Search Results - "Watson, Dan M."
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The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. II. A Statistical Characterization of Class 0 and Class I Protostellar Disks
Published in The Astrophysical journal (20-02-2020)“…We have conducted a survey of 328 protostars in the Orion molecular clouds with the Atacama Large Millimeter/submillimeter Array at 0.87 mm at a resolution of…”
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The Herschel Orion Protostar Survey: Luminosity and Envelope Evolution
Published in The Astrophysical journal (10-05-2017)“…The Herschel Orion Protostar Survey obtained well-sampled 1.2-870 m spectral energy distributions (SEDs) of over 300 protostars in the Orion molecular clouds,…”
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Extension of HOPS out to 500 pc (eHOPS). I. Identification and Modeling of Protostars in the Aquila Molecular Clouds
Published in The Astrophysical journal. Supplement series (01-06-2023)“…Abstract We present a Spitzer/Herschel focused survey of the Aquila molecular clouds ( d ∼ 436 pc) as part of the eHOPS (extension of the Herschel orion…”
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Why Are (Almost) All the Protostellar Outflows Aligned in Serpens Main?
Published in The Astrophysical journal (01-09-2024)“…Abstract We present deep 1.4–4.8 μ m JWST-NIRCam imaging of the Serpens Main star-forming region and identify 20 candidate protostellar outflows, most with…”
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HOPS 361-C’s Jet Decelerating and Precessing through NGC 2071 IR
Published in The Astrophysical journal (01-05-2023)“…Abstract We present a two-epoch Hubble Space Telescope study of NGC 2071 IR highlighting HOPS 361-C, a protostar producing an arced 0.2 parsec-scale jet. The…”
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An Analysis of the Complex and Compact Outflow Cavity Carved by HOPS 361-A in NGC 2071 IR
Published in The Astrophysical journal (01-10-2024)“…Abstract We present a combined Stratospheric Observatory for Infrared Astronomy (SOFIA) and two-epoch Hubble Space Telescope (HST) study of the region NGC 2071…”
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MIRI MRS Observations of β Pictoris. I. The Inner Dust, the Planet, and the Gas
Published in The Astrophysical journal (01-04-2024)“…Abstract We present JWST MIRI Medium Resolution Spectrograph (MRS) observations of the β Pictoris system. We detect an infrared excess from the central…”
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CHARACTERIZING THE YOUNGEST HERSCHEL-DETECTED PROTOSTARS. II. MOLECULAR OUTFLOWS FROM THE MILLIMETER AND THE FAR-INFRARED
Published in The Astrophysical journal (01-11-2016)“…ABSTRACT We present Combined Array for Research in Millimeter-wave Astronomy (CARMA) CO ( ) observations and Herschel PACS spectroscopy, characterizing the…”
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Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5 μm Spectral Mapping of Five Young Protostars
Published in The Astrophysical journal (01-05-2024)“…Abstract Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9–28 μ m spectral cubes of five…”
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EVOLUTION OF MASS OUTFLOW IN PROTOSTARS
Published in The Astrophysical journal (01-09-2016)“…ABSTRACT We have surveyed 84 Class 0, Class I, and flat-spectrum protostars in mid-infrared [Si ii], [Fe ii], and [S i] line emission, and 11 of these in…”
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MIRI MRS Observations of Beta Pictoris. II. The Spectroscopic Case for a Recent Giant Collision
Published in The Astrophysical journal (01-10-2024)“…Abstract Modeling observations of the archetypal debris disk around β Pic, obtained in 2023 January with the MIRI Medium Resolution Spectrograph on board JWST,…”
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Star Formation Under the Outflow: The Discovery of a Non-thermal Jet from OMC-2 FIR 3 and Its Relationship to the Deeply Embedded FIR 4 Protostar
Published in The Astrophysical journal (01-05-2017)“…We carried out multiwavelength (0.7-5 cm), multi-epoch (1994-2015) Very Large Array (VLA) observations toward the region enclosing the bright far-IR sources…”
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JWST/MIRI Detection of Suprathermal OH Rotational Emissions: Probing the Dissociation of the Water by Lyα Photons near the Protostar HOPS 370
Published in Astrophysical journal. Letters (01-05-2024)“…Abstract Using the MIRI medium-resolution spectrometer on JWST, we have detected pure rotational, suprathermal OH emissions from the vicinity of the…”
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The development of a protoplanetary disk from its natal envelope
Published in Nature (London) (30-08-2007)“…Class 0 protostars, the youngest type of young stellar objects, show many signs of rapid development from their initial, spheroidal configurations, and…”
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ASTEROID BELTS IN DEBRIS DISK TWINS: VEGA AND FOMALHAUT
Published in The Astrophysical journal (01-02-2013)“…Vega and Fomalhaut are similar in terms of mass, ages, and global debris disk properties; therefore, they are often referred to as "debris disk twins." We…”
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THE SPITZER INFRARED SPECTROGRAPH DEBRIS DISK CATALOG. II. SILICATE FEATURE ANALYSIS OF UNRESOLVED TARGETS
Published in The Astrophysical journal (10-01-2015)“…During the Spitzer Space Telescope cryogenic mission, astronomers obtained Infrared Spectrograph (IRS) observations of hundreds of debris disk candidates that…”
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A Spitzer IRS Study of Infrared Variability in Transitional and Pre-transitional Disks Around T Tauri Stars
Published in The Astrophysical journal (10-02-2011)“…We present a Spitzer IRS study of variability in 14 T Tauri stars in the Taurus and Chamaeleon star-forming regions. The sample is composed of transitional and…”
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The Rate, Amplitude, and Duration of Outbursts from Class 0 Protostars in Orion
Published in Astrophysical journal. Letters (01-01-2022)“…Abstract At least half of a protostar’s mass is accreted in the Class 0 phase, when the central protostar is deeply embedded in a dense, infalling envelope. We…”
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The Herschel Orion Protostar Survey: Far-infrared Photometry and Colors of Protostars and Their Variations across Orion A and B
Published in The Astrophysical journal (01-12-2020)“…Abstract The degree to which the properties of protostars are affected by environment remains an open question. To investigate this, we look at the Orion A and…”
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Trends in Silicates in the β Pictoris Disk
Published in The Astrophysical journal (01-07-2022)“…Abstract While β Pic is known to host silicates in ring-like structures, whether the properties of these silicate dust vary with stellocentric distance remains…”
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