Highlights of Galactic Sciences with ALMA in 2018 Disclaimer: Not - PowerPoint PPT Presentation

Highlights of Galactic Sciences with ALMA in 2018 Disclaimer: Not an expert in many of the following fields, so it is potentially very biased! With focuses on: • High-mass (>8 M ⊙ ) star formation in the Galaxy • Galactic Center & the Central Molecular Zone • ISM and star formation in Magellanic clouds • (post-)AGB stars, planetary nebulae, supernova remnants. Xing "Walker" Lu (NAOJ) Dec 26, 2018 1

First ALMA Band 10 publication: line jungle in NGC2264I (from NA) McGuire et al. 2018, ApJL, 863, L35. • Band 10 line survey of a high-mass protostar • NGC2264I. Detection of HDO, HC ( O ) CH 2 OH, and many many • other lines: 2

Cycle 5 large program: ALMA-IMF PI: F. Motte (EU). co-PIs: A. Ginsburg (NA), P. • Sanhueza (EA), F. Louvet (EU), and 30 co-Is ( including 8 from EA) . To investigate the core mass function evolution of • massive protoclusters with the 15 most massive clouds at d < 6 kpc (e.g., W51, W43, G10.62). 'Pilot' paper about the top-heavy Core Mass • Function in a Galactic mini-starburst W43-MM1: Motte et al. 2018, Nature Astronomy, 2, 478. Motte et al. 2018 3

Disk and outflow in Orion Source I Band 8 long-baseline observations of continuum, Si 18 O, • and H 2 O lines in a high-mass YSO candidate. : Hirota et al., 2017, Nature Astronomy, 1, 416. "Convincing evidence of a rotating outflow directly driven by the magneto-centrifugal disk wind launched by a high-mass YSO candidate". (NA) A Keplerian disk traced by H 2 O line around a 15 • M ⊙ protostar: Ginsburg et al. 2018, ApJ, 860, 119. Ginsburg et al. 2018 Hirota et al. 2017 4

Polarization observations of high-mass star forming regions Magnetic field in massive cores in W51: • Koch et al. 2018, ApJ, 855, 39. Long-baseline polarization observations of • OMC-3/MMS 6 at 10 AU resolution: Takahashi et al. arXiv:1812.03189. (EU) Other examples of polarization • observations of high-mass star formation: Beuther et al. 2018, A&A, 614A, 64; Girart et al. 2018, ApJL, 856, L27. Takahashi et al. arXiv:1812.03189 5 Koch et al. 2018

Other highlights in HMSF research (EU) Disk fragmentation to form a high- • mass binary in G11.92–0.61 MM 1: Ilee et al. 2018, ApJL, 869, 2. Chemistry of the high-mass protostellar • clump IRAS 16562-3959: Guzmán et al. 2018, ApJS, 236, 45. A submillimeter burst in S255IR SMA1: • Liu et al. 2018, ApJL, 863, L12. Ilee et al. 2018 6

The Galactic Center Intermediate-mass black hole candidates • around the GC: Oka et al. 2017, Nature Astronomy, 1, 709; Tsuboi et al. 2017, ApJL, 850, L5. The circumnuclear disk: Tsuboi et al. 2018, • PASJ, 70, 85. (NA/EU) Molecular clouds such as Sgr B2: • Ginsburg et al. 2018, ApJ, 853, 171; Xue et al. arXiv:1812.07091, … Tsuboi et al. 2018 Oka et al. 2017 7

HMSF, filaments, and SNRs in Magellanic clouds HMSF in N159E/W in LMC: Fukui et • al., arXiv: 1811.00812; Tokuda et al., arXiv:1811.04400. Possible evolutionary sequence among • 5 molecular clouds in LMC: Sawada et al. 2018, ApJ, 867, 166. HMSF in N55 in LMC: Naslim et al. • 2018, ApJ, 853, 175. Methanol gas at 0.2 solar metallicity in • SMC: Shimonishi et al. 2018, ApJ, 862, 102. (NA) Complex organic molecules in • hot cores in LMC: Sewi ł o et al. 2018, ApJL, 853, L19. Fukui et al. arXiv:1811.00812 8

Stars, (post-)AGB stars, planetary nebulae, supernova remnants, … (NA) Detection of 26 AlF in a stellar • merger remnant: Kami ń ski et al. 2018, Nature Astronomy, 2, 778. (EU) Ring and hourglass shaped • structures in a white dwarf-brown dwarf merger in CK Vul: Eyres et al. 2018, MNRAS, 481. 4931. Supernova remnants in LMC: Sano et • al. 2018, ApJ, 867, 7; Yamane et al. 2018, 863, 55; Sano et al. arXiv: 1809.02481. Kami ń ski et al. 2018 9