J/AJ/167/30 Variability in Protoplanetary Nebulae. X. (Hrivnak+, 2024)
Variability in Protoplanetary Nebulae.
X. Multiyear Periods as an Indicator of Potential Binaries.
Hrivnak B.J., Lu W., Henson G., Hillwig T.C.
<Astron. J., 167, 30 (2024)>
=2024AJ....167...30H 2024AJ....167...30H
ADC_Keywords: Nebulae; Stars, double and multiple; Photometry, VRI
Keywords: Post-asymptotic giant branch stars ; Evolved stars ; Binary
stars ; Long period variable stars ; RV Tauri variable stars
; Protoplanetary nebulae
Abstract:
New observations are presented of four evolved objects that display
long, multiyear variations in their light curves. These are
interpreted as good evidence of their binary nature, with the
modulation caused by the barycenter motion of the evolved star
resulting in a periodic obscuration by a circumbinary disk. Although
protoplanetary nebulae (PPNe) commonly possess bipolar nebulae, which
are thought to be shaped by a binary companion, there are very few
PPNe in which a binary companion has been found. Three of the objects
in this study appear to be PPNe, IRAS07253-2001, 08005-2356, and
17542-0603, with long periods of 5.2, 6.9, and 8.2yr, respectively.
The binary nature of IRAS08005-2356 has recently been confirmed by a
radial velocity study. Two samples, one of PPNe and the other of
post-AGB star candidates, are investigated for further evidence on how
common is a long- period light-curve variation. Both samples suggest
such light-curve variations are not common. The fourth object,
IRAS20056+1834 (QY Sge), is an obscured RV Tau variable of the RVb
subclass, with a long period of 3.9yr and pulsation periods of 102.9
and 51.5days. The period of this object is seen to vary by 2%.
Evidence is presented for a recent mass ejection in IRAS17542-0603.
Description:
Observations were carried out from the VUO using the 0.4m telescope
for the two objects that can be observed from our northerly latitude,
IRAS17542-0603 and 20056+1834. Observations of IRAS17542-0603 began in
1994, and those of IRAS20056+1834 began in 2003. Both were continued
through 2018.
Observations were also carried out for two of the three southern
hemisphere objects using two of the telescopes operated by the SARA,
of which Valparaiso University is a member. These were the 0.9 m
telescope at Kitt Peak, AZ (SARA-KP) and the 0.6m Lowell Telescope at
Cerro Tololo, Chile (SARA-CT). Observations were carried out from 2009
through 2018 using the V and RC filters.
These four objects were all observed as part of the All-Sky Automated
Survey for Supernovae (ASAS-SN) monitoring program. These observations
were made through V and g filters.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
objects.dat 49 3 Observed objects (built with table1)
tablea2.dat 48 689 Differential standard magnitudes
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See also:
II/118 : UBVRI standards around Celestial Equator (Landolt 1983)
II/183 : UBVRI Photometric Standards (Landolt 1992)
I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)
J/A+AS/90/327 : 1612MHz OH IRAS point sources (te Lintel Hekkert+ 1991)
J/AJ/126/2971 : UBVRI photometry of 131 Herbig Ae/Be (Vieira+, 2003)
J/A+A/458/173 : Optical spectroscopy of 253 IRAS sources (Suarez+, 2006)
J/A+A/496/813 : Binary PNe towards the Galactic bulge (Miszalski+, 2009)
J/ApJ/709/1042 : Variability in C-rich proto-PNe. (Hrivnak+, 2010)
J/ApJ/766/116 : Variability in proto-PNe. II. (Hrivnak+, 2013)
J/A+A/563/L10 : BD+33 2642 & HD112313 radial velocities (Van Winckel+, 2014)
