Resolved star formation in the metal poor star-forming region Magellanic Bridge C

Abstract

Magellanic Bridge C (MB-C) is a metal-poor ($\sim$1/5 $Z_{\odot }$) low-density star-forming region located 59 kpc away in the Magellanic Bridge, offering a resolved view of the star formation process in conditions different to the Galaxy. From Atacama Large Millimetre Array CO (1-0) observations, we detect molecular clumps associated to candidate young stellar objects (YSOs), pre-main sequence (PMS) stars, and filamentary structure identified in far-infrared imaging. YSOs and PMS stars form in molecular gas having densities between 17-200 $M_{\odot }$ pc${}^{-2}$, and have ages between $\lesssim$0.1-3 Myr. YSO candidates in MB-C have lower extinction than their Galactic counterparts. Otherwise, our results suggest that the properties and morphologies of molecular clumps, YSOs, and PMS stars in MB-C present no patent differences with respect to their Galactic counterparts, tentatively alluding that the bottleneck to forming stars in regions similar to MB-C is the conversion of atomic gas to molecular.

arXiv commentAccepted for publication in MNRAS; 22 pages, 14 figs

References in corpus (59)

• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Embedded Clusters in Molecular Clouds
• Star Formation in the Milky Way and Nearby Galaxies
• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• Theory of Star Formation
• The CO-to-H2 Conversion Factor
• The Spitzer c2d Legacy Results: Star Formation Rates and Efficiencies; Evolution and Lifetimes
• A Hipparcos census of the nearby OB associations
• Cold Dark Clouds: The Initial Conditions for Star Formation
• A Universal Stellar Initial Mass Function? A Critical Look at Variations
• Interpreting Spectral Energy Distributions from Young Stellar Objects. I. A grid of 200,000 YSO model SEDs
• On the Star Formation Rates in Molecular Clouds
• Spitzer Survey of the Large Magellanic Cloud, Surveying the Agents of a Galaxy's Evolution (SAGE) I: Overview and Initial Results
• Re-examining Larson's Scaling Relationships in Galactic Molecular Clouds
• The HIPASS Catalogue - I. Data Presentation
• The Star Formation Rate and Gas Surface Density Relation in the Milky Way: Implications for Extragalactic Studies
• Analysis of isoplanatic high resolution stellar fields by Starfinder code
• The Spatial Distribution of Star Formation in the Solar Neighbourhood: Do all stars form in clusters?
• Bias-free Measurement of Giant Molecular Cloud Properties
• The Equilibrium State of Molecular Regions in the Outer Galaxy
• Initial Conditions of Planet Formation: Lifetimes of Primordial Disks
• The Pisa pre-main sequence tracks and isochrones. A database covering a wide range of Z, Y, mass, and age values
• An empirical criterion to classify T Tauri stars and substellar analogs using low-resolution optical spectroscopy
• Star Formation Relations in Nearby Molecular Clouds
• Filaments and ridges in Vela C revealed by Herschel: from low-mass to high-mass star-forming sites
• A Correlation Between Surface Densities of Young Stellar Objects and Gas in Eight Nearby Molecular Clouds
• A general catalogue of extended objects in the Magellanic System
• A modular set of synthetic spectral energy distributions for young stellar objects
• Physical Properties of Molecular Clouds at 2 parsec Resolution in the Low-Metallicity Dwarf Galaxy NGC 6822 and the Milky Way
• Dense cloud cores revealed by CO in the low metallicity dwarf galaxy WLM
• Photometric determination of the mass accretion rates of pre-main sequence stars. I. Method and application to the SN1987A field
• A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster
• The rate and latency of star formation in dense, massive clumps in the Milky Way
• Interstellar filaments and star formation
• Observing Simulated Protostars with Outflows: How Accurate are Protostellar Properties Inferred from SEDs?
• On the Initial Conditions for Star Formation and the IMF
• The Formation and Early Evolution of Young Massive Clusters
• Chemical compositions of Four B-type Supergiants in the SMC Wing
• The Dependence of Star Formation Efficiency on Gas Surface Density
• Metallicity and Physical Conditions in the Magellanic Bridge
• First Results from the $Herschel$ and ALMA Spectroscopic Surveys of the SMC: The Relationship Between [CII]-bright Gas and CO-bright Gas at Low Metallicity
• FUSE Observations of the Magellanic Bridge Gas toward Two Early-Type Stars: Molecules, Physical Conditions, and Relative Abundance
• The Magellanic Bridge cluster NGC 796: Deep optical AO imaging reveals the stellar content and initial mass function of a massive open cluster
• The Discovery of a Twelfth Wolf-Rayet Star in the Small Magellanic Cloud
• Classical T Tauri stars with VPHAS$+$: I: H$\alpha$ and $u$-band accretion rates in the Lagoon Nebula M8
• $K$-band integral field spectroscopy and optical spectroscopy of massive young stellar objects in the Small Magellanic Cloud
• A Panchromatic View OF NGC 602: Time-Resolved Star Formation with the Hubble and Spitzer Space Telescopes
• How common is LBV S Dor variability at low metallicity?
• Studying Relation Between Star Formation and Molecular Clumps on Subparsec Scales in 30 Doradus
• Star-forming filament models
• Pre-main sequence accretion in the low metallicity Galactic star-forming region Sh 2-284
• Spitzer View of Massive Star Formation in the Tidally Stripped Magellanic Bridge
• An HST View of the Interstellar Environments of Young Stellar Objects in the Large Magellanic Cloud
• The iron abundance of the Magellanic Bridge
• Ha Emission from the Magellanic Bridge
• Classical T-Tauri stars with VPHAS+: II: NGC 6383 in Sh 2-012
• Are There Age Spreads in Star Forming Regions?
• Clumpiness of the interstellar medium in the central parsec of the Galaxy from H2 flux extinction correlation
• ALMA resolves molecular clouds in the metal poor Magellanic Bridge A

Cited by in corpus (6)

• Transition of the initial mass function in the metal-poor environments
• CO(2-1) Survey at 9 parsec resolution in the SMC
• An Unbiased CO Survey Toward the Northern Region of the Small Magellanic Cloud with the Atacama Compact Array. II. CO Cloud Catalog
• Sequential Star Formation in the Young SMC Region NGC 602: Insights from ALMA
• SuperCAM CO(3-2) APEX survey at 6 pc resolution in the Small Magellanic Clouds
• Effects of CO-dark Gas on Measurements of Molecular Cloud Stability and the Size-Linewidth Relationship