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Studies of the molecular interstellar medium that fuels star formation and supermassive black hole growth in galaxies at cosmological distances have undergone tremendous progress over the past few years. Based on the detection of molecular…

Cosmology and Nongalactic Astrophysics · Physics 2012-02-10 Dominik A. Riechers

We present an unbiased spectral line survey toward the Galactic Centre (GC) quiescent giant molecular cloud (QGMC), G+0.693 using the GBT and IRAM 30$\,$ telescopes. Our study highlights an extremely rich organic inventory of abundant…

Single-dish observations suggest that the abundances of organic species in star-forming regions of the outer Galaxy, characterised by sub-Solar metallicities, are comparable to those found in the local Galaxy. To understand this…

Astrophysics of Galaxies · Physics 2024-10-01 F. Fontani , G. Vermariën , S. Viti , D. Gigli , L. Colzi , M. T. Beltrán , P. Caselli , V. M. Rivilla , Á , Sánchez-Monge

Molecular emission is used to investigate both the physical and chemical properties of protoplanetary disks. Therefore, to accurately derive disk properties, we need a thorough understanding of the behavior of the molecular probes we rely…

(abridged) We study a previously discovered protostellar source that is deeply embedded and drives an energetic molecular outflow. The source, UYSO1, is located close to IRAS 07029-1215 at a distance of ~1 kpc. The multi-wavelength…

In this chapter we review the young stars and molecular clouds found at high Galactic latitudes $(|b| \ge 30^\circ)$. These are mostly associated with two large-scale structures on the sky, the Gould Belt and the Taurus star formation…

Astrophysics · Physics 2008-11-24 Peregrine M. McGehee

Galaxy-scale outflows are of critical importance for galaxy formation and evolution. Dust grains are the main sites for the formation of molecules needed for star formation but are also important for the acceleration of outflows that can…

This paper presents a systematic survey of the deuterated and 13C isotopologues of a variety of oxygen-bearing complex organic molecules on Solar System scales toward the protostar IRAS 16293-2422B. We use the data from an unbiased…

Currently ~36 different absorption bands have been detected in the infrared spectra of cold, dense interstellar and circumstellar environments. These are attributed to the vibrational transitions of ~17 different molecules frozen on dust…

Astrophysics · Physics 2007-05-23 A. C. A. Boogert , P. Ehrenfreund

Benzonitrile ($c$-C$_6$H$_5$CN), a polar proxy for benzene ($c$-C$_6$H$_6$}), has the potential to serve as a highly convenient radio probe for aromatic chemistry, provided this ring can be found in other astronomical sources beyond the…

Large interstellar organic molecules are potential precursors of prebiotic molecules. Their formation pathways and chemical relationships with one another and simpler molecules are therefore of great interest. In this paper, we address the…

Solar and Stellar Astrophysics · Physics 2016-03-23 Dawn M. Graninger , Olivia H. Wilkins , Karin I. Oberg

Fullerenes are a particularly stable class of carbon molecules in the shape of a hollow sphere or ellipsoid that might be formed in the outflows of carbon stars. Once injected into the interstellar medium (ISM), these stable species survive…

Astrophysics of Galaxies · Physics 2014-07-04 J. Bernard-Salas , J. Cami , A. P. Jones , E. Peeters , E. R. Micelotta , M. Otsuka , G. C. Sloan , F. Kemper , M. Groenewegen

We report the discovery of a new young stellar cluster in the outer Galaxy located at the position of an IRAS PSC source that has been previously mis-identified as an external galaxy. The cluster is seen in our near-infrared imaging towards…

Solar and Stellar Astrophysics · Physics 2015-08-06 J. L. Yun , D. Elia , A. A. Djupvik , J. M. Torrelles , S. Molinari

We present molecular line observations made with the IRAM 30-m telescope of the immediate surroundings of a sample of 11 candidate high-mass protostars. These observations are part of an effort to clarify the evolutionary status of a set of…

Astrophysics · Physics 2009-11-06 J. Brand , R. Cesaroni , F. Palla , S. Molinari

A prevailing theory for the interstellar production of complex organic molecules (COMs) involves formation on warm dust-grain surfaces, via the diffusion and reaction of radicals produced through grain-surface photodissociation of stable…

Astrophysics of Galaxies · Physics 2020-08-19 Mihwa Jin , Robin T. Garrod

We have revisited the stellar content of OMC 2 and OMC 3 by means of MIR imaging and NIR photometry; in addition, we have extended the existing (sub)mm maps by a huge 1200 micron map obtained with SIMBA showing new sources and filamentary…

Astrophysics · Physics 2009-11-10 Markus Nielbock , Rolf Chini , Sven A. H. Mueller

Carbon chain molecules may be an important reservoir of reactive organics during star and planet formation. Carbon chains have been observed toward several low-mass young stellar objects (YSOs), but their typical abundances and chemical…

Astrophysics of Galaxies · Physics 2018-08-22 Charles J. Law , Karin I. Oberg , Jennifer B. Bergner , Dawn Graninger

We present the results of a 7 mm spectral survey of molecular absorption lines originating in the disk of a z=0.89 spiral galaxy located in front of the quasar PKS 1830-211. [...] A total of 28 different species, plus 8 isotopic variants,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 S. Muller , A. Beelen , M. Guélin , S. Aalto , J. H. Black , F. Combes , S. Curran , P. Theule , S. Longmore

A systematic search of the 2MASS point source catalog, covering 47% of the sky, was carried out aiming to reveal any hidden globular clusters in our Galaxy. Eight new star clusters were discovered by a search algorithm based on finding…

Astrophysics · Physics 2009-11-07 V. D. Ivanov , J. Borissova , P. Pessev , G. R. Ivanov , R. Kurtev

We survey the current situation regarding chemical modelling of the synthesis of molecules in the interstellar medium. The present state of knowledge concerning the rate coefficients and their uncertainties for the major gas-phase processes…