692 datasets found

Keywords: young stellar objects

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  • L1157 blue lobe SiO, H2CO, and CH3OH maps

    We used the Submillimeter Array at 1.4mm to observe the blue lobe of the L1157 outflow at high spatial resolution (~3"). We detected SiO, H_2_CO, and CH_3_OH lines from several...
  • Sub-mm observations of IRS43 and IRS63

    A fundamental part of the study of star formation is to place young stellar objects in an evolutionary sequence. Establishing a robust evolutionary classification scheme allows...
  • Binary central stars of SMC PNe

    The Optical Gravitational Lensing Experiment (OGLE), originally designed to search for microlensing events, provides a rich and uniform data set suitable for studying the...
  • NGC1333-IRAS2A CALYPSO IRAM-PdBI 1mm and 3mm maps

    The structure and kinematics of Class 0 protostars on scales of a few hundred AU is poorly known. Recent observations have revealed the presence of Keplerian disks with a...
  • NGC1333-IRAS2A CALYPSO IRAM-PdBI 1mm maps

    We investigate the origin of complex organic molecules (COMs) in the gas phase around the low-mass Class 0 protostar NGC 1333-IRAS2A, to determine if the COM emission lines...
  • NGC1333-IRAS2A CALYPSO IRAM-PdBI SiO and SO maps

    The earliest evolutionary stages of low-mass protostars are characterised by hot and fast jets which remove angular momentum from the circumstellar disk, thus allowing mass...
  • Chamaeleon-MMS1 NH_3_ (1,1) and (2,2) maps

    The aim of this study is to investigate the structure and kinematics of the nearby candidate first hydrostatic core Cha-MMS1. Cha-MMS1 was mapped in the NH_3_(1,1) line and the...
  • NGC 3503 YSO candidates

    We present here a follow-up study of the molecular gas and dust in the environs of the star forming region NGC 3503. This study aims at dealing with the interaction of the HII...
  • JHK and IRAC photometry of Sh2-90 YSOs

    We investigate the star formation activity in the molecular complex associated with the Galactic HII region Sh2-90. We obtain the distribution of the ionized and cold neutral...
  • Carina nebula optically identified YSOs

    The low obscuration and proximity of the Carina nebula make it an ideal place to study the ongoing star formation process and impact of massive stars on low-mass stars in their...
  • NGC 1333 IRAS 4A H_2_O observations

    Water is a key molecule in protostellar environments because its line emission is very sensitive to both the chemistry and the physical conditions of the gas. Observations of...
  • NGC 7129 FIRS 2 interferometric 1-D spectrum

    NGC 7129 FIRS 2 (hereafter FIRS 2) is an intermediate-mass (2 to 8M_{sun}) protostar located at a distance of 1250pc. High spatial resolution observations are required to...
  • HH 212 CO, CS and 850um ALMA images

    We wish to exploit the unmatched combination of high angular resolution, high sensitivity, high-imaging fidelity, and spectral coverage provided by ALMA to shed light on the...
  • G35.20-0.74N continuum and line data cubes

    The formation process of high-mass stars (with masses >8M_{sun}_) is still poorly understood, and represents a challenge from both the theoretical and observational points of...
  • Polarization hole in a starless core

    We aim to investigate the polarization properties of a starless core in a very early evolutionary stage. Linear polarization data reveal the properties of the dust grains in the...
  • Molecular gas associated with IRAS 10361-5830

    We analyze the distribution of the molecular gas and dust in the molecular clump linked to IRAS 10361-5830, located in the environs of the bubble-shaped HII region Gum 31 in the...
  • APEX spectra of massive YSOs

    Molecular outflows are a direct consequence of accretion, and therefore they represent one of the best tracers of accretion processes in the still poorly understood early phases...
  • The VISTA Carina Nebula Survey

    The Carina Nebula is one of the most massive and active star-forming regions in our Galaxy and has been studied with numerous multiwavelength observations in the past five...
  • H_2_O spectra of 29 nearby Class 0/I protostars

    Outflows are an important part of the star formation process as both the result of ongoing active accretion and one of the main sources of mechanical feedback on small scales....
  • Young stellar object candidates toward Orion

    We analyze 359 ultraviolet tiles from the All Sky Imaging Survey of the space mission GALEX covering roughly 400 square degrees toward the Orion star-forming region. There are a...
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