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The introduction of infrared arrays for lunar occultations (LO) work and the improvement of predictions based on new deep IR catalogues have resulted in a large increase in the number of observable occultations. We provide the means for an…

Astrophysics · Physics 2014-11-18 O. Fors , A. Richichi , X. Otazu , J. Nunez

Re-derivation of the sensitivities of all of the Space Telescope Imaging Spectrograph (STIS) observing modes were required after major updates were introduced to the model atmospheres of the three primary standard stars. The new predicted…

Instrumentation and Methods for Astrophysics · Physics 2026-02-17 Amy M. Jones , Svea Hernandez , Joleen K. Carlberg , Daniel Welty

Long-term spectroscopic monitoring campaigns on active galactic nuclei (AGNs) provide a wealth of information about its interior structure and kinematics. However, a number of the observations suffer from the contamination of second-order…

Astrophysics of Galaxies · Physics 2024-01-23 Wen-Zhe Xi , Kai-Xing Lu , Hai-Cheng Feng , Sha-Sha Li , Jin-Ming Bai , Rui-Lei Zhou , Hong-Tao Liu , Jian-Guo Wang

The KPNO International Spectroscopic Survey (KISS) is an objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless spectroscopic surveys with the advantages of modern CCD…

Several approaches exist to model gravitational lens systems. In this study, we apply global optimization methods to find the optimal set of lens parameters using a genetic algorithm. We treat the full optimization procedure as a two-step…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Adam Rogers , Jason D. Fiege

(Abridged) We present the Survey for High-z Absorption Red and Dead Sources (SHARDS), an ESO/GTC Large Program carried out with GTC/OSIRIS. SHARDS is an ultra-deep optical spectro-photometric survey of the GOODS-N field (130 arcmin^2) at…

We present GOSSIP (Galaxy Observed-Simulated SED Interactive Program), a new tool developed to perform SED fitting in a simple, user friendly and efficient way. GOSSIP automatically builds-up the observed SED of an object (or a large sample…

Astrophysics · Physics 2008-01-17 P. Franzetti , M. Scodeggio , B. Garilli , M. Fumana , L. Paioro

The Legacy Survey of Space and Time, operated by the Vera C. Rubin Observatory, is a 10-year astronomical survey due to start operations in 2022 that will image half the sky every three nights. LSST will produce ~20TB of raw data per night…

Instrumentation and Methods for Astrophysics · Physics 2020-11-13 Dino Bektesevic , Hsin-Fang Chiang , Kian-Tat Lim , Todd L. Miller , Greg Thain , Tim Jenness , James Bosch , Andrei Salnikov , Andrew Connolly

We present the results of an all-sky survey made with the Fine Guidance Sensor on Hubble Space Telescope to search for angularly resolved binary systems among the massive stars. The sample of 224 stars is comprised mainly of Galactic O- and…

Strong gravitational lensing gives access to the total mass distribution of galaxies. It can unveil a great deal of information about the lenses dark matter content when combined with the study of the lenses light profile. However,…

Astrophysics of Galaxies · Physics 2017-08-02 Judith Biernaux , Pierre Magain , Clementine Hauret

We present PyWiFeS, a new Python-based data reduction pipeline for the Wide Field Spectrograph (WiFeS). PyWiFeS consists of a series of core data processing routines built on standard scientific Python packages commonly used in astronomical…

Instrumentation and Methods for Astrophysics · Physics 2013-11-13 Michael J. Childress , Frédéric P. A. Vogt , Jon Nielsen , Robert G. Sharp

We present here the VO access to the results of an analysis of the spectra of Sloan Digital Sky Survey (SDSS) galaxies performed with the STARLIGHT code by Cid Fernandes et al. (2005). The results include for each galaxy the original SDSS…

We introduce a novel galaxy classification methodology based on the visible spectra of a sample of over 68,000 nearby ($z\leq 0.1$) Sloan Digital Sky Survey lenticular (S0) galaxies. Unlike traditional diagnostic diagrams, which rely on a…

Astrophysics of Galaxies · Physics 2025-01-10 J. L. Tous , J. M. Solanes , J. D. Perea

Sky-coverage in laser-assisted AO observations largely depends on the system's capability to guide on the faintest natural guide-stars possible. Here we give an up-to-date status of our natural guide-star processing tailored to the…

Instrumentation and Methods for Astrophysics · Physics 2016-11-23 Carlos M. Correia , Benoit Neichel , Jean-Marc Conan , Cyril Petit , Jean-Francois Sauvage , Thierry Fusco , Joel D. R. Vernet , Niranjan Thatte

We have adapted the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) Science Pipelines to process data from the Gravitational-Wave Optical Transient Observer (GOTO) prototype. In this paper, we describe how we used the Rubin…

The knowledge of atmospheric parameters -- such as temperature, pressure, and humidity -- is very important for a proper reconstruction of air showers, especially with the fluorescence technique. The Global Data Assimilation System (GDAS)…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Martin Will

A suite of spectroscopic surveys is producing vast sets of stellar spectra with the goal of advancing stellar physics and Galactic evolution by determining their basic physical properties. A substantial fraction of these stars are in binary…

Solar and Stellar Astrophysics · Physics 2024-06-03 Rhys Seeburger , Hans-Walter Rix , Kareem El-Badry , Maosheng Xiang , Morgan Fouesneau

We present the first automated fitting method for the quantitative spectroscopy of O- and early B-type stars with stellar winds. The method combines the non-LTE stellar atmosphere code FASTWIND from Puls et al. (2005) with the genetic…

Astrophysics · Physics 2009-11-11 M. R. Mokiem , A. de Koter , J. Puls , A. Herrero , F. Najarro , M. R. Villamariz

The GALANTE optical photometric survey is observing the northern Galactic plane and some adjacent regions using seven narrow- and intermediate-filters, covering a total of 1618 square degrees. The survey has been designed with multiple…

We present an improved version of FIT3D, a fitting tool for the analysis of the spectroscopic properties of the stellar populations and the ionized gas derived from moderate resolution spectra of galaxies. FIT3D is a tool developed to…

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