Explanipedia

Differences between Gaia DR2 and Gaia EDR3 photometry: demonstration, consequences, and applications Open

J. Maíz Apellániz, M. Weiler · 2024

We produce a new photometric calibration for the combined six-filter system formed by $Gaia$ DR2 + EDR3 $G$+$G_{\rm BP}$+$G_{\rm RP}$ using an improved STIS/HST spectrophotometric library with very red stars. The comparison between observe…

Can We Measure the Structural Dimension of Social Capital with Digital Footprint Data?—An Assessment of the Convergent Validity of an Indicator Extracted from Digital Footprint Data Open

M. Weiler, Nora Jansen, Oliver Hinz · 2024

Analysing spectral lines in Gaia low-resolution spectra Open

M. Weiler, J. M. Carrasco, C. Fabricius, C. Jordi · 2023

Context. With its third data release, European Space Agency’s Gaia mission has published the first set of low-resolution spectra for a large number of celestial objects. However, these spectra differ in their nature from typical spectrosco…

Analysing spectral lines in Gaia low-resolution spectra Open

M. Weiler, J. M. Carrasco, C. Fabricius, C. Jordi · 2022

With its third data release, European Space Agency's Gaia mission publishes for the first time low resolution spectra for a large number of celestial objects. These spectra however differ in their nature from typical spectroscopic data. Th…

GaiaData Release 3 Open

F. De Angeli, M. Weiler, P. Montegriffo, D. W. Evans, M. Riello , et al. · 2022

Context. Blue (BP) and Red (RP) Photometer low-resolution spectral data are one of the exciting new products in Gaia Data Release 3 ( Gaia DR3). These data have also been used to derive astrometry and integrated photometry in Gaia Early Da…

Gaia Data Release 3: Processing and validation of BP/RP low-resolution spectral data Open

F. De Angeli, M. Weiler, P. Montegriffo, D. W. Evans, M. Riello , et al. · 2022

(Abridged) Blue (BP) and Red (RP) Photometer low-resolution spectral data is one of the exciting new products in Gaia Data Release 3 (Gaia DR3). We calibrate about 65 billion individual transit spectra onto the same mean BP/RP instrument t…

Social Capital Accumulation through Social Media Networks: Evidence from a Randomized Field Experiment and Individual-Level Panel Data Open

M. Weiler, Simon Stolz, Andreas Lanz, Christian Schlereth, Oliver Hinz · 2022

Work-related social media networks (SMNs) like LinkedIn introduce novel networking opportunities and features that promise to help individuals establish, extend, and maintain social capital (SC). Typically, work-related SMNs offer access t…

Escape from the Bermuda cluster: Orphanization by multiple stellar ejections Open

J. Maíz Apellániz, M. Pantaleoni González, R. H. Barbá, M. Weiler · 2022

[Context] Dynamical interactions in young stellar clusters can eject massive stars early in their lives and significantly alter their mass functions. If all of the most massive stars are lost, we are left with an orphan cluster. [Aims] We …

The Gaia view on massive stars: EDR3 and what to expect from DR3 Open

J. Maíz Apellániz, R. H. Barbá, M. Pantaleoni González, M. Weiler, B. Cameron Reed , et al. · 2022

At the time of this meeting, the latest Gaia data release is EDR3, published on 3 December 2020, but the next one, DR3, will appear soon, on 13 June 2022. This contribution describes, on the one hand, Gaia EDR3 results on massive stars and…

Premiummitgliedschaften als Booster in Karrierenetzwerken? Open

M. Weiler, Simon Stolz, Andreas Lanz, Christian Schlereth, Oliver Hinz · 2022

Escape from the Bermuda cluster: Orphanization by multiple stellar ejections Open

J. Maíz Apellániz, M. Pantaleoni González, R. H. Barbá, M. Weiler · 2021

Context. Dynamical interactions in young stellar clusters can eject massive stars early in their lives and significantly alter their mass functions. If all of the most massive stars are lost, we are left with an orphan cluster. Aims. We st…

Internal calibration of Gaia BP/RP low-resolution spectra Open

J. M. Carrasco, M. Weiler, C. Jordi, C. Fabricius, F. De Angeli , et al. · 2021

Context. The full third Gaia data release will provide, for the first time, the calibrated spectra obtained with the blue and red Gaia slitless spectrophotometers (BP and RP, respectively). Gaia is a very complex mission and cannot be cons…

Gaia Early Data Release 3 -- Catalogue validation Open

C. Fabricius, X. Luri, F. Arenou, C. Babusiaux, A. Helmi , et al. · 2020

The third Gaia data release is published in two stages. The early part, Gaia EDR3, gives very precise astrometric and photometric properties for nearly two billion sources together with seven million radial velocities from Gaia DR2. The fu…

GaiaEarly Data Release 3 Open

C. Fabricius, X. Luri, F. Arenou, C. Babusiaux, A. Helmi , et al. · 2020

Context. The third Gaia data release is published in two stages. The early part, Gaia EDR3, gives very precise astrometric and photometric properties for nearly two billion sources together with seven million radial velocities from Gaia DR…

Gaia Early Data Release 3: Photometric content and validation Open

M. Riello, F. De Angeli, D. W. Evans, P. Montegriffo, J. M. Carrasco , et al. · 2020

Gaia Early Data Release 3 contains astrometry and photometry results for about 1.8 billion sources based on observations collected by the ESA Gaia satellite during the first 34 months of operations. This paper focuses on the photometric co…

