Science Archives Publication System

Study of the Binary Star ADS 7251 by Observations on the 65-cm Refractor at Pulkovo from 1962-2018

DOI: 10.1007/s10511-020-09655-y Bibcode: 2020Ap.....63..511S

Romanenko, L. G.; Izmailov, I. S.; Shakht, N. A. +1 more

Results are presented from a study of the binary star ADS 7251 (STF 1321) based on a uniform series of observations on the 65-cm refractor at Pulkovo from 1962 through 2018. The errors in the yearly average positions ρ and θ are equal to 0''.004 and 0°.02 for the photographic and 0."003 and 0.°01 for the CCD observations. A new orbit is calculated…

2020 • Astrophysics

Hipparcos 0

Absolute Dimensions of the Unevolved F-type Eclipsing Binary BT Vulpeculae

DOI: 10.3847/1538-4357/ab85c6 Bibcode: 2020ApJ...894...96T

Torres, Guillermo; Fekel, Francis C.; Muterspaugh, Matthew W. +1 more

We report extensive differential V-band photometry and high-resolution spectroscopy for the 1.14 day, detached, double-lined eclipsing binary BT Vul (F0+F7). Our radial-velocity monitoring and light-curve analysis lead to absolute masses and radii of ${M}_{1}=1.5439\pm 0.0098\,{{ \mathcal M }}_{\odot }^{{\rm{N}}}$ and ${R}_{1}=1.536\pm 0.018\,{{ \…

2020 • The Astrophysical Journal

Gaia 0

Seven New Eclipsing Binaries

DOI: 10.24411/2221-0474-2020-10017 Bibcode: 2020PZP....20....4K

Khruslov, A. V.; Kusakin, A. V.; Reva, I.

2020 • Peremennye Zvezdy Prilozhenie

Gaia 0

Conceptual Remote Distance Measurement with a Double-Slit Interference

DOI: 10.1142/S2251171720500105 Bibcode: 2020JAI.....950010Z

Zou, Yuan-Chuan

Distance measurement is crucial to astronomy. Here, we suggest a new conceptual method to measure the distance by using a local instrument. By engaging the double-slit interference and by considering the phase information of the light, the position of the intensity maximum is related to the distance of the source. Consequently, the precise measure…

2020 • Journal of Astronomical Instrumentation

Gaia 0

Assessing membership projection errors in star forming regions

DOI: 10.1051/0004-6361/202039118 Bibcode: 2020A&A...644A.141R

Cambrésy, L.; Boily, C. M.; Roland, T.

Context. Young stellar clusters harbour complex spatial structures emerging from the star formation process. Identifying stellar over-densities is a key step in better constraining how these structures are formed. The high accuracy of distances derived from Gaia DR2 parallaxes still do not allow us to locate individual stars within clusters of ≈1 …

2020 • Astronomy and Astrophysics

Gaia 0

Editor's note

DOI: 10.1002/asna.202023762 Bibcode: 2020AN....341..142S

Schartel, Norbert

2020 • Astronomische Nachrichten

XMM-Newton 0

Erratum: XMM-Newton large program on SN1006 - I. Methods and initial results of spatially resolved spectroscopy

DOI: 10.1093/mnras/staa2995 Bibcode: 2020MNRAS.499.5679L

Vink, Jacco; Miceli, Marco; Bocchino, Fabrizio +2 more

2020 • Monthly Notices of the Royal Astronomical Society

XMM-Newton 0

The Bright Eclipsing Binary NSV 4031 is not variable

DOI: 10.5817/OEJV2020-0207 Bibcode: 2020OEJV..207....1L

Lloyd, C.; Walker, E. N.; Conner, D. +1 more

Observations of the supposed eclipsing binary NSV 4031 from time-series photometry and data from several synoptic instruments show no evidence of an eclipse or any periodic variation with an amplitude above 0.05 magnitudes. The spectral energy distribution of the star is very closely matched to a spectral type of F5IV.

2020 • Open European Journal on Variable Stars

Gaia 0

Multiple Sun-Angle Aided Crater Morpho-Dynamics and Variation of Lommel Seeliger Corrected Radiance Factor with Respect to Phase Angles Using Terrain Mapping Camera Onboard Chandrayaan-1 and 2

Bibcode: 2020LPI....51.1383A

Gupta, S.; Suresh, K.; Naik, S. S. +9 more

Low and high sun elevation images of TMC 2&1 (Chandryaan-2&1) used for ejecta characteristics, impact dynamics, and radiance factor as function of phase angles.

2020 • 51st Annual Lunar and Planetary Science Conference

Chandrayaan-1 0

On the origin of stellar associations The impact of Gaia DR2

Bibcode: 2020BAAA...61C..11C

Carraro, G.

In this review I discuss different theories of the formation of OB associations in the Milky Way, and provide the observational evidences in support of them. In fact, the second release of Gaia astrometric data (April 2018) is revolutionising the field, because it allows us to unravel the 3D structure and kinematics of stellar associations with un…

2020 • Boletin de la Asociacion Argentina de Astronomia La Plata Argentina

Gaia 0