J/ApJS/227/6 LCs re-analysis of Mira variables in ASAS (Vogt+, 2016)
Determination of pulsation periods and other parameters of 2875 stars
classified as Mira in the All Sky Automated Survey (ASAS).
Vogt N., Contreras-Quijada A., Fuentes-Morales I., Vogt-Geisse S.,
Arcos C., Abarca C., Agurto-Gangas C., Caviedes M., Dasilva H., Flores J.,
Gotta V., Penaloza F., Rojas K., Villasenor J.I.
<Astrophys. J. Suppl. Ser., 227, 6-6 (2016)>
=2016ApJS..227....6V 2016ApJS..227....6V (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Stars, late-type ; Photometry
Keywords: methods: data analysis; stars: late-type; stars: variable: general
Abstract:
We have developed an interactive PYTHON code and derived crucial
ephemeris data of 99.4% of all stars classified as "Mira" in the ASAS
database, referring to pulsation periods, mean maximum magnitudes, and
whenever possible, the amplitudes among others. We present a
statistical comparison between our results and those given by the
International Variable Star Index (VSX) of the American Association of
Variable Star Observers, as well as those determined with the machine
learning automatic procedure of Richards et al. (2012, J/ApJS/203/32).
Our periods are in good agreement with those of the VSX in more than
95% of the stars. However, when comparing our periods with those of
Richards et al., the coincidence rate is only 76% and most of the
remaining cases refer to aliases. We conclude that automatic codes
still require more refinements in order to provide reliable period
values. Period distributions of the target stars show three local
maxima around 215, 275, and 330 days, apparently of universal
validity; their relative strength seems to depend on galactic
longitude. Our visual amplitude distribution turns out to be bimodal,
however, 1/3 of the targets have rather small amplitudes (A<2.5m)
and could refer to semiregular variables (SR). We estimate that about
20% of our targets belong to the SR class. We also provide a list of
63 candidates for period variations and a sample of 35 multiperiodic
stars that seem to confirm the universal validity of typical sequences
in the double period and in the Petersen diagrams.
Description:
The ASAS database (All Sky Automated Survey, Pojmanski 2002, II/264)
is the outcome of a sky patrol program with CCD photometry, conducted
at the Las Campanas Observatory, Chile, between 2000 and 2009
(-90≤DEC≤+28°). The visual limiting magnitude is about 14.5m
and a total of up to 500 measurements per star are available. An
automatic procedure identified 50122 ASAS variable stars and
classified part of them according to their type of variability. A
total of 2895 variables are listed as Mira stars in this database.
The aim of this paper is to re-analyze the light curves of all stars
classified as Mira in ASAS.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 86 2875 Parameters of Mira stars, as determined with
our method
table2.dat 393 5750 Cycle count numbers E vs. Tmax,i (HJD-2450000)
and E vs. Mmax,i (V magnitude) at each
individual maximum of all stars
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See also:
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)
II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)
J/A+A/592/A42 : A study of dust nucleation in Mira. Part I (Kaminski+, 2016)
J/MNRAS/455/2216 : Outer bulge O-rich Mira's JHKL photometry (Catchpole+, 2016)
J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)
J/A+A/556/A38 : Period-mass-loss rate relation of Miras (Uttenthaler, 2013)
J/ApJS/203/32 : Machine-learned ASAS Classif. Cat. (MACC) (Richards+, 2012)
J/other/NewA/17.504 : Mira variables om ROTSE-IIId (Yesilyaprak+, 2012)
J/other/OEJV/149 : New Miras in Galactic Bulge (Hummerich+ 2012)
J/MNRAS/418/114 : Opacity-sampling models of Mira variables (Ireland+, 2011)
