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SUMMARY:The Milky Way's Rotation Curve Derived from Classical Cepheids
DTSTART;VALUE=DATE-TIME:20230321T085500Z
DTEND;VALUE=DATE-TIME:20230321T085700Z
DTSTAMP;VALUE=DATE-TIME:20241114T092418Z
UID:indico-contribution-231@meetings.aip.de
DESCRIPTION:Speakers: Raj Kumar  Pradhan (Central Department of Physics\, 
 Tribhuvan University)\nClassical Cepheids are excellent tracers to estimat
 e the rotation velocity of the galaxies because they provide better distan
 ce accuracy with less uncertainty. With stringent radial velocity from the
  recent Gaia DR3 and proper motion\, we estimate the rotation velocity of 
 the Milky Way galaxy for 909 Classical Cepheids. We have used a more accur
 ate distance estimated based on the period-luminosity from a mid-infrared 
 survey. Up to 20 kpc\, we find the best-fit rotation velocity of 240.15 ±
  1.95 km/s (R − R_0) and a concentration parameter of 17.66 ± 0.09. Als
 o\, we obtain the virial mass of (5.73 ± 0.04 × 10^11)M_0.\n\nhttps://ia
 us379.aip.de/event/20/contributions/231/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/231/
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