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Articles by John Bally
A Broad Line-width, Compact, Millimeter-bright Molecular Emission Line Source near the Galactic Center
The following article is Open access A Broad Line-width, Compact, Millimeter-bright Molecular Emission Line Source near the Galactic Center Adam Ginsburg1 , John Bally2 , Ashley T. Barnes3 , Cara Battersby4 , Nazar Budaiev1 , Natalie O. Butterfield5 , Paola Caselli6 , Laura Colzi7 , Katarzyna M. Dutkowska8 , Pablo García9,10 , Savannah Gramze1 , Jonathan D. Henshaw11,12 , Yue Hu13 , Desmond Jeff1,14 , Izaskun Jiménez-Serra7 , Jens Kauffmann15 , Ralf S. Klessen16,17 , Emily M. Levesque18 , Steven N.
Arno A. Penzias (1933-2024), co-discoverer of the cosmic microwave background
Arno Penzias and Robert Wilson made a pivotal discovery that altered humanity’s understanding of the Universe. In 1964, they detected the radio-frequency glow from the sky that became known as the cosmic microwave background. This observation confirmed the Big Bang model of the Universe and ushered in a new era of precision cosmology. For their discovery, Penzias and Wilson shared half of the 1978 Nobel prize for physics. Penzias has died aged 90.
Structure of the Source I Disk in Orion-KL
The Kleinmann–Low (KL) nebula in Orion, at a distance 415 pc (Menten et al. 2007; Kim et al. 2008; Kounkel et al. 2018), is the nearest HII region in which massive (M > 8 M⊙) stars are forming. The two most massive objects in this region, Source I (SrcI) and the Becklin–Neugebauer Object (BN), appear to be recoiling from one another at 35–40 km s−1 (Rodríguez et al. 2005; Gómez et al. 2008; Goddi et al.
Disks, Microjets, Windblown Bubbles, and Outflows in the Orion Nebula
John Bally1, C. R. O'Dell2, and Mark J. McCaughrean3 The Astronomical Journal, Volume 119, Number 6 Citation John Bally et al 2000 AJ 119 2919 1538-3881/119/6/2919 Abstract New deep narrowband images of the Orion Nebula obtained with WFPC2 on the Hubble Space Telescope (HST) and spectra taken with the HIRES spectrometer at the Keck Observatory are presented.
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