Search Results - "Sridharan, T K"
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Self-similar fragmentation regulated by magnetic fields in a region forming massive stars
Published in Nature (London) (23-04-2015)“…Most molecular clouds are filamentary or elongated 1 , 2 , 3 . For those forming low-mass stars (<8 solar masses), the competition between self-gravity and…”
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2
Filamentary Fragmentation and Accretion in High-mass Star-forming Molecular Clouds
Published in The Astrophysical journal (01-03-2018)“…Filamentary structures are ubiquitous in high-mass star-forming molecular clouds. Their relation with high-mass star formation is still to be understood. Here…”
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3
AT2018cow: A Luminous Millimeter Transient
Published in The Astrophysical journal (20-01-2019)“…We present detailed submillimeter- through centimeter-wave observations of the extraordinary extragalactic transient AT2018cow. The apparent…”
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Survey Observations to Study Chemical Evolution from High-mass Starless Cores to High-mass Protostellar Objects. I. HC3N and HC5N
Published in The Astrophysical journal (20-02-2018)“…We carried out survey observations of HC3N and HC5N in the 42−45 GHz band toward 17 high-mass starless cores (HMSCs) and 35 high-mass protostellar objects…”
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Survey Observations to Study Chemical Evolution from High-mass Starless Cores to High-mass Protostellar Objects. II. HC3N and N2H
Published in The Astrophysical journal (20-02-2019)“…We have carried out survey observations of molecular emission lines from HC3N, N2H+, CCS, and cyclic-C3H2 in the 81-94 GHz band toward 17 high-mass starless…”
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A HOT AND MASSIVE ACCRETION DISK AROUND THE HIGH-MASS PROTOSTAR IRAS 20126+4104
Published in The Astrophysical journal (01-06-2016)“…ABSTRACT We present new spectral line observations of the CH3CN molecule in the accretion disk around the massive protostar IRAS 20126+4104 with the…”
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Search for CO Outflows toward a Sample of 69 High-Mass Protostellar Candidates. II. Outflow Properties
Published in The Astrophysical journal (01-06-2005)“…We present a study of molecular outflows toward a sample of 69 luminous IRAS point sources. The sample is associated with dense molecular gas and has…”
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Outflow and Dense Gas Emission from Massive Infrared Dark Clouds
Published in The Astrophysical journal (10-10-2007)“…Infrared dark clouds are expected to harbor sources in different, very young evolutionary stages. To better characterize these differences, we observed a…”
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High-Mass Protostellar Candidates. II. Density Structure from Dust Continuum and CS Emission
Published in The Astrophysical journal (20-02-2002)Get full text
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10
SMA Observations of the Hot Molecular Core IRAS 18566+0408
Published in The Astrophysical journal (01-10-2017)“…We present Submillimeter Array (SMA) observations toward the high-mass star-forming region IRAS 18566+0408. Observations at the 1.3 mm continuum and in several…”
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A disk of dust and molecular gas around a high-mass protostar
Published in Nature (01-09-2005)“…The processes leading to the birth of low-mass stars such as our Sun have been well studied, but the formation of high-mass (over eight times the Sun's mass, M…”
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12
High-Mass Protostellar Candidates. I. The Sample and Initial Results
Published in The Astrophysical journal (20-02-2002)Get full text
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13
Caught in the Act: The Onset of Massive Star Formation
Published in The Astrophysical journal (01-12-2005)“…Combining mid-infrared data from the Spitzer Space Telescope with cold gas and dust emission observations from the Plateau de Bure Interferometer, we…”
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14
Spitzer IRAC and MIPS Imaging of Clusters and Outflows in Nine High-Mass Star Forming Regions
Published in The Astrophysical journal (01-10-2008)“…We present Spitzer Space Telescope IRAC and MIPS observations toward a sample of nine high-mass star forming regions at a distance of around 2 kpc. Based on…”
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15
High-Mass Starless Cores
Published in The Astrophysical journal (20-11-2005)“…We report the identification of a sample of potential high-mass starless cores (HMSCs). The cores were discovered by comparing images of fields containing…”
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Tracing Turbulent Ambipolar Diffusion in Molecular Clouds
Published in The Astrophysical journal (01-08-2010)“…Though flux freezing is a good approximation frequently assumed for molecular clouds, ambipolar diffusion (AD) is inevitable at certain scales. The scale at…”
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17
Testing the Massive Disk Scenario for IRAS 18089–1732
Published in The Astrophysical journal (01-08-2005)“…Investigating in more detail the previously suggested massive disk scenario for the high-mass protostellar object IRAS 18089-1732, we observed the source in…”
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18
Multiple Jets from the High-Mass (Proto)stellar Cluster AFGL 5142
Published in The Astrophysical journal (01-04-2007)“…We present studies of the massive protocluster AFGL 5142 in the J = 2-1 transition of the CO isotopologues, SO, CH sub(3)OH, and CH sub(3)CN lines, as well as…”
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Search for CO Outflows toward a Sample of 69 High-Mass Protostellar Candidates: Frequency of Occurrence
Published in The Astrophysical journal (10-05-2001)Get full text
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20
The Direct Detection of a (Proto)Binary/Disk System in IRAS 20126+4104
Published in The Astrophysical journal (20-09-2005)“…We report the direct detection of a binary/disk system toward the high-mass (proto)stellar object IRAS 20126+4104 at infrared wavelengths. The presence of a…”
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