Results 21 to 30 of about 158,628 (345)

The peculiar dipping events in the disc-bearing young-stellar object EPIC 204278916 [PDF]

, 2016
EPIC 204278916 has been serendipitously discovered from its K2 light curve that displays irregular dimmings of up to 65 per cent for ≈25 consecutive days out of 78.8 d of observations.
S. Scaringi, C. Manara, S. Barenfeld, P. Groot, A. Isella, M. Kenworthy, C. Knigge, T. Maccarone, L. Ricci, M. A. Mpe, ESAEstec, Caltech, RU Nijmegen, Rice, Leiden, Soton, Ttu, Cfa, Hawaii   +18 more
semanticscholar   +1 more source

Accelerating a water maser face-on jet from a high mass young stellar object [PDF]

, 2015
We report on a long-term single-dish and VLBI monitoring for intermittent flare activities of a Dominant Blue-Shifted H$_{2}$O Maser (DBSM) associated with a southern high mass young stellar object, G353.273+0.641.
K. Motogi, K. Sorai, M. Honma, T. Hirota, K. Hachisuka, K. Niinuma, K. Sugiyama, Y. Yonekura, K. Fujisawa   +8 more
semanticscholar   +1 more source

SPECTROSCOPIC ASSESSMENT OF WISE-BASED YOUNG STELLAR OBJECT SELECTION NEAR λ AND σ ORIONIS [PDF]

, 2015
We have conducted a sensitive search down to the hydrogen burning limit for unextincted stars over ∼200 square degrees around Lambda Orionis and 20 square degrees around Sigma Orionis using the methodology of Koenig & Leisawitz.
X. Koenig, L. Hillenbrand, D. Padgett, D. DeFelippis   +3 more
semanticscholar   +1 more source

IRAS22150+6190: A POORLY STUDIED YOUNG STAR

Odessa Astronomical Publications, 2016
Many young stellar objects have been discovered in the course of the InfraRed Astronomical Satellite (IRAS) mission, which observed almost the entire sky in four photometric bands between 12 and 100 microns in 1989.
K. S. Kuratov, O. V. Zakhozhay, A. S. Miroshnichenko, V. A. Zakhozhay   +3 more
doaj   +1 more source

YOUNG STELLAR OBJECT VARIABILITY (YSOVAR): LONG TIMESCALE VARIATIONS IN THE MID-INFRARED [PDF]

, 2014
The YSOVAR (Young Stellar Object VARiability) Spitzer Space Telescope observing program obtained the first extensive mid-infrared (3.6 and 4.5 μm) time series photometry of the Orion Nebula Cluster plus smaller footprints in 11 other star-forming cores ...
L. Rebull, A. Cody, K. Covey, H. M. Günther, L. Hillenbrand, P. Plavchan, P. Plavchan, K. Poppenhaeger, J. Stauffer, S. Wolk, R. Gutermuth, M. Morales-Calderón, M. Morales-Calderón, I. Song, D. Barrado, Amelia Bayo, A. Bayo, D. James, J. Hora, F. Vrba, C. A. D. Oliveira, J. Bouvier, S. Carey, J. Carpenter, F. Favata, K. Flaherty, J. Forbrich, J. Forbrich, Jesús Hernández, M. McCaughrean, S. Megeath, G. Micela, Howard A. Smith, S. Terebey, N. Turner, Lori Allen, D. Ardila, H. Bouy, S. Guieu   +38 more
semanticscholar   +1 more source

Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way [PDF]

, 2007
In this Letter, we announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5).
Barentine, J. C., Beers, T. C., Begum, A., Belokurov, V., Bramich, D. M., Brewington, H., de Jong, J. T. A., Evans, N. W., Fellhauer, M., Gilmore, G., Harvanek, M., Hebb, L., Hewett, P. C., Hodgkin, S. T., Irwin, M. J., Kennicutt, Jr., R. C., Koposov, S., Krzesinski, J., Long, D., Nitta, A., Prema, P., Rix, H. -W., Ryan-Weber, E. V., Snedden, S. A., Vidrih, S., Wilkinson, M. I., Zucker, D. B.   +26 more
core   +2 more sources

Measuring the ionisation fraction in a jet from a massive protostar

Nature Communications, 2019
The ionisation fraction of protostellar jets is key to establish their true energetics. Here, the authors determine it in a jet from a high-mass young stellar object, using multi-wavelengths observations, confirming that the ionising mechanism giving ...
R. Fedriani, A. Caratti o Garatti, S. J. D. Purser, A. Sanna, J. C. Tan, R. Garcia-Lopez, T. P. Ray, D. Coffey, B. Stecklum, M. Hoare   +9 more
doaj   +1 more source

Origin of Interstellar Object A/2017 U1 in a Nearby Young Stellar Association? [PDF]

, 2017
We suggest that the kinematics and properties of interstellar object A/2017 U1 point towards its formation in a protoplanetary disk in the ~45 Myr-old Carina or Columba young stellar associations, and subsequent ejection with a low peculiar velocity (1-2
E. Gaidos, Jonathan P. Williams, A. Kraus   +2 more
semanticscholar   +1 more source

DYNAMICAL EVIDENCE FOR A MAGNETOCENTRIFUGAL WIND FROM A 20 M☉ BINARY YOUNG STELLAR OBJECT [PDF]

, 2013
In Orion BN/KL, proper motions of λ7 mm vibrationally excited SiO masers trace the rotation of a nearly edge-on disk and a bipolar wide-angle outflow 10–100 AU from radio source I, a binary young stellar object of ∼20 M☉.
L. Greenhill, C. Goddi, C. Chandler, L. Matthews, E. Humphreys   +4 more
semanticscholar   +1 more source

A CATALOG OF EXTENDED GREEN OBJECTS IN THE GLIMPSE SURVEY: A NEW SAMPLE OF MASSIVE YOUNG STELLAR OBJECT OUTFLOW CANDIDATES [PDF]

, 2008
Using images from the Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE), we have identified more than 300 extended 4.5 μm sources (Extended Green Objects (EGOs), for the common coding of the [4.5] band as green in three-color ...
C. Cyganowski, B. Whitney, E. Holden, Ella K. Braden, C. Brogan, E. Churchwell, R. Indebetouw, D. Watson, B. Babler, R. Benjamin, M. Gómez, M. Meade, M. Povich, T. Robitaille, C. Watson   +14 more
semanticscholar   +1 more source