English
Related papers

Related papers: Spatially Resolving Substructures within the Massi…

200 papers

Up to now only a few intermediate-mass molecular outflows have been studied with enough high-angular resolution. The aim of this work is to study in detail the intermediate-mass YSO IRAS 22272+6358A, which is embedded in L1206, and its…

Astrophysics · Physics 2009-11-11 Maria T. Beltran , Josep M. Girart , Robert Estalella

We present 1.05 mm ALMA observations of the deeply embedded high-mass protocluster G11.92-0.61, designed to search for low-mass cores within the accretion reservoir of the massive protostars. Our ALMA mosaic, which covers an extent of ~0.7…

Astrophysics of Galaxies · Physics 2017-05-10 C. J. Cyganowski , C. L. Brogan , T. R. Hunter , R. Smith , J. M. D. Kruijssen , I. A. Bonnell , Q. Zhang

We present maps of the 850 micron and 450 micron continuum emission seen towards a sample of 68 high-mass protostellar candidates with luminosities ranging from 10^2.5 to 10^5 solar luminosity. Most of these candidate high-mass stars are in…

Astrophysics · Physics 2009-11-10 S. J. Williams , G. A. Fuller , T. K. Sridharan

We have conducted millimeter interferometric observations of the Orion Molecular Cloud-2 (OMC-2) FIR 6 region at an angular resolution of $\sim$ 4$\arcsec$ - 7$\arcsec$ with the Nobeyama Millimeter Array (NMA). In the 3.3 mm continuum…

Solar and Stellar Astrophysics · Physics 2015-05-13 Yoshito Shimajiri , Satoko Takahashi , Shigehisa Takakuwa , Masao Saito , Ryohei Kawabe

We present a Submillimeter Array study in the 1.3 mm waveband of the NGC 7538 IRS 1--3 massive star-forming region. The brightest core in the mm continuum map, MM1, harbors the IRS 1 young O star. The core has a gas temperature of about 245…

Astrophysics of Galaxies · Physics 2015-05-20 Keping Qiu , Qizhou Zhang , Karl M. Menten

We present Submillimeter Array (SMA) observations of seven massive molecular clumps which are dark in the far-infrared for wavelengths up to 70 $\mu$m. Our 1.3 mm continuum images reveal 44 dense cores, with gas masses ranging from 1.4 to…

Astrophysics of Galaxies · Physics 2019-12-11 Shanghuo Li , Qizhou Zhang , Thushara Pillai , Ian W. Stephens , Junzhi Wang , Fei Li

We study the astrochemical diagnostics of the isolated massive protostar G28.20-0.05. We analyze data from ALMA 1.3~mm observations with resolution of 0.2 arcsec ($\sim$1,000 au). We detect emission from a wealth of species, including…

We have observed the three low-mass protostars, IRAS 15398$-$3359, L1527 IRS and TMC-1A, with the ALMA 12-m array, the ACA 7-m array, and the IRAM-30m and APEX telescopes in the C$^{18}$O $J=2$-1 emission. Overall, the C$^{18}$O emission…

Solar and Stellar Astrophysics · Physics 2023-01-18 Jinshi Sai , Nagayoshi Ohashi , Hsi-Wei Yen , Anaëlle J. Maury , Sébastien Maret

Intermediate mass protostars, the bridge between the very common solar-like protostars and the more massive, but rarer, O and B stars, can only be studied at high physical spatial resolutions in a handful of clouds. In this paper we present…

Astrophysics of Galaxies · Physics 2015-06-04 Tim van Kempen , Steve Longmore , Doug Johnstone , Thushara Pillai , Asuncion Fuente

The young massive star-forming region IRAS05358+3543 was observed at high-spatial resolution in the continuum emission at 3.1 and 1.2mm with the Plateau de Bure Interferometer, and at 875 and 438mum with the Submillimeter Array. We resolve…

Astrophysics · Physics 2009-11-13 H. Beuther , S. Leurini , P. Schilke , F. Wyrowski , K. M. Menten , Q. Zhang

Using the $\approx$15km ALMA long baselines, we imaged the Stokes $I$ emission and linearly polarized intensity ($PI$) in the 1.1-mm continuum band of a very young intermediate-mass protostellar source, MMS 6, in the Orion Molecular…

Aims. To constrain the physical processes that lead to the birth of high-mass stars it is mandatory to study the very first stages of their formation. We search for high-mass analogs of low-mass prestellar cores in W43-MM1. Methods. We…

Since most high- and intermediate-mass protostars are at great distance and form in clusters, high linear resolution observations are needed to investigate their physical properties. To study the gas in the innermost region around the…

Astrophysics · Physics 2009-11-13 S. Leurini , H. Beuther , P. Schilke , F. Wyrowski , Q. Zhang , K. M. Menten

We present a high-resolution, multi-wavelength study of the massive protostellar cluster NGC 6334I(N) that combines new spectral line data from the Submillimeter Array (SMA) and VLA with a reanalysis of archival VLA continuum data, 2MASS…

Astrophysics of Galaxies · Physics 2014-11-20 C. L. Brogan , T. R. Hunter , C. J. Cyganowski , R. Indebetouw , H. Beuther , K. M. Menten , S. Thorwirth

We present observations of 1.2-mm dust continuum emission, made with the Swedish ESO Submillimeter Telescope, towards eighteen luminous IRAS point sources, all with colors typical of compact HII regions and associated with CS(2-1) emission,…

Astrophysics · Physics 2011-02-11 Guido Garay , Diego Mardones , Kate J. Brooks , Liza Videla , Yanett Contreras

We present the Mass Assembly of Stellar Systems and their Evolution with the SMA (MASSES) survey, which uses the Submillimeter Array (SMA) interferometer to map the continuum and molecular lines for all 74 known Class 0/I protostellar…

Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (~ 10^6 cm^-3 or higher) and being centrally concentrated are expected to be embryos of…

The GGD27 complex includes the HH 80-81-80N system, which is one of the most powerful molecular outflows associated with a high mass star-forming region observed up to now. This outflow is powered by the star associated with the source IRAS…

Solar and Stellar Astrophysics · Physics 2015-05-20 M. Fernández-López , S. Curiel , J. M. Girart , P. T. P. Ho , N. Patel , Y. Gomez

We have performed survey-type observations in 1 mm continuum and molecular lines toward dense cores (32 prestellar + 7 protostellar) with an average density of $\gtrsim$10$^5$ cm$^{-3}$ in the Taurus molecular clouds using the Atacama Large…