Outputs (76)

A census of OB stars within 1 kpc and the star formation and core collapse supernova rates of the Milky Way (2025)
Journal Article
Quintana, A. L., Wright, N. J., & García, J. M. (in press). A census of OB stars within 1 kpc and the star formation and core collapse supernova rates of the Milky Way. Monthly Notices of the Royal Astronomical Society, 538(3), 1367–1383. https://doi.org/10.1093/mnras/staf083

OB stars are crucial for our understanding of Galactic structure, star formation, stellar feedback and multiplicity. In this paper we have compiled a census of all OB stars within 1 kpc of the Sun. We performed evolutionary and atmospheric model fits... Read More about A census of OB stars within 1 kpc and the star formation and core collapse supernova rates of the Milky Way.

Gaia DR3 reveals the complex dynamical evolution within star clusters (2024)
Journal Article
Viscasillas Vázquez, C., Magrini, L., Miret-Roig, N., Wright, N., Alves, J., Spina, L., Church, R., Tautvaišienė, G., & Randich, S. (2024). Gaia DR3 reveals the complex dynamical evolution within star clusters. Astronomy & Astrophysics, 689, https://doi.org/10.1051/0004-6361/202450573

Context. Star clusters, composed of stars born from the same molecular cloud, serve as invaluable natural laboratories for understanding the fundamental processes governing stellar formation and evolution.

Aims. This study aims to investigate corr... Read More about Gaia DR3 reveals the complex dynamical evolution within star clusters.

EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1 (2024)
Preprint / Working Paper
Anastasopoulou, K., Guarcello, M., Flaccomio, E., Sciortino, S., Benatti, S., De Becker, M., Wright, N., Drake, J., Albacete-Colombo, J., Andersen, M., Argiroffi, C., Bayo, A., Castellanos, R., Gennaro, M., Grebel, E., Miceli, M., Najarro, F., Negueruela, I., Prisinzano, L., Ritchie, B., …Zeidler, P. EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1

We present the most comprehensive and deepest X-ray study to date of the properties of the richest Wolf-Rayet (WR) population observed in a single stellar cluster, Westerlund 1 (Wd1). This work is based on 36 Chandra observations obtained from the "E... Read More about EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1.

The Gaia-ESO Survey: 3D dynamics of young groups and clusters from GES and Gaia EDR3 (2024)
Journal Article
Wright, N. J., Jeffries, R. D., Jackson, R. J., Sacco, G. G., Arnold, B., Franciosini, E., Gilmore, G., Gonneau, A., Morbidelli, L., Prisinzano, L., Randich, S., & Worley, C. C. (2024). The Gaia-ESO Survey: 3D dynamics of young groups and clusters from GES and Gaia EDR3. Monthly Notices of the Royal Astronomical Society, 533(1), 705–728. https://doi.org/10.1093/mnras/stae1806

We present the first large-scale 3D kinematic study of ∼2700 spectroscopically-confirmed young stars (< 20 Myr) in 18 star clusters and OB associations (hereafter groups) from the combination of Gaia astrometry and Gaia-ESO Survey spectroscopy... Read More about The Gaia-ESO Survey: 3D dynamics of young groups and clusters from GES and Gaia EDR3.

Kinematic substructure in star clusters constrains star cluster formation (2024)
Journal Article
Arnold, B., & Wright, N. J. (2024). Kinematic substructure in star clusters constrains star cluster formation. Monthly Notices of the Royal Astronomical Society, 531(1), 1191–1202. https://doi.org/10.1093/mnras/stae1236

The spatial-kinematic structure of 48 young star clusters and associations is investigated. Moran’s I statistic is used to quantify the degree of kinematic substructure in each region, and the results are compared to those expected assuming the hiera... Read More about Kinematic substructure in star clusters constrains star cluster formation.

Constraining Stellar Rotation at the Zero-age Main Sequence with TESS (2024)
Journal Article
Douglas, S. T., Cargile, P. A., Matt, S. P., Breimann, A. A., Pérez Chávez, J. A., Huang, C. X., Wright, N. J., & Zhou, G. (2024). Constraining Stellar Rotation at the Zero-age Main Sequence with TESS. Astrophysical Journal, 962(1), Article 16. https://doi.org/10.3847/1538-4357/ad0fe3

The zero-age main sequence (ZAMS) is a critical phase for stellar angular momentum evolution, as stars transition from contraction-dominated spin-up to magnetic wind-dominated spin-down. We present the first robust observational constraints on rotati... Read More about Constraining Stellar Rotation at the Zero-age Main Sequence with TESS.

EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey (2023)
Journal Article
Guarcello, M., Flaccomio, E., Albacete-Colombo, J., Almendros-Abad, V., Anastasopoulou, K., Andersen, M., Argiroffi, C., Bayo, A., Bartlett, E., Bastian, N., De Becker, M., Best, W., Bonito, R., Borghese, A., Calzetti, D., Castellanos, R., Cecchi-Pestellini, C., Clark, S., Clarke, C., Coti Zelati, F., …Zeidler, P. (2023). EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey. Astronomy & Astrophysics, 682, Article A49

Context. With a mass exceeding several 104 M and a rich and dense population of massive stars, supermassive young star clusters represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational... Read More about EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey.

The Statistical Uncertainties on X-Ray Flux and Spectral Parameters from Chandra ACIS-I Observations of Faint Sources: Application to the Cygnus OB2 Association (2023)
Journal Article
Albacete-Colombo, J. F., Flaccomio, E., Drake, J. J., Wright, N. J., Guarcello, M., & Kashyap, V. (2023). The Statistical Uncertainties on X-Ray Flux and Spectral Parameters from Chandra ACIS-I Observations of Faint Sources: Application to the Cygnus OB2 Association. Astrophysical Journal Supplement, 269(1), 11. https://doi.org/10.3847/1538-4365/acdd69

We investigate the uncertainties of fitted X-ray model parameters and fluxes for relatively faint Chandra ACIS-I source spectra. Monte Carlo (MC) simulations are employed to construct a large set of 150,000 fake X-ray spectra in the low photon count... Read More about The Statistical Uncertainties on X-Ray Flux and Spectral Parameters from Chandra ACIS-I Observations of Faint Sources: Application to the Cygnus OB2 Association.

Simulating the Sensitivity to Stellar Point Sources of Chandra X-Ray Observations (2023)
Journal Article
Wright, N. J., Drake, J. J., Guarcello, M. G., Kashyap, V. L., & Zezas, A. (2023). Simulating the Sensitivity to Stellar Point Sources of Chandra X-Ray Observations. Astrophysical Journal Supplement, 269(1), Article 8. https://doi.org/10.3847/1538-4365/acdd63

The Chandra Cygnus OB2 Legacy Survey is a wide and deep X-ray survey of the nearby and massive Cygnus OB2 association. The survey has detected ∼8000 X-ray sources, the majority of which are pre-main-sequence X-ray-emitting young stars in the associat... Read More about Simulating the Sensitivity to Stellar Point Sources of Chandra X-Ray Observations.

The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog (2023)
Journal Article
Wright, N. J., Drake, J. J., Guarcello, M. G., Aldcroft, T. L., Kashyap, V. L., Damiani, F., DePasquale, J., & Fruscione, A. (2023). The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog. Astrophysical Journal Supplement, 269(1), Article 7. https://doi.org/10.3847/1538-4365/acdd62

The Cygnus OB2 association is the largest concentration of young and massive stars within 2 kpc of the Sun, including an estimated ∼65 O-type stars and hundreds of OB stars. The Chandra Cygnus OB2 Legacy Survey is a large imaging program undertaken w... Read More about The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog.