Results 121 to 130 of about 126,365 (213)

OH/IR stars in the inner Galactic bulge

Astronomy & Astrophysics
Context. Stars on the asymptotic giant branch (AGB) play important roles in a number of astronomical contexts. To quantify these roles, it is necessary to establish the mass-loss characteristics of stars as they evolve up and beyond the AGB. Aims.
Olofsson H., Khouri T., Muller S., Unnikrishnan R., Groenewegen M. A. T., Blommaert J. A. D. L., De Beck E., Kastner J. H., Maercker M., Patel N., Ryde N., Sargent B. A., Srinivasan S., Vlemmings W. H. T.   +13 more
doaj   +1 more source

Globular clusters of the Galactic bulge

In this contribution we briefly summarize the recent development of the study of the globular clusters located in the Galactic Bulge, starting with our first CCD observations, in the late 80’s and early 90’s, of NGC 6553, NGC 6528, and Terzan 1.
Eduardo Bica, Sergio Ortolani, Beatriz Barbuy, Domenico Nardiello   +3 more
core   +1 more source

Einstein@Home Searches for Gamma-Ray Pulsars in the Inner Galaxy

The Astrophysical Journal
The Fermi Large Area Telescope (LAT) has revealed a mysterious extended excess of GeV gamma-ray emission around the Galactic Center (GC), which can potentially be explained by unresolved emission from a population of pulsars, particularly millisecond ...
C. J. Clark, M. Di Mauro, J. Wu, B. Allen, O. Behnke, H. B. Eggenstein, B. Machenschalk, L. Nieder, P. M. Saz Parkinson, A. Ashok, P. Bruel, B. McGloughlin, M. A. Papa, F. Camilo, M. Kerr, P. Voraganti Padmanabh, S. M. Ransom   +16 more
doaj   +1 more source

A Breakdown of the Black Hole–Bulge Mass Relation in Local Active Galaxies

The Astrophysical Journal
We investigate the relation between black hole (BH) mass and bulge stellar mass for a sample of 117 local ( z ∼ 0) galaxies hosting low-luminosity, broad-line active galactic nuclei (AGNs).
Megan R. Sturm, Amy E. Reines
doaj   +1 more source

Abundances in the Galactic Bulge

, 2006
International audienceA review is presented on abundance determinations in stars of the Galactic bulge, both in the field and in globular clusters. Previous low-resolution spectroscopy results are revised. Recent high resolution and high S/N spectroscopy
A. Alves-Brito, J. Meléndez, Alves-Brito, A., A. Renzini, A. Gomez, B. Barbuy, Ortolani, Sergio, D. Minniti, M. Zoccali, Melendez, J., Minniti, Dante, L. Pasquini, Y. Momany, Zoccali, M., E. Bica, V. Hill, Bica, E., Hill, Vanessa, Momany, Y., S. Ortolani, Pasquini, Luca, Renzini, Alvio, Gómez, Anita, Barbuy, Beatriz   +23 more
core   +1 more source

CAPOS: The bulge Cluster APOgee Survey

Astronomy & Astrophysics
Context. This study presents detailed elemental abundances in the intermediate-metallicity bulge globular cluster Djorg 2 based on high-resolution near-infrared spectra of six (R ~ 22 500) members obtained through the bulge Cluster APOgee Survey (CAPOS).
Pino-Zúñiga Thaiz, Villanova Sandro, Geisler Doug, Fernandez-Trincado José G., Muñoz Cesar, Barrera Nicolás, Sepúlveda-López Franco, Uribe Macarena   +7 more
doaj   +1 more source

Asymmetric eROSITA bubbles as the evidence of a circumgalactic medium wind. [PDF]

Nat Commun, 2023
Mou G, Sun D, Fang T, Wang W, Zhang R, Yuan F, Sofue Y, Wang T, He Z.   +8 more
europepmc   +1 more source

The Galactic Bulge: metallicity and perspective

, 2019
I will briefly review the history of bulge metallicity measurements from early studies to the present, including photometric constraints. I will consider the upper limit of iron metallicity in the bulge, how the field relates to chemically complex ...
Johnson, Christian (6471284), Shen, Juntai, Koch, Andreas, Rich, R. Michael (6471281), Koch, Andreas (6471287), Rich, R. Michael, Shen, Juntai (6471278), Johnson, Christian   +7 more
core   +1 more source

The Age of the Galactic Bulge

, 2001
9 pages, 2 figures, To appear in Astrophysical Ages and Timescales, ASP Conference Series, eds. T. von Hippel, N.
openaire   +2 more sources

Tracing Back a Second-generation Star Stripped from Terzan 5 by the Galactic Bar

The Astrophysical Journal Letters
The Galactic bulge hosts the Milky Way’s oldest stars, possibly coming from disrupted globular clusters (GCs) or the bulge’s primordial building blocks, making these stars witnesses to the Galaxy’s early chemical enrichment.
Stefano O. Souza, Marica Valentini, Cristina Chiappini, Angeles Pérez-Villegas, Josefina Montalbán, Diego Bossini, Beatriz Barbuy, Yvonne Elsworth, Rafael A. Garcia   +8 more
doaj   +1 more source