LM 2-39

SUSPECTED LMC   Equatorial coordinates α =  85.061711 ± 0.228336 | 05 40 14.802052 δ =  -69.480317 ± 0.254024 | -69 28 49.180232   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

LM 2-39	GSC –	TYC –	WRAY –
SIMBAD LM 2-39	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 4657648082707959680	ESO –
HD –	2MASS J05401481-6928490	WISE J054014.81-692849.1	AAVSO –

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Position

Right ascension (°)	85.061711 ± 0.228336refGaia 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)	3.287 ± 1.435refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-69.480317 ± 0.254024refGaia 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 (°)	279.889703 ± 0.254024refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	2.878118 ± 0.438200refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G
Galactic latitude (°)	-31.493902 ± 0.228336refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	2.539424 ± 0.502596refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G

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Observations

U (mag)	16.64refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	X-Ray		Flickering
B (mag)	17.11refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	X-Ray type		Outbursts	No
V (mag)	16.76refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	IUE	No	Type
R (mag)	15.87refFraser, O. J., Hawley, S. L., Cook, K. H., 2008, AJ, 136, 1242, 2008AJ….136.1242F	IRAS flux at 12 μm (Jy)		IPmax (eV)
I (mag)	16.03refZaritsky, D., Harris, J., Thompson, I. B., et al., 2004, AJ, 128, 1606, 2004AJ….128.1606Z	IRAS flux at 25 μm (Jy)		OVI lines
G (mag)	16.51refGaia 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)	15.31refMiszalski, 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)	14.54refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)	10.46refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
K (mag)	13.04refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	WISE W2 (mag)	8.77refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
L (mag)		WISE W3 (mag)	5.28refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		WISE W4 (mag)	2.93refCutri, 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)	3792refAkras, 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

According to Miszalski et al. (2011), the resolved Hα nebula, NIR and MIR colours, and slow I-band variations suggest LM2-39 to be a strong symbiotic star candidate.

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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

Last updated: May 2, 2019 @ 11:06 am