Suvrath Mahadevan

[Suvrath Mahadevan @SuvrathM]

A new planet in the habitable zone of its star, and less than 20 light years away, discovered with @HPFspectrograph and @NEID_at_WIYN . The stars are tricky and noisy at this level of detection, but our instruments and analysis techniques are also getting more sophisticated!

[HPF @HPFspectrograph]

We have discovered a super-Earth in the Habitable Zone of a very nearby star, GJ 251. The system is close enough to us that it could potentially be imaged by upcoming 30-meter telescopes. Study led by HPF team member Corey Beard https://t.co/K7L872hO6q

[Suvrath Mahadevan @SuvrathM]

In the 60's Peter van De Kamp claimed the astrometric detection of a giant exoplanet - it was the telescope optics, not an exoplanet! Astrometry is hard. An opening of the floodgates (?) with confirmation of Gaia4b with @HPFspectrograph @NEID_at_WIYN using data from @ESAGaia

[Guðmundur Stefánsson @gummiks]

⚠️New paper!⚠️ We have discovered a planet, Gaia-4b, and a brown dwarf, Gaia-5b, using the @ESAGaia spacecraft. Gaia-4b is Gaia's first planet detected with astrometry alone and represents the tip-of-the-iceberg of the 100s-1000s of planets that Gaia is expected to detect.

[Suvrath Mahadevan @SuvrathM]

Congratulations to @ArvindFGupta for leading this discovery of the most eccentric transiting planet know using @NEID_at_WIYN @HPFspectrograph TESS, HARP-N. A beautiful and strange system amenable to further followup. @NOIRLabAstro @PSUScience @PSU_CEHW @PSUresearch @mcdonaldobs

[Arvind Gupta @ArvindFGupta]

Pausing my twitter hiatus to announce my new paper published in Nature today: https://t.co/0hZd3fJN6P
We confirm and characterize TIC 241249530 b, a warm Jupiter on an eccentric & retrograde orbit, and we show that it is en route to becoming a hot Jupiter ⤵️

[Suvrath Mahadevan @SuvrathM]

@girlandkat @NEID_at_WIYN @WIYNObservatory @PSUScience @AstroPSU @Nasaj Cannot destroy a world that never was! We are in the business of discovery, not destruction :)

[Suvrath Mahadevan @SuvrathM]

NEID strikes! No fictional planets are safe. Sorry Vulcan! All part of our journey to better understand stellar activity and discover terrestrial worlds around the nearest stars. @NEID_at_WIYN @WIYNObservatory @PSUScience @AstroPSU @NASAJ

[WIYN Observatory @WIYNObservatory]

.@NASAJPL press release about the paper 'The Death of Vulcan: NEID Reveals That the Planet Candidate Orbiting HD 26965 Is Stellar Activity' led by PI Abigail Burrows using @NEID_at_WIYN data. @NOIRLabAstro @NOIRLabAstroES
https://t.co/zyltt9B74w

[Penn State Eberly College of Science @PSUScience]

The discovery of a planet that is far too massive for its sun is calling into question what was previously understood about the formation of planets and their solar systems, according to #PennState researchers. https://t.co/hpHzp2ESb5 @SuvrathM @gummiks @HPFspectrograph @PSU_CEHW

[Keith Smith @DrKeithSmith]

Stefansson (@gummiks) et al. have discovered an #exoplanet 13 times the mass of Earth orbiting an M dwarf star of only 0.1 solar masses. Such a high planet-to-star mass ratio is not predicted by planet formation theories.
https://t.co/FGCxfEWj5C

[HPF @HPFspectrograph]

Big announcement on the HPF blog: our HPF exoplanet survey has discovered a Neptune-mass exoplanet on a close-in orbit around a very low-mass star. This planet challenges our understanding of planet formation around low-mass stars: https://t.co/NseJWJPqOJ

[Suvrath Mahadevan @SuvrathM]

Another neat @HPFspectrograph discovery lead by @gummiks Paper available in @ScienceMagazine and the Penn State press release is here https://t.co/MfwWaTUW8H @PSUScience @PSU_CEHW @mcdonaldobs

[Guðmundur Stefánsson @gummiks]

⚠️New paper!⚠️We discovered a Neptune-mass planet in a close-in orbit around a very low mass star. The planet is surprisingly massive for the low mass of its star, posing a challenge for how it might have formed. Paper is now available in @ScienceMagazine. Fig credit: @PSUScience

[Suvrath Mahadevan @SuvrathM]

Thanks @PSUScience and @AstroPSU for this appointment! I think its also a recognition of the fantastic graduate students, postdocs, @HPFspectrograph @NEID_at_WIYN teams and colleagues that I've been ever so privileged to work with!

