The DECam Minute Cadence Survey I
arXiv:1607.08773 · doi:10.1093/mnras/stw1834
Abstract
We present the first results from a minute cadence survey of a three square degree field obtained with the Dark Energy Camera. We imaged part of the Canada-France-Hawaii Telescope Legacy Survey area over eight half-nights. We use the stacked images to identify 111 high proper motion white dwarf candidates with g mag and search for eclipse-like events and other sources of variability. We find a new g = 20.64 mag pulsating ZZ Ceti star with pulsation periods of 11-13 min. However, we do not find any transiting planetary companions in the habitable zone of our target white dwarfs. Given the probability of eclipses of 1% and our observing window from the ground, the non-detection of such companions in this first field is not surprising. Minute cadence DECam observations of additional fields will provide stringent constraints on the frequency of planets in the white dwarf habitable zone.
arXiv comment12 pages, 11 figures, 5 tables, accepted in MNRAS
References in corpus (29)
- The USNO-B Catalog
- First Results from the Catalina Real-time Transient Survey
- The MACHO Project: Microlensing Results from 5.7 Years of LMC Observations
- The PPMXL catalog of positions and proper motions on the ICRS. Combining USNO-B1.0 and 2MASS
- Exploring the Optical Transient Sky with the Palomar Transient Factory
- A Tidally-Disrupted Asteroid Around the White Dwarf G29-38
- A disintegrating minor planet transiting a white dwarf
- Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements
- Spectroscopic Analysis of DA White Dwarfs: Stark Broadening of Hydrogen Lines Including Non-Ideal Effects
- A Comprehensive Spectroscopic Analysis of DB White Dwarfs
- A Spectroscopic Survey & Analysis of Bright, Hydrogen-Rich White Dwarfs
- SDSS Standard Star Catalog for Stripe 82: the Dawn of Industrial 1% Optical Photometry
- The Link Between Planetary Systems, Dusty White Dwarfs, and Metal Polluted White Dwarfs
- Know Your Neighborhood: A Detailed Model Atmosphere Analysis of Nearby White Dwarfs
- Spectroscopic analysis of DA white dwarfs with 3D model atmospheres
- Supernova Simulations and Strategies For the Dark Energy Survey
- Simulations of two-planet systems through all phases of stellar evolution: implications for the instability boundary and white dwarf pollution
- A 12 minute Orbital Period Detached White Dwarf Eclipsing Binary
- Transit surveys for Earths in the habitable zones of white dwarfs
- Drifting Asteroid Fragments Around WD 1145+017
- High-speed photometry of the disintegrating planetesimals at WD1145+017: evidence for rapid dynamical evolution
- Cool White Dwarfs in the Sloan Digital Sky Survey
- First Results from Pan-STARRS1: Faint, High Proper Motion White Dwarfs in the Medium-Deep Fields
- Solution to the problem of the surface gravity distribution of cool DA white dwarfs from improved 3D model atmospheres
- PSR J1738+0333: The First Millisecond Pulsar + Pulsating White Dwarf Binary
- Re-defining the Empirical ZZ Ceti Instability Strip
- A Detailed Model Atmosphere Analysis of Cool White Dwarfs in the Sloan Digital Sky Survey
- Ultracool white dwarfs and the age of the Galactic disc
- Discovery of ZZ Cetis in detached white dwarf plus main-sequence binaries