Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Sjouwerman, Lorant"'
Autor:
Xia, Tian-Ye, Shen, Juntai, Li, Zhi, Feng, Huaijin, Sjouwerman, Loránt O., Pihlström, Ylva M., Lewis, Megan O., Stroh, Michael C.
We introduce a novel method that utilizes the longitude-velocity (l-v) envelope to constrain the Milky Way (MW) bar potential. Previous work (Habing 2016) used the l-v diagram to explain the distribution of the observed high-velocity stars. We succes
Externí odkaz:
http://arxiv.org/abs/2410.05922
Autor:
Bhattacharya, Rajorshi, Medina, Brandon M., Pihlström, Ylva M., Sjouwerman, Loránt O., Lewis, Megan O., Sahai, Raghvendra, Stroh, Michael C., Quiroga-Nuñez, Luis Henry, van Langevelde, Huib Jan, Claussen, Mark J, Weller, Rachel
We present a method to estimate distances to Asymptotic Giant Branch (AGB) stars in the Galaxy, using spectral energy distributions (SEDs) in the near- and mid-infrared. By assuming that a given set of source properties (initial mass, stellar tempera
Externí odkaz:
http://arxiv.org/abs/2405.02459
As one of the nearest and most dormant supermassive black holes (SMBHs), M31* provides a rare but promising opportunity for studying the physics of black hole accretion and feedback at the quiescent state. Previous Karl G. Jansky Very Large Array (VL
Externí odkaz:
http://arxiv.org/abs/2306.07189
Autor:
Quiroga-Nuñez, Luis Henry, van Langevelde, Huib Jan, Sjouwerman, Loránt O., Pihlström, Ylva M., Brown, Anthony G. A., Rich, R. Michael, Stroh, Michael C., Lewis, Megan O., Habing, Harm J.
Radio campaigns using maser stellar beacons have provided crucial information to characterize Galactic stellar populations. Currently, the Bulge Asymmetries and Dynamical Evolution (BAaDE) project is surveying infrared (IR) color-selected targets for
Externí odkaz:
http://arxiv.org/abs/2009.01909
We present 43 GHz VLA spectra for 51 AGB sources with the goal of verifying an infrared (IR) color cut intended to separate Carbon-rich (C) and Oxygen-rich (O) AGB sources throughout the Galaxy. The color cut is a simple line in the $[K_s]-[A]$ versu
Externí odkaz:
http://arxiv.org/abs/2008.06535
Autor:
Lewis, Megan O., Pihlström, Ylva M., Sjouwerman, Loránt O., Stroh, Michael C., Morris, Mark R.
Detections of SiO masers from the Bulge Asymmetries and Dynamical Evolution (BAaDE) survey more tightly define the region where Oxygen-rich (O) Asymptotic Giant Branch (AGB) stars reside in multiple infrared (IR) color-color diagrams. Using MSX and 2
Externí odkaz:
http://arxiv.org/abs/2002.11095
The Local Group dwarf elliptical galaxy M32 hosts one of the nearest and most under-luminous super-massive black holes (SMBHs) ever known, offering a rare opportunity to study the physics of accreting SMBHs at the most quiescent state. Recent Very La
Externí odkaz:
http://arxiv.org/abs/2001.00827
Autor:
Stroh, Michael C., Pihlström, Ylva M., Sjouwerman, Loránt O., Lewis, Megan O., Claussen, Mark J, Morris, Mark R., Rich, R. Michael
We report on the first 1,432 sources observed using the Atacama Large Millimeter/submillimeter Array (ALMA), from the Bulge Asymmetries and Dynamical Evolution (BAaDE) survey, which aims to obtain tens of thousands of line-of-sight velocities from Si
Externí odkaz:
http://arxiv.org/abs/1909.02090
Autor:
Rich, R. Michael, Trapp, Adam, Morris, Mark R., Sjouwerman, Lorant, Claussen, Mark, Stroh, Michael, Pihlstrom, Ylva
Publikováno v:
PASP Conference Series, 513, p. 17 (2018)
We consider interesting results on the kinematics of the bulge, beginning with Mould's (1983) measurement of the velocity dispersion of the late M giants in the bulge, and carrying the discussion on to the present day, to discuss the largest survey e
Externí odkaz:
http://arxiv.org/abs/1904.04373
Autor:
van Langevelde, Huib, Quiroga-Nuñez, Luis Henry, Vlemmings, Wouter, Loinard, Laurent, Honma, Mareki, Nakagawa, Akiharu, Immer, Katharina, Burns, Ross, Pihlström, Ylva, Sjouwerman, Lorant, Rich, R. Michael, Natarajan, Iniyan, Deane, Roger
With the publication of Gaia DR2, 1.3 billion stars now have public parallax and proper motion measurements. In this contribution, we compare the results for sources that have both optical and radio measurements, focusing on circumstellar masers. For
Externí odkaz:
http://arxiv.org/abs/1901.07804