[RP2006] 264

SUSPECTED LMC   Equatorial coordinates α =  85.876538 ± 2.193235 | 05 43 30.344000 δ =  -69.412938 ± 2.713948 | -69 24 46.670000   Constellation Dorado Symbiotic IR Type D’🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A Spectral Type   Magnitude range (V)   Outbursts No

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Identifiers

[RP2006] 264	GSC –	TYC –	WRAY –
SIMBAD [RP2006] 264	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 4657622381614885376	ESO –
HD –	2MASS J05433034-6924466	WISE J054330.33-692446.5	AAVSO –

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Position

Right ascension (°)	85.876538 ± 2.193235refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Parallax (mas)	–	Reddening E(B-V) (mag)	1.341 ± 0.430refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-69.412938 ± 2.713948refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Distance (kpc)	49.97 ± 0.19refPietrzyński, G., Graczyk, D., Gieren, W., et al., 2013, Nature, 495, 76, 2013Natur.495…76P
Galactic longitude (°)	279.776345 ± 2.713948refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	–
Galactic latitude (°)	-31.216436 ± 2.193235refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	–

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Observations

U (mag)	18.72refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	X-Ray		Flickering
B (mag)	19.12refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	X-Ray type		Outbursts	No
V (mag)	18.15refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	IUE	No	Type
R (mag)	17.79refKamath, D., Wood, P. R., Van Winckel, H., 2015, MNRAS, 454, 1468 2015MNRAS.454.1468K	IRAS flux at 12 μm (Jy)		IPmax (eV)	35.1refReid, W. A., 2014, MNRAS, 438, 2642, 2014MNRAS.438.2642R
I (mag)	18.90refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	IRAS flux at 25 μm (Jy)		OVI lines	NorefReid, W. A., 2014, MNRAS, 438, 2642, 2014MNRAS.438.2642R
G (mag)	19.76refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	IRAS flux at 60 μm (Jy)
J (mag)	16.30refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	IRAS flux at 100 μm (Jy)
H (mag)	14.78refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)	10.13refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
K (mag)	12.88refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	WISE W2 (mag)	8.69refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
L (mag)		WISE W3 (mag)	5.15refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		WISE W4 (mag)	2.63refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		Radio
		Radio flux (mJy)

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Orbit

Orbital period (days)		γ velocity (km/h)		Size of giant’s orbit (AU)
Eccentricity		RV of giant (km/h)		Separation (AU)
Inclination (°)		Inferior conj. of giant (JD)		Mass function
Ephemeris type				Mass ratio
Ephemeris T0 (JD)

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Cool component

Spectral type		Mass (M⊙)		Pulsation
Eff. temperature (K)	3754refAkras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A	Radius (R⊙)		Type
IR type	D’🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A, refAkras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A	Luminosity (L⊙)		Pulsation period (days)
Metallicity [Fe/H]				Ephemeris type
				Ephemeris T0 (JD)

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Hot component

Type/Spectra		Mass (M⊙)		Spin period (min)
Eff. temperature (K)		Radius (R⊙)		Accretion disk
Lower limit (K)		Luminosity (L⊙)
Upper limit (K)

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Links

SIMBAD     CDS Portal

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Notes

An elliptical Hα nebula is observed. The very red colour and very high MIR luminosity points to an obscured RGB or AGB star with significant variability in the OGLE-III I- band lightcurve. The combination of nebula and obscured star make [RP2006] 264 an excellent symbiotic star candidate (Miszalski et al., 2011). Also suspected in Reid (2014).

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References

• Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
• Miszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157, 2011A&A…531A.157M
• Reid, W. A., 2014, MNRAS, 438, 2642, 2014MNRAS.438.2642R

Last updated: May 2, 2019 @ 11:16 am