SIMBAD references

2014ApJ...785L..23Z - Astrophys. J., 785, L23 (2014/April-3)

The first hypervelocity star from the LAMOST survey.

ZHENG Z., CARLIN J.L., BEERS T.C., DENG L., GRILLMAIR C.J., GUHATHAKURTA P., LEPINE S., NEWBERG H.J., YANNY B., ZHANG H., LIU C., JIN G. and ZHANG Y.

Abstract (from CDS):

We report the first hypervelocity star (HVS) discovered from the LAMOST spectroscopic survey. It is a B-type star with a heliocentric radial velocity of about 620 km/s, which projects to a Galactocentric radial velocity component of ∼477 km/s. With a heliocentric distance of ∼13 kpc and an apparent magnitude of ∼13 mag, it is the closest bright HVS currently known. With a mass of ∼9 M, it is one of the three most massive HVSs discovered so far. The star is clustered on the sky with many other known HVSs, and its position suggests a possible connection to Galactic center structures. With the current poorly determined proper motion, a Galactic center origin of this HVS remains consistent with the data at the 1σ level, while a disk runaway origin cannot be excluded. We discuss the potential of the LAMOST survey to discover a large statistical sample of HVSs of different types.

Abstract Copyright:

Journal keyword(s): Galaxy: center - Galaxy: disk - Galaxy: halo - Galaxy: kinematics and dynamics - stars: early-type - stars: individual: J091206.52+091621.8

Nomenclature: LAMOST-HVSN (No. HVS1).

Simbad objects: 7

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2022.08.17-18:49:29

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