Diagnostics of a Nuclear Starburst: Water and Methanol Masers

Abstract

We test models of starburst driven outflows using observations of the 22.2 GHz H${}_2$O and 36.2 GHz class I CH${}_3$OH maser lines. We have observed the starburst galaxy NGC 253 using the Karl G. Jansky Very Large Array. We present evidence for entrainment of star-forming dense-molecular gas in the outflow of NGC 253. We also show that H${}_2$O masers are associated with forming super star clusters and not with supernova remnants. We detect four new 36 GHz CH${}_3$OH masers in the central kpc and show possible evidence for a star-formation origin of two class I CH${}_3$OH masers. Such high resolution observations are essential for understanding the origin of these masers.

References in corpus (17)

• A 2 mm spectral line survey of the starburst galaxy NGC 253
• ALMA Reveals the Molecular Medium Fueling the Nearest Nuclear Starburst
• Quantifying Supernovae-Driven Multiphase Galactic Outflows
• Forming Super Star Clusters in the Central Starburst of NGC 253
• Physical characteristics of bright Class I methanol masers
• Accurate water maser positions from HOPS
• Water maser variability over 20 years in a large sample of star-forming regions: the complete database
• Survey of Water and Ammonia in Nearby galaxies (SWAN): Resolved Ammonia Thermometry, Water and Methanol Masers in the Nuclear Starburst of NGC 253
• Evidence of a pure starburst nature of the nuclear region of NGC 253
• Detection of 36 GHz class I methanol maser emission towards NGCS253
• The Star Formation in Radio Survey: Jansky Very Large Array 33 GHz Observations of Nearby Galaxy Nuclei and Extranuclear Star-Forming Regions
• Detection of a methanol megamaser in a major-merger galaxy
• Class I methanol masers in NGC253: Alcohol at the end of the bar
• Class I Methanol (CH${}_3$OH) Maser Conditions near Supernova Remnants
• Survey of Water and Ammonia in Nearby galaxies (SWAN): Resolved Ammonia Thermometry, and Water and Methanol Masers in IC 342, NGC 6946 and NGC 2146
• Detection of 36 GHz Class I Methanol Maser Emission Towards NGC 4945
• 44 GHz Class I Methanol (CH${}_3$OH) Maser Survey in the Galactic Center

Cited by in corpus (14)

• The Physics of Star Cluster Formation and Evolution
• Outflows from Super Star Clusters in the Central Starburst of NGC253
• Fire in the Heart: A Characterization of the High Kinetic Temperatures and Heating Sources in the Nucleus of NGC253
• The Morpho-Kinematic Architecture of Super Star Clusters in the Center of NGC253
• Methanol masers in NGC 253 with ALCHEMI
• Discovery of Methanimine Megamasers Toward Compact Obscured Galaxy Nuclei
• 36 GHz methanol lines from nearby galaxies: maser or quasi-thermal emission?
• An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253
• Could kilomasers pinpoint supermassive stars?
• Complex Organic Molecules towards the central molecular zone of NGC 253
• Search strategies for supermassive stars in young clusters and application to nearby galaxies
• The Dust Polarisation and Magnetic Field Structure in the Centre of NGC253 with ALMA
• Evidence for Coupling of Evolved Star Atmospheres and Spiral Arms of the Milky Way
• Clustered Star Formation in the center of NGC 253 Contributes to Driving the Ionized Nuclear Wind