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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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19 papers · 2 filters
Protostar L1455 IRS1: Rotating Disk Connecting to Filamentary Network
Hsuan-Gu Chou, Hsi-Wei Yen, Patrick M. Koch +1
We conducted IRAM-30m C18O (2-1) and SMA 1.3mm continuum, 12CO (2-1), and C18O (2-1) observations toward the Class 0/I protostar L1455 IRS1 in Perseus. The IRAM results show L1455…
On the metallicity of open clusters. III. Homogenised sample
M. Netopil, E. Paunzen, U. Heiter +1
Open clusters are known as excellent tools for various topics in Galactic research. For example, they allow accurately tracing the chemical structure of the Galactic disc. However,…
HD141569A: disk dissipation caught in action
J. Péricaud, E. Di Folco, A. Dutrey +3
Debris disks are usually thought to be gas-poor, the gas being dissipated by accretion or evaporation during the protoplanetary phase. HD141569A is a 5 Myr old star harboring a fam…
Linking low- to high-mass YSOs with Herschel-HIFI observations of water
I. San Jose-Garcia, J. C. Mottram, E. F. van Dishoeck +7
Water probes the dynamics in young stellar objects (YSOs) effectively, especially shocks in molecular outflows. It is a key molecule for exploring whether the physical properties o…
From forced collapse to H ii region expansion in Mon R2: Envelope density structure and age determination with Herschel
P. Didelon, F. Motte, P. Tremblin +32
The surroundings of HII regions can have a profound influence on their development, morphology, and evolution. This paper explores the effect of the environment on H II regions in…
SOFIA/FORCAST Observations of Warm Dust in S106: A Fragmented Environment
J. D. Adams, T. L. Herter, J. L. Hora +22
We present mid-IR (19 - 37 microns) imaging observations of S106 from SOFIA/FORCAST, complemented with IR observations from Spitzer/IRAC (3.6 - 8.0 microns), IRTF/MIRLIN (11.3 and…
New opacity measurement principle for LMJ-PETAL laser facility
M. Le Pennec, X. Ribeyre, J. -E. Ducret +1
Stellar seismology reveals some interior properties of thousands of solar-type stars but the solar seismic sound speed stays puzzling since a decade as it disagrees with the Standa…
ALMA observations of TiO around VY Canis Majoris
E. De Beck, W. Vlemmings, S. Muller +7
Titanium dioxide, TiO, is a refractory species that could play a crucial role in the dust-condensation sequence around oxygen-rich evolved stars. To date, gas phase TiO has…
Gaia FGK Benchmark Stars: Effective temperatures and surface gravities
U. Heiter, P. Jofré, B. Gustafsson +3
Large Galactic stellar surveys and new generations of stellar atmosphere models and spectral line formation computations need to be subjected to careful calibration and validation…
THOR - The HI, OH, Recombination Line Survey of the Milky Way - The pilot study: HI observations of the giant molecular cloud W43
S. Bihr, H. Beuther, J. Ott +30
To study the atomic, molecular and ionized emission of Giant Molecular Clouds (GMCs), we have initiated a Large Program with the VLA: 'THOR - The HI, OH, Recombination Line survey…
Chemistry in Protoplanetary Disks: the gas-phase CO/H2 ratio and the Carbon reservoir
L. Reboussin, V. Wakelam, S. Guilloteau +2
The gas mass of protoplanetary disks, and the gas-to-dust ratio, are two key elements driving the evolution of these disks and the formation of planetary system. We explore here to…
Resolving the stellar activity of the Mira AB binary with ALMA
W. H. T. Vlemmings, S. Ramstedt, E. O'Gorman +4
We present the size, shape and flux densities at millimeter continuum wavelengths, based on ALMA science verification observations in Band 3 (~94.6 GHz) and Band 6 (~228.7 GHz), fr…
Sensitive survey for 13CO, CN, H2CO, and SO in the disks of T Tauri and Herbig Ae stars II: Stars in Oph and upper Scorpius
L. Reboussin, S. Guilloteau, M. Simon +5
We attempt to determine the molecular composition of disks around young low-mass stars in the Oph region and to compare our results with a similar study performed in the Taurus…
First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
ALMA Partnership, C. L. Brogan, L. M. Perez +82
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations from the 2014 Long Baseline Campaign in dust continuum and spectral line emission from the HL Tau region…
Testing the chemical tagging technique with open clusters
S. Blanco-Cuaresma, C. Soubiran, U. Heiter +12
Context. Stars are born together from giant molecular clouds and, if we assume that the priors were chemically homogeneous and well-mixed, we expect them to share the same chemical…
Evidence for DCO+ as a probe of ionization in the warm disk surface
Cécile Favre, Edwin A. Bergin, L. Ilsedore Cleeves +3
In this Letter we model the chemistry of DCO in protoplanetary disks. We find that the overall distribution of the DCO abundance is qualitatively similar to that of CO…
Molecular ions in the O-rich evolved star OH231.8+4.2: HCO,HCO and first detection of SO, NH, and HO
C. Sánchez Contreras, L. Velilla Prieto, M. Agúndez +8
OH 231.8+4.2, a bipolar outflow around a Mira-type variable star, displays a unique molecular richness amongst circumstellar envelopes (CSEs) around O-rich AGB and post-AGB stars.…
ATLASGAL - Kinematic distances and the dense gas mass distribution of the inner Galaxy
M. Wienen, F. Wyrowski, K. M. Menten +8
The formation of high mass stars and clusters occurs in giant molecular clouds. Objects in evolved stages of massive star formation such as protostars, hot molecular cores, and ult…
First detection of CF+ towards a high-mass protostar
S. Fechtenbaum, S. Bontemps, N. Schneider +4
We report the first detection of the J = 1 - 0 (102.6 GHz) rotational lines of CF+ (fluoromethylidynium ion) towards CygX-N63, a young and massive protostar of the Cygnus X region.…