X-Ray Superflares from Pre-main-sequence Stars: Flare Modeling [PDF]
Astrophysical Journal, 2021 Getman et al. report the discovery, energetics, frequencies, and effects on environs of >1000 X-ray superflares with X-ray energies E X ∼ 1034–1038 erg from pre-main-sequence (PMS) stars identified in the Chandra MYStIX and SFiNCs surveys.
K. Getman, E. Feigelson, G. Garmire
semanticscholar +1 more source
Characterizing the X-Ray Emission of Intermediate-mass Pre-main-sequence Stars [PDF]
Astronomical Journal, 2021 We use X-ray and infrared observations to study the properties of three classes of young stars in the Carina Nebula: intermediate-mass (2–5 M ⊙) pre-main-sequence stars (IMPS; i.e., intermediate-mass T Tauri stars), late-B and A stars on the zero-age ...
E. H. Nunez +4 more
semanticscholar +1 more source
Identification of emission-line stars in transition phase from pre-main sequence to main sequence [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Pre-main-sequence (PMS) stars evolve into main-sequence (MS) phase over a period of time. Interestingly, we found a scarcity of studies in existing literature that examine and attempt to better understand the stars in PMS to MS transition phase.
Sumana Bhattacharyya +5 more
semanticscholar +1 more source
The IGRINS YSO Survey. I. Stellar Parameters of Pre-main-sequence Stars in Taurus-Auriga [PDF]
Astrophysical Journal, 2021 We present fundamental parameters for 110 canonical K- and M-type (1.3−0.13 M ⊙) Taurus-Auriga young stellar objects (YSOs). The analysis produces a simultaneous determination of effective temperature (T eff), surface gravity (log g), magnetic-field ...
R. López-Valdivia +21 more
semanticscholar +1 more source
Pre-main sequence stars in LH 91
Astronomy & Astrophysics, 2022 Aims. We study the accretion properties of pre-main sequence (PMS) low-mass stars in the LH 91 association within the Large Magellanic Clouds. Methods. Using optical multiband photometry obtained with the Hubble Space Telescope, we identify 75 candidates showing Hα excess emission above the 3σ level with equivalent width EWHα ⩾ 10 Å.
R. Carini +5 more
openaire +2 more sources
Untangling the Galaxy. III. Photometric Search for Pre-main-sequence Stars with Deep Learning [PDF]
Astronomical Journal, 2020 A reliable census of pre-main-sequence stars with known ages is critical to our understanding of early stellar evolution, but historically there has been difficulty in separating such stars from the field.
Aidan McBride +4 more
semanticscholar +1 more source
INTRINSIC COLORS, TEMPERATURES, AND BOLOMETRIC CORRECTIONS OF PRE-MAIN-SEQUENCE STARS [PDF]
, 2013 We present an analysis of the intrinsic colors and temperatures of 5–30 Myr old pre-main-sequence (pre-MS) stars using the F0- through M9-type members of nearby, negligibly reddened groups: the η Cha cluster, the TW Hydra Association, the β Pic Moving ...
M. Pecaut, E. Mamajek
semanticscholar +1 more source
Masses and Implications for Ages of Low-mass Pre-main-sequence Stars in Taurus and Ophiuchus [PDF]
Astrophysical Journal, 2019 The accuracy of masses of pre-main-sequence stars derived from their locations on the Hertzsprung–Russell diagram (HRD) can be tested by comparison with accurate and precise masses determined independently.
M. Simon +10 more
semanticscholar +1 more source
Dynamical Stellar Masses of Pre-main-sequence Stars in Lupus and Taurus Obtained with ALMA Surveys in Comparison with Stellar Evolutionary Models [PDF]
, 2020 We analyzed archival molecular line data of pre-main-sequence (PMS) stars in the Lupus and Taurus star-forming regions obtained with ALMA surveys with an integration time of a few minutes per source. We stacked the data of 13CO and C18O (J = 2–1 and 3–2)
T. Braun +5 more
semanticscholar +1 more source
Rotation and Activity of Pre–Main‐Sequence Stars [PDF]
The Astrophysical Journal, 2007 40 pages, 8 figures, ApJ, in ...
Scholz, Alexander +3 more
openaire +2 more sources