J/AJ/153/35 Infrared spectroscopy of symbiotic stars. XI. (Fekel+, 2017)
Infrared spectroscopy of symbiotic stars. XI. Orbits for southern S-type
systems: Hen 3-461, SY Mus, Hen 3-828, and AR Pav.
Fekel F.C., Hinkle K.H., Joyce R.R., Wood P.R.
<Astron. J., 153, 35-35 (2017)>
=2017AJ....153...35F 2017AJ....153...35F (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Stars, M-type ; Stars, giant ; Spectroscopy ;
Radial velocities
Keywords: binaries: symbiotic - infrared: stars - stars: late-type
Abstract:
Employing new infrared radial velocities, we have computed
spectroscopic orbits of the cool giants in four southern S-type
symbiotic systems. The orbits for two of the systems, Hen 3-461 and
Hen 3-828, have been determined for the first time, while orbits of
the other two, SY Mus and AR Pav, have previously been determined. For
the latter two systems, we compare our results with those in the
literature. The low mass of the secondary of SY Mus suggests that it
has gone through a common envelope phase. Hen 3-461 has an orbital
period of 2271 days, one of the longest currently known for S-type
symbiotic systems. That period is very different from the orbital
period proposed previously from its photometric variations. The other
three binaries have periods between 600 and 700 day, values that are
typical for S-type symbiotic orbits. Basic properties of the M giant
components and the distance to each system are determined.
Description:
Our spectroscopic observations in the southern hemisphere were
initially acquired from 2001 March through 2002 December. We observed
at the Mount Stromlo Observatory (MSO), which is located near
Canberra, Australia, and used the 1.88m telescope and coude
spectrograph. The detector to record our spectra was an infrared
camera, NICMASS, that was developed at the University of
Massachusetts. It produced a 2 pixel resolving power of 44000 at a
wavelength of 1.623µm.
Between 2003 February and 2010 June we obtained some additional
spectra with the 8m Gemini South telescope, located at Cerro Pachon,
Chile. We used the Phoenix cryogenic echelle spectrograph. That
spectrograph enabled us to observe at several different infrared
wavelength regions including 1.563, 2.226, and 2.364µm, and the
Gemini South spectra have a resolving power equal to either 50000 or
70000.
From 2009 May through 2010 June we also used the 1.5m telescope at the
Cerro Tololo Inter-American Observatory (CTIO). That telescope is
operated by the Small and Moderate Aperature Research Telescope System
(SMARTS) consortium of universities and other organizations. During
that time period, we acquired five spectra with the 1.5m telescope, a
fiber fed echelle spectrograph, and a 2K SITe CCD. The spectra have a
resolving power of ∼25000 at 5500Å. The echelle spectrograms from
the 1.5m SMARTS telescope cover the wavelength range 4020-7300Å. We
chose to measure velocities in one of the reddest orders of the SMARTS
echelle spectrograms at a wavelength region near 7130Å.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 41 4 Basic properties of the program stars
table2.dat 37 30 Radial velocities of Hen 3-461
table5.dat 37 58 Radial velocities of SY Mus
table8.dat 37 18 Radial velocities of Hen 3-828
table11.dat 37 51 Radial velocities of AR Pav
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See also:
B/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)
III/150 : Perkins Revised MK Types for the Cooler Stars (Keenan+ 1989)
J/A+AS/146/407 : Symbiotic stars catalogue (Belczynski+, 2000)
J/A+AS/93/383 : UBVRIJHKL photometry of symbiotic stars (Munari+ 1992)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Star name
11- 15 F5.2 mag Vmag The V-band magnitude (1)
17- 20 F4.2 mag Kmag The K-band magnitude (1)
22 A1 --- f_Kmag [c] Flag when Kmag is from Glass & Webster
1973MNRAS.165...77G 1973MNRAS.165...77G
24- 27 F4.2 mag H-K The (H-K) color index (1)
29 A1 --- f_H-K [c] Flag when H-K is from Glass & Webster
1973MNRAS.165...77G 1973MNRAS.165...77G
31- 34 A4 --- SpT Cool star spectral type (2)
36- 41 F6.1 d Per Orbital period
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Note (1): Munari et al. 1992 (Cat. J/A+AS/93/383) unless otherwise indicated.
Note (2): Spectral class is from Murset & Schmid 1999A&AS..137..473M 1999A&AS..137..473M.
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Byte-by-byte Description of file: table[258].dat,table11.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.3 d HJD Heliocentric Julian Date (HJD-2400000)
11- 15 F5.3 --- Phase [0/1] Phase
17- 21 F5.1 km/s RV [-78.5/47] Radial velocity
23- 26 F4.1 km/s O-C [-6.6/4] The (O-C) residual
28- 30 F3.1 --- Weight [0.1/1]? Weight (only for SY Mus and AR Pav)
32- 37 A6 --- Obs Observatory (CASLEO, CTIO, Gem S, LSO, or MSO) (G1)
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Global Notes:
Note (G1): The observatory codes are defined as follows:
CASLEO = Complejo AStronomico el LEOncito;
Gem S = Gemini South Observatory (located at Cerro Pachon, Chile);
CTIO = Cerro Tololo Inter-American Observatory;
LSO = La Silla Observatory;
MSO = Mount Stromlo Observatory (located near Canberra, Australia).
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History:
From electronic version of the journal
References:
Fekel et al. Paper I. 2000AJ....119.1375F 2000AJ....119.1375F
Fekel et al. Paper II. 2000AJ....120.3255F 2000AJ....120.3255F
Fekel et al. Paper III. 2001AJ....121.2219F 2001AJ....121.2219F
Hinkle et al. Paper IV. 2006ApJ...641..479H 2006ApJ...641..479H
Fekel et al. Paper V. 2007AJ....133...17F 2007AJ....133...17F
Fekel et al. Paper VI. 2008AJ....136..146F 2008AJ....136..146F
Hinkle et al. Paper VII. 2009ApJ...692.1360H 2009ApJ...692.1360H
Fekel et al. Paper VIII. 2010AJ....139.1315F 2010AJ....139.1315F
Hinkle et al. Paper IX. 2013ApJ...770...28H 2013ApJ...770...28H
Fekel et al. Paper X. 2015AJ....150...48F 2015AJ....150...48F
Fekel et al. Paper XI. 2017AJ....153...35F 2017AJ....153...35F This catalog.
Hinkle et al. Paper XII. 2019ApJ...872...43H 2019ApJ...872...43H Cat. J/ApJ/872/43
(End) Sylvain Guehenneux [CDS] 22-Jun-2017