The evolutionary status of the UX Orionis star RZ Piscium
arXiv:1109.2711 · doi:10.1051/0004-6361/201014889
Abstract
The star RZ Psc is one of the most enigmatic members of the UX Ori star family. It shows all properties that are typical for these stars (the light variability, high linear polarization in deep minima, the blueing effect) except for one: it lacks any signatures of youth. With the Li I line, as a rough estimate for the stellar age, we show that the "lithium" age of RZ Psc lies between the age of stars in the Pleiades (approximately 70 Myr) and the Orion (approximately 10 Myr) clusters. We also roughly estimated the age of RZ Psc based on the proper motion of the star using the Tycho-2 catalog. We found that the star has escaped from its assumed birthplace near to the Galactic plane about 30-40 Myr ago. We conclude that RZ Psc is a post-UXOr star, and its sporadic eclipses are caused by material from the debris disk.
References in corpus (3)
Cited by in corpus (12)
- A Comprehensive Census of Nearby Infrared Excess Stars
- The transiting dust clumps in the evolved disk of the Sun-like UXor RZ Psc
- An active asteroid belt causing the UX Ori phenomenon in RZ Psc
- Planetesimals Around Stars with TESS (PAST): I. Transient Dimming of a Binary Solar Analog at the End of the Planet Accretion Era
- Is the Young Star RZ Piscium Consuming Its Own (Planetary) Offspring?
- Accretion and outflow activity on the late phases of pre-main-sequence evolution. The case of RZ Piscium
- Flares of accretion activity of the 20 Myr old UXOR RZ Psc
- A low-mass stellar companion to the young variable star RZ Psc
- Spectroscopic classification of X-ray sources in the Galactic Bulge Survey
- The young low-mass star ISO-Oph-50: Extreme variability induced by a clumpy, evolving circumstellar disk
- Clumpy dust rings around non-accreting young stars
- Magnetospheric accretion at the late phases of the Pre-Main-Sequence evolution. The case of RZ Psc