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In order to precisely determine temperature and density of molecular gas in the Large Magellanic Cloud, we made observations of optically thin $^{13}$CO($J=3-2$) transition by using the ASTE 10m telescope toward 9 peaks where…

Our understanding of how molecular clouds form in the interstellar medium (ISM) would be greatly helped if we had a reliable observational tracer of the gas flows responsible for forming the clouds. Fine structure emission from singly…

Astrophysics of Galaxies · Physics 2019-05-14 Paul C. Clark , Simon C. O. Glover , Sarah E. Ragan , Ana Duarte-Cabral

Measurements of [CI], (J=2-1) 13CO and (J=4-3) 12CO emission from quiescent, starburst and active galaxy centers reveal a distinct pattern characterized by relatively strong [CI] emission. The [CI] to 13CO emission ratio increases with…

Astrophysics · Physics 2009-11-10 F. P. Israel

The Galactic edge at Galactocentric distances of 14\,--\,22\,kpc provides an ideal laboratory to study molecular clouds in an environment that is different from the solar neighborhood, due to its lower gas density, lower metallicity, and…

We observed a 10x20 pc region of the molecular cloud M17 in the 12CO and 13CO J=3-2 and J=2-1 transitions to determine their global behavior and to assess the reliability of using ratios of CO line intensities integrated over an entire…

Astrophysics · Physics 2009-10-31 C. D. Wilson , J. E. Howe , M. L. Balogh

We present maps of atomic carbon [CI](1-0) and [CI](2-1) at a linear resolution ~1kpc scale for a sample of one HII, six LINER, three Seyfert and five starburst galaxies observed with Herschel. We compare spatial distributions of two [CI]…

Astrophysics of Galaxies · Physics 2019-08-14 Qian Jiao , Yinghe Zhao , Nanyao Lu , Yu Gao , Dragan Salak , Ming Zhu , Zhiyu Zhang , Xuejian Jiang , Qinghua Tan

We present an analysis comparing the properties of 45 giant molecular clouds (GMCs) in M33 and the atomic hydrogen (HI) with which they are associated. High-resolution VLA observations are used to measure the properties of HI in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 N. Imara , F. Bigiel , L. Blitz

We present an analysis of the systematic CO(2-1) survey at 12" resolution covering most of the local group spiral M 33 which, at a distance of 840 kpc, is close enough that individual giant molecular clouds (GMCs) can be identified. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 P. Gratier , J. Braine , N. J. Rodriguez-Fernandez , K. F. Schuster , C. Kramer , E. Corbelli , F. Combes , N. Brouillet , P. P. van der Werf , M. Röllig

The amount of H$_2$ present in spiral galaxies remains uncertain, particularly in the dim outer regions and in low-metallicity environments. We present high-resolution CO(1--0) observations with the Plateau de Bure interferometer of the…

Astrophysics of Galaxies · Physics 2016-04-20 J. Braine , P. Gratier , Y. Contreras , K. F. Schuster , N. Brouillet

We present spectral line images of [CI] 809 GHz, CO J=1-0 115 GHz and HI 1.4 GHz line emission, and calculate the corresponding C, CO and H column densities, for a sinuous, quiescent Giant Molecular Cloud about 5 kpc distant along the…

We present new observations of [CII] fine structure line emission from an isolated molecular cloud using the upGREAT instrument onboard SOFIA. These data are analyzed together with archival CO=1-0 and HI 21 cm emission spectra to…

Astrophysics of Galaxies · Physics 2022-12-21 Mark Heyer , Paul F. Goldsmith , Robert Simon , Rebeca Aladro , Oliver Ricken

We present a complete survey of CO 1->0 emission in the Local Group dwarf irregular IC 10. The survey, conducted with the BIMA interferometer, covers the stellar disk and a large fraction of the extended HI envelope with the sensitivity and…

Astrophysics · Physics 2009-11-11 A. Leroy , A. D. Bolatto , F. Walter , L. Blitz

We present fluxes in both neutral carbon [CI] lines at the centers of 76 galaxies with FIR luminosities between 10^{9} and 10^{12} L(o) obtained with Herschel-SPIRE and with ground-based facilities, along with the J=7-6, J=4-3, J=2-1 12CO…

Astrophysics of Galaxies · Physics 2015-06-11 F. P. Israel , M. J. F. Rosenberg , P. van der Werf

We have carried out sub-mm 12CO(J=3-2) observations of 6 giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC) with the ASTE 10m sub-mm telescope at a spatial resolution of 5 pc and very high sensitivity. We have identified 32…

