J/ApJS/273/7 Multimode delta Scuti stars from ZTF (Jia+, 2024)
Multimode δ Sct stars from the Zwicky Transient Facility Survey.
Jia Qi, Chen X., Wang S., Deng L., Luo Y., Jiang Q.
<Astrophys. J. Suppl. Ser., 273, 7 (2024)>
=2024ApJS..273....7J 2024ApJS..273....7J
ADC_Keywords: Stars, variable; Photometry; Optical
Keywords: Periodic variable stars ; Pulsating variable stars ;
Delta Scuti variable stars ; Stellar oscillations ;
Distance indicators ; Astronomy databases
Abstract:
We obtain the largest catalog of multimode δ Sct stars in the
northern sky to date using the Zwicky Transient Facility (ZTF) Data
Release 20. The catalog includes 2254 objects, of which 2181 are new
to our study. Among these multimode δ Sct stars, 2142 objects
are double-mode δ Sct, while 109 objects are triple-mode
δSct and three are quadruple-mode δ Sct. By analyzing the
light curves in the r and g bands of the ZTF, we determine the basic
parameters of multimode δ Sct stars, including the periods and
amplitudes. Periods are checked by comparison with the Optical
Gravitational Lensing Experiment catalog of double-mode δ Sct
stars. On the Petersen diagram, multimode δ Sct stars form six
sequences. We find that in Galactic coordinates, the periods of 1O/F
double-mode δ Sct stars at high latitudes are shorter than those
of 1O/F double-mode δ Sct stars in the disk, due to metallicity
variations. In the future, our catalog can be used to establish the
period-luminosity relation and the period- metallicity relation of
double-mode δ Sct stars, and to study the Galactic structure.
Description:
Based on ZTF DR2 (time span of ∼470days), Chen+ (2020, J/ApJS/249/18)
published a catalog with ∼780000 periodic variable stars. We selected
16709 δ Sct stars from this catalog, and crossmatched them with
the ZTF DR20 with a radius of 1" to obtain the g- and r-band photometry.
ZTF is a 48 inch Samuel Oschin Schmidt telescope at the Palomar
Observatory with a field of view of 47deg2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 88 112 Periods of triple- and quadruple-mode delta Scuti
stars
table4.dat 316 2254 Multi-mode delta Sct stars in ZTF DR20
table5.dat 86 73 Comparison of the first periods and second periods
of multimode δ Sct stars determined by
our catalog and the OGLE catalog
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See also:
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
I/358 : Gaia DR3 Part 4. Variability (Gaia Collaboration, 2022)
J/A+AS/144/469 : Delta Scuti stars (Rodriguez+, 2000)
J/A+A/394/97 : Johnson and Stromgren photometry of V784 Cas (Kiss+, 2002)
J/A+A/534/A125 : Variability of A- & F-stars from Kepler (Uytterhoeven+ 2011)
J/AJ/145/132 : New catalog of 1578 δ Scuti stars (Chang+, 2013)
J/AcA/63/379 : OGLE-III var. stars in Gal. disk area (Pietrukowicz+, 2013)
J/MNRAS/460/1970 : Kepler δ Sct stars amp. modulation (Bowman+, 2016)
J/MNRAS/485/2380 : Gaia-derived luminosities of Kepler stars (Murphy+, 2019)
J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)
J/AcA/71/189 : OGLE Galactic bulge and disk delta Scuti (Soszynski+, 2021)
J/MNRAS/523/2172 : TMTS delta Scuti stars (Lin+, 2023)
J/other/NatAs/7.1081 : Double-mode RR Lyrae stars data (Chen+, 2023)
http://www.ztf.caltech.edu/ : Zwicky Transient Facility homepage
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [ZTF]
4- 22 A19 --- ZTF ZTF object name (JHHMMSS.ss+DDMMSS.s)
24- 34 F11.7 deg RAdeg Right Ascension, decimal degrees (J2000)
36- 46 F11.7 deg DEdeg [-4/79] Declination, decimal degrees (J2000)
48- 56 F9.7 d F [0.045/0.236]? F mode period (1)
58- 66 F9.7 d 1O [0.034/0.221]? 1O mode period (1)
68- 76 F9.7 d 2O [0.032/0.184]? 2O mode period (1)
