225 citations · 1.4k across the 22 of their papers we have counts for
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Demographics of Transition Objects
Joan R. Najita, Stephen E. Strom, James Muzerolle
The unusual properties of transition objects (young stars with an optically thin inner disc surrounded by an optically thick outer disc) suggest that significant disc evolution has…
Rotational Velocities For B0-B3 Stars in 7 Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions
S. C. Wolff, S. E. Strom, D. Dror
We present the results of a study aimed at assessing the differences in the dis- tribution of rotation speeds, N (v sin i) among young (1-15 Myr) B stars spanning a range of masses…
The Formation and Evolution of Planetary Systems: Placing Our Solar System in Context with Spitzer
Michael R. Meyer, Lynne A. Hillenbrand, Dana Backman +32
We provide an overview of the Spitzer Legacy Program ``Formation and Evolution of Planetary Systems" (FEPS) which was proposed in 2000, begun in 2001, and executed aboard the Spitz…
Stellar Rotation: A Clue to the Origin of High Mass Stars?
S. C. Wolff, S. E. Strom, D. Dror +2
We present the results of a study aimed at assessing whether low and high mass stars form similarly. Our approach is (1) to examine the observed projected rotational velocities amo…
The Star Formation Histories of the Bulge and Disk of M31 from Gemini North+NIRI/Altair and HST/NICMOS
Knut A. G. Olsen, Robert D. Blum, Andrew W. Stephens +4
We discuss H and K observations of three fields in the bulge and disk of M31 obtained with the Altair adaptive optics system and NIRI instrument on Gemini North. These are the high…
Chandra X-Ray Observations of Young Clusters. III. NGC 2264 and the Orion Flanking Fields
L. M. Rebull, J. R. Stauffer, S. V. Ramirez +5
Chandra observations of solar-like pre-main sequence (PMS) stars in the Orion Flanking Fields (age ~1 Myr) and NGC 2264 (~3 Myr) are compared with the results of the COUP survey of…
Formation and Evolution of Planetary Systems: Cold Outer Disks Associated with Sun-like stars
Jinyoung Serena Kim, Dean C. Hines, Dana E. Backman +24
We present the discovery of debris systems around three solar mass stars based upon observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``t…
B Star Rotational Velocities in h and chi Persei: A Probe of Initial Conditions During the Star-Formation Process
Stephen E. Strom, Sidney C. Wolff, David Dror
Projected rotational velocities have been measured for 216 B0--B9 stars in the rich, dense h and chi Persei double cluster, and compared with the distribution of rotational velocit…
The Formation and Evolution of Planetary Systems: First Results from a Spitzer Legacy Science Program
M. R. Meyer, L. A. Hillenbrand, D. E. Backman +34
We present 3-160 micron photometry obtained with the IRAC and MIPS instruments for the first five targets from the Spitzer Legacy Science Program "Formation and Evolution of Planet…
Chandra X-ray observations of Young Clusters II. Orion Flanking Fields Data
Solange V. Ramirez, Luisa Rebull, John Stauffer +7
We present results of Chandra observations of two flanking fields (FF) in Orion, outside the Orion Nebula Cluster (ONC). The observations were taken with the ACIS-I camera with an…
Chandra X-ray observations of Young Clusters I. NGC2264 Data
Solange V. Ramirez, Luisa Rebull, John Stauffer +7
We present results of a Chandra observation of a field in NGC 2264. The observations were taken with the ACIS-I camera with an exposure time of 48.1 ks. We present a catalog of 263…
The Angular Momentum Evolution of 0.1-10 Msun Stars From the Birthline to the Main Sequence
S. C. Wolff, S. E. Strom, L. A. Hillenbrand
(Abridged) Projected rotational velocities (vsini) have been measured for a sample of 145 stars with masses between 0.4 and >10 Msun (median mass 2.1 Msun) located in the Orion sta…
The Early Angular Momentum History of Low Mass Stars: Evidence for a Regulation Mechanism
L. M. Rebull, S. C. Wolff, S. E. Strom +1
We examine the early angular momentum history of stars in young clusters via 197 photometric periods in fields flanking the Orion Nebula Cluster (ONC), 81 photometric periods in NG…
On the Relationship between Stellar Rotation and Radius in Young Clusters
L. M. Rebull, S. C. Wolff, S. E. Strom +1
We examine the early angular momentum history of stars in young clusters via 197 photometric periods in the Orion Flanking Fields, 83 photometric periods in NGC 2264, and 256 measu…
Evolution of Disk Accretion
Nuria Calvet, Lee Hartmann, Stephen E. Strom
We review the present knowledge of disk accretion in young low mass stars, and in particular, the mass accretion rate and its evolution with time. The methods used to obtain mass a…
A Multiwavelength Study of Star Formation in the L1495E Cloud in Taurus
Karen M. Strom, Stephen E. Strom
We have carried out a deep (t=30000s) x-ray search of the eastern portion of the L1495 cloud centered on the well known weak line T Tauri star (WTTS) V410 Tau using the ROSAT PSPC.…
Hubble Space Telescope Images of the Subarcsecond Jet in DG Tau
J. Kepner, P. Hartigan, C. Yang +1
We have applied a new restoration technique to archival [O~I], H, and continuum HST images of DG~Tau. The restored [O~I] and H images show that DG~Tau has a jet with a projec…
The Discovery of Two FU Orionis Objects in L1641
Karen M. Strom, Stephen E. Strom
We have obtained spectra of the reflection nebulosity illuminated by two heavily embedded IRAS sources in the L1641 molecular cloud, Re 50 and IC 430 (V883 Ori). Examination of the…