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Discovery of the first methanol (CH3OH) maser in the Andromeda galaxy (M31)
the first methanol the Andromeda galaxy
2011/1/10
We present the first detection of a 6.7 GHz Class II methanol (CH3OH) maser in the Andromeda galaxy (M31). The CH3OH maser was found in a Very Large Array (VLA) survey during the fall of 2009. We have...
A survey of diffuse interstellar bands in the Andromeda galaxy: optical spectroscopy of M31 OB stars
dust extinction – galaxies individual (M31) – galaxies ISM – ISM H ii regions – ISM
2010/11/10
We present the largest sample to-date of intermediate-resolution blue-to-red optical spectra of B-type supergiants in M31 and undertake the first survey of diffuse interstellar bands (DIBs) in this ga...
Big game hunting in the andromeda galaxy：identifying And weighing black holes in low mass x-ray binaries
andromeda galaxy low mass x-ray binaries weighing black holes
2009/6/17
Big game hunting in the andromeda galaxy：identifying And weighing black holes in low mass x-ray binaries。
February 23, 2007,The first 3 images below are examples of images of M31, the Andromeda Galaxy, made with the first few elements (antennas) of the Allen Telescope Array (ATA). These maps (or radio ima...