Results 1 to 10 of about 40,509 (299)

High-energy gamma-rays from stellar associations [PDF]

The Astrophysical Journal, 2003
It is proposed that TeV gamma-rays and neutrinos can be produced by cosmic rays (CRs) through hadronic interactions in the innermost parts of the winds of massive O and B stars.
Domingo-Santamaria, Eva, Romero, Gustavo E., Torres, Diego F.   +2 more
core   +4 more sources

Young stellar clusters and associations in M33 [PDF]

Astronomy and Astrophysics, 2010
We analyse multi-wavelength observations of 32 young star clusters and associations in M33 with known oxygen abundance (8 < 12 + log(O/H) < 8.7), using ultraviolet (UV), optical, mid-infrared (MIR), CO (1-0) and 21-cm line (HI) observations.
Abergel, Bastian, Bell, Boulesteix, Buckalew, C. Giovanardi, Calzetti, Cardelli, Carico, Castellanos, Cerviño, Cerviño, Cerviño, Chandar, Chandar, Corbelli, Courtes, Deul, Dodorico, Draine, E. Corbelli, Engargiola, Engelbracht, Fatuzzo, Fazio, Gil de Paz, González Delgado, Gordon, Gordon, Greenawalt, Habart, Harris, Heyer, Hoopes, Hoopes, Kennicutt, Kennicutt, L. Magrini, Larson, Leitherer, M. Grossi, Ma, Ma, Ma, Magrini, Magrini, Magrini, Martin, Massey, Massey, Massey, Mayall, Maíz-Apellániz, Meurer, Miller, Misselt, Morrissey, Oey, Oey, Oke, Park, Petersen, Pflamm-Altenburg, Reach, Reines, Relaño, Reynolds, Rosolowsky, Rosolowsky, Roussel, Salpeter, Schlegel, Searle, Thilker, Thilker, Verley, Verley, Verley, Viallefond, Vilchez, Voges, Weingartner, Wilson, Wood, Zepf   +84 more
core   +3 more sources

Lithium Depletion of Nearby Young Stellar Associations [PDF]

The Astrophysical Journal, 2008
We estimate cluster ages from lithium depletion in five pre-main-sequence groups found within 100 pc of the Sun: TW Hydrae Association, Eta Chamaeleontis Cluster, Beta Pictoris Moving Group, Tucanae-Horologium Association and AB Doradus Moving Group.
Brandeker, Alexis, Hauschildt, Peter H., Jayawardhana, Ray, Mentuch, Erin, van Kerkwijk, Marten H.   +4 more
core   +2 more sources

Addressing Systematics in the Traceback Age of the β Pictoris Moving Group

The Astrophysical Journal, 2023
We characterize the impact of several sources of systematic errors on the computation of the traceback age of the β Pictoris moving group ( β PMG). We find that uncorrected gravitational redshift and convective blueshift bias absolute radial velocity ...
Dominic Couture, Jonathan Gagné, René Doyon   +2 more
doaj   +1 more source

TESS Hunt for Young and Maturing Exoplanets (THYME). IX. A 27 Myr Extended Population of Lower Centaurus Crux with a Transiting Two-planet System

The Astronomical Journal, 2023
We report the discovery and characterization of a nearby (∼85 pc), older (27 ± 3 Myr), distributed stellar population near Lower Centaurus Crux (LCC), initially identified by searching for stars comoving with a candidate transiting planet from TESS (HD ...
Mackenna L. Wood, Andrew W. Mann, Madyson G. Barber, Jonathan L. Bush, Adam L. Kraus, Benjamin M. Tofflemire, Andrew Vanderburg, Elisabeth R. Newton, Gregory A. Feiden, George Zhou, Luke G. Bouma, Samuel N. Quinn, David J. Armstrong, Ares Osborn, Vardan Adibekyan, Elisa Delgado Mena, Sergio G. Sousa, Jonathan Gagné, Matthew J. Fields, Reilly P. Milburn, Pa Chia Thao, Stephen P. Schmidt, Crystal L. Gnilka, Steve B. Howell, Nicholas M. Law, Carl Ziegler, César Briceño, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Joshua E. Schlieder, Hugh P. Osborn, Joseph D. Twicken, David R. Ciardi, Chelsea X. Huang   +37 more
doaj   +1 more source

A Search for Stellar Siblings of the ∼200 Myr TOI-251 b Planetary System

The Astrophysical Journal, 2023
Young planets (
Qinghui Sun, Sharon Xuesong Wang, Andrew W. Mann, Benjamin M. Tofflemire, Adam L. Kraus, Tianjun Gan, Madyson G. Barber   +6 more
doaj   +1 more source

Spectrophotometry in Stellar Associations [PDF]

Symposium - International Astronomical Union, 1978
When analyzing the spectral energy distributions of early type stars as measured at Cerro Calán, we find that many of them have a feature which we have called ΔD (Gutiérrez-Moreno et al., 1968); the internal error of the measure of ΔD for a single star is ±0.02.
A. Gutiérrez-Moreno, H. Moreno
openaire   +1 more source

The Kinematics of the Young Stellar Population in the W5 Region of the Cassiopeia OB6 Association: Implication for the Formation Process of Stellar Associations

The Astronomical Journal, 2023
The star-forming region W5 is a major part of the Cassiopeia OB6 association. Its internal structure and kinematics may provide hints of the star formation process in this region.
Beomdu Lim, Jongsuk Hong, Jinhee Lee, Hyeong-Sik Yun, Narae Hwang, Byeong-Gon Park   +5 more
doaj   +1 more source

Kepler and the Behemoth: Three Mini-Neptunes in a 40 Million Year Old Association

The Astronomical Journal, 2022
Stellar positions and velocities from Gaia are yielding a new view of open cluster dispersal. Here we present an analysis of a group of stars spanning Cepheus ( l = 100°) to Hercules ( l = 40°), hereafter the Cep-Her complex.
L. G. Bouma, R. Kerr, J. L. Curtis, H. Isaacson, L. A. Hillenbrand, A. W. Howard, A. L. Kraus, A. Bieryla, D. W. Latham, E. A. Petigura, D. Huber   +10 more
doaj   +1 more source

The Oceanus Moving Group: A New 500 Myr Old Host for the Nearest Brown Dwarf

The Astrophysical Journal, 2023
We report the discovery of the Oceanus moving group, a ≈500 Myr old group with 50 members and candidate members at distances 2–50 pc from the Sun, using an unsupervised clustering analysis of nearby stars with Gaia DR3 data.
Jonathan Gagné, Leslie Moranta, Jacqueline K. Faherty, Rocio Kiman, Dominic Couture, Arnaud René Larochelle, Mark Popinchalk, Daniella Morrone   +7 more
doaj   +1 more source