2010A&A...524A...8G


Query : 2010A&A...524A...8G

2010A&A...524A...8G - Astronomy and Astrophysics, volume 524, A8-8 (2010/12-1)

The evolutionary status of the UX Orionis star RZ Piscium.

GRININ V.P., POTRAVNOV I.S. and MUSAEV F.A.

Abstract (from CDS):

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 lithium line 6708Å 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 (∼70Myr) and the Orion (∼10Myr) 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 30-40Myr ago. We conclude that RZ Psc is a post-UXOr star, and its sporadic eclipses are caused by material from the debris disk.

Abstract Copyright:

Journal keyword(s): stars: individual: RZ Psc

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME SGP reg 00 51 26.275 -27 07 41.70           ~ 522 0
2 V* RZ Psc Ae* 01 09 42.0523474164 +27 57 01.912133808   12.20 11.29     G8V 69 0
3 V* V718 Per Y*O 03 44 39.2354379092 +32 07 35.556843084   17.90     13.033 K3 54 0
4 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3104 0
5 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2776 0
6 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2067 1
7 NAME Gould Belt PoG ~ ~           ~ 767 1

    Equat.    Gal    SGal    Ecl

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2021.07.29-02:44:33

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