English
Related papers

Related papers: Proplyds in the Flame Nebula NGC 2024

200 papers

Star formation is essential in galaxy evolution and the cycling of matter. The support of interstellar clouds against gravitational collapse by magnetic (B-) fields has been proposed to explain the low observed star formation efficiency in…

We have pursued two different methods to analyze the old stellar population near the Galactic plane, using data from the 2MASS survey. The first method is based on the isolation of the red clump giant population in the color-magnitude…

Astrophysics · Physics 2009-11-07 M. Lopez-Corredoira , A. Cabrera-Lavers , F. Garzon , P. L. Hammersley

We present photometry at 3-24um for all known members of the Upper Scorpius association (~11 Myr) based on all images of these objects obtained with the Spitzer Space Telescope and the Wide-field Infrared Survey Explorer. We have used these…

Astrophysics of Galaxies · Physics 2015-06-11 K. L. Luhman , E. E. Mamajek

We have performed hydrodynamic and radiative transfer calculations of a photoevaporating disc around a Herbig Ae/Be star to determine the evolution and observational impact of dust entrained in the wind. We find that the wind selectively…

Solar and Stellar Astrophysics · Physics 2015-05-20 James E. Owen , Barbara Ercolano , Cathie J. Clarke

The NGC 2024 FIR 5/6 region was observed in the 6.9 mm continuum with an angular resolution of about 1.5 arcsec. The 6.9 mm continuum map shows four compact sources, FIR 5w, 5e, 6c, and 6n, as well as an extended structure of the ionization…

Astrophysics of Galaxies · Physics 2015-06-04 Minho Choi , Jeong-Eun Lee , Miju Kang

We analyze high-quality stellar catalogs for 24 young and nearby (within 1 kpc) embedded clusters and present a catalogue of 32 groups which have a high concentration of protostars. The median effective radius of these groups is 0.17 pc.…

Astrophysics of Galaxies · Physics 2021-04-23 Juan Li , Philip C. Myers , Helen Kirk , Robert A. Gutermuth , Michael M. Dunham , Riwaj Pokhrel

We describe results from a survey for J=3-2 12CO emission from visible stars with an infrared excess. The line is clearly detected in 21 objects, with molecular gas (>10^-3 Jupiter masses) common in targets with infrared excesses >0.01…

Astrophysics · Physics 2009-11-10 W. R. F. Dent , J. S. Greaves , I. M. Coulson

We couple star cluster formation and feedback simulations of a Carina-like star forming region with 1D disc evolutionary models to study the impact of external photoevaporation on disc populations in massive star forming regions. To…

Earth and Planetary Astrophysics · Physics 2022-03-30 Lin Qiao , Thomas J. Haworth , Andrew D. Sellek , Ahmad A. Ali

Context: Debris discs orbiting young stars are key to understand dust evolution and the planetary formation process. We take advantage of a recent membership analysis of the 30 Myr nearby open cluster IC 4665 based on the Gaia and DANCe…

Solar and Stellar Astrophysics · Physics 2020-09-30 Núria Miret-Roig , Nuria Huélamo , Hervé Bouy

We present stellar density maps of the Galactic outer disc with red clump stars from the LAMOST data. These samples are separated into younger (mean age ~ 2.7 Gyr) and older (mean age ~ 4.6 Gyr) populations so that they can trace the…

Astrophysics of Galaxies · Physics 2017-08-16 Jun-chen Wan , Chao Liu , Li-cai Deng , Yue Wu

We investigated an isolated, globule-shaped object (0.37x0.11 pc), located near the centre of the Cygnus OB2 cluster and named proplyd #7 in optical observations. The source can be a massive star (with or without disc) with a HII region or…

We present the results of a 2.7 mm continuum interferometric survey of 24 young stellar objects in 11 fields. The target objects range from deeply embedded Class 0 sources to optical T Tauri sources. This is the first sub-arcsecond survey…

Astrophysics · Physics 2009-10-12 Leslie W. Looney , Lee G. Mundy , W. J. Welch

The Milky Way nuclear star cluster (NSC) is located within the nuclear stellar disc (NSD) in the Galactic centre. It is not fully understood if the formation and evolution of these two components are connected, and how they influence each…

Astrophysics of Galaxies · Physics 2022-06-08 A. Feldmeier-Krause

Given the complex nature of galaxies' interstellar medium (ISM), multi-wavelength data are required to probe the interplay among gas, dust, and stellar populations. Spiral galaxies are ideal laboratories for such a goal as they are rich in…

Astrophysics of Galaxies · Physics 2024-06-12 Selçuk Topal

We present observations with the Submillimeter Array of the continuum emission at $\lambda = 1.3$ mm from 62 young stars surrounded by a protoplanetary disk in the Serpens star-forming region. The typical angular resolution for the survey…

Astrophysics of Galaxies · Physics 2017-12-13 Charles J. Law , Luca Ricci , Sean M. Andrews , David J. Wilner , Chunhua Qi

We analyze TYPHOON long slit absorption line spectra of the starburst barred spiral galaxy NGC 1365 obtained with the Progressive Integral Step Method covering an area of 15 square kpc. Applying a population synthesis technique, we…

We present first results of XMM-Newton X-ray observations of the infrared cluster lying near the NGC 2071 reflection nebula in the Orion B region. This cluster is of interest because it is one of the closest regions known to harbor embedded…

Astrophysics · Physics 2009-11-11 Stephen L. Skinner , Audrey E. Simmons , Marc Audard , Manuel Guedel

We present near-infrared JHKs and narrow-band H2(1-0) photometric observations of the W51A region, obtained with GTC EMIR, aiming to characterize its young stellar population and provide mass estimates for individual cluster members and the…

Solar and Stellar Astrophysics · Physics 2025-08-01 Aden Dawson , Adam Ginsburg , Carlos Roman-Zuniga

In order to investigate the Galactic-scale environmental effects on the evolution of protoplanetary disks, we explored the near-infrared (NIR) disk fraction of the Quartet cluster, which is a young cluster in the innermost Galactic disk at…

Solar and Stellar Astrophysics · Physics 2016-02-17 Chikako Yasui , Naoto Kobayashi , Satoshi Hamano , Sohei Kondo , Natsuko Izumi , Masao Saito , Alan T. Tokunaga

We present VLT/MUSE Narrow Field Mode (NFM) observations of a pair of disc-bearing young stellar objects towards the Orion Bar: 203-504 and 203-506. Both of these discs are subject to external photoevaporation, where winds are launched from…