590 citations · 8.8k across the 153 of their papers we have counts for
9 papers · 1 filter
The Spheroid Luminosity and Mass Functions From HST Star Counts
Andrew Gould, Chris Flynn, John N. Bahcall
We analyze 166 spheroid subdwarfs found in 53 fields observed with the Wide Field Camera on the {\it Hubble Space Telescope}. The fields cover 221 square arcmin ov…
The Proper Motion of NGC 6522 in Baade's Window
Donald M. Terndrup, Piotr Popowski, Andrew Gould +2
We have detected seven stars with a common proper motion which are located within 2.5 arcminutes of the globular cluster NGC 6522 in the Baade's Window field of the Galactic bulge.…
Pixel Lensing Search For Bright Microlensing Events and Variables in the Galactic Bulge
Andrew Gould, D. L. DePoy
We describe a new method to search for gravitational microlensing toward the Galactic bulge that employs a small camera rather than a conventional telescope and probes new regions…
The Zero Point of Extinction Toward Baade's Window From RR Lyrae Stars
C. Alcock, R. A. Allsman, D. R. Alves +20
We measure the zero point of the Stanek (1996) extinction map by comparing the observed (V-K) colors of 20 RR Lyrae stars (type ab) found in the MACHO survey with their intrinsic (…
Non-Acceleration of Sgr A*: Implications for Galactic Structure
Andrew Gould, Solange V. Ramirez
We show that observations by Backer and collaborators over the past two decades constrain the time derivative of the proper motion of Sgr A* to be less than 0.14 mas yr^{-2}. Using…
Upper Limit to the Distance to the Large Magellanic Cloud
Andrew Gould, Osamu Uza
We remeasure the ``light echo'' times to the near and far side of the ring around SN 1987A using the method of Gould (1995) and the new reductions of the original UV spectra by Son…
The Zero Point of Extinction Toward Baade's Window
Andrew Gould, Piotr Popowski, Donald M. Terndrup
We measure the zero point of the Stanek (1996) extinction map by comparing the observed (V-K) colors of 206 K giant stars with their intrinsic (V-K)_0 colors as derived from their…
Microlensing: Current Results and Future Prospects
Andrew Gould
The initial results of microlensing surveys toward the Galactic bulge and the LMC are puzzling. Toward the LMC, the total mass in MACHOs is of order half that required to explain t…
Mathematics of Statistical Parallax and the Local Distance Scale
Piotr Popowski, Andrew Gould
We present a mathematical analysis of the statistical parallax method. The method yields physical insight into the maximum-likelihood determinations of the luminosity and velocity…