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Related papers: ALMA Resolves Giant Molecular Clouds in a Tidal Dw…

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Tidal dwarf galaxies (TDGs) are low-mass objects that form within tidal and/or collisional debris ejected from more massive interacting galaxies. We use CO($1-0$) observations from ALMA and integral-field spectroscopy from MUSE to study…

We investigate the process of galaxy formation as can be observed in the only currently forming galaxies -- the so-called Tidal Dwarf Galaxies, hereafter TDGs -- through observations of the molecular gas detected via its CO (Carbon…

Astrophysics · Physics 2007-05-23 J. Braine , P. -A. Duc , U. Lisenfeld , E. Brinks , V. Charmandaris , S. Leon

[Abridged...] We investigate the process of galaxy formation as can be observed in the only currently forming galaxies -- the so-called Tidal Dwarf Galaxies, hereafter TDGs -- through observations of the molecular gas detected via its CO…

Astrophysics · Physics 2009-11-07 J. Braine , P. -A. Duc , U. Lisenfeld , V. Charmandaris , O. Vallejo , S. Leon , E. Brinks

Tidal Dwarf Galaxies (TDGs) are objects presently forming from gas which has been expelled from their parent galaxies during an interaction. We observed the CO emission of a sample of 11 TDGs, of which 8 were detected. The CO is found at…

Astrophysics · Physics 2007-05-23 U. Lisenfeld , J. Braine , O. Vallejo , P. -A. Duc , S. Leon , E. Brinks , V. Charmandaris

Tidal Dwarf Galaxies (TDGs), produced from material expelled in galactic interactions, are well--suited to test the laws of star formation (SF) due to their simple structure, high metallicity -- making CO a reliable tracer of the molecular…

Cosmology and Nongalactic Astrophysics · Physics 2009-03-06 Ute Lisenfeld , Frederic Bournaud , Elias Brinks , Pierre-Alain Duc

Current observations favour that the massive ultraviolet-bright clumps with a median stellar mass of $\sim 10^7~M_{\odot}$, ubiquitously observed in $z\sim 1-3$ galaxies, are star-forming regions formed in-situ in galaxies. It has been…

Tidal dwarf galaxies (TDGs) form in the debris of galaxy mergers, making them ideal testbeds for investigating star formation in an extreme environment. We present radio continuum EVLA observations spanning 1-2 GHz of the interacting system…

Astrophysics of Galaxies · Physics 2024-06-27 Blanca M. Moncada-Cuadri , Ute Lisenfeld , Miguel Querejeta , Carole Mundell

We report molecular line and continuum observations toward one of the most massive giant molecular clouds (GMCs), GMC-16, in M33 using ALMA with an angular resolution of 0$''$44 $\times$ 0$''$27 ($\sim$2 pc $\times$ 1 pc). We have found…

We use high spatial resolution observations of CO to systematically measure the resolved size-line width, luminosity-line width, luminosity-size, and the mass-luminosity relations of Giant Molecular Clouds (GMCs) in a variety of…

Astrophysics · Physics 2009-11-13 Alberto D. Bolatto , Adam K. Leroy , Erik Rosolowsky , Fabian Walter , Leo Blitz

We present $^{12}$CO ($J$ = 2-1), $^{13}$CO ($J$ = 2-1), and C$^{18}$O ($J$ = 2-1) observations toward GMC-8, one of the most massive giant molecular clouds (GMCs) in M33 using ALMA with an angular resolution of 0".44 $\times$ 0".27…

We observed five giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC) in the 12CO J=1-0 line using the Atacama Large Millimeter/submillimeter Array (ALMA). The sample includes four GMCs with some signs of star formation --…

Astrophysics of Galaxies · Physics 2018-12-17 Tsuyoshi Sawada , Jin Koda , Tetsuo Hasegawa

We present high-spatial-resolution ($\sim 0\farcs2$, or $\sim$3\,pc) CO(2--1) observations of the nearest young starburst dwarf galaxy, NGC\,5253, taken with the Atacama Large Millimeter/submillimeter Array. We have identified 118 molecular…

Astrophysics of Galaxies · Physics 2018-10-10 Rie E. Miura , Daniel Espada , Akihiko Hirota , Kouichiro Nakanishi , George J. Bendo , Hajime Sugai

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 present the highest resolution (1") $^{12}$CO(1-0) observations of molecular gas in the dwarf starburst galaxy NGC 625, to date, obtained with ALMA. Molecular gas is distributed in discrete clouds within an area of $0.4$ kpc$^2$ and does…

Astrophysics of Galaxies · Physics 2020-05-27 Nia Imara , Ilse De Looze , Christopher M. Faesi , Diane Cormier

We have conducted a $^{12}$CO(2-1) survey of several molecular gas complexes in the vicinity of H II regions within the spiral galaxy NGC 300 using the Atacama Large Millimeter Array. Our observations attain a resolution of 10 pc and 1 km…

Astrophysics of Galaxies · Physics 2018-04-25 Christopher M. Faesi , Charles J. Lada , Jan Forbrich

We present new results for the molecular gas, dust emission and the ionized gas in J1023+1952, an HI rich intergalactic star-forming tidal dwarf galaxy candidate. It is located at the projected intersection of two faint stellar tidal…

Astrophysics · Physics 2009-11-13 U. Lisenfeld , C. G. Mundell , E. Schinnerer , P. N. Appleton , J. Allsopp

Giant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting the initial conditions for the formation of stars. We…

Astrophysics · Physics 2008-10-16 Alberto D. Bolatto , Adam K. Leroy , Erik Rosolowsky , Fabian Walter , Leo Blitz

We define a Tidal Dwarf Galaxy (TDG) as a self-gravitating entity of dwarf-galaxy mass built from tidal material expelled during interactions. We then summarize our findings on broad-band imaging and spectroscopy of a sample of TDG…

Astrophysics · Physics 2007-05-23 Peter M. Weilbacher , Pierre-Alain Duc

Collisional debris around interacting and post-interacting galaxies often display condensations of gas and young stars that can potentially form gravitationally bound objects: Tidal Dwarf Galaxies (TDGs). We summarise recent results on…

Astrophysics of Galaxies · Physics 2015-11-04 Federico Lelli , Pierre-Alain Duc , Elias Brinks , Stacy S. McGaugh

We present the first high angular resolution study of giant molecular clouds (GMCs) in the nearby spiral galaxy NGC 300, based on observations from the Submillimeter Array (SMA). We target eleven 500 pc-sized regions of active star…

Astrophysics of Galaxies · Physics 2016-04-28 Christopher Faesi , Charles Lada , Jan Forbrich
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