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

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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)CH2OH, and many many
• ther lines:

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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.

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Motte et al. 2018

Disk and outflow in Orion Source I

• Band 8 long-baseline observations of continuum, Si18O,

and H2O 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 H2O line around a 15

M⊙ protostar: Ginsburg et al. 2018, ApJ, 860, 119.

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Hirota et al. 2017 Ginsburg et al. 2018

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
• bservations of high-mass star formation:

Beuther et al. 2018, A&A, 614A, 64; Girart et

• al. 2018, ApJL, 856, L27.

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Takahashi et al. arXiv:1812.03189 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.

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Ilee et al. 2018

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, …

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Oka et al. 2017 Tsuboi et al. 2018

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: Sewiło et al. 2018, ApJL, 853, L19.

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Fukui et al. arXiv:1811.00812

Stars, (post-)AGB stars, planetary nebulae, supernova remnants, …

• (NA) Detection of 26AlF in a stellar

merger remnant: Kamiński 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.

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Kamiński et al. 2018