Search Publications
Electron Heat Flux in the Solar Wind: Generalized Approaches to Fluid Transport With a Variety of Skewed Velocity Distributions
Cranmer, Steven R.; Schiff, Avery J.
In the solar corona and solar wind, electron heat conduction is an important process that transports energy over large distances and helps determine the spatial variation of temperature. High-density regions undergoing rapid particle-particle collisions exhibit a heat flux described well by classical Spitzer-Härm theory. However, much of the helio…
Non-synchronous rotations in massive binary systems. II. The case of HD 96264A
Gamen, R.; Barbá, R. H.; Morrell, N. I. +3 more
Context. The OWN Survey has detected several O-type stars with composite spectra whose individual components show very different line broadening. Some of these stars have been revealed as binary systems whose components are asynchronous. This fact may be related to the processes acting in these systems (e.g., angular-momentum transfer, tidal force…
IGRINS RV: A Precision Radial Velocity Pipeline for IGRINS Using Modified Forward Modeling in the Near-infrared
Tang, Shih-Yun; Johns-Krull, Christopher M.; Prato, L. +7 more
Application of the radial velocity (RV) technique in the near-infrared is valuable because of the diminished impact of stellar activity at longer wavelengths, making it particularly advantageous for the study of late-type stars but also for solar-type objects. In this paper, we present the IGRINS RV open-source python pipeline for computing infrar…
The C18O core mass function toward Orion A: Single-dish observations
Sanhueza, Patricio; Kataoka, Akimasa; Nakamura, Fumitaka +6 more
We have performed an unbiased dense core survey toward the Orion A Giant Molecular Cloud in the C18O (J = 1-0) emission line taken with the Nobeyama Radio Observatory (NRO) 45 m telescope. The effective angular resolution of the map is 26″, which corresponds to ~0.05 pc at a distance of 414 pc. By using the Herschel-Planck H2…
Constraints on Emission Source Locations of Methane Detected by Mars Science Laboratory
Newman, C. E.; Richardson, M. I.; Viúdez-Moreiras, D.
The Sample Analysis at Mars (SAM) instrument on the Mars Science Laboratory (MSL) Curiosity rover has detected both methane spikes and variable background methane abundance in recent years in Gale Crater, Mars. While methane spikes have been attributed to a hypothetical local or regional source emission, the background measurements acquired during…
Chemically Fresh Gas Inflows Detected in a Nearby High-mass Star-forming Region
Kim, Kee-Tae; Liu, Tie; Mei, Ying +9 more
We report the detection of a chemically fresh inflow that is feeding high-mass young-stellar-object (HMYSO) growth in the nearby high-mass star-forming region G352.63 made with both the Atacama Large Millimeter/submillimeter Array (ALMA) and the Submillimeter Array (SMA). High-quality images of the dust and molecular lines from both ALMA and SMA h…
The OTELO survey. Faint end of the luminosity function of [O II]3727 emitters at ⟨z⟩ = 1.43
Cepa, J.; Pérez García, A. M.; Alfaro, E. J. +15 more
Aims: In this paper, we aim to study the main properties and luminosity function (LF) of the [O II]3727 emitters detected in the OTELO survey in order to characterise the star formation processes in low-mass galaxies at z ∼ 1.43 and to constrain the faint-end of the LF.
Methods: Here, we describe the selection method and analysis of the …
Clustering of low-mass stars around Herbig Be star IL Cep - evidence of 'Rocket Effect' using Gaia EDR3 ?
Arun, R.; Mathew, Blesson; Manoj, P. +7 more
We study the formation and the kinematic evolution of the early-type Herbig Be star IL Cep and its environment. The young star is a member of the Cep OB3 association, at a distance of 798 ± 9 pc, and has a 'cavity' associated with it. We found that the B0V star HD 216658, which is astrometrically associated with IL Cep, is at the centre of the cav…
A Multiwavelength Study of the Formation of the AFGL 333-Ridge
Wang, Jun-Jie; Xu, Jin-Long; Xu, Ye +1 more
We presented a multiwavelength study of the AFGL 333-Ridge. The molecular line data reveals that the AFGL 333-Ridge has two independent velocity components at -50.5 and -48.0 km s-1. In the position-velocity diagram, the bridge feature connects with two parts that are spatially correlated but separated in velocity. This observational ev…
Optical detection of the rapidly spinning white dwarf in V1460 Her
Dhillon, V. S.; Pelisoli, Ingrid; Breedt, E. +15 more
Accreting magnetic white dwarfs offer an opportunity to understand the interplay between spin-up and spin-down torques in binary systems. Monitoring of the white dwarf spin may reveal whether the white dwarf spin is currently in a state of near-equilibrium, or of unidirectional evolution towards longer or shorter periods, reflecting the recent his…