DIISC-I: The Discovery of Kinematically Anomalous H i Clouds in M 100
نویسندگان
چکیده
Abstract We report the discovery of two kinematically anomalous atomic hydrogen (H i ) clouds in M 100 (NGC 4321), which was observed as part Deciphering Interplay between Interstellar medium, Stars, and Circumgalactic medium (DIISC) survey H 21 cm at 3.3 km s −1 spectroscopic 44″ × 30″ spatial resolution using Karl G. Jansky Very Large Array. 15 The National Radio Astronomy Observatory is a facility Science Foundation operated under cooperative agreement by Associated Universities, Inc. These were identified structures that show significant kinematic offsets from rotating disk 100. velocity 40 these are comparable to seen intermediate-velocity (IVCs) circumgalactic (CGM) Milky Way nearby galaxies. find one cloud associated with star-forming regions detected α far-ultraviolet imaging. Our investigation shows may originate multiple mechanisms, such star formation feedback-driven outflows, ram pressure stripping, tidal interactions satellite Moreover, we do not detect any cool CGM 38.8 kpc center 100, giving an upper limit N(H ≤1.7 10 13 −2 (3 σ ). Since Virgo cluster, nonexistence neutral/cool likely pathway for turning it into red galaxy.
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2021
ISSN: ['2041-8213', '2041-8205']
DOI: https://doi.org/10.3847/1538-4357/ac2303