995, MNRAS, 275, 1, 185, 1995MNRAS.275..185K
Kozai, Y., Kuwano, Y., Mattei, J. et al., 1979, IAUC, 3344, 1, 1979IAUC.3344....1K
Liller, M. H., Liller, W., 1979, AJ, 84, 1357, 1979AJ.....84.1357L
Merc, J., Beck, P. G., Mathur, S. et al., 2023, arXiv, arXiv:2312.16126, 2023arXiv231216126M
Tatarnikova, A. A., Tatarnikov, A. M., 2009, ARep, 53, 11, 1020, 2009ARep...53.1020T
Toalá, J. A., Botello, M. K., Sabin, L., 2023, ApJ, 948, 1, 14, 2023ApJ...948...14T
Tomov, T., Zamanov, R. K., Iliev, L. et al., 1991, MNRAS, 252, 31P, 1991MNRAS.252P..31T
Yoo, K., 2007, JKAS, 40, 2, 39, 2007JKAS...40...39Y