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相关论文: A Large Catalog of Accurate Distances to Local Mol…

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While Gaia has observed the phase space coordinates of over a billion stars in the Galaxy, in the overwhelming majority of cases it has only obtained five of the six coordinates, the missing dimension being the radial (line-of-sight)…

星系天体物理 · 物理学 2022-09-29 Aneesh Naik , Axel Widmark

We present a comparison of Gaia Data Release 1 (DR1) parallaxes with photometric parallaxes for a sample of 212 Galactic Cepheids at a median distance of 2~kpc, and explore their implications on the distance scale and the local value of the…

天体物理仪器与方法 · 物理学 2017-03-08 Stefano Casertano , Adam G. Riess , Beatrice Bucciarelli , Mario G. Lattanzi

The present work aims to build a new statistical distance scale for planetary nebulae (PNe) based on a rigorous calibration sample. The distances of the calibration sample are derived from the trigonometric parallax method using the recent…

太阳与恒星天体物理 · 物理学 2022-08-17 A. Ali , E. Algarni , A. Mindil , S. A. Alghamdi

We exploit a complete sample of 101\,810 {\it Gaia} DR2 giants, selected in Paper I in the space cylinder with a radius of 700 pc around the Sun and a height of $|Z|=1800$ pc, using the {\it Gaia} DR2 parallaxes, $G_\mathrm{BP}$ and…

星系天体物理 · 物理学 2020-11-30 George Gontcharov , Aleksandr Mosenkov

We present a method to infer reddenings and distances to stars, based only on their broad-band photometry, and show how this method can be used to produce a three-dimensional dust map of the Galaxy. Our method samples from the full…

Context. While Gaia enables to probe in great detail the extended local neighbourhood, the thin disk structure at larger distances remains sparsely explored. Aims. We aim here to build a non-parametric 3D model of the thin disc structures…

星系天体物理 · 物理学 2020-09-16 C. Babusiaux , C. Fourtune-Ravard , C. Hottier , F. Arenou , A. Gomez

The publication of the Gaia Data Release 2 (Gaia DR2) opens a new era in Astronomy. It includes precise astrometric data (positions, proper motions and parallaxes) for more than $1.3$ billion sources, mostly stars. To analyse such a vast…

星系天体物理 · 物理学 2018-10-17 A. Castro-Ginard , C. Jordi , X. Luri , F. Julbe , M. Morvan , L. Balaguer-Núñez , T. Cantat-Gaudin

Thanks to the recent wide-area photometric surveys, the number of star cluster candidates have risen exponentially in the last few years. Most detections, however, are based only on the presence of an overdensity of stars in a given region,…

Aims: This paper has two main objectives: (1) To determine the intrinsic properties of 16 faint and mostly unstudied open clusters in the poorly known sector of the Galaxy at 270$^\circ-$300$^\circ$, to probe the Milky Way structure in…

星系天体物理 · 物理学 2020-05-27 G. I. Perren , E. E. Giorgi , A. Moitinho , G. Carraro , M. S. Pera , R. A. Vázquez

We search for the fastest stars in the subset of stars with radial velocity measurements of the second data release (DR2) of the European Space Agency mission Gaia. Starting from the observed positions, parallaxes, proper motions, and…

星系天体物理 · 物理学 2018-09-26 T. Marchetti , E. M. Rossi , A. G. A. Brown

Context. Gaia Early Data Release 3 (EDR3), published in December 2020, features improved photometry and astrometry over that published in the previous DR2 file, and includes a substantially larger number of sources, of the order of 2,000…

星系天体物理 · 物理学 2021-12-14 I. González-Santamaría , M. Manteiga , A. Manchado , A. Ulla , C. Dafonte , P. López Varela

We present the second Gaia data release, Gaia DR2, consisting of astrometry, photometry, radial velocities, and information on astrophysical parameters and variability, for sources brighter than magnitude 21. In addition epoch astrometry…

Based on the accurate color excess $E_{\rm G_{BP},G_{RP}}$ of more than 4 million stars and $E_{\rm NUV,G_{BP}}$ of more than 1 million stars from \citet{2021ApJS..254...38S}, the distance and the extinction of the molecular clouds in the…

星系天体物理 · 物理学 2021-10-20 Mingxu Sun , Biwei Jiang , He Zhao , Yi Ren

We report on a first census of Galactic black hole X-ray binary (BHXRB) properties with the second data release (DR2) of {\em Gaia}, focusing on dynamically confirmed and strong candidate black hole transients. DR2 provides five-parameter…

高能天体物理现象 · 物理学 2019-03-20 Poshak Gandhi , Anjali Rao , Michael A. C. Johnson , John A. Paice , Thomas J. Maccarone

Spectrophotometric distances to stars observed by large spectroscopic surveys offer a crucial complement to parallax distances that remain very important also after the future Gaia data releases. Here we present a probabilistic approach to…

星系天体物理 · 物理学 2018-09-11 Johanna Coronado , Hans-Walter Rix , Wilma H. Trick

We present a new technique to infer dust locations towards reddened Type Ia supernovae and to help discriminate between an interstellar and a circumstellar origin for the observed extinction. Using Monte Carlo simulations, we show that the…

高能天体物理现象 · 物理学 2017-11-06 M. Bulla , A. Goobar , R. Amanullah , U. Feindt , R. Ferretti

The observation of our home galaxy, the Milky Way (MW), is made difficult by our internal viewpoint. The Gaia survey that contains around 1.6 billion star distances is the new flagship of MW structure and can be combined with other…

星系天体物理 · 物理学 2020-12-15 David Cornu

For application to surveys of interstellar matter and Galactic structure, we compute new spectrophotometric distances to 139 OB stars frequently used as background targets for UV spectroscopy. Many of these stars have updated spectral types…

太阳与恒星天体物理 · 物理学 2019-09-25 J. Michael Shull , Charles W. Danforth

We investigate the nature of nearby (10-15 kpc) high-speed stars in the Gaia DR2 archive identified on the basis of parallax, proper motion and radial velocity. Together with a consideration of their kinematic, orbital, and photometric…

星系天体物理 · 物理学 2018-11-28 Benjamin C. Bromley , Scott J. Kenyon , Warren R. Brown , Margaret J. Geller

The vast majority of Gaia DR1 Tycho-Gaia astrometric solution (TGAS) stars are located within a distance of 1200 pc from the Sun and up to 600 pc within the Galactic plane. Complete usage of their parallaxes is possible only if their…

星系天体物理 · 物理学 2017-07-31 George Gontcharov , Aleksandr Mosenkov