A needle in a Haystack:
Finding Exotic Binaries in
Star Clusters
Manuel Pichardo Marcano
Star Clusters
Globular Cluster
Open Cluster
- 100 000 to 1 000 000 stars
- Old stars (age of our Galaxy)
- 100 to 1 000 stars
- Young Stars
The Pleiades
Globular Cluster
NGC 6397
Omega Cen
Imágenes: NASA/ ESA/ STScI
M70
47 tuc
NGC 6752
M22
M92
Stellar Remnants
Old Star Clusters
White Dwarf
White Dwarfs
Mass ~ 1 M☉
Radius ~ 1 R🜨
Radius ~ 1 R🜨
White Dwarfs
Mass ~ 1 M☉
Radius ~ 1 R🜨
Compact Objects
Neutron Star
White Dwarf
Mass ~ 1 M☉
Radius ~ ( 6 miles) 10 Km
Stellar Remnants
Old Star Clusters
Life Cycles of Stars
Binaries Everywhere!
Credit: Aaron Geller
Compact Binaries
R. Hynes
Compact Object and "Normal" star
Compact Binaries
R. Hynes
X-ray
Compact Object
Space Telescopes
Hubble Space Telescope
Chandra
Finding Compact Binaries in GCs
HST Optical (3' x 2')
NASA, T. Brown and S. Casertano (STScI)
HST NUV (2.7' x 2.7')
Dieball et. al (2016)
Chandra (3.65 ' x 3.65')
NASA/CXC
Look in the X-ray
Finding Compact Binaries in GCs
H-R Diagram
Cohn et. al (2011)
Hα Excess
White Dwarf + "Normal" Star
Hα deficiency
Brighter
Bluer <---> Redder
Mark A. Garlick
White Dwarf Sequence
Main Sequence
White Dwarf
Solar-like Star
X-ray (Chandra)
Hubble Data
X-ray Binaries
Credits: NASA/Rivera Sandoval
Text
Neutron Star
Neutron Star
White Dwarf
White Dwarf
Globular Cluster
NGC 6397
Omega Cen
Imágenes: NASA/ ESA/ STScI
M70
47 tuc
NGC 6752
M22
M92
Exotic Binaries Factories
Globular Cluster
NGC 6397
Omega Cen
Imágenes: NASA/ ESA/ STScI
M70
47 tuc
NGC 6752
M22
M92
Exotic Binaries Factories
¡Gracias!
Thank you!
!
Black Hole Candidate
47 Tuc
Optical (Hubble)
Radio ATCA
Finding Black Holes
Finding Black Holes
Finding Black Holes
Redback Pulsar
Hubble Space Telescope
Space Telescopes
Hubble Space Telescope
Life Cycles of Stars
Life Cycles of Stars
Title Text
Subtitle
Finding Black Holes
Neutron Star Binaries
Credit: Roen Kelly/Discover
Main et al 2018 (Nature)
Redback 'spider' Pulsar
A new candidate Redback Pulsar
HUGS catalogue. (Piotto et al. 2015, Nardiello et al. 2018)
Pichardo Marcano et. al (2021a)
X-ray
HST F336W
Radio
Zhao et al.(2020)
X-ray Binaries
Credits: NASA/Rivera Sandoval
Text
Neutron Star
Neutron Star
White Dwarf
White Dwarf
Extra
Globular Cluster
Globular Cluster
A new candidate Redback Pulsar
Variable
Periodic
Lomb-Scargle periodogram
Pichardo Marcano et. al (2021a)
AstroOnTapMarch24
By mmarcano22
