Zobrazeno 1 - 10
of 2 596
pro vyhledávání: '"Perseus Arm"'
Autor:
Rigby, Andrew J., Thompson, Mark A., Eden, David J., Moore, Toby J. T., Mutale, Mubela, Peretto, Nicolas, Plume, Rene, Urquhart, James S., Williams, Gwenllian M.
The external environments surrounding molecular clouds vary widely across galaxies such as the Milky Way, and statistical samples of clouds from surveys are required to understand them. We present the Perseus Arm Molecular Survey (PAMS), a James Cler
Externí odkaz:
http://arxiv.org/abs/2409.01255
Autor:
Chen, J. L., Zhang, J. S., Henkel, C., Yan, Y. T., Yu, H. Z., Qiu, J. J., Tang, X. D., Wang, J., Liu, W., Wang, Y. X., Zheng, Y. H., Zhao, J. Y., Zou, Y. P.
Our aim is to measure the interstellar 14N/15N ratio across the Galaxy, to establish a standard data set on interstellar ammonia isotope ratios, and to provide new constraints on the Galactic chemical evolution. The (J, K ) = (1, 1), (2, 2), and (3,
Externí odkaz:
http://arxiv.org/abs/2208.03977
In this work we demonstrate that the Perseus Arm is not a continuous structure of molecular gas in the second quadrant. We first show that the observed, distanced-resolved velocity structure of the Galaxy in the outer disk is capable of creating illu
Externí odkaz:
http://arxiv.org/abs/2112.07677
Autor:
Sakai, Nobuyuki, Nakanishi, Hiroyuki, Kurahara, Kohei, Sakai, Daisuke, Hachisuka, Kazuya, Kim, Jeong-Sook, Kameya, Osamu
The Perseus arm has a gap in Galactic longitudes (l) between 50 and 80 deg (hereafter the Perseus arm gap) where the arm has little star formation activity. To better understand the gap, we conducted astrometric observations with VERA and analyzed ar
Externí odkaz:
http://arxiv.org/abs/2111.14900
Autor:
Hillenbrand, Lynne A., De, Kishalay, Hankins, Matthew, Kasliwal, Mansi M., Rebull, Luisa M., Lau, Ryan M., Cutri, Roc M., Ashley, Michael C. B., Karambelkar, Viraj R., Moore, Anna M., Travouillon, T., Mainzer, A. K.
We report the discovery of a likely outbursting Class I young stellar object, associated with the star-forming region NGC 281-W (distance $\sim 2.8$ kpc). The source is currently seen only at infrared wavelengths, appearing in both the Palomar Gattin
Externí odkaz:
http://arxiv.org/abs/2101.04203
The INT Photometric H$\alpha$ Survey (IPHAS) has provided us with a number of new-emission line sources, among which planetary nebulae (PNe) constitute an important fraction. Here we present a detailed analysis of the IPHAS nebula Sab\,19 (IPHASX\,J0
Externí odkaz:
http://arxiv.org/abs/2010.05553
Autor:
Román-Zúñiga, Carlos, Roman-Lopes, Alexandre, Tapia, Mauricio, Hernández, Jesús, Ramírez-Preciado, Valeria
Publikováno v:
Astrophysical Journal Letters 2018
In this letter we present evidence of coherent outward motion of a sample of young stars ($t<$30 Myr) in the Perseus Arm, whose apparent origin is located in the vicinity of the W3/W4/W5 complex. Using astrometric and photometric data from the Gaia D
Externí odkaz:
http://arxiv.org/abs/1812.11102
Autor:
Busch, Michael P., Allen, Ronald J., Engelke, Philip D., Hogg, David E., Neufeld, David A., Wolfire, Mark G.
We report the results from a new, highly sensitive ($\Delta T_{mb} \sim 3 $mK) survey for thermal OH emission at 1665 and 1667 MHz over a dense, 9 x 9-pixel grid covering a $1\deg$ x $1\deg$ patch of sky in the direction of $l = 105\deg, b = +2.50\de
Externí odkaz:
http://arxiv.org/abs/1908.04829
The Perseus Arm is the closest Galactic spiral arm from the Sun, offering an excellent opportunity to study in detail its stellar population. However, its distance has been controversial with discrepancies by a factor of two. Kinematic distances are
Externí odkaz:
http://arxiv.org/abs/1905.08593
Autor:
Vallee, Jacques P
Publikováno v:
2018 August 10 issue, Astrophysical Journal, vol. 863, art. 52, pages 1-6
The radial distance to the co-rotation radius Rcoro (where the angular speed of the gas and stars in orbit around the Galactic Centre is equal to the angular speed of the spiral arm pattern) has often been predicted (at various places), but not measu
Externí odkaz:
http://arxiv.org/abs/1808.01379