78- 86 F9.7 d 3O [0.022/0.154]? 3O mode period (1)
88 A1 --- Filt ZTF passband ("g" or "r")
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Note (1): A null value for a mode period indicates that this mode is not
detected.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [ZTF]
4- 22 A19 --- ZTF ZTF object name (JHHMMSS.ss+DDMMSS.s)
24- 34 F11.7 deg RAdeg Right Ascension (J2000)
36- 46 F11.7 deg DEdeg [-17.4/80] Declination (J2000)
48- 53 F6.3 mag rmagavg [12.4/20]? Mean magnitude in r band
55- 63 F9.7 d F [0.04/0.22]? F mode period in r band
65- 70 F6.4 --- F-psd-r [0.036/0.93]? Maximum power spectral density
(PSD) of F mode in r band
72- 79 F8.3 --- F-fap-r [-320/-5]? False alarm probabilities of F
mode in r band
81- 85 F5.3 mag F-amp-r [0.012/0.54]? Amplitude of F mode in r band
87- 95 F9.7 d 1O-r [0.032/0.221]? 1O mode period in r band
97- 102 F6.4 --- 1O-psd-r [0.03/0.95]? Maximum PSD of 1O mode in r band
104- 111 F8.3 --- 1O-fap-r [-320/-4.43]? False alarm probabilities of 1O
mode in r band
113- 117 F5.3 mag 1O-amp-r [0.01/0.5]? Amplitude of 1O mode in r band
119- 127 F9.7 d 2O-r [0.03/0.2]? 2O mode period in r band
129- 134 F6.4 --- 2O-psd-r [0.1/0.93]? Maximum PSD of 2O mode in r band
136- 143 F8.3 --- 2O-fap-r [-320/-10.7]? False alarm probabilities of 2O
mode in r band
145- 149 F5.3 mag 2O-amp-r [0.014/0.42]? Amplitude of 2O mode in r band
151- 159 F9.7 d 3O-r [0.022/0.16]? 3O mode period in r band
161- 166 F6.4 --- 3O-psd-r [0.1/0.77]? Maximum PSD of 3O mode in r band
168- 175 F8.3 --- 3O-fap-r [-200/-11.4]? False alarm probabilities of 3O
mode in r band
177- 181 F5.3 mag 3O-amp-r [0.013/0.4]? Amplitude of 3O mode in r band
183- 188 F6.3 mag gmagavg [12.4/20.6]? Mean magnitude in g band
190- 198 F9.7 d F-g [0.041/0.3]? F mode period in g band
200- 205 F6.4 --- F-psd-g [0.05/0.96]? Maximum PSD of F mode in g band
207- 214 F8.3 --- F-fap-g [-320/-6.78]? False alarm probabilities of F
mode in g band
216- 220 F5.3 mag F-amp-g [0.012/0.8]? Amplitude of F mode in g band
222- 230 F9.7 d 1O-g [0.032/0.23]? 1O mode period in g band
232- 237 F6.4 --- 1O-psd-g [0.033/0.97]? Maximum PSD of 1O mode in g band
239- 246 F8.3 --- 1O-fap-g [-320/-5.5]? False alarm probabilities of 1O
mode in g band
248- 252 F5.3 mag 1O-amp-g [0.01/0.7]? Amplitude of 1O mode in g band
254- 262 F9.7 d 2O-g [0.03/0.2]? 2O mode period in g band
264- 269 F6.4 --- 2O-psd-g [0.1/0.94]? Maximum PSD of 2O mode in g band
271- 278 F8.3 --- 2O-fap-g [-320/-10.1]? False alarm probabilities of 2O
mode in g band
280- 284 F5.3 mag 2O-amp-g [0.015/0.6]? Amplitude of 2O mode in g band
286- 294 F9.7 d 3O-g [0.022/0.15]? 3O mode period in g band
296- 301 F6.4 --- 3O-psd-g [0.1/0.77]? Maximum PSD of 3O mode in g band
303- 310 F8.3 --- 3O-fap-g [-235.3/-10.3]? False alarm probabilities of
3O mode in g band
312- 316 F5.3 mag 3O-amp-g [0.014/0.52]? Amplitude of 3O mode in g band
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [ZTF]
4- 22 A19 --- ZTF ZTF object name (JHHMMSS.ss+DDMMSS.s)
24- 32 F9.5 deg RAdeg [86.7/289] Right Ascension (J2000)
34- 42 F9.5 deg DEdeg [-13.1/21.1] Declination (J2000)
44- 53 F10.8 d OGLE-P1 [0.047/0.19] OGLE first period (1)
55- 63 F9.7 d ZTF-P1 [0.053/0.19] ZTF DR20 first period
65- 74 F10.8 d OGLE-P2 [0.041/0.19] OGLE second period (1)
76- 84 F9.7 d ZTF-P2 [0.041/0.19] ZTF DR20 second period
86- 86 A1 --- Flag Flag (2)
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Note (1): OGLE parameters are from Pietrukowicz+ 2020AcA....70..241P 2020AcA....70..241P
Note (2): Flags as follows:
a = ZTF-P1 equal to OGLE-P2 and ZTF-P2 equals to OGLE-P1
b = objects with similar P1 but different P2
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 26-Nov-2024