J/ApJS/211/15 : SiO & H2O maser survey AGB & post-AGB stars (Yoon+, 2014)
J/MNRAS/447/1673 : Galactic post-AGB stars distances (Vickers+, 2015)
J/ApJ/832/125 : BVRI photometric obs. of PNe NGC6337 & Sp 1 (Hillwig+, 2016)
J/A+A/588/A25 : Post-AGB & CSPNe evolutionary model (Miller Bertolami, 2016)
J/A+A/600/L9 : NGC 1514 and LoTr 5 radial velocity curves (Jones+, 2017)
J/A+A/597/A129 : Galactic RV Tauri stars velocities (Manick+, 2017)
J/AJ/156/300 : Velocity & light curve analysis of 3 PPNe (Hrivnak+, 2018)
J/A+A/620/A85 : Binary post-AGB stars radial velocities (Oomen+, 2018)
J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)
J/ApJ/901/9 : Va in protoplanetary nebulae. VII. 5 LCs (Hrivnak+, 2020)
J/AJ/159/21 : V and Rc light curves of medium-bright PPNe (Hrivnak+, 2020)
J/A+A/642/A108 : PN G283.7-05.1 BVRI and RV curves (Jones+, 2020)
J/MNRAS/508/2226 : Binary central star of V510 Pup (Manick+, 2021)
J/A+A/658/A36 : Transition disks around evolved stars (Kluska+, 2022)
J/MNRAS/516/L61 : Galactic post-AGB stars in Gaia DR3 (Oudmaijer+, 2022)
Byte-by-byte Description of file: objects.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- IRAS Target IRAS identifier
12- 27 A16 --- 2MASS 2MASS identifier
29- 30 I2 h RAh [8/20] Hour of right ascension (J2000)
32- 33 I2 min RAm Minute of right ascension (J2000)
35- 38 F4.1 s RAs Second of right ascension (J2000)
40 A1 --- DE- [±] Sign of declination (J2000)
42- 43 I2 deg DEd Degree of declination (J2000)
45- 46 I2 arcmin DEm Arcminute of declination (J2000)
48- 49 I2 arcsec DEs Arcsecond of declination
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Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- IRAS IRAS ID of PPN Target
12- 21 F10.4 d HJDV [49557/58313]? Heliocentric Julian Date, V band
observation HJD-2400000
23- 28 F6.3 mag magV [-1.44/1.14]? Differential magnitude in V, offset
included (1)
30- 39 F10.4 d HJDR [49883/58313]? Heliocentric Julian Date, Rc band
observation HJD-2400000
41- 46 F6.3 mag magRc [-1.673/1.145]? Differential magnitude in Rc,
offset included (1)
48- 48 A1 --- Tel Telescope-Detector-Filter system code (2)
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Note (1): Typical uncertainty in the standardized differential magnitudes
is ± 0.015mag.
Note (2): Codes to identify the telescope-detector system used (associated
systematic offsets that were added to observed magnitudes to
translate values to the VUO-new system are given in Table A1) --
A = VUO-new (offset=0.00 mag);
B = VUO-old (assumed offset=0.000 mag);
C = SARA-KP U42;
D = SARA-KP ARC;
E = SARA-CT E6;
F = SARA-CT ARC;
G = SARA-CT FLI.
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History:
From electronic version of the journal
References:
Hrivnak et al. Paper I. 2010ApJ...709.1042H 2010ApJ...709.1042H Cat. J/ApJ/709/1042
Hrivnak et al. Paper II. 2013ApJ...766..116H 2013ApJ...766..116H Cat. J/ApJ/766/116
Hrivnak et al. Paper III. 2015ApJ...805...78H 2015ApJ...805...78H
Hrivnak et al. Paper IV. 2015AJ....149..184H 2015AJ....149..184H Cat. J/AJ/149/184
Hrivnak et al. Paper V. 2018AJ....156..300H 2018AJ....156..300H Cat. J/AJ/156/300
Hrivnak et al. Paper VI. 2020AJ....159...21H 2020AJ....159...21H Cat. J/AJ/159/21
Hrivnak et al. Paper VII. 2020ApJ...901....9H 2020ApJ...901....9H Cat. J/ApJ/901/9
Hrivnak et al. Paper VIII. 2021AJ....162..248H 2021AJ....162..248H
Hrivnak et al. Paper IX. 2022ApJ...939...32H 2022ApJ...939...32H Cat. J/ApJ/939/32
Hrivnak et al. Paper X. 2024AJ....167...30H 2024AJ....167...30H This catalog
(End) Prepared by [AAS], Coralie Fix [CDS], 22-Apr-2024