  Metallic-line A (Am) stars are main-sequence stars of around twice the mass
of the Sun that show element abundance peculiarities in their spectra. The
radiative levitation and diffusive settling processes responsible for these
abundance anomalies should also deplete helium from the region of the envelope
that drives delta Scuti pulsations. Therefore, these stars are not expected to
be delta Scuti stars, which pulsate in multiple radial and nonradial modes with
periods of around 2 hours. As part of the NASA TESS Guest Investigator Program,
we proposed photometric observations in 2-minute cadence for samples of bright
(visual magnitudes around 7-8) Am stars. Our 2020 SAS meeting paper reported on
observations of 21 stars, finding one delta Scuti star and two delta Scuti /
gamma Doradus hybrid candidates, as well as many stars with photometric
variability possibly caused by rotation and starspots. Here we present an
update including 34 additional stars observed up to February 2021, among them
three delta Scuti stars and two delta Scuti / gamma Doradus hybrid candidates.
Confirming the pulsations in these stars requires further data analysis and
follow-up observations, because of possible background stars or contamination
in the TESS CCD pixels with scale 21 arc sec per pixel. Asteroseismic modeling
of these stars will be important to understand the reasons for their
pulsations.
