# Quasars in the Galactic Anti-Center Area from the LAMOST DR3

## TL;DR

This paper reports the discovery of 151 quasars in the Galactic Anti-Center area using LAMOST DR3, including 80 new quasars, which aids in Galactic studies and astrometric reference frame construction.

## Contribution

The study presents a new sample of bright quasars in the GAC region, with 80 newly discovered quasars, expanding the known quasar distribution near the Galactic disk.

## Key findings

- 151 quasars identified in the GAC region
- 80 quasars are newly discovered with LAMOST
- Bright quasars suitable for Galactic and astrometric studies

## Abstract

We present a sample of quasars discovered in the area of Galactic Anti-Center (GAC) of $150^{\circ} \leq l \leq 210^{\circ}$ and $|b| \leq 30^{\circ}$, based on the LAMOST Data Release 3 (DR3). The sample contains 151 spectroscopically confirmed quasars. Among them 80 are newly discovered with the LAMOST. All those quasars are very bright, with $i$ magnitudes peaking around 17.5\, mag. All the newly quasars are discovered serendipitously, targeted originally with the LAMOST as stars of bluer colours, except for a few targeted as variable, young stellar object candidates. This bright quasar sample at low Galactic latitudes will help fill the gap in the spatial distribution of known quasars near the Galactic disk that are used to construct astrometric reference frame for the purpose of accurate proper motion measurements, for example, Gaia. They are also excellent tracers to probe the kinematics and chemistry of the interstellar medium of the Milky Way disk and halo via absorption line spectroscopy.