Census of Variable Stars toward Serpens Main
arXiv:2106.06355 · doi:10.3847/1538-3881/abfdcd
Abstract
We have monitored a 3 deg2 area toward Serpens Main in the Pan-STARRS1 r, i, and z bands from 2016 April to September. Light curves of more than 11,000 stars in each band were obtained, and 143 variables have been identified. Among those, 119 variables are new discoveries, while 24 variables were previously known. We present variability classes and periods of 99 stars. Of these, 81 are located in the upper giant branch, displaying long periods, while the remaining 18 variables are pre-main-sequence objects with short periods. We also identify eight eclipsing binary systems, including the known binary V0623 Ser, and derive their physical parameters. According to a clustering analysis of Gaia DR2 stars in the observed field, there are 10 variable members in Serpens Main, where six members have been classified as young stellar objects in previous studies. Here we provide color-magnitude and color-color diagrams for these variables. The color variability of most variables in the color-magnitude diagrams produce the expected displacements, while the movements of cluster members point in different directions; this behavior may be associated with accretion spots or circumstellar disks.
35 pages, accepted by AJ; typos corrected
References in corpus (22)
- Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
- A Spitzer Survey of Young Stellar Clusters within One Kiloparsec of the Sun: Cluster Core Extraction and Basic Structural Analysis
- The Optical to Mid-Infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS and WISE Surveys
- Physics Of Eclipsing Binaries. II. Towards the Increased Model Fidelity
- Constraining the thermally-pulsing asymptotic giant branch phase with resolved stellar populations in the Small Magellanic Cloud
- Results of the ROTOR-program. I. The long-term photometric variability of classical T Tauri stars
- The Gould's Belt Distances Survey (GOBELINS) III. The distance to the Serpens/Aquila Molecular Complex
- A Combined Spitzer and Chandra Survey of Young Stellar Objects in the Serpens Cloud Core
- A modular set of synthetic spectral energy distributions for young stellar objects
- Young Stellar Object Variability (YSOVAR): Long Timescale Variations in the Mid-Infrared
- Photometric variability of the T Tauri star TW Hya on time scales of hours to years
- Variable stars across the observational HR diagram
- CARMA Large Area Star Formation Survey: Structure and Kinematics of Dense Gas in Serpens Main
- An initial overview of the extent and structure of recent star formation within the Serpens Molecular Cloud using Gaia Data Release 2
- POISSON project - III - Investigating the evolution of the mass accretion rate
- YSOVAR: Mid-IR variability in the star forming region Lynds 1688
- The JCMT Transient Survey: Detection of sub-mm variability in a Class I protostar EC 53 in Serpens Main
- The Million Optical - Radio/X-ray Associations (MORX) Catalogue
- Variability of young stellar objects in the star-forming region Pelican Nebula
- Disentangling effective temperatures of individual eclipsing binary components by means of color-index constraining
- Young Stellar Clusters Containing Massive Young Stellar Objects in the VVV Survey
- Identifying Variability in Deeply Embedded Protostars with ALMA and CARMA