86 datasets found

Keywords: molecular physics

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  • O_2_ laboratory atmosphere simulation experiments

    Previous studies of haze formation in the atmosphere of the early Earth have focused on N_2_/CO_2_/CH_4_ atmospheres. Here, we experimentally investigate the effect of O_2_ on...
  • Visible obs. of GOT C+ Northern sightlines

    Using visible, radio, microwave, and submillimeter data, we study several lines of sight toward stars generally closer than 1kpc on a component-by-component basis. We derive the...
  • Unlocking CO depletion in protoplanetary disks. I.

    CO is commonly used as a tracer of the total gas mass in both the interstellar medium and in protoplanetary disks. Recently, there has been much debate about the utility of CO...
  • ALMA astrochemical obs. of the merger NGC 3256

    In external galaxies, molecular composition may be influenced by extreme environments such as starbursts and galaxy mergers. To study such molecular chemistry, we observed the...
  • Improved A^3^{Pi}-X^3^{Sigma}^-^ transitions of OH+

    Molecular ions are key reaction intermediates in the interstellar medium. OH+ plays a central role in the formation of more complex chemical species and for estimating the...
  • UV spectrum of molecular hydrogen in the Sun

    Ultraviolet (UV) lines of molecular hydrogen have been observed in solar spectra for almost four decades, but the behavior of the molecular spectrum and its implications for...
  • Transition frequencies of ethanimine (CH_3_CHNH)

    Ethanimine, a possible precursor of amino acids, is considered an important prebiotic molecule and thus may play important roles in the formation of biological building blocks...
  • CO emission from 78 WISE HII region in the OSC

    The Outer Scutum-Centaurus arm (OSC) is the most distant molecular spiral arm known in the Milky Way. The OSC may be the very distant end of the well-known Scutum-Centaurus arm,...
  • CH_3_OCH_2_OH ALMA detection in NGC 6334I

    We report the detection of interstellar methoxymethanol (CH_3_OCH_2_OH) in Atacama Large Millimeter/submillimeter Array (ALMA) Bands 6 and 7 toward the MM1 core in the high-mass...
  • Molecular transitions toward NGC5128 with ALMA

    Centaurus A, with its gas-rich elliptical host galaxy, NGC 5128, is the nearest radio galaxy at a distance of 3.8Mpc. Its proximity allows us to study the interaction among an...
  • Interstellar acetone (CH_3_COCH_3_) in 3 regions

    We present observations of interstellar acetone (CH_3_COCH_3_) detected in broadband line surveys in the 1.3mm band from the Caltech Submillimeter Observatory (CSO). The...
  • High-resolution FIR spectrum of anti-vinyl alcohol

    We report a detailed analysis of the high-resolution far-infrared spectrum of anti-vinyl alcohol, which has been previously identified toward Sagittarius B2(N). The {nu}15 OH...
  • M51 ISM structures from the CO maps of PAWS

    We compare the structure of molecular gas at 40pc resolution to the ability of gas to form stars across the disk of the spiral galaxy M51. We break the PdBI Arcsecond Whirlpool...
  • HII region candidates in the OSC spiral arm

    The Outer Scutum-Centaurus (OSC) spiral arm is the most distant molecular spiral arm in the Milky Way, but until recently little was known about this structure. Discovered by...
  • ALMA-ATOMS survey. Weak hot core candidates

    Hot cores represent critical astrophysical environments for high-mass star formation, distinguished by their rich spectra of organic molecular emission lines. Nevertheless,...
  • NGC 1333-SE DCO+ and H13CO+ datacubes

    Electron fraction and cosmic-ray ionization rates in star-forming regions are important quantities in astrochemical modeling and are critical to the degree of coupling between...
  • Molecular gas in AFGL 2298

    We investigated the molecular environment of AFGL 2298, an obscured Galactic Luminous blue variable (LBV) star which hosts a highly structured circumstellar environment with...
  • Molecular Superbubbles in nearby galaxies

    Star formation and stellar feedback are interlinked processes that redistribute energy, turbulence, and material throughout galaxies. Because young and massive stars form in...
  • HL Tau SO2 14(0-14)-13(1,13) datacube

    Planet-forming disks are not isolated systems. Their interaction with the surrounding medium affects their mass budget and chemical content. In the context of the ALMA-DOT...
  • History independent tracers

    Molecular line emission is a powerful probe of the physical conditions of astrophysical objects but can be complex to model and it is often unclear which transitions would be...
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