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Type of talk
Seminar
Speaker
Saurabh Sharma
Affiliation
ARIES
Venue
Auditorium
Abstract

The optical V I photometry in an area of about 6 ◦ × 6 ◦ in the Auriga region centered
at l ∼ 173 ◦ alongwith the archival data from the 2MASS and W ISE surveys has been
used to generate a catalog of young stellar objects (YSOs) in the region. The catalog
can be considered complete down to 0.9 M ⊙ . The nature of the identified YSOs in
the studied region and their spatial distribution are used to study the star formation
scenario in the region. The distribution of the YSOs alongwith that of the ionized and
molecular gas reveals two ring-like structures stretching over an area of a few degrees
in extent, suggesting some energetic events. A majority of the Class I YSOs are found
to be associated with the ring-like structures, whereas the relatively older population,
i.e., the Class II objects are rather randomly distributed. Using the minimal sampling
tree analysis, we found 26 cores having 5 or more members. The cores are between
∼0.5 pc - ∼ 3 pc in size and are somewhat elongated. The star formation efficiency in
most of the core region varies between 2% - 25% indicating that the stellar cores could
be bound regions. The radius of these cores also support it. Since a majority of the
younger population having ages ∼ 1 Myr are found to be located at the periphery of
the bubbles, hence we presume that these could be the products of the star formation
of the third generation triggered by multiple supernova explosions. The center of the
bubbles appears to be above the formal Galactic plane.

Email Speaker
saurabh@aries.res.in
About Speaker

The speaker is scientist in ARIES.

Email Host
indra@aries.res.in
Host Name
Indranil Chattopadhyay
Host Phone (ext/mob)
712