J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)
J/other/PZP/9.3 : Light elements for 25 Mira variables (Kazarovets+, 2009)
J/MNRAS/386/313 : IR observations of Mira variables (Whitelock+, 2008)
J/AJ/130/776 : Secular evolution in Mira pulsations (Templeton+, 2005)
J/ApJ/620/961 : Diameters of Mira stars in JHK' bands (Millan-Gabet+, 2005)
J/A+A/384/925 : Compiled cat. of stellar data of Miras (Kharchenko+, 2002)
J/MNRAS/317/460 : Kinematics of Mira stars (Feast+, 2000)
J/A+AS/120/275 : Mira variables light curves (Alard+ 1996)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ASAS ASAS identifier (HHMMSS+DDMM.m; J2000)
15- 34 A20 --- Name Alternative name
36- 41 F6.1 d T0 Moment of first maximum; JD-2450000
43- 46 F4.1 d e_T0 Mean error in T0
48- 53 F6.2 d Per [65.3/816.8] Period
55- 59 F5.2 d e_Per [0.02/21] Mean error in Per
61- 64 F4.1 d sigT [1/65.5] Standard deviation corresponds
to mean (O-C)
66- 70 F5.2 mag Vmax [4/14.2] Mean V band magnitude a maximum light
72- 75 F4.2 mag e_Vmax [0.03/1.3] Mean error in Vmax
77- 83 F7.2 mag Amp [/6.3]?=-999.99 Amplitude in V band
85- 86 I2 --- Num [3/28] Total number of maxima observed
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ASAS ASAS identifier (HHMMSS+DDMM.m; J2000)
15- 34 A20 --- Name Alternative name
36- 41 A6 --- Evs E vs. Tmax,i (Tmax,i) or vs. Mmax,i (Mmax,i)
43- 49 F7.2 --- CC1 ?=-999.99 Cycle count 1 at Evs
51- 57 F7.2 --- CC2 ?=-999.99 Cycle count 2 at Evs
59- 65 F7.2 --- CC3 ?=-999.99 Cycle count 3 at Evs
67- 73 F7.2 --- CC4 ?=-999.99 Cycle count 4 at Evs
75- 81 F7.2 --- CC5 ?=-999.99 Cycle count 5 at Evs
83- 89 F7.2 --- CC6 ?=-999.99 Cycle count 6 at Evs
91- 97 F7.2 --- CC7 ?=-999.99 Cycle count 7 at Evs
99-105 F7.2 --- CC8 ?=-999.99 Cycle count 8 at Evs
107-113 F7.2 --- CC9 ?=-999.99 Cycle count 9 at Evs
115-121 F7.2 --- CC10 ?=-999.99 Cycle count 10 at Evs
123-129 F7.2 --- CC11 ?=-999.99 Cycle count 11 at Evs
131-137 F7.2 --- CC12 ?=-999.99 Cycle count 12 at Evs
139-145 F7.2 --- CC13 ?=-999.99 Cycle count 13 at Evs
147-153 F7.2 --- CC14 ?=-999.99 Cycle count 14 at Evs
155-161 F7.2 --- CC15 ?=-999.99 Cycle count 15 at Evs
163-169 F7.2 --- CC16 ?=-999.99 Cycle count 16 at Evs
171-177 F7.2 --- CC17 ?=-999.99 Cycle count 17 at Evs
179-185 F7.2 --- CC18 ?=-999.99 Cycle count 18 at Evs
187-193 F7.2 --- CC19 ?=-999.99 Cycle count 19 at Evs
195-201 F7.2 --- CC20 ?=-999.99 Cycle count 20 at Evs
203-209 F7.2 --- CC21 ?=-999.99 Cycle count 21 at Evs
211-217 F7.2 --- CC22 ?=-999.99 Cycle count 22 at Evs
219-225 F7.2 --- CC23 ?=-999.99 Cycle count 23 at Evs
227-233 F7.2 --- CC24 ?=-999.99 Cycle count 24 at Evs
235-241 F7.2 --- CC25 ?=-999.99 Cycle count 25 at Evs
243-249 F7.2 --- CC26 ?=-999.99 Cycle count 26 at Evs
251-257 F7.2 --- CC27 ?=-999.99 Cycle count 27 at Evs
259-265 F7.2 --- CC28 ?=-999.99 Cycle count 28 at Evs
267-273 F7.2 --- CC29 ?=-999.99 Cycle count 29 at Evs
275-281 F7.2 --- CC30 ?=-999.99 Cycle count 30 at Evs
283-289 F7.2 --- CC31 ?=-999.99 Cycle count 31 at Evs
291-297 F7.2 --- CC32 ?=-999.99 Cycle count 32 at Evs
299-305 F7.2 --- CC33 ?=-999.99 Cycle count 33 at Evs
307-313 F7.2 --- CC34 [-999.99] Cycle count 34 at Evs
315-321 F7.2 --- CC35 [-999.99] Cycle count 35 at Evs
323-329 F7.2 --- CC36 ?=-999.99 Cycle count 36 at Evs
331-337 F7.2 --- CC37 [-999.99] Cycle count 37 at Evs
339-345 F7.2 --- CC38 [-999.99] Cycle count 38 at Evs
347-353 F7.2 --- CC39 [-999.99] Cycle count 39 at Evs
355-361 F7.2 --- CC40 [-999.99] Cycle count 40 at Evs
363-369 F7.2 --- CC41 ?=-999.99 Cycle count 41 at Evs
371-377 F7.2 --- CC42 [-999.99] Cycle count 42 at Evs
379-385 F7.2 --- CC43 [-999.99] Cycle count 43 at Evs
387-393 F7.2 --- CC44 ?=-999.99 Cycle count 44 at Evs
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 05-Jan-2017