We present and analyze deep Herschel/HIFI observations of the [CII] 158um, [CI] 609um, and [CI] 370um lines towards 54 lines-of-sight (LOS) in the Large and Small Magellanic clouds. These observations are used to determine the physical…

We present a catalogue of Giant Molecular Clouds (GMCs) in M33, extracted from cold dust continuum emission. Our GMCs are identified by computing dendrograms. We measure the spatial distribution of these clouds, and characterise their dust…

Astrophysics of Galaxies · Physics 2018-12-31 Thomas G. Williams , Walter K. Gear , Matthew W. L. Smith

We used the ARO 12m antenna to observe emission from the J=1-0 lines of carbon monoxide, \hcop\ and HNC and the J=2-1 line of CS toward and around the continuum peak used for absorption studies and we compare them with CH, HNC, C\p\ and…

Astrophysics of Galaxies · Physics 2016-01-13 Harvey Liszt , Maryvonne Gerin

This letter presents a Nyquist-sampled, high-resolution [CI] 3P1-3P0 map of the -0.2 deg < l < 1.2 deg x -0.1 deg < b < 0 deg region in the Central Molecular Zone (CMZ) taken with the Atacama Submillimeter Telescope Experiment (ASTE) 10 m…

Astrophysics of Galaxies · Physics 2015-06-03 Kunihiko Tanaka , Tomoharu Oka , Shinji Matsumura , Makoto Nagai , Kazuhisa Kamegai

We present results obtained towards the HII regions N159, N166, and N132 from the emission of several molecular lines in the 345 GHz window. Using ASTE we mapped a 2.4' $\times$ 2.4' region towards the molecular cloud N159-W in the…

Astrophysics of Galaxies · Physics 2015-11-11 S. Paron , M. E. Ortega , C. Fariña , M. Cunningham , P. A. Jones , M. Rubio

We report on the gamma-ray observations of giant molecular clouds Orion A and B with the Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope. The gamma-ray emission in the energy band between \sim100 MeV and \sim100 GeV…

High Energy Astrophysical Phenomena · Physics 2012-08-10 M. Ackermann , M. Ajello , A. Allafort , E. Antolini , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , B. Berenji , R. D. Blandford , E. D. Bloom , E. Bonamente , A. W. Borgland , E. Bottacini , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , C. Cecchi , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , F. D'Ammando , A. de Angelis , F. de Palma , C. D. Dermer , E. do Couto e Silva , P. S. Drell , A. Drlica-Wagner , T. Enoto , L. Falletti , C. Favuzzi , S. J. Fegan , E. C. Ferrara , W. B. Focke , Y. Fukazawa , Y. Fukui , P. Fusco , F. Gargano , D. Gasparrini , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , T. Glanzman , G. Godfrey , S. Guiriec , D. Hadasch , Y. Hanabata , A. K. Harding , M. Hayashida , K. Hayashi , D. Horan , X. Hou , R. E. Hughes , M. S. Jackson , G. Jóhannesson , A. S. Johnson , T. Kamae , H. Katagiri , J. Kataoka , M. Kerr , J. Knödlseder , M. Kuss , J. Lande , S. Larsson , S. -H. Lee , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , K. Makishima , M. N. Mazziotta , J. Mehault , W. Mitthumsiri , A. A. Moiseev , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , T. Nakamori , M. Naumann-Godo , S. Nishino , J. P. Norris , E. Nuss , M. Ohno , T. Ohsugi , A. Okumura , M. Orienti , E. Orlando , J. F. Ormes , M. Ozaki , D. Paneque , J. H. Panetta , D. Parent , V. Pelassa , M. Pesce-Rollins , M. Pierbattista , F. Piron , G. Pivato , T. A. Porter , S. Rainò , M. Razzano , A. Reimer , O. Reimer , M. Roth , H. F. -W. Sadrozinski , C. Sgrò , E. J. Siskind , G. Spandre , P. Spinelli , A. W. Strong , H. Takahashi , T. Takahashi , T. Tanaka , J. G. Thayer , J. B. Thayer , O. Tibolla , M. Tinivella , D. F. Torres , A. Tramacere , E. Troja , Y. Uchiyama , T. L. Usher , J. Vandenbroucke , V. Vasileiou , G. Vianello , V. Vitale , A. P. Waite , P. Wang , B. L. Winer , K. S. Wood , Z. Yang , S. Zimmer