Periodic variable A-F spectral type stars in the northern TESS continuous viewing zone. I. Identification and classification [PDF]
Astronomy & Astrophysics, 2022 The goal of our study is to provide a reliable classification of variability of A-F stars brighter than 11 mag located in the northern TESS continuous viewing zone. We also aim at thorough discussion about issues in the classification related to the data
M. Skarka +13 more
semanticscholar +1 more source
Investigating Stellar Variability in the Open Cluster Region NGC 381
The Astronomical Journal, 2023 We study variable stars in the field of the open cluster NGC 381 using photometric data observed over 27 nights and identify a total of 57 variable stars, six of which are member stars. The variable stars are classified based on their periods, amplitudes,
Jayanand Maurya +3 more
doaj +1 more source
A Catalog of New Slowly Pulsating B-type Stars
The Astrophysical Journal Supplement Series, 2023 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.
Xiang-dong Shi +3 more
doaj +1 more source
Highlights of Discoveries for δ Scuti Variable Stars From the Kepler Era [PDF]
Frontiers in Astronomy and Space Sciences, 2021 The NASA Kepler and follow-on K2 mission (2009–2018) left a legacy of data and discoveries, finding thousands of exoplanets, and also obtaining high-precision long time-series data for hundreds of thousands of stars, including many types of pulsating ...
J. Guzik
semanticscholar +1 more source
Variable Stars in the Giant Satellite Galaxy Antlia 2 [PDF]
Astrophysical Journal, 2021 We report 350 pulsating variable stars found in four DECam fields (∼12 deg2) covering the Antlia 2 satellite galaxy. The sample of variables includes 318 RR Lyrae stars and eight anomalous Cepheids in the galaxy.
A. K. Vivas +5 more
semanticscholar +1 more source
The Astronomical Journal, 2023 We present a detailed analysis of an eclipsing double-lined binary FX UMa based on TESS photometry and newly acquired spectroscopic observations. The radial velocities and atmospheric parameters for each component star are obtained from the SONG high ...
Kun Wang +5 more
doaj +1 more source
The Secret Lives of Cepheids: δ Cep—The Prototype of a New Class of Pulsating X-Ray Variable Stars [PDF]
, 2017 From our Secret Lives of Cepheids program, the prototype Classical Cepheid, δ Cep, is found to be an X-ray source with periodic pulsation-modulated X-ray variations.
S. Engle +6 more
semanticscholar +1 more source
Asteroseismic analysis of variable hot subdwarf stars observed with TESS [PDF]
Astronomy & Astrophysics, 2021 Context. We present photometric and spectroscopic analyses of gravity (g-mode) long-period pulsating hot subdwarf B (sdB) stars, also called V1093 Her stars, observed by the TESS space telescope in both 120 s short-cadence and 20 s ultra-short-cadence ...
M. Uzundag +10 more
semanticscholar +1 more source
Pulsating stars in NGC 6231 Frequency analysis and photometric mode identification near the main sequence [PDF]
, 2013 We used Johnson UBV photometric CCD observations to identify pulsating and other variable stars in the young open cluster NGC 6231. The multi-color information was used to classify pulsating variables, perform frequency analysis, and - where possible ...
Handler, Gerald +2 more
core +1 more source
A search for variable subdwarf B stars in TESS Full Frame Images – II. Variable objects in the northern ecliptic hemisphere [PDF]
, 2021 We report the results of our search for pulsating subdwarf B stars in Full Frame Images collected during Year 2 of the TESS mission and covering the northern ecliptic hemisphere. This is a continuation of our effort we presented in Paper I.
A. Baran +3 more
semanticscholar +1 more source