LMC N19

CONFIRMED LMC   Equatorial coordinates α =  75.848970 ± 0.045911 | 05 03 23.747701 δ =  -67.942676 ± 0.058870 | -67 56 33.634274   Constellation Dorado Symbiotic IR Type S🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A Spectral Type M4 Magnitude range (V)   Outbursts Yes?

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Identifiers

LMC N19	GSC –	TYC –	WRAY –
SIMBAD LHA 120-N 19	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 4661451121631302784	ESO –
HD –	2MASS J05032373-6756335	WISE J050323.75-675633.3	AAVSO 000-BLT-632

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Position

Right ascension (°)	75.848970 ± 0.045911refGaia 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)	0.276 ± 0.054refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-67.942676 ± 0.058870refGaia 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 (°)	278.807211 ± 0.045911refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	1.862407 ± 0.083188refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G
Galactic latitude (°)	-35.057450 ± 0.058870refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	0.137780 ± 0.102639refGaia 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)	16.50refMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M	X-Ray	NorefMuerset, U., Wolff, B., Jordan, S., 1997, A&A, 319, 201, 1997A&A…319..201M	Flickering
B (mag)		X-Ray type		Outbursts	Yes?refMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M
V (mag)	16.40refMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M	IUE	No	Type
R (mag)	15.34refZacharias, N., Finch, C. T., Girard, T. M., et al., 2012, VizieR Online Data Catalog: I/322A, 2012yCat.1322….0Z	IRAS flux at 12 μm (Jy)		IPmax (eV)	114.0refMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M
I (mag)	14.27refSoszyński, I., Udalski, A., Szymański, M. K., et al., 2009, Acta Astronomica, 59, 239, 2009AcA….59..239S	IRAS flux at 25 μm (Jy)		OVI lines	YesrefMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M
G (mag)	15.50refGaia 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)	12.73refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	IRAS flux at 100 μm (Jy)
H (mag)	11.84refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)	11.41refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
K (mag)	11.53refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W2 (mag)	11.43refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
L (mag)		WISE W3 (mag)	11.31refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		WISE W4 (mag)	10.08refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		Radio	3.5 cmrefFilipovic, M. D., Haynes, R. F., White, G. L., et al., 1995, A&AS, 111, 311, 1995A&AS..111..311F
		Radio flux (mJy)	0.066refFilipovic, M. D., Haynes, R. F., White, G. L., et al., 1995, A&AS, 111, 311, 1995A&AS..111..311F

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Orbit

Orbital period (days)	1012 ± 32refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A	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	M4 IIIrefAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A	Mass (M⊙)		Pulsation	YesrefAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
Eff. temperature (K)	3724refAkras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A	Radius (R⊙)		Type
IR type	S🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A, refMuerset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M	Luminosity (L⊙)		Pulsation period (days)	79 ± 1refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
Metallicity [Fe/H]				Ephemeris type	Min(I)refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
				Ephemeris T0 (JD)	2456012 ± 1refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A

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Hot component

Type/Spectra		Mass (M⊙)		Spin period (min)
Eff. temperature (K)	180000refMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M	Radius (R⊙)		Accretion disk
Lower limit (K)		Luminosity (L⊙)	350refMorgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M
Upper limit (K)

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Links

SIMBAD     CDS Portal    VSX

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Notes

Typical symbiotic spectrum with an M4 giant and strong, high-excitation emission lines. No forbidden ones appeared (Angeloni et al., 2014). 

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References

• Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
• Angeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
• Morgan, D. H., 1996, MNRAS, 279, 301, 1996MNRAS.279..301M
• Muerset, U., Wolff, B., Jordan, S., 1997, A&A, 319, 201, 1997A&A…319..201M
• Muerset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M

Last updated: May 2, 2019 @ 11:07 am