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This article synthesizes observational data from an extensive program aimed toward a comprehensive understanding of star formation in a low-mass star-forming molecular cloud. New observations and published data spanning from the centimeter…

Astrophysics · Physics 2019-08-19 J. Swift , Wm. J. Welch

The Trifid Nebula is a young, nearby star-forming region where star formation is proposed to have been triggered by cloud-cloud collision (CCC), based on observations of molecular clouds. It offers a unique opportunity to test whether the…

Solar and Stellar Astrophysics · Physics 2021-11-04 Venu M. Kalari

The association of young T Tauri stars, MBM12A, indicates that L1457 was forming stars not too long ago. With our study we want to find out whether or not there are still signs for ongoing star formation in that cloud. Using the…

Astrophysics of Galaxies · Physics 2015-05-20 Andreas Heithausen , Christoph Böttner

We examine the effects of ionization, radiation pressure and main sequence winds from massive stars on self-gravitating, clumpy molecular clouds, thereby modeling the formation and pre-supernova feedback of massive star clusters. We find…

Astrophysics · Physics 2007-05-23 Jonathan C. Tan , Christopher F. McKee

Star formation is intimately linked to the dynamical evolution of molecular clouds. Turbulent fragmentation determines where and when protostellar cores form, and how they contract and grow in mass via accretion from the surrounding cloud…

Astrophysics · Physics 2007-05-23 Ralf Klessen

Recent findings hint that the winds of massive stars with poorer metallicity than the SMC may be stronger than predicted by theory. Besides calling the paradigm of radiation driven winds into question, this result would impact the predicted…

Solar and Stellar Astrophysics · Physics 2015-06-12 Miriam Garcia , Artemio Herrero

Stars are formed by gravitational collapse, spontaneously or, in some cases under the constructive influence of nearby massive stars, out of molecular cloud cores. Here we present an observational diagnosis of such triggered formation…

Astrophysics of Galaxies · Physics 2022-03-30 Tanvi Sharma , Wen Ping Chen , Neelam Panwar , Yan Sun , Yu Gao

We present an analysis of the spatial distribution of various stellar populations within the Large Magellanic Cloud. We combine mid-infrared selected young stellar objects, optically selected samples with mean ages between ~9 and ~1000 Myr,…

Astrophysics · Physics 2015-12-24 Nate Bastian , Mark Gieles , Barbara Ercolano , Rob Gutermuth

Investigating the evolution of protoplanetary disks is crucial for our understanding of star and planet formation. Several theoretical and observational studies have been performed in the last decades to advance this knowledge. FT Tauri is…

Classical theories for the stellar initial mass function (IMF) predict a peak mass which scales with the properties of the molecular cloud. In this work, we explore a new theory proposed by Lee & Hennebelle (2018). The idea is that the…

Solar and Stellar Astrophysics · Physics 2020-01-22 Tine Colman , Romain Teyssier

We present the results of a study of young unresolved stellar groupings (clusters, OB associations, and their complexes) associated with HII regions, based on the coupling of spectroscopic, photometric and H{\alpha} spectrophotometric…

Astrophysics of Galaxies · Physics 2023-07-13 A. S. Gusev , F. Sakhibov , O. V. Egorov , V. S. Kostiuk , E. V. Shimanovskaya

Infrared shells and bubbles are ubiquitous in the Galaxy and can generally be associated with HII regions formed around young, massive stars. In this paper, we use high-resolution 3D SPH simulations to explore the effect of a single O7 star…

Astrophysics of Galaxies · Physics 2015-06-16 S. Walch , A. P. Whitworth , T. G. Bisbas , R. Wunsch , D. A. Hubber

We have studied the properties of the stellar populations in the field of the NGC 346 cluster in the Small Magellanic Cloud, using the results of a novel self-consistent method that provides a reliable identification of pre-main sequence…

Solar and Stellar Astrophysics · Physics 2015-05-28 Guido De Marchi , Nino Panagia , Elena Sabbi

In the present study, considering the physical conditions that are relevant in interactions between supernova remnants (SNRs) and dense molecular clouds for triggering star formation we have built a diagram of SNR radius versus cloud…

Astrophysics · Physics 2009-11-11 C. Melioli , E. M. de Gouveia Dal Pino , R. de la Reza , A. Raga

We have observed the central region of the IR-dark cloud filament associated with IRAS 18507+0121 at millimeter wavelengths in CO(1-0), 13CO(1-0), and C18O(1-0) line emission and with the Spitzer Space Telescope at mid-IR wavelengths. Five…

We present a new method for the evaluation of the age and age-spread among pre-main-sequence (PMS) stars in star-forming regions in the Magellanic Clouds, accounting simultaneously for photometric errors, unresolved binarity, differential…

Astrophysics of Galaxies · Physics 2015-05-19 Nicola Da Rio , Dimitrios A. Gouliermis , Mario Gennaro

The evolution of HII regions/supershells can trigger a new generation of stars/clusters at their peripheries, with environmental conditions that may affect the initial mass function, disk evolution and star formation efficiency. In this…

Solar and Stellar Astrophysics · Physics 2017-02-22 Jessy Jose , Gregory J. Herczeg , Manash R. Samal , Qiliang Fang , Neelam Panwar

(Abridged) The c2d Spitzer Legacy project obtained images and photometry with both IRAC and MIPS instruments for five large, nearby molecular clouds. This paper combines information drawn from studies of individual clouds into a combined…

We report the discovery of new pre-main sequence (PMS) stars in the Lagoon Nebula (M8) at a distance of 1.25 kpc, based on intermediate resolution spectra obtained with the Boller & Chivens spectrograph at the 6.5-m Magellan I telescope…

Astrophysics · Physics 2008-11-26 Julia I. Arias , Rodolfo H. Barba , Nidia I. Morrell

As part of a JCMT Legacy Survey of star formation in the Gould Belt, we present early science results for Taurus. CO J=3-2 maps have been secured along the north-west ridge and bowl, collectively known as L 1495, along with deep 13CO and…

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