GaiaEarly Data Release 3 Open

M. Riello, F. De Angeli, D. W. Evans, P. Montegriffo, J. M. Carrasco , et al. · 2020

Context. Gaia Early Data Release 3 ( Gaia EDR3) contains astrometry and photometry results for about 1.8 billion sources based on observations collected by the European Space Agency Gaia satellite during the first 34 months of its operatio…

Digitalization within the MME study program – teaching and assessment of communicative and interprofessional skills in the Heidelberg module via video conference together with a virtual OSCE course Open

Saskia V. Pante, M. Weiler, Bernhard Steinweg, Anne Herrmann‐Werner, Christian Brünahl , et al. · 2020

Background: Due to the corona pandemic, we conducted the Heidelberg module of the Master of Medical Education (MME) study program, which focuses on teaching and assessment of communicative and interpofessional skills, digitally for the fir…

The Gaia photometric calibration and results on Galactic runaways Open

J. Maíz Apellániz, M. Pantaleoni González, D. J. Lennon, R. H. Barbá, M. Weiler · 2018

We present results on two different Gaia-related topics. First, we describe our efforts to calibrate the three Gaia photometric passbands G, G_BP, and G_RP. We have built a new spectrophotometric HST/STIS library and used it to derive new …

Revised Gaia Data Release 2 passbands Open

M. Weiler · 2018

Context . The European Space Agency mission Gaia has published, with its second data release (DR2), a catalogue of photometric measurements for more than 1.3 billion astronomical objects in three passbands. The precision of the measurement…

Passband reconstruction from photometry Open

M. Weiler, C. Jordi, C. Fabricius, J. M. Carrasco · 2018

Context . Based on an initial expectation from laboratory measurements or instrument simulations, photometric passbands are usually subject to refinements. These refinements use photometric observations of astronomical sources with known s…

Social Capital Accumulation Through Social Media Networks and Its Benefits in a Project-Based Labor Market: Evidence From a Randomized Online Field Experiment Open

M. Weiler, Oliver Hinz · 2018

Semantic Word Clouds with Background Corpus Normalization and t-distributed Stochastic Neighbor Embedding Open

Erich Schubert, Andreas Spitz, M. Weiler, Johanna Geiß, Michael Gertz · 2017

Many word clouds provide no semantics to the word placement, but use a random layout optimized solely for aesthetic purposes. We propose a novel approach to model word significance and word affinity within a document, and in comparison to …

Gaia Data Release 1 (Corrigendum) Open

J. M. Carrasco, D. W. Evans, P. Montegriffo, C. Jordi, F. van Leeuwen , et al. · 2017

Corrigendum: Principles of the photometric calibration of the G band (Astronomy and Astrophysics (2016) 595 (A7) DOI: 10.1051/0004-6361/201629235) Open

JM Carrasco, D. W. Evans, P. Montegriffo, C. Jordi, F. van Leeuwen , et al. · 2017

This paper provides two corrections to the original paper that were due to typographical mistakes. These modifications do not affect the results included in the paper. In our study we used the correct equations and these typographical erro…

Gaia Data Release 1: Validation of the photometry Open

D. W. Evans, M. Riello, F. De Angeli, G. Busso, F. van Leeuwen , et al. · 2017

Aims. The photometric validation of the Gaia DR1 release of the ESA Gaia mission is described and the quality of the data shown. Methods. This is carried out via an internal analysis of the photometry using the most constant sources. Compa…

GaiaData Release 1 Open

D. W. Evans, M. Riello, F. De Angeli, G. Busso, F. van Leeuwen , et al. · 2017

Aims. The photometric validation of the Gaia DR1 release of the ESA Gaia mission is described and the quality of the data shown.

GaiaData Release 1 Open

F. van Leeuwen, D. W. Evans, F. De Angeli, C. Jordi, G. Busso , et al. · 2016

This paper presents an overview of the photometric data that are part of the first Gaia data release. Aims. The principles of the processing and the main characteristics of the Gaia photometric data are presented. Methods. The calibration …

Gaia data release 1, the photometric data Open

F. van Leeuwen, D. W. Evans, F. De Angeli, C. Jordi, G. Busso , et al. · 2016

Context. This paper presents an overview of the photometric data that are part of the first Gaia data release. Aims. The principles of the processing and the main characteristics of the Gaia photometric data are presented. Methods. The cal…

Gaia data release 1: Principles of the photometric calibration of the G band Open

J. M. Carrasco, D. W. Evans, P. Montegriffo, C. Jordi, F. van Leeuwen , et al. · 2016

Context. Gaia is an ESA cornerstone mission launched on 19 December 2013 aiming to obtain the most complete and precise 3D map of our Galaxy by observing more than one billion sources. This paper is part of a series of documents explaining…

GaiaData Release 1 Open

J. M. Carrasco, D. W. Evans, P. Montegriffo, C. Jordi, F. van Leeuwen , et al. · 2016

Context. Gaia is an ESA cornerstone mission launched on 19 December 2013 aiming to obtain the most complete and precise 3D map of our Galaxy by observing more than one billion sources. This paper is part of a series of documents explaining…

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