J/ApJS/268/16 Slowly pulsating B stars from TESS, LAMOST & Gaia DR3 (Shi+, 2023)
A catalog of new slowly pulsating B-type stars.
Shi X.-D., Qian S.-B., Zhu L.-Y., Li L.-J.
<Astrophys. J. Suppl. Ser., 268, 16 (2023)>
=2023ApJS..268...16S 2023ApJS..268...16S
ADC_Keywords: Stars, variable; Parallaxes, trigonometric; Photometry; Optical;
Effective temperatures; Stars, B-type
Keywords: Pulsating variable stars ; Massive stars
Abstract:
This paper reports the discovery of new slowly pulsating B-type stars.
Based on the photometric, spectral, and astrometric data of the TESS,
LAMOST, and Gaia surveys, we have found 286 new slowly pulsating
B-type (SPB) stars and 21 candidates. Among these, 20 are Be stars or
candidates with emission-line profiles. It is shown that these SPB
stars have luminosities between 40 and 2850L☉ and effective
temperatures ranging from 10000 to 21000K. Their pulsation periods are
from 0.14 to 6.5d with amplitude ranges of 0.2-20mmag in the TESS
band. It is indicated that these targets follow the distribution of
the SPB stars in the period-luminosity and the period-temperature
diagrams. Their positions on the H-R diagram reveal that most of these
pulsators are distributed in the instability region of SPB stars, in
the main-sequence evolutionary stage, and with mass ranges of
2.5-7M☉. However, there are some targets beyond the red edge of
the theoretical instability region, which should be caused by the
rapid rotation reducing the measured effective temperature. The
discovery of these new SPB stars increases the total number by over
60%, which are significant samples for further investigating the
structure and evolution of intermediate-mass and even massive stars by
asteroseismology.
Description:
This work continues the previous work (Paper I; Shi+ 2023, J/ApJS/265/33)
and expands the samples to the TESS FFI data processed by the Science
Processing Operations Center (SPOC).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 78 286 The catalog of new slowly pulsating B-type (SPB)
stars observed by TESS, LAMOST, and GAIA
table2.dat 51 21 The candidates of SPB stars observed by TESS,
LAMOST, and Gaia
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See also:
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
V/156 : LAMOST DR7 catalogs (Luo+, 2019)
IV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/A+A/393/965 : Intrinsic freq. of slowly pulsating B stars (de Cat+, 2002)
J/A+A/463/243 : Variations of O-B stars in Mercator obs. (De Cat+, 2007)
J/A+A/506/471 : Frequency analysis of CoRoT B stars (Degroote+, 2009)
J/A+A/580/A27 : Asteroseismology of KIC 10526294 (Moravveji+, 2015)
J/MNRAS/475/478 : delta Scuti pulsating stars LAMOST views (Qian+, 2018)
J/ApJS/235/5 : EA-type eclipsing binaries observed by LAMOST (Qian+, 2018)
J/AJ/156/102 : The TESS Input Cat. & Candidate Target List (Stassun+, 2018)
J/MNRAS/485/2380 : Gaia-derived luminosities of Kepler stars (Murphy+, 2019)
J/ApJ/872/L9 : TESS obs. of massive O and B stars (Pedersen+, 2019)
J/ApJS/244/43 : Binary stars param. from LAMOST & Kepler obs. (Zhang+, 2019)
J/MNRAS/493/5871 : TESS A and B stars and the Maia variables (Balona+, 2020)
J/A+A/639/A81 : Variability of OB stars (Burssens+, 2020)
J/MNRAS/495/2738 : Luminosities of slowly pulsating B stars (Pedersen+, 2020)
J/other/RAA/20.163 : Contact binaries in LAMOST DR7 (Qian+, 2020)
J/ApJS/257/54 : Early-type star param. from LAMOST LRS & MRS (Guo+, 2021)
J/AJ/161/46 : (O-C) curve of the binary system KIC 06852488 (Shi+, 2021)
J/ApJS/259/50 : EA-type eclipsing binaries observed by TESS (Shi+, 2022)
J/A+A/662/A66 : Hot stars from LAMOST DR6 (Xiang+, 2022)
J/ApJS/265/33 : OB pulsating stars with TESS, LAMOST & Gaia (Shi+, 2023)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- TIC [1940542/470555672] TESS identifier
11- 14 F4.2 mas plx [0.26/3.4] Parallax (G1)
16- 20 F5.2 mag Vmag [7.7/13.85] Apparent V band magnitude (G1)
22- 26 I5 K Teff [10651/20975] Effective temperature
28- 30 I3 K e_Teff [66/717]? Uncertainty in Teff
32 I1 --- r_Teff [1/3] Source flag for Teff (1)
34- 36 A3 --- Be Be = Hα emission-line profile detected
from LAMOST
38- 41 F4.2 [Lsun] logL [1.49/3.44] log luminosity
43- 45 A3 --- OT Always "SPB"
47 A1 --- f_TIC C = may be contaminated by nearby stars
in the TESS photometry apertures
49- 57 F9.7 d Per [0.13/6.6] Period
59- 67 F9.7 d e_Per [1e-07/0.0002] Uncertainty in Per
69- 73 F5.2 mmag Amp [0.19/18.72] Amplitude
75- 78 F4.2 mmag e_Amp [0.01/0.2] Uncertainty in Amp
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Note (1): Source flag of effective temperature as follows:
1 = Gaia Extended Stellar Parametrizer for Hot Stars (ESP-HS)
2 = LAMOST derived by Xiang+ 2022, J/A+A/662/A66 (LAMOST_Xiang)
3 = LAMOST derived by Guo+ 2021, J/ApJS/257/54 (LAMOST_Guo)
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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- 9 I9 --- TIC [2105067/470536821] TESS identifier
11- 14 F4.2 mas plx [0.54/2.48] Parallax (G1)
16- 21 F6.3 mag Vmag [9.52/12.92] Apparent V band magnitude (G1)
23- 27 I5 K Teff [10908/19404] Effective temperature
29- 31 I3 K e_Teff [72/666] Teff uncertainty
33 I1 --- r_Teff [1] Always "1" = Gaia ESP-HS
35- 36 A2 --- Be Be = Hα emission-line profile detected
from LAMOST
38- 41 F4.2 [Lsun] logL [1.74/3.3] Log of the luminosity
43- 49 A7 --- OT Object type (1)
51 A1 --- f_TIC C = may be contaminated by nearby stars in the
TESS photometry apertures
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Note (1): Object type as follows:
SPB? = slowly pulsating B-type candidate (12 occurrences)
SPB+ROT = an SPB star is in a system of rotational variable (6 occurrences)
SPB+EB = an SPB star is in a system of eclipsing binary (3 occurrences)
See Section 3.1.
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Global notes:
Note (G1): The parallax and the visual magnitude are from Gaia DR3 (I/355) and
the TESS Input Catalog (see IV/38) or SIMBAD.
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History:
From electronic version of the journal
References:
Shi et al. Paper I. 2023ApJS..265...33S 2023ApJS..265...33S Cat. J/ApJS/265/33
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 21-Nov-2023