Results 11 to 20 of about 41,072 (339)

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
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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
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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
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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
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PHANGS–JWST First Results: The Influence of Stellar Clusters on Polycyclic Aromatic Hydrocarbons in Nearby Galaxies

The Astrophysical Journal Letters, 2023
We present a comparison of theoretical predictions of dust continuum and polycyclic aromatic hydrocarbon (PAH) emission with new JWST observations in three nearby galaxies: NGC 628, NGC 1365, and NGC 7496.
Daniel A. Dale, Médéric Boquien, Ashley T. Barnes, Francesco Belfiore, Frank Bigiel, Yixian Cao, Rupali Chandar, Jérémy Chastenet, Mélanie Chevance, Sinan Deger, Oleg V. Egorov, Kathryn Grasha, Brent Groves, Hamid Hassani, Kiana F. Henny, Ralf S. Klessen, Kathryn Kreckel, J. M. Diederik Kruijssen, Kirsten L. Larson, Janice C. Lee, Adam K. Leroy, Daizhong Liu, Eric J. Murphy, Erik Rosolowsky, Karin Sandstrom, Eva Schinnerer, Jessica Sutter, David A. Thilker, Elizabeth J. Watkins, Bradley C. Whitmore, Thomas G. Williams   +30 more
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New Stellar Associations in M31 [PDF]

Symposium - International Astronomical Union, 1986
About twenty years ago van den Bergh (1964) recognized 188 OB associations in the Andromeda Nebula. He used plates taken by the 52-inches Tautenburgh Schmidt telescope in GDR. Later on Richter (1971) added 7 new associations in the south-western periphery of M31. Now we have the opportunity to continue the search of stellar associations in M31 with the
Yu. N. Efremov, G. R. Ivanov, N. S. Nikolov   +2 more
openaire   +1 more source

SPYGLASS. IV. New Stellar Survey of Recent Star Formation within 1 kpc

The Astrophysical Journal, 2023
Young stellar populations provide a powerful record that traces millions of years of star formation history in the solar neighborhood. Using a revised form of the SPYGLASS young star identification methodology, we produce an expanded census of nearby ...
Ronan Kerr, Adam L. Kraus, Aaron C. Rizzuto   +2 more
doaj   +1 more source