Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Pihlström, Y."'
Autor:
Lewis, M. O., Bhattacharya, R., Sjouwerman, L. O., Pihlström, Y. M., Pietrzyński, G., Sahai, R., Karczmarek, P., Górski, M.
Publikováno v:
A&A 677, A153 (2023)
We establish a sample of 370 Mira variables that are likely near the Galactic center (GC). The sources have been selected from the OGLE and BAaDE surveys based on their sky coordinates, OGLE classifications, and BAaDE maser-derived line-of-sight velo
Externí odkaz:
http://arxiv.org/abs/2308.01710
Autor:
Strack, A., Araya, E. D., Lebrón, M. E., Minchin, R. F., Arce, H. G., Ghosh, T., Hofner, P., Kurtz, S., Olmi, L., Pihlström, Y., Salter, C. J.
Publikováno v:
2019 ApJ 878 90
Jets and outflows are ubiquitous phenomena in astrophysics, found in our Galaxy in diverse environments, from the formation of stars to late-type stellar objects. We present observations conducted with the 305m Arecibo Telescope of the pre-planetary
Externí odkaz:
http://arxiv.org/abs/1906.08245
Autor:
Quiroga-Nuñez, L. H., van Langevelde, H. J., Sjouwerman, L. O., Pihlström, Y. M., Reid, M. J., Brown, A. G. A., Green, J. A.
Radio astrometric campaigns using VLBI have provided distances and proper motions for masers associated with young massive stars (BeSSeL survey). The ongoing BAaDE project plans to obtain astrometric information of SiO maser stars located in the inne
Externí odkaz:
http://arxiv.org/abs/1710.05441
Autor:
Quiroga-Nuñez, L. H., van Langevelde, H. J., Reid, M. J., Sjouwerman, L. O., Pihlström, Y. M., Brown, A. G. A., Green, J. A.
Using the VLBA, the BeSSeL survey has provided distances and proper motions of young massive stars, allowing an accurate measure of the Galactic spiral structure. By the same technique, we are planning to map the inner Galaxy using positions and velo
Externí odkaz:
http://arxiv.org/abs/1708.05538
Autor:
Quiroga-Nuñez, L. H., van Langevelde, H. J., Pihlström, Y. M., Sjouwerman, L. O., Brown, A. G. A.
The Bulge Asymmetries and Dynamical Evolution (BAaDE) survey will provide positions and line-of-sight velocities of ~20,000 evolved, maser bearing stars in the Galactic plane. Although this Galactic region is affected by optical extinction, BAaDE tar
Externí odkaz:
http://arxiv.org/abs/1707.04189
Autor:
Mesler, R. A., Whalen, Daniel J., Smidt, Joseph, Fryer, Chris L., Lloyd-Ronning, N. M., Pihlström, Y. M.
Gamma-ray bursts (GRBs) are the ultimate cosmic lighthouses, capable of illuminating the universe at its earliest epochs. Could such events probe the properties of the first stars at z $\sim$ 20, the end of the cosmic Dark Ages? Previous studies of P
Externí odkaz:
http://arxiv.org/abs/1401.5565
Autor:
Pihlström, Y. M., Sjouwerman, L. O., Frail, D. A., Claussen, M. J., Mesler, R. A., McEwen, B. C.
We have used the Karl G. Jansky Very Large Array (VLA) to search for 36 GHz and 44 GHz methanol (CH3OH) lines in a sample of 21 Galactic supernova remnants (SNRs). Mainly the regions of the SNRs with 1720 MHz OH masers were observed. Despite the limi
Externí odkaz:
http://arxiv.org/abs/1312.6882
We present the first variability study of the 1720 MHz OH masers located in the Galactic Center. Most of these masers are associated with the interaction between the supernova remnant SgrAEast and the interstellar medium, but a few masers are associa
Externí odkaz:
http://arxiv.org/abs/1107.4341
We report on the detection of 44 GHz Class I methanol (CH3OH) maser emission in the SgrA complex with the Expanded Very Large Array (EVLA). These EVLA observations show that the SgrA complex harbors at least four different tracers of shocked regions
Externí odkaz:
http://arxiv.org/abs/1105.4377
We present the results of studies of a new class of 6.7 GHz methanol maser sources with a ring-like emission structure discovered recently with the EVN. We have used the VLA to search for water masers at 22 GHz and radio continuum at 8.4 GHz towards
Externí odkaz:
http://arxiv.org/abs/1102.0854