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Related papers: A proper motion study of the Lupus clouds using VO…

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In order to understand the initial conditions and early evolution of star formation in a wide range of Galactic environments, we carried out an investigation of 64 \textit{Planck} Galactic Cold Clumps (PGCCs) in the second quadrant of the…

The Atacama Large Millimeter/submillimeter Array (ALMA) large program AGE-PRO explores protoplanetary disk evolution by studying gas and dust across various ages. This work focuses on ten evolved disks in Upper Scorpius, observed in dust…

We present results from a large spectroscopic survey of the nearest young association to the Sun, Upper Scorpius, conducted using 2dF/HERMES on the Anglo-Australian Telescope. We use spectroscopic youth criteria such as Li-equivalent widths…

Solar and Stellar Astrophysics · Physics 2025-10-15 Joseph J. Armstrong , Jonathan C. Tan , Nicholas J. Wright , R. D. Jeffries , Janez Kos , E. Fiorellino , Sven Buder , D. Barrios Lopez

Aims. We are searching for new open clusters or moving groups in the Solar neighbourhood. Methods. We used the Gaia-TGAS catalogue, cut it into narrow proper motion and parallax slices and searched for significant spatial over-densities of…

Solar and Stellar Astrophysics · Physics 2018-06-20 Siegfried Röser , Elena Schilbach , Bertrand Goldman , Thomas Henning , Attila Moor , Aliz Derekas

We report results of proper motions of 15 known Large Magellanic Cloud (LMC) old globular clusters (GCs) derived from the Gaia DR2 data sets. When these mean proper motions are gathered with existent radial velocity measurements to compose…

Astrophysics of Galaxies · Physics 2019-01-09 Andrés E. Piatti , Emilio J. Alfaro , Tristan Cantat-Gaudin

We present the results of a large-scale proper motion study of the central ~36'x16' of the Milky Way, based on our high angular resolution GALACTICNUCLEUS survey (epoch 2015) combined with the HST Paschen-alpha survey (epoch 2008). Our…

Deep R-band CCD linear polarimetry collected for fields with lines-of-sight toward the Lupus I molecular cloud is used to investigate the properties of the magnetic field within this molecular cloud. The observed sample contains about 7000…

Solar and Stellar Astrophysics · Physics 2015-05-01 G. A. P. Franco , F. O. Alves

Our understanding of the brown dwarf population in star forming regions is dependent on knowing distances and proper motions, and therefore will be improved through the Gaia space mission. In this paper, we select new samples of very low…

Solar and Stellar Astrophysics · Physics 2017-12-13 Neil J. Cook , Aleks Scholz , Ray Jayawardhana

We utilize ALMA archival data to estimate the dust disk size of 152 protoplanetary disks in Lupus (1-3 Myr), Chamaeleon I (2-3 Myr), and Upper-Sco (5-11 Myr). We combine our sample with 47 disks from Tau/Aur and Oph whose dust disk radii…

Earth and Planetary Astrophysics · Physics 2020-06-10 Nathanial Hendler , Ilaria Pascucci , Paola Pinilla , Marco Tazzari , John Carpenter , Renu Malhotra , Leonardo Testi

We have obtained millimeter wavelength photometry, high-resolution optical spectroscopy and adaptive optics near-infrared imaging for a sample of 26 Spitzer-selected transition circumstellar disks. All of our targets are located in the…

We have determined the proper motion (PM) of the Large Magellanic Cloud (LMC) relative to four background quasi-stellar objects, combining data from two previous studies made by our group, and new observations carried out in four epochs not…

Astrophysics · Physics 2008-11-26 Mario H. Pedreros , Edgardo Costa , Rene A. Mendez

We analyze 9 open clusters with ages in the range 70 Myr to 3.2 Gyr using UCAC2 proper motion data and 2MASS photometry. For each cluster we consider the projected velocity distributions in the core and off-core regions separately. In the…

Astrophysics · Physics 2009-11-10 E. Bica , C. Bonatto

The "Disk Substructures at High Angular Resolution Project" (DSHARP) has revealed an abundance and ubiquity of rings and gaps over a large sample of young planet-forming disks, which are hypothesised to be induced by the presence of forming…

Using data from the SCUBA Legacy Catalogue (850 um) and Spitzer Space Telescope (3.6 - 70 um), we explore dense cores in the Ophiuchus, Taurus, Perseus, Serpens, and Orion molecular clouds. We develop a new method to discriminate…

We investigate how planets interact with viscous accretion disks, in the limit that the disk is sufficiently low mass that the planet migrates more slowly than the disk material. In that case, the disk's surface density profile is…

Earth and Planetary Astrophysics · Physics 2020-03-18 Adam M. Dempsey , Wing-Kit Lee , Yoram Lithwick

A set of 41 nearby stars (closer than 25 pc) is investigated which have very wide binary and common proper motion (CPM) companions at projected separations between 1000 and $200 000$ AU. These companions are identified by astrometric…

Astrophysics · Physics 2009-11-13 V. V. Makarov , N. Zacharias , G. S. Hennessy

We aim at performing a kinematic census of young stellar objects (YSOs) in the Rho Ophiuchi F core and partially in the E core of the L1688 dark cloud. We run a proper motion program at the ESO New Technology Telescope (NTT) with the Son of…

We explore the kinematics of continuum clumps in the Perseus molecular cloud, derived from C18O J=3-2 data. Two populations are examined, identified using the automated algorithms CLFIND and GAUSSCLUMPS on existing SCUBA data. The clumps…

Astrophysics of Galaxies · Physics 2015-05-19 Emily I. Curtis , John S. Richer

We present the kinematics of a sample of 398 DA white dwarfs from the SPY project (ESO SN Ia Progenitor surveY) and discuss kinematic criteria for distinguishing thin-disk, thick-disk, and halo populations. This is the largest homogeneous…

Astrophysics · Physics 2009-11-11 E. -M. Pauli , R. Napiwotzki , U. Heber , M. Altmann , M. Odenkirchen

We present an improved data-reduction technique to obtain high-precision proper motions (PMs) of globular clusters using Hubble Space Telescope data. The new reduction is superior to the one presented in the first paper of this series for…

Solar and Stellar Astrophysics · Physics 2018-07-25 M. Libralato , A. Bellini , R. van der Marel , J. Anderson , L. L. Watkins , G. Piotto , F. R. Ferraro , D. Nardiello , E. Vesperini