Results 81 to 90 of about 7,749 (214)

PHAST. The Panchromatic Hubble Andromeda Southern Treasury. I. Ultraviolet and Optical Photometry of over 90 Million Stars in M31

The Astrophysical Journal
The Panchromatic Hubble Andromeda Southern Treasury (PHAST) is a large 195-orbit Hubble Space Telescope program imaging ∼0.45 deg ^2 of the southern half of M31's star-forming disk at optical and near-ultraviolet (NUV) wavelengths.
Zhuo Chen, Benjamin Williams, Dustin Lang, Andrew Dolphin, Meredith Durbin, Julianne J. Dalcanton, Adam Smercina, Léo Girardi, Claire E. Murray, Eric F. Bell, Martha L. Boyer, Richard D’Souza, Karoline Gilbert, Karl Gordon, Puragra Guhathakurta, Francois Hammer, L. Clifton Johnson, Tod R. Lauer, Margaret Lazzarini, Jeremiah W. Murphy, Ekta Patel, Amanda Quirk, Mariangelly Díaz Rodríguez, Julia Christine Roman-Duval, Robyn E. Sanderson, Anil Seth, Tobin M. Wainer, Daniel R. Weisz   +27 more
doaj   +1 more source

THE MURMUR OF THE HIDDEN MONSTER: CHANDRA 'S DECADAL VIEW OF THE SUPERMASSIVE BLACK HOLE IN M31 [PDF]

, 2011
Jun Yi Koay, M. R. Garcia, W. Forman, C. Jones, Ralph Kraft, D. Lal, S. S. Murray, Q. Daniel Wang   +7 more
openalex   +1 more source

Far-ultraviolet to Far-infrared Spectral Energy Distribution Modeling of the Star Formation History across M31

The Astronomical Journal
Our neighboring galaxy M31 has been recently surveyed at the far- and near-ultraviolet (FUV and NUV) with the UVIT telescope on AstroSat, which provides unprecedented sensitivity to young stellar populations.
Denis A. Leahy, Jakob Hansen, Andrew M. Hopkins   +2 more
doaj   +1 more source

XMM‐NewtonDiscovery of 217 s Pulsations in the Brightest Persistent Supersoft X‐Ray Source in M31 [PDF]

, 2008
S. Trudolyubov, W. Priedhorsky
openalex   +1 more source

The Samples and Binary Fractions of Red Supergiants in M31 and M33 by the HST Observations

The Astrophysical Journal
The binarity of red supergiants (RSGs) influences their evolution and the fate of supernovae. We investigate the binary fraction of RSGs in the Andromeda galaxy (M31) and Triangulum galaxy (M33) using photometry from the Hubble Space Telescope (HST ...
Min Dai, Shu Wang, Biwei Jiang, Ying Li
doaj   +1 more source

Deep HST V- and I-Band Observations of the Halo of M31: Evidence for Multiple Stellar Populations [PDF]

, 1996
Stephen Holland, Gregory G. Fahlman, Harvey B. Richer   +2 more
openalex   +1 more source

A systematic literature review of the Pay-What-You-Want pricing under PRISMA protocol

European Research on Management and Business Economics
This study aims to systematically examine the Pay-What-You-Want (PWYW) pricing model, which has become increasingly popular among innovative strategies. The PWYW model offers an unconventional approach by giving consumers the power to determine the price
Oktay Güzel, Emili Vizuete-Luciano, José María Merigó-Lindahl   +2 more
doaj   +1 more source

Distribution and motions of HI in M31 [PDF]

, 1985
E. Brinks, W. B. Burton
openalex   +1 more source

The Tucana dwarf spheroidal: a distant backsplash galaxy of M31? [PDF]

, 2023
Isabel Santos-Santos, Julio F. Navarro, Alan W. McConnachie   +2 more
openalex   +1 more source

Ring or No Ring—Revisiting the Multiphase Nuclear Environment in M31

The Astrophysical Journal
Nuclear rings, prevalent in barred galaxies, are essential to understanding gas transport toward galactic nuclei. However, the peculiar nuclear ring in our neighboring galaxy M31 remains poorly understood.
Zongnan Li, Zhao Su, Sumin Wang, Yufan F. Zhou, Zhiyuan Li, Xuanyi Lyu, Fanyi Meng, Kai Zhang, Di Li, Chaowei Tsai, Jingwen Wu, Jiachang Zhang   +11 more
doaj   +1 more source