Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Luhman, Kevin"'
We present ALMA Band 7 continuum (340 GHz) and CO J=3-2 observations for an extended sample of disks in the Upper Scorpius OB Association (Upper Sco, age ~ 10 Myr). The targets were selected from previous studies that identified new members of Upper
Externí odkaz:
http://arxiv.org/abs/2410.21598
Upon its discovery in 2006, the young L7.5 companion to the solar analog HD 203030 was found to be approximate to 200 K cooler than older late-L dwarfs, which is quite unusual. HD. 203030B offered the first clear indication that the effective tempera
Externí odkaz:
http://hdl.handle.net/10150/627091
http://arizona.openrepository.com/arizona/handle/10150/627091
http://arizona.openrepository.com/arizona/handle/10150/627091
Autor:
Esplin, Taran, Luhman, Kevin
We have performed a census of the young stellar populations near the Corona Australis molecular cloud using photometric and kinematic data from several sources, particularly Gaia EDR3, and spectroscopy of hundreds of candidate members. We have compil
Externí odkaz:
http://arxiv.org/abs/2111.14903
Autor:
Luhman, Kevin Lee, 1971
I have used optical and near-infrared spectroscopy and imaging to measure spectral types and luminosities for young (τ < 10 Myr), embedded (Aᵥ = 0-50), low-mass (0.1-1 M(⊙)) stars in three nearby (d < 300 pc) clusters: L1495E, IC 348, and ρ Oph
Externí odkaz:
http://hdl.handle.net/10150/288884
Autor:
Moolekamp, Fred E., Mamajek, Eric E., James, David J., Luhman, Kevin L., Pecaut, Mark J., Metchev, Stanmir A., Bell, Cameron P. M., Denbo, Sara R.
Using images taken with the Dark Energy Camera (DECam), the first extensive survey of low mass and substellar objects is made in the 15-20 Myr Upper Centaurus Lupus (UCL) and Lower Centaurus Crux (LCC) subgroups of the Scorpius Centaurus OB Associati
Externí odkaz:
http://arxiv.org/abs/1802.00878
Autor:
Esplin, Taran, Luhman, Kevin
Publikováno v:
The Astronomical Journal, Volume 154, Number 4, 2017
We present the initial results from a survey for planetary-mass brown dwarfs in the Taurus star-forming region. We have identified brown dwarf candidates in Taurus using proper motions and photometry from several ground- and space-based facilities. T
Externí odkaz:
http://arxiv.org/abs/1709.02017
Autor:
Esplin, Taran, Luhman, Kevin, Cushing, Michael, Hardegree-Ullman, Kevin, Trucks, Jessica, Burgasser, Adam, Schneider, Adam
Because WISE J085510.83$-$071442.5 (hereafter WISE 0855-0714) is the coldest known brown dwarf ($\sim250$ K) and one of the Sun's closest neighbors (2.2 pc), it offers a unique opportunity for studying a planet-like atmosphere in an unexplored regime
Externí odkaz:
http://arxiv.org/abs/1609.05850
Autor:
Kuhn, Michael A., Feigelson, Eric D., Getman, Konstantin V., Baddeley, Adrian J., Broos, Patrick S., Sills, Alison, Bate, Matthew R., Povich, Matthew S., Luhman, Kevin L., Busk, Heather A., Naylor, Tim, King, Robert R.
The clusters of young stars in massive star-forming regions show a wide range of sizes, morphologies, and numbers of stars. Their highly subclustered structures are revealed by the MYStIX project's sample of 31,754 young stars in nearby sites of star
Externí odkaz:
http://arxiv.org/abs/1403.4252
Autor:
Getman, Konstantin V., Feigelson, Eric D., Kuhn, Michael A., Broos, Patrick S., Townsley, Leisa K., Naylor, Tim, Povich, Matthew S., Luhman, Kevin L., Garmire, Gordon P.
A major impediment to understanding star formation in massive star forming regions (MSFRs) is the absence of a reliable stellar chronometer to unravel their complex star formation histories. We present a new estimation of stellar ages using a new met
Externí odkaz:
http://arxiv.org/abs/1403.2741
Autor:
Feigelson, Eric D., Townsley, Leisa K., Broos, Patrick S., Busk, Heather A., Getman, Konstantin V., King, Robert, Kuhn, Michael A., Naylor, Tim, Povich, Matthew, Baddeley, Adrian, Bate, Matthew, Indebetouw, Remy, Luhman, Kevin, McCaughrean, Mark, Pittard, Julian, Pudritz, Ralph, Sills, Alison, Song, Yong, Wadsley, James
MYStIX (Massive Young Star-Forming Complex Study in Infrared and Xray) seeks to characterize 20 OB-dominated young clusters and their environs at distances d < 4 kpc using imaging detectors on the Chandra X-ray Observatory, Spitzer Space Telescope, a
Externí odkaz:
http://arxiv.org/abs/1309.4483