# A New 95 GHz Methanol Maser Catalog: I. Data

## TL;DR

This paper presents a new catalog of 95 GHz methanol masers based on observations of 1020 galactic sources, including 144 new detections, significantly expanding the known maser population and providing valuable data for astrophysical studies.

## Contribution

The study provides the largest catalog of 95 GHz methanol masers to date, with new detections and a comprehensive comparison with thermal emissions, enhancing understanding of maser properties.

## Key findings

- 20% detection rate of methanol masers in the sample
- 70% of detected masers are new discoveries
- Total of 481 known 95 GHz methanol masers compiled

## Abstract

The Purple Mountain Observatory 13.7 m radio telescope has been used to search for 95 GHz (8$_0$--7$_1$A$^+$) class I methanol masers towards 1020 Bolocam Galactic Plane Survey (BGPS) sources, leading to 213 detections. We have compared the line width of the methanol and HCO$^+$ thermal emission in all of the methanol detections and on that basis we find 205 of the 213 detections are very likely to be masers. This corresponds to an overall detection rate of 95 GHz methanol masers towards our BGPS sample of 20%. Of the 205 detected masers 144 (70%) are new discoveries. Combining our results with those of previous 95 GHz methanol masers searches, a total of four hundred and eighty-one 95 GHz methanol masers are now known, we have compiled a catalog listing the locations and properties of all known 95 GHz methanol masers.