Zobrazeno 1 - 10
of 7 638
pro vyhledávání: '"Andrews, A. M."'
Autor:
Muñoz-Romero, Carlos E., Banzatti, Andrea, Öberg, Karin I., Pontoppidan, Klaus M., Salyk, Colette, Najita, Joan, Blake, Geoffrey A., Krijt, Sebastiaan, Arulanantham, Nicole, Pinilla, Paola, Long, Feng, Rosotti, Giovanni, Andrews, Sean M., Wilner, David J., Calahan, Jenny, Collaboration, The JDISCS
The mid-infrared water vapor emission spectrum provides a novel way to characterize the delivery of icy pebbles towards the innermost ($<5$ au) regions of planet-forming disks. Recently, JWST MIRI-MRS showed that compact disks exhibit an excess of lo
Externí odkaz:
http://arxiv.org/abs/2409.03831
Autor:
Jorquera, Sebastián, Bonnefoy, Mickaël, Pérez, Laura M., Chauvin, Gaël, Aguinaga, Adrian, Dougados, Catherine, Julo, Rémi, Demars, Dorian, Andrews, Sean M., Ricci, Luca, Zhu, Zhaohuan, kurtovic, Nicolas T., Cuello, Nicolás, Bai, Xue-ning, Birnstiel, Til, Dullemond, Cornelis, Guzmán, Viviana V.
The accretion/ejection processes in T-Tauri stars are fundamental to their physical evolution, while also impacting the properties and evolution of the circumstellar material at a time when planet formation takes place. To this date, characterization
Externí odkaz:
http://arxiv.org/abs/2408.15976
Autor:
Huang, Jane, Bergin, Edwin A., Gal, Romane Le, Andrews, Sean M., Bae, Jaehan, Keyte, Luke, Sturm, J. A.
Millimeter wavelength observations of Class II protoplanetary disks often display strong emission from hydrocarbons and high CS/SO values, providing evidence that the gas-phase C/O ratio commonly exceeds 1 in their outer regions. We present new NOEMA
Externí odkaz:
http://arxiv.org/abs/2407.01679
Autor:
Flaherty, Kevin, Hughes, A. Meredith, Simon, Jacob B., Reina, Alicia Smith, Qi, Chunhua, Bai, Xue-Ning, Andrews, Sean M., Wilner, David J., Kospal, Agnes
The amount of turbulence in protoplanetary discs around young stars is critical for determining the efficiency, timeline, and outcomes of planet formation. It is also difficult to measure. Observations are still limited, but direct measurements of th
Externí odkaz:
http://arxiv.org/abs/2406.07689
Autor:
Chung, Chia-Ying, Andrews, Sean M., Gurwell, Mark A., Wright, Melvyn, Long, Feng, Xu, Wenrui, Liu, Hauyu Baobab
We present a new SMA survey of 47 Class II sources in the Taurus-Auriga region. Our observations made 12 independent samples of flux densities over the 200-400 GHz frequency range. We tightly constrained the spectral indices of most sources to a narr
Externí odkaz:
http://arxiv.org/abs/2405.19867
Using controlled injection and recovery experiments, we devised an analysis prescription to assess the quality of dynamical measurements of protoplanetary disk gas masses based on resolved (CO) spectral line data, given observational limitations (res
Externí odkaz:
http://arxiv.org/abs/2405.19574
Autor:
Delussu, Luca, Birnstiel, Tilman, Miotello, Anna, Pinilla, Paola, Rosotti, Giovanni, Andrews, Sean M.
Publikováno v:
A&A 688, A81 (2024)
Large mm surveys of star forming regions enable the study of entire populations of planet-forming disks and reveal correlations between their observable properties. Population studies of disks have shown that the correlation between disk size and mil
Externí odkaz:
http://arxiv.org/abs/2405.14501
Planet formation occurs over a few Myr within protoplanetary discs of dust and gas, which are often assumed to evolve in isolation. However, extended gaseous structures have been uncovered around many protoplanetary discs, suggestive of late-stage in
Externí odkaz:
http://arxiv.org/abs/2405.08451
Autor:
Monsch, Kristina, Lovell, Joshua B., Berghea, Ciprian T., Edenhofer, Gordian, Keating, Garrett K., Andrews, Sean M., Bayyari, Ammar, Drake, Jeremy J., Wilner, David J.
Publikováno v:
ApJL 967:L2 (9pp), 2024
We present resolved images of IRAS 23077+6707 ("Dracula's Chivito") in 1.3 mm/225 GHz thermal dust and CO gas emission with the Submillimeter Array (SMA) and optical (0.5-$0.8\,\mu\mathrm{m}$) scattered light with the Panoramic Survey Telescope and R
Externí odkaz:
http://arxiv.org/abs/2402.01941
Autor:
Lovell, Joshua Bennett, Keating, Garrett K., Wilner, David J., Andrews, Sean M., MacGregor, Meredith, Rahman, Ramisa Akther, Rao, Ramprasad, Williams, Jonathan P.
We present evidence of variable 1.3 millimeter emission from the 1-3 Myr, SpT G2-G5 class III YSO, HD~283572. HD~283572 was observed on 8 dates with the Submillimeter Array between 2021 December and 2023 May, a total on-source time of 10.2 hours, pro
Externí odkaz:
http://arxiv.org/abs/2402.01833