Results 91 to 100 of about 267,615 (357)

Dense gas and star formation in the outer Milky Way

Astronomy & Astrophysics, 2023
We present maps and spectra of the HCN(1−0) and HCO+(1−0) lines in the extreme outer Galaxy, at galactocentric radii between 14 and 22 kpc, with the 13.7 m Delingha telescope. The nine molecular clouds were selected from a CO/13CO survey of the outer quadrants.
Braine, J., Sun, Y., Shimajiri, Y., Van Der Tak, F. F. S., Fang, M., André, Ph, Chen, H., Gao, Y.   +7 more
openaire   +3 more sources

High-resolution Chemical Abundances of the Nyx Stream

The Astrophysical Journal, 2023
Nyx is a nearby, prograde, and high-eccentricity stellar stream physically contained in the thick disk, but its origin is unknown. Nyx could be the remnant of a disrupted dwarf galaxy, in which case the associated dark matter substructure could affect ...
Shuyu Wang, Lina Necib, Alexander P. Ji, Xiaowei Ou, Mariangela Lisanti, Mithi A. C. de los Reyes, Allison L. Strom, Mimi Truong   +7 more
doaj   +1 more source

Predicting the locations of possible long-lived low-mass first stars: Importance of satellite dwarf galaxies

, 2017
The search for metal-free stars has so far been unsuccessful, proving that if there are surviving stars from the first generation, they are rare, they have been polluted, or we have been looking in the wrong place.
Agarwal, Bhaskar, Frebel, Anna, Glover, Simon C. O., Griffen, Brendan F., Hartwig, Tilman, Klessen, Ralf S., Magg, Mattis   +6 more
core   +2 more sources

The Milky Way Nuclear Star Cluster [PDF]

, 2011
In the center of the Milky Way, as well as in many other galaxies, a compact star cluster around a very massive black hole is observed. One of the possible explanations for the formation of such Nuclear Star Clusters is based on the 'merging' of globular
A. Sternberg, Agarwal, Alexander, Alexander, Allen, Aparicio, Bartko, Bartko, Bertelli, Blum, Bonnet, Carr, Cunha, Do, Eisenhauer, F. Eisenhauer, Ferrarese, Figer, Figer, Figer, Forrest, Freitag, Fritz, Frogel, Förster Schreiber, Genzel, Genzel, Ghez, Gillessen, H. Maness, Hopman, K. Dodds-Eden, Lu, M. Zilka, Maness, Markwardt, McLaughlin, Merritt, Mighell, Miralda-Escoudé, Nayakshin, O. Pfuhl, Paumard, R. Genzel, Ramírez, Rayner, S. Gillessen, Schreiber, Seth, Seth, Sternberg, T. K. Fritz, T. Ott, Wallace   +53 more
core   +2 more sources

Transcriptome‐wide analysis of circRNA and RBP profiles and their molecular relevance for GBM

Molecular Oncology, EarlyView.
CircRNAs are differentially expressed in glioblastoma primary tumors and might serve as therapeutic targets and diagnostic markers. The investigation of circRNA and RNA‐binding proteins (RBPs) interactions shows that distinct RBPs play a role in circRNA biogenesis and function.
Julia Latowska‐Łysiak, Żaneta Zarębska, Marcin P. Sajek, Adriana Grabowska, Alessia Buratin, Paweł Głodowicz, Julia O. Misiorek, Konrad Kuczyński, Stefania Bortoluzzi, Marek Żywicki, Jan G. Kosiński, Agnieszka Rybak‐Wolf, Rafał Piestrzeniewicz, Anna M. Barciszewska, Katarzyna Rolle   +14 more
wiley   +1 more source

Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys

The Astrophysical Journal Supplement Series
Photometric stellar surveys now cover a large fraction of the sky, probe to fainter magnitudes than large-scale spectroscopic surveys, and are relatively free from the target selection biases often associated with such studies.
Jihye Hong, Timothy C. Beers, Young Sun Lee, Yang Huang, Yutaka Hirai, Jonathan Cabrera Garcia, Derek Shank, Shuai Xu, Haibo Yuan, Mohammad K. Mardini, Thomas Catapano, Gang Zhao, Zhou Fan, Jie Zheng, Wei Wang, Kefeng Tan, Jingkun Zhao, Chun Li   +17 more
doaj   +1 more source

The Parallax and 3D Kinematics of Water Masers in the Massive Star-forming Region G034.43+0.24

The Astrophysical Journal, 2023
We report a measurement of the trigonometric parallax of 22 GHz water masers in the massive star-forming region G034.43+0.24 as part of the Bar and Spiral Structure Legacy Survey using the Very Long Baseline Array.
Xiaofeng Mai, Bo Zhang, M. J. Reid, L. Moscadelli, Shuangjing Xu, Yan Sun, Jingdong Zhang, Wen Chen, Shiming Wen, Qiuyi Luo, Karl M. Menten, Xingwu Zheng, Andreas Brunthaler, Ye Xu, Guangli Wang   +14 more
doaj   +1 more source

Bailing Out the Milky Way: Variation in the Properties of Massive Dwarfs Among Galaxy-Sized Systems

, 2012
Recent kinematical constraints on the internal densities of the Milky Way's dwarf satellites have revealed a discrepancy with the subhalo populations of simulated Galaxy-scale halos in the standard CDM model of hierarchical structure formation.
A. Cibinel, A. Di Cintio ., A. Zolotov ., A.A. Klypin, A.R. Zentner, A.R. Zentner, Andrew R Zentner, B. Moore ., C. Giocoli, Chris W Purcell, D.R. Law, E.J. Tollerud, F. Hammer, G. Besla ., G.L. Bryan, J. Diemand, J. Wolf ., J.D. Simon, J.S. Bullock, K.R. Stewart, M. Niederste-Ostholt, M.T. Busha, N. Przybilla, P.S. Behroozi, R.P. van der Marel ., S. Codis ., S. Geen, S.D. White, SDSS collaboration, V. Rashkov, WMAP collaboration, X. Yang   +31 more
core   +1 more source

The shapes of Milky Way satellites: looking for signatures of tidal stirring [PDF]

, 2012
We study the shapes of Milky Way satellites in the context of the tidal stirring scenario for the formation of dwarf spheroidal galaxies. The standard procedures used to measure shapes involve smoothing and binning of data and thus may not be sufficient ...
Carlin, Jeffrey L., Kazantzidis, Stelios, Lokas, Ewa L., Majewski, Steven R., Mayer, Lucio, Moustakas, Leonidas A., Nidever, David L.   +6 more
core   +1 more source

Magnetic field formation in the Milky Way like disc galaxies of the Auriga project [PDF]

, 2017
The magnetic fields observed in the Milky Way and nearby galaxies appear to be in equipartition with the turbulent, thermal and cosmic ray energy densities, and hence are expected to be dynamically important.
R. Pakmor, F. Gómez, R. Grand, F. Marinacci, C. Simpson, V. Springel, D. Campbell, C. Frenk, T. Guillet, C. Pfrommer, S. White   +10 more
semanticscholar   +1 more source