Search Results - "Megeath, S. Thomas"

The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. III. Substructures in Protostellar Disks by Sheehan, Patrick D., Tobin, John J., Federman, Sam, Megeath, S. Thomas, Looney, Leslie W.

“…The prevalence of substructures in ∼1-10 Myr old protoplanetary disks, which are often linked to planet formation, has raised the question of how early such…”
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Constraining the Rate of Protostellar Accretion Outbursts in the Orion Molecular Clouds by Fischer, William J., Safron, Emily, Megeath, S. Thomas

“…Outbursts due to dramatic increases in the mass accretion rate are the most extreme type of variability in young stellar objects. We searched for outbursts…”
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The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. VI. Insights from Radiative Transfer Modeling by Sheehan, Patrick D., Tobin, John J., Looney, Leslie W., Megeath, S. Thomas

“…Abstract We present Markov Chain Monte Carlo radiative transfer modeling of a joint ALMA 345 GHz and spectral energy distribution data set for a sample of 97…”
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An HST Survey of Protostellar Outflow Cavities: Does Feedback Clear Envelopes? by Habel, Nolan M., Thomas Megeath, S., Jon Booker, Joseph, Fischer, William J., Kounkel, Marina, Poteet, Charles, Furlan, Elise, Stutz, Amelia, Manoj, P., Tobin, John J., Nagy, Zsofia, Pokhrel, Riwaj, Watson, Dan

“…Abstract We study protostellar envelope and outflow evolution using Hubble Space Telescope NICMOS or WFC3 images of 304 protostars in the Orion molecular…”
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The Herschel Orion Protostar Survey: Luminosity and Envelope Evolution by Fischer, William J., Megeath, S. Thomas, Furlan, Elise, Ali, Babar, Stutz, Amelia M., Tobin, John J., Osorio, Mayra, Stanke, Thomas, Manoj, P., Poteet, Charles A., Booker, Joseph J., Hartmann, Lee, Wilson, Thomas L., Myers, Philip C., Watson, Dan M.

“…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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Star-Gas Surface Density Correlations in 12 Nearby Molecular Clouds. I. Data Collection and Star-sampled Analysis by Pokhrel, Riwaj, Gutermuth, Robert A., Betti, Sarah K., Offner, Stella S. R., Myers, Philip C., Megeath, S. Thomas, Sokol, Alyssa D., Ali, Babar, Allen, Lori, Allen, Thomas S., Dunham, Michael M., Fischer, William J., Henning, Thomas, Heyer, Mark, Hora, Joseph L., Pipher, Judith L., Tobin, John J., Wolk, Scott J.

“…We explore the relation between the stellar mass surface density and the mass surface density of molecular hydrogen gas in 12 nearby molecular clouds that are…”
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A map of the day-night contrast of the extrasolar planet HD 189733b by Knutson, Heather A, Cooper, Curtis S, Charbonneau, David, Megeath, S. Thomas, Fortney, Jonathan J, Cowan, Nicolas B, Agol, Eric, Allen, Lori E, Showman, Adam P

“…'Hot Jupiter' extrasolar planets are expected to be tidally locked because they are close (<0.05 astronomical units, where 1 au is the average Sun-Earth…”
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300: An ACA 870 μm Continuum Survey of Orion Protostars and Their Evolution by Federman, Samuel, Megeath, S. Thomas, Tobin, John J., Sheehan, Patrick D., Pokhrel, Riwaj, Habel, Nolan, Stutz, Amelia M., Fischer, William J., Hartmann, Lee, Stanke, Thomas, Narang, Mayank, Osorio, Mayra, Atnagulov, Prabhani, Rahatgaonkar, Rohan

“…Abstract We present an 870 μ m continuum survey of 300 protostars from the Herschel Orion Protostar Survey using the Atacama Compact Array (ACA). These data…”
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HOPS 361-C’s Jet Decelerating and Precessing through NGC 2071 IR by Rubinstein, Adam E., Karnath, Nicole, Quillen, Alice C., Federman, Samuel, Green, Joel D., Chambers, Edward T., Watson, Dan M., Megeath, S. Thomas

“…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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The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. IV. Unveiling the Embedded Intermediate-Mass Protostar and Disk within OMC2-FIR3/HOPS-370 by Tobin, John J., Sheehan, Patrick D., Reynolds, Nickalas, Megeath, S. Thomas, Osorio, Mayra, Anglada, Guillem, Díaz-Rodríguez, Ana Karla, Furlan, Elise, Kratter, Kaitlin M., Offner, Stella S. R., Looney, Leslie W., Kama, Mihkel, Li, Zhi-Yun, van ’t Hoff, Merel L. R., Sadavoy, Sarah I., Karnath, Nicole

“…Abstract We present ALMA (0.87 and 1.3 mm) and VLA (9 mm) observations toward the candidate intermediate-mass protostar OMC2-FIR3 (HOPS-370; L bol  ∼ 314 L ⊙ )…”
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The Broadband Infrared Emission Spectrum of the Exoplanet HD 189733b by Charbonneau, David, Knutson, Heather A, Barman, Travis, Allen, Lori E, Mayor, Michel, Megeath, S. Thomas, Queloz, Didier, Udry, Stéphane

