Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems: V1044 Centauri, Hen 3-1213, and SS 73-96 (2024)

Fekel, F. C., Hinkle, K. H., Joyce, R. R., & Wood, P. R. (2015). Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems: V1044 Centauri, Hen 3-1213, and SS 73-96. Astronomical Journal, 150(2), Article 48. https://doi.org/10.1088/0004-6256/150/2/48

Fekel, Francis C. ; Hinkle, Kenneth H. ; Joyce, Richard R. et al. / Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems : V1044 Centauri, Hen 3-1213, and SS 73-96. In: Astronomical Journal. 2015 ; Vol. 150, No. 2.

@article{d7412f7c40c94148a351aeb30e56468d,

title = "Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems: V1044 Centauri, Hen 3-1213, and SS 73-96",

abstract = "Employing new infrared radial velocities, we have computed orbits of the cool giants in three southern S-type symbiotic systems. The orbit for V1044 Cen, an M5.5 giant, has a period of 985 days and a modest eccentricity of 0.16. Hen 3-1213 is a K4 giant, yellow symbiotic with an orbital period of 533 days and a similar eccentricity of 0.18. For the M2 giant SS 73-96 the orbital period is 828 days, and this system has a somewhat larger eccentricity of 0.26. Measurement of the H i Paschen δ emission lines, which may at least partially reflect the motion of the secondary in SS 73-96, results in a mass ratio of 2.4 for the M giant relative to the presumed white dwarf. The estimated orbital inclinations of V1044 Cen and Hen 3-1213 are low, about 40°. However, for SS 73-96 the predicted inclination is 90°, and so an ephemeris for eclipses of the secondary or the hot nebula surrounding it is provided. A search of the orbital velocity residuals of V1044 Cen and SS 73-96 for pulsation periods produced no realistic or convincing period for either star.",

keywords = "binaries: symbiotic, infrared: stars, stars: individual (V1044 Cen, Hen 3-1213, SS 73-96), stars: late-type",

author = "Fekel, {Francis C.} and Hinkle, {Kenneth H.} and Joyce, {Richard R.} and Wood, {Peter R.}",

note = "Publisher Copyright: {\textcopyright} 2015. The American Astronomical Society. All rights reserved..",

year = "2015",

month = aug,

day = "1",

doi = "10.1088/0004-6256/150/2/48",

language = "English",

volume = "150",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "2",

}

Fekel, FC, Hinkle, KH, Joyce, RR & Wood, PR 2015, 'Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems: V1044 Centauri, Hen 3-1213, and SS 73-96', Astronomical Journal, vol. 150, no. 2, 48. https://doi.org/10.1088/0004-6256/150/2/48

Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems: V1044 Centauri, Hen 3-1213, and SS 73-96. / Fekel, Francis C.; Hinkle, Kenneth H.; Joyce, Richard R. et al.
In: Astronomical Journal, Vol. 150, No. 2, 48, 01.08.2015.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems

T2 - V1044 Centauri, Hen 3-1213, and SS 73-96

AU - Fekel, Francis C.

AU - Hinkle, Kenneth H.

AU - Joyce, Richard R.

AU - Wood, Peter R.

N1 - Publisher Copyright:© 2015. The American Astronomical Society. All rights reserved..

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Employing new infrared radial velocities, we have computed orbits of the cool giants in three southern S-type symbiotic systems. The orbit for V1044 Cen, an M5.5 giant, has a period of 985 days and a modest eccentricity of 0.16. Hen 3-1213 is a K4 giant, yellow symbiotic with an orbital period of 533 days and a similar eccentricity of 0.18. For the M2 giant SS 73-96 the orbital period is 828 days, and this system has a somewhat larger eccentricity of 0.26. Measurement of the H i Paschen δ emission lines, which may at least partially reflect the motion of the secondary in SS 73-96, results in a mass ratio of 2.4 for the M giant relative to the presumed white dwarf. The estimated orbital inclinations of V1044 Cen and Hen 3-1213 are low, about 40°. However, for SS 73-96 the predicted inclination is 90°, and so an ephemeris for eclipses of the secondary or the hot nebula surrounding it is provided. A search of the orbital velocity residuals of V1044 Cen and SS 73-96 for pulsation periods produced no realistic or convincing period for either star.

AB - Employing new infrared radial velocities, we have computed orbits of the cool giants in three southern S-type symbiotic systems. The orbit for V1044 Cen, an M5.5 giant, has a period of 985 days and a modest eccentricity of 0.16. Hen 3-1213 is a K4 giant, yellow symbiotic with an orbital period of 533 days and a similar eccentricity of 0.18. For the M2 giant SS 73-96 the orbital period is 828 days, and this system has a somewhat larger eccentricity of 0.26. Measurement of the H i Paschen δ emission lines, which may at least partially reflect the motion of the secondary in SS 73-96, results in a mass ratio of 2.4 for the M giant relative to the presumed white dwarf. The estimated orbital inclinations of V1044 Cen and Hen 3-1213 are low, about 40°. However, for SS 73-96 the predicted inclination is 90°, and so an ephemeris for eclipses of the secondary or the hot nebula surrounding it is provided. A search of the orbital velocity residuals of V1044 Cen and SS 73-96 for pulsation periods produced no realistic or convincing period for either star.

KW - binaries: symbiotic

KW - infrared: stars

KW - stars: individual (V1044 Cen, Hen 3-1213, SS 73-96)

KW - stars: late-type

UR - http://www.scopus.com/inward/record.url?scp=84938405820&partnerID=8YFLogxK

U2 - 10.1088/0004-6256/150/2/48

DO - 10.1088/0004-6256/150/2/48

M3 - Article

SN - 0004-6256

VL - 150

JO - Astronomical Journal

JF - Astronomical Journal

IS - 2

M1 - 48

ER -

Fekel FC, Hinkle KH, Joyce RR, Wood PR. Infrared spectroscopy of symbiotic stars. X. Orbits for three S-type systems: V1044 Centauri, Hen 3-1213, and SS 73-96. Astronomical Journal. 2015 Aug 1;150(2):48. doi: 10.1088/0004-6256/150/2/48