Double-mode Cepheids from the Zwicky Transient Facility Survey

@article{Shah2022DoublemodeCF,
  title={Double-mode Cepheids from the Zwicky Transient Facility Survey},
  author={Vishwa Munir Shah and Xiaodian Chen and Richard de Grijs},
  journal={The Astronomical Journal},
  year={2022},
  volume={164}
}
Multimode Cepheids pulsate simultaneously in more than one mode of oscillation. They provide an independent means to test stellar models and pulsation theories. They can also be used to derive metallicities. In recent years, the number of known multimode Cepheids has increased dramatically with the discovery of a large number of Galactic double-mode Cepheids. To date, 209 double-mode Cepheids have been detected in the Galactic bulge and disk, mostly based on the Optical Gravitational Lensing… 

References

SHOWING 1-10 OF 25 REFERENCES

OGLE-GAL-ACEP-091: The First Known Multi-mode Anomalous Cepheid

Anomalous Cepheids (ACs) are metal-deficient, core-helium-burning pulsating stars with masses in the range 1.2–2.2 . Until recently, all known ACs were pure single-mode pulsators. The first candidate

The Zwicky Transient Facility Catalog of Periodic Variable Stars

The number of known periodic variables has grown rapidly in recent years. Thanks to its large field of view and faint limiting magnitude, the Zwicky Transient Facility (ZTF) offers a unique

TESS Observations of Cepheid Stars: First Light Results

We present the first analysis of Cepheid stars observed by the TESS space mission in Sectors 1–5. Our sample consists of 25 pulsators: ten fundamental mode, three overtone and two double-mode

The ASAS-SN catalogue of variable stars – V. Variables in the Southern hemisphere

The All-Sky Automated Survey for Supernovae (ASAS-SN) provides long baseline (∼4 yr) light curves for sources brighter than V ≲ 17 mag across the whole sky. As part of our effort to characterize

The chemical composition of Galactic beat Cepheids

Frequency analysis of double-mode cepheids

Toward a Resolution of the Bump and Beat Cepheid Mass Discrepancies

The extant beat and bump Cepheid mass discrepancy problems are reexamined with the new opacities of Iglesias and Rogers. Compared to calculations with the Los Alamos opacities, the period ratios P 1

Studies in astronomical time series analysis. II - Statistical aspects of spectral analysis of unevenly spaced data

This paper studies the reliability and efficiency of detection with the most commonly used technique, the periodogram, in the case where the observation times are unevenly spaced to retain the simple statistical behavior of the evenly spaced case.

An Introduction to Distance Measurement in Astronomy

Distance determination is an essential technique in astronomy, and is briefly covered in most textbooks on astrophysics and cosmology. It is rarely covered as a coherent topic in its own right. When

The MACHO Project LMC Variable Star Inventory. VI. The Second Overtone Mode of Cepheid Pulsation From First/Second Overtone Beat Cepheids

MACHO Project photometry of 45 LMC first and second overtone (FO and SO, respectively) beat Cepheids that pulsate in the FO and SO has been analyzed to determine the light-curve characteristics for