“…We present Spitzer Space Telescope time series photometry of the exoplanet system HD 189733 spanning two times of secondary eclipse, when the planet passes out…”
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A Spitzer Census of Transitional Protoplanetary Disks with AU-scale Inner Holes by Muzerolle, James, Allen, Lori E, Megeath, S. Thomas, Hernández, Jesús, Gutermuth, Robert A

“…Protoplanetary disks with AU-scale inner clearings, often referred to as transitional disks, provide a unique sample for understanding disk dissipation…”
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The VLA/ALMA Nascent Disk And Multiplicity (VANDAM) Survey of Orion Protostars. V. A Characterization of Protostellar Multiplicity by Tobin, John J., Offner, Stella S. R., Kratter, Kaitlin M., Megeath, S. Thomas, Sheehan, Patrick D., Looney, Leslie W., Diaz-Rodriguez, Ana Karla, Osorio, Mayra, Anglada, Guillem, Sadavoy, Sarah I., Furlan, Elise, Segura-Cox, Dominique, Karnath, Nicole, van ’t Hoff, Merel L. R., van Dishoeck, Ewine F., Li, Zhi-Yun, Sharma, Rajeeb, Stutz, Amelia M., Tychoniec, Łukasz

“…Abstract We characterize protostellar multiplicity in 20 Current address: Niels Bohr Institute, University of Copenhagen, Øster Voldgade 5–7, DK-1350,…”
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An Analysis of the Complex and Compact Outflow Cavity Carved by HOPS 361-A in NGC 2071 IR by Karnath, Nicole, Rubinstein, Adam E., Federman, Samuel, Quillen, Alice C., Green, Joel D., Chambers, Edward T., Watson, Dan M., Megeath, S. Thomas, Coudé, Simon, Justen, Matthias, Narang, Mayank, Goldman, Steve, Tobin, John J.

“…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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Dissecting the Different Components of the Modest Accretion Bursts of the Very Young Protostar HOPS 373 by Yoon, Sung-Yong, Herczeg, Gregory J., Lee, Jeong-Eun, Lee, Ho-Gyu, Johnstone, Doug, Varricatt, Watson, Tobin, John J., Peña, Carlos Contreras, Mairs, Steve, Hodapp, Klaus, Manoj, P., Osorio, Mayra, Megeath, S. Thomas

“…Abstract Observed changes in protostellar brightness can be complicated to interpret. In our James Clerk Maxwell Telescope (JCMT) Transient Monitoring Survey,…”
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CHARACTERIZING THE YOUNGEST HERSCHEL-DETECTED PROTOSTARS. II. MOLECULAR OUTFLOWS FROM THE MILLIMETER AND THE FAR-INFRARED by Tobin, John J., Stutz, Amelia M., Manoj, P., Megeath, S. Thomas, Karska, Agata, Nagy, Zsofia, Wyrowski, Friedrich, Fischer, William J., Watson, Dan M., Stanke, Thomas

“…ABSTRACT We present Combined Array for Research in Millimeter-wave Astronomy (CARMA) CO ( ) observations and Herschel PACS spectroscopy, characterizing the…”
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Extension of HOPS out to 500 pc (eHOPS). I. Identification and Modeling of Protostars in the Aquila Molecular Clouds by Pokhrel, Riwaj, Megeath, S. Thomas, Gutermuth, Robert A., Furlan, Elise, Fischer, William J., Federman, Samuel, Tobin, John J., Stutz, Amelia M., Hartmann, Lee, Osorio, Mayra, Watson, Dan M., Stanke, Thomas, Manoj, P., Narang, Mayank, Atnagulov, Prabhani, Habel, Nolan, Zakri, Wafa

“…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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EVOLUTION OF MASS OUTFLOW IN PROTOSTARS by Watson, Dan M., Calvet, Nuria P., Fischer, William J., Forrest, W. J., Manoj, P., Megeath, S. Thomas, Melnick, Gary J., Najita, Joan, Neufeld, David A., Sheehan, Patrick D., Stutz, Amelia M., Tobin, John J.

“…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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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 by Osorio, Mayra, Díaz-Rodríguez, Ana K., Anglada, Guillem, Megeath, S. Thomas, Rodríguez, Luis F., Tobin, John J., Stutz, Amelia M., Furlan, Elise, Fischer, William J., Manoj, P., Gómez, José F., González-García, Beatriz, Stanke, Thomas, Watson, Dan M., Loinard, Laurent, Vavrek, Roland, Carrasco-González, Carlos

“…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 by Neufeld, David A., Manoj, P., Tyagi, Himanshu, Narang, Mayank, Watson, Dan M., Megeath, S. Thomas, Van Dishoeck, Ewine F., Gutermuth, Robert A., Stanke, Thomas, Yang, Yao-Lun, Rubinstein, Adam E., Anglada, Guillem, Beuther, Henrik, Caratti o Garatti, Alessio, Evans, Neal J., Federman, Samuel, Fischer, William J., Green, Joel, Klaassen, Pamela, Looney, Leslie W., Osorio, Mayra, Nazari, Pooneh, Tobin, John J., Tychoniec, Łukasz, Wolk, Scott

“…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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