[Penn State Eberly College of Science @PSUScience]

Congratulations to #PennState researcher Suvrath Mahadevan on being named Verne M. Willaman Professor of Astronomy and Astrophysics! https://t.co/S50eFomRd9 @SuvrathM

[Suvrath Mahadevan @SuvrathM]

An amazing result from @gully_ and team using our @HPFspectrograph. A huge leading tail detected in the near-infrared Helium 10830 Angstrom line. The more we study exoplanets the more amazing they seem to get! @mcdonaldobs @AstroPSU @PSUScience

[gully @gully_]

Hey! Check out my brand new paper!
We discover a huge leading tail of Helium in HAT-P-67 b, an inflated hot Saturn, with up to 10% transit depth, and actively undergoing *runaway inflation*.

https://t.co/iILOOw6tDm

[Suvrath Mahadevan @SuvrathM]

@EricMamajek @Astro_Wright Indeed! Though its taken taken major developments in astronomical near-infrared spectroscopy to do this accurately, given that the best phosphorous lines for this are in the NIR. For eg. https://t.co/G4nxW1otub

[Suvrath Mahadevan @SuvrathM]

New discovery using @HPFspectrograph at the Hobby-Eberly Telescope. Giant tidal tails of Helium escaping a hot Jupiter! Neat work lead by @astrozjzhang. Enabled by both the high resolution NIR capabilities of HPF and the queue-scheduled HET! @PSUScience @AstroPSU @mcdonaldobs

[Zhoujian (ZJ) Zhang @astrozjzhang]

Super excited to share that we discovered GIANT tails of the helium escaping the hot Jupiter HAT-P-32b using @HPFspectrograph, and our study is published by @ScienceAdvances today!

https://t.co/doVFVTSCOs

[Suvrath Mahadevan @SuvrathM]

End of the EPRV 5 meeting, and a true delight to catch up with @NEID_at_WIYN and @HPFspectrograph friends and colleagues! What an amazing group! @NEID_at_WIYN @mcdonaldobs @WIYNObservatory @NOIRLabAstro @AstroPSU

[NEID @NEID_at_WIYN]

Joint gathering of the NEID and @HPFspectrograph teams at #EPRV5. Exciting to have such a talented and growing team!

[Suvrath Mahadevan @SuvrathM]

Had a great time this week at ETH giving the Zurich Physics Colloquium! Always fun to discuss our planet detection techniques, and the challenges of detecting terrestrial mass exoplanets in Habitable Zones @DidierQueloz @NEID_at_WIYN @HPFspectrograph @ETH_physics

[ETH Physics @ETH_physics]

It is a great pleasure having today Suvrath Mahadevan (@SuvrathM) from @penn_state (left, with host @DidierQueloz, @ETH_physics) in the Zurich Physics Colloquium. #zhphyscoll

https://t.co/u3rQdqTp3A

📷 @HostettlerHeidi / @ETH_physics

[Suvrath Mahadevan @SuvrathM]

Nice graphic! Anyone can apply to use the high RV precision @NEID_at_WIYN for exoplanet science through the @NOIRLabAstro call. Enabling this capability for the community was one of our major motivations for building NEID (and of course we use it too!) @WIYNObservatory @usngo

[US National Gemini Office @usngo]

📢📢 The 23B @NOIRLabAstro Call for Proposals is out! Over 500 nights across 20+ telescopes. Deadline 03/31. https://t.co/BUG651tytC @NOIRLabAstroES @AURADC @AURADC @KittPeakNatObs @cerrotololo @GeminiObs @SubaruTelescope @keckobservatory @WIYNObservatory @LCOAstro @LCO_Global

[Suvrath Mahadevan @SuvrathM]

Neat measurement in this new paper by @AstroPSU senior Robert Frazier using @NEID_at_WIYN to determine the obliquity of the young star TOI-2076, which hosts a system of three transiting planets. @PSU_CEHW @WIYNObservatory @NOIRLabAstro @PSUScience

[NEID @NEID_at_WIYN]

New science on the NEID blog: what is obliquity? How do we measure it? And what is the obliquity of TOI-2076b, a recently-discovered young Neptune-sized exoplanet?

Based on a publication led by Robert Frazier, data from @NOIRLabAstro @WIYNObservatory

https://t.co/fCrp64qUIB

[Carnegie Science @carnegiescience]

A team of astronomers led by @CarnegiePlanets' @shubhamkanodia has discovered an unusual planetary system in which a large gas giant planet orbits a small red dwarf star called TOI-5205. Their findings challenge long-held ideas about planet formation. https://t.co/EEMQ3yO2gh

[WIYN Observatory @WIYNObservatory]

Wrapping up another successful @NEID_at_WIYN observing run!

[Suvrath Mahadevan @SuvrathM]

NEID's first science-observation. Now published by @ArvindFGupta - an intriguing study in stellar p-modes, and their manifestation as noise sources for precision radial velocity. @NEID_at_WIYN

[Arvind Gupta @ArvindFGupta]

Really excited to finally share some cool results I've been working on! In this paper (https://t.co/bVpzlCcnBn), we use @NEID_at_WIYN and @NASA_TESS data to look at how p-mode oscillations manifest as a source of correlated noise for precision RV measurements. Some highlights: