Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Beerman, Lori C."'
Autor:
Johnson, L. Clifton, Seth, Anil C., Dalcanton, Julianne J., Beerman, Lori C., Fouesneau, Morgan, Weisz, Daniel R., Bell, Timothy A., Dolphin, Andrew E., Sandstrom, Karin, Williams, Benjamin F.
We measure the mass function for a sample of 840 young star clusters with ages between 10-300 Myr observed by the Panchromatic Hubble Andromeda Treasury (PHAT) survey in M31. The data show clear evidence of a high-mass truncation: only 15 clusters mo
Externí odkaz:
http://arxiv.org/abs/1703.10312
Autor:
Johnson, L. Clifton, Seth, Anil C., Dalcanton, Julianne J., Beerman, Lori C., Fouesneau, Morgan, Lewis, Alexia R., Weisz, Daniel R., Williams, Benjamin F., Bell, Eric F., Dolphin, Andrew E., Larsen, Søren S., Sandstrom, Karin, Skillman, Evan D.
We use the Panchromatic Hubble Andromeda Treasury (PHAT) survey dataset to perform spatially resolved measurements of star cluster formation efficiency ($\Gamma$), the fraction of stellar mass formed in long-lived star clusters. We use robust star fo
Externí odkaz:
http://arxiv.org/abs/1606.05349
Autor:
Senchyna, Peter, Johnson, L. Clifton, Dalcanton, Julianne J., Beerman, Lori C., Fouesneau, Morgan, Dolphin, Andrew, Williams, Benjamin F., Rosenfield, Philip, Larsen, Søren S.
We present a sample of 11 M31 Cepheids in stellar clusters, derived from the overlap of the Panchromatic Hubble Andromeda Treasury (PHAT) cluster catalog and the Pan-STARRS1 (PS1) disk Cepheid catalog. After identifying the PS1 Cepheids in the HST ca
Externí odkaz:
http://arxiv.org/abs/1509.04791
Autor:
Weisz, Daniel R., Johnson, L. Clifton, Foreman-Mackey, Daniel, Dolphin, Andrew E., Beerman, Lori C., Williams, Benjamin F., Dalcanton, Julianne J., Rix, Hans-Walter, Hogg, David W., Fouesneau, Morgan, Johnson, Benjamin D., Bell, Eric F., Boyer, Martha L., Gouliermis, Dimitrios, Guhathakurta, Puragra, Kalirai, Jason S., Lewis, Alexia R., Seth, Anil C., Skillman, Evan D.
We have undertaken the largest systematic study of the high-mass stellar initial mass function (IMF) to date using the optical color-magnitude diagrams (CMDs) of 85 resolved, young (4 Myr < t < 25 Myr), intermediate mass star clusters (10^3-10^4 Msun
Externí odkaz:
http://arxiv.org/abs/1502.06621
Autor:
Johnson, L. Clifton, Seth, Anil C., Dalcanton, Julianne J., Wallace, Matthew L., Simpson, Robert J., Lintott, Chris J., Kapadia, Amit, Skillman, Evan D., Caldwell, Nelson, Fouesneau, Morgan, Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Gouliermis, Dimitrios A., Sarajedini, Ata
We construct a stellar cluster catalog for the Panchromatic Hubble Andromeda Treasury (PHAT) survey using image classifications collected from the Andromeda Project citizen science website. We identify 2,753 clusters and 2,270 background galaxies wit
Externí odkaz:
http://arxiv.org/abs/1501.04966
Autor:
Gouliermis, Dimitrios A., Beerman, Lori C., Bianchi, Luciana, Dalcanton, Julianne J., Dolphin, Andrew E., Fouesneau, Morgan, Gordon, Karl D., Guhathakurta, Puragra, Kalirai, Jason, Lang, Dustin, Seth, Anil, Skillman, Evan, Weisz, Daniel R., Williams, Benjamin F.
We investigate the clustering of early-type stars younger than 300 Myr on galactic scales in M31. Based on the stellar photometric catalogs of the Panchromatic Hubble Andromeda Treasury program that also provides stellar parameters derived from the i
Externí odkaz:
http://arxiv.org/abs/1407.0829
Autor:
Weisz, Daniel R., Fouesneau, Morgan, Hogg, David W., Rix, Hans-Walter, Dolphin, Andrew E., Dalcanton, Julianne J., Foreman-Mackey, Daniel T., Lang, Dustin, Johnson, L. Clifton, Beerman, Lori C., Bell, Eric F., Gordon, Karl D., Gouliermis, Dimitrios, Kalirai, Jason S., Skillman, Evan D., Williams, Benjamin F.
We present a probabilistic approach for inferring the parameters of the present day power-law stellar mass function (MF) of a resolved young star cluster. This technique (a) fully exploits the information content of a given dataset; (b) accounts for
Externí odkaz:
http://arxiv.org/abs/1211.6105
Autor:
Beerman, Lori C., Johnson, L. Clifton, Fouesneau, Morgan, Dalcanton, Julianne J., Weisz, Daniel R., Seth, Anil C., Williams, Ben F., Bell, Eric F., Bianchi, Luciana C., Caldwell, Nelson, Dolphin, Andrew E., Gouliermis, Dimitrios A., Kalirai, Jason S., Larsen, Søren S., Melbourne, Jason L., Rix, Hans-Walter, Skillman, Evan D.
The apparent age and mass of a stellar cluster can be strongly affected by stochastic sampling of the stellar initial mass function, when inferred from the integrated color of low mass clusters (less than ~10^4 solar masses). We use simulated star cl
Externí odkaz:
http://arxiv.org/abs/1209.5395
Autor:
Johnson, L. Clifton, Seth, Anil C., Dalcanton, Julianne J., Caldwell, Nelson, Fouesneau, Morgan, Gouliermis, Dimitrios A., Hodge, Paul W., Larsen, Soeren S., Olsen, Knut A. G., Roman, Izaskun San, Sarajedini, Ata, Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Bianchi, Luciana, Dolphin, Andrew E., Girardi, Leo, Guhathakurta, Puragra, Kalirai, Jason, Lang, Dustin, Monachesi, Antonela, Nanda, Sanjay, Rix, Hans-Walter, Skillman, Evan D.
Publikováno v:
Astrophysical Journal, 752, 95 (2012)
The Panchromatic Hubble Andromeda Treasury (PHAT) survey is an on-going Hubble Space Telescope (HST) multi-cycle program to obtain high spatial resolution imaging of one-third of the M31 disk at ultraviolet through near-infrared wavelengths. In this
Externí odkaz:
http://arxiv.org/abs/1204.3091
Autor:
Sitko, Michael L., Day, Amanda N., Kimes, Robin L., Beerman, Lori C., Martus, Cameron, Lynch, David K., Russell, Ray W., Grady, Carol A., Schneider, Glenn, Lisse, Carey M., Nuth, Joseph A., Cure, Michel, Henden, Arne A., Kraus, Stefan, Motta, Veronica, Tamura, Motohide, Hornbeck, Jeremy, Williger, Gerard M., Fugazza, Dino
We present thirteen epochs of near-infrared (0.8-5 micron) spectroscopic observations of the pre-transitional, "gapped" disk system in SAO 206462 (=HD 135344B). In all, six gas emission lines (including Br gamma, Pa beta, and the 0.8446 micron line o
Externí odkaz:
http://arxiv.org/abs/1110.2441