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Related papers: The IACOB spectroscopic database of Northern Galac…

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We present the IACOB spectroscopic database, the largest homogeneous database of high-resolution, high signal-to-noise ratio spectra of Northern Galactic OB-type stars compiled up to date. The spectra were obtained with the FIES…

Solar and Stellar Astrophysics · Physics 2015-05-20 S. Simón-Díaz , M. Garcia , N. Castro , A. Herrero

The IACOB spectroscopic survey of Galactic OB stars is an ambitious observational project aimed at compiling a large, homogeneous, high-resolution database of optical spectra of massive stars observable from the Northern hemisphere. The…

Solar and Stellar Astrophysics · Physics 2011-09-14 S. Simón-Díaz , M. Garcia , A. Herrero , J. Maíz Apellániz , I. Negueruela

The IACOB project is an ambitious long-term project which is contributing to step forward in our knowledge about the physical properties and evolution of Galactic massive stars. The project aims at building a large database of…

The Galactic O-Star Spectroscopic Survey (GOSSS) is obtaining high quality R~2500 blue-violet spectroscopy of all Galactic stars ever classified as of O type with B < 12 and a significant fraction of those with B = 12-14. As of June 2013,…

We present a massive spectroscopic survey of Galactic O stars, GOSSS, based on new, high signal-to-noise ratio, R~2500 blue-violet digital observations from both hemispheres. The sample size and selection criteria; the relationship between…

Solar and Stellar Astrophysics · Physics 2010-10-29 J. Maíz Apellániz , A. Sota , N. R. Walborn , E. J. Alfaro , R. H. Barbá , N. I. Morrell , R. C. Gamen , J. I. Arias , M. Penadés Ordaz

The IACOB and OWN surveys are two ambitious complementary observational projects which have made available a large multi-epoch spectroscopic database of optical high resolution spectra of Galactic massive O-type stars. As a first step in…

We present the updates of the Galactic O-Star Catalog (GOSC) that we have undertaken in the last two years: new spectral types, more objects, additional information, and coordination with CDS. We also present updates for the Galactic O-Star…

Solar and Stellar Astrophysics · Physics 2016-10-12 J. Maíz Apellániz , Á. Alonso Moragón , L. Ortiz de Zárate Alcarazo

With the advent of large spectroscopic surveys, automated stellar parameter determination has become commonplace. Nevertheless, spectral classification still offers a quick and useful alternative for obtaining parameter estimates for large…

Solar and Stellar Astrophysics · Physics 2024-10-16 Ignacio Negueruela , Sergio Simón-Díaz , Abel de Burgos , Alba Casasbuenas , Paul G. Beck

We present the IACOB grid-based automatic tool for the quantitative spectroscopic analysis of O-stars. The tool consists of an extensive grid of FASTWIND models, and a variety of programs implemented in IDL to handle the observations,…

Solar and Stellar Astrophysics · Physics 2015-06-03 S. Simón-Díaz , N. Castro , A. Herrero , J. Puls , M. Garcia , C. Sabín-Sanjulián

The Galactic O star catalog (GOS) is an ambitious project to provide as much information regarding these types of objects as possible. The first version of the catalog (GOS v1) included data for 378 stars with precise spectral…

Astrophysics · Physics 2007-05-23 A. Sota , J. Maíz Apellániz , Nolan R. Walborn , R. Y. Shida

We are carrying out a bibliographic compilation of near-infrared (NIR)(0.7-5.0 um) spectroscopic studies available for stars in the Galactic O Star Catalog (GOSC, Ma\'iz Apell\'aniz et al. 2004). This compilation allows us to quantify the…

Astrophysics of Galaxies · Physics 2012-06-14 Simón Torres Robledo , Rodolfo Barbá , Julia Arias , Nidia Morrell

We have produced a catalog of 378 Galactic O stars with accurate spectral classifications which is complete for V<8 but includes many fainter stars. The catalog provides cross-identifications with other sources; coordinates (obtained in…

Astrophysics · Physics 2016-08-16 J. Maíz-Apellániz , N. R. Walborn , H. Á. Galué , L. H. Wei

We present first results from the quantitative spectroscopic analysis of 266 Galactic O-type stars targeted by the IACOB and OWN surveys (implying the largest sample of stars of this type analyzed homogeneously). We also evaluate what is…

Solar and Stellar Astrophysics · Physics 2016-11-09 G. Holgado , S. Simón-Díaz , R. H. Barbá

In this poster we present three developments related to the Galactic O-Star Spectroscopic Survey (GOSSS). First, we are making public the first version of MGB, an IDL code that allows the user to compare oberved spectra to a grid of…

[ABRIDGED] AIMS. MONOS is collecting information and studying O-type spectroscopic binaries with delta > -20 deg. In this 1st paper we describe the sample and provide spectral classifications and additional information for objects with…

An atlas of far-ultraviolet spectra of 45 Galactic OB stars observed with the Far Ultraviolet Spectroscopic Explorer is presented. The atlas covers the wavelength region between 912 and 1185A with an effective spectral resolution of 0.12A.…

We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ~ 2500 digital observations from both hemispheres selected from the Galactic O-Star…

Astrophysics of Galaxies · Physics 2014-03-05 A. Sota , J. Maíz Apellániz , N. I. Morrell , R. H. Barbá , N. R. Walborn , R. C. Gamen , J. I. Arias , E. J. Alfaro

The Gaia benchmark stars (GBS) are very bright stars of different late spectral types, luminosities and metallicities. They are well-known in the Galactic archaeology community because they are widely used to calibrate and validate the…

Solar and Stellar Astrophysics · Physics 2017-09-28 Paula Jofre , Ulrike Heiter , Sven Buder

We present the first installment of a massive spectroscopic survey of Galactic O stars, based on new, high signal-to-noise ratio, R~2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog of Ma\'iz…

Astrophysics of Galaxies · Physics 2015-05-27 A. Sota , J. Maíz Apellániz , N. R. Walborn , E. J. Alfaro , R. H. Barbá , N. I. Morrell , R. C. Gamen , J. I. Arias

Modern spectroscopic surveys combined with Gaia distances are enabling reliable estimates of fundamental parameters for hundreds of Galactic O-type stars and the full range of spectral types and luminosity classes. Here we provide updated,…

Solar and Stellar Astrophysics · Physics 2025-11-25 G. Holgado , S. Simón-Díaz , A